A circular saw blade for metal cutting includes a disk-shaped base metal, a plurality of circumferentially-spaced gullets opening radially outward at an outer periphery of the base metal, a plurality of tip-receiving seats recessed at rear ends of the gullets relative to a rotational direction of the circular saw blade. The circular saw blade also includes cutting tips mounted to the base metal within the tip-receiving seats and protruding radially outward from the base metal. A thickness of each cutting tip is greater than a thickness of the base metal. Each cutting tip has a thin portion on a radially inner side of the cutting tip that is thinner than or equal to a thickness of the base metal. The thin portion is located within a thickness of each of the tip-receiving seats in the thickness direction.
This end mill (1) has a rod-like base material (2) made of a cemented carbide. Two to four flutes (3) have torsion angles (3a) of 0° to 45° with respect to the axial direction of the base material (2), and extend from the surface of the base material (2). A positive blade groove (4) extends linearly between the flutes (3). A positive blade (11), which is a PCD tip (10), is installed in the positive blade groove (4) and protrudes from the positive blade groove (4). The lead angle (11a) of the cutting edge of the positive blade (11) is 15° to 55°. A reverse blade groove (5) is positioned farther from the tip of the base material (2) than the positive blade groove (4), and extends linearly between the flutes (3). A reverse blade (12), which is a PCD tip (10), is installed in the reverse blade groove (5) and protrudes from the reverse blade groove (5). The lead angle of the cutting edge of the reverse blade (12) is -55 to -15°.
B23C 5/10 - Fraise à queue, c.-à-d. comportant une queue incorporée
B23B 27/20 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier à éléments tranchants constitués par des diamants
B23C 5/16 - Outils de fraisage caractérisés par des particularités physiques autres que la forme
B23P 15/34 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe de fraises
A rotary cutting tool, which is excellent in defect resistance and has a stable lifespan, includes a rake surface composed of one surface, a cutting edge angle that is larger than 0° and smaller than 90°, a true rake angle that is not smaller than −42° and not larger than −13°, and a major cutting edge inclination angle that is not smaller than −5° and smaller than +5°. A wiper insert is preferably formed in a rounded convex shape.
A long cutting knife is used to cut wood along an outer surface of the wood to obtain a veneer. The long cutting knife includes a blade metal including a cutting edge at a tip end and a flank face adjacent a rear face. The long cutting knife further includes a base metal to which the rear face of the blade metal is joined. The base metal is a steel material or a quenched steel material. For the steel material of the base metal, the yield point before quenching is greater than or equal to 305 N/mm2, the yield point after quenching is greater than or equal to 390 N/mm2, and/or the carbon content is greater than or equal to 0.32%.
A circular saw blade includes a disc-shaped base metal having an outer diameter of 200 mm to 500 mm, and a plurality of first tips, and a plurality of second tips alternately arranged along an outer circumference of the base metal. The circular saw blade has a blade thickness about 0.8 mm to 2.0 mm. The first tips and the second tips have cutting edges and a pair of chamfers at both ends of the cutting edges. A first groove and a second groove are formed in a flank so as to extend in a circumferential direction of the cutting edges. The first groove includes a first groove bottom that is deepest in a radial direction at a position of a first distance from a thickness center in a first thickness direction. The second groove has a second groove bottom that is deepest in the radial direction at a position of a second distance from the thickness center in a second thickness direction opposite to the first thickness direction. A sum of the first distance and the second distance is about 0.35 mm or less.
The present invention addresses the problem of providing a cutting insert having improved durability. A cutting insert according to the present invention that solves said problem has a main cutting edge 11a and a rake cutting edge 11b, both of which are made of CBN. A rake surface 1121 of the rake cutting edge 11b has formed thereon a chamfered surface 1124 that is formed so as to reach the main cutting edge 11a and have a smooth-treated surface at least in the vicinity of the main cutting edge 11a. The smooth-treated chamfered surface eliminates areas of stress concentration and enables preventing chipping or the like, and thereby improves durability. Also, it is preferable to form the main-cutting-edge side of the chamfered surface in a protruding round shape. Forming the main-cutting-edge side in a protruding round shape makes it possible to exhibit an effect equivalent to providing a chamfered surface without forming a ridge.
The present invention addresses the problem of providing a wood-cutting cutter which is used for the cutting processing of a woody material and that can be easily reground. The wood-cutting cutter has a hardened layer provided on a surface of a cutting blade thereof, the hardened layer comprising a base material that has been modified by nitriding or carburizing. The surface hardness of a blade portion is more than 40 HRC. The wood-cutting cutter is formed of tool steel. The hardened layer formed on the surface by nitriding or carburizing is integrally formed with the base material, and is therefore less likely to experience damages that occur independently due to regrinding, such as delamination, unlike in the case of a coating layer.
B27G 13/08 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires en forme de disqueFraises à bois
B24B 3/46 - Affûtage des arêtes tranchantes, p. ex. des outilsAccessoires à cet effet, p. ex. porte-outils des lames coupantes des lames circulaires
B27G 13/14 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires pour tailler des profils pour tailler des rainures ou des tenons
Metalworking machines and tools; mining machines and
apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; chemical
processing machines and apparatus; textile machines and
apparatus; food or beverage processing machines and
apparatus; lumbering, woodworking, or veneer or plywood
making machines and apparatus; pulp making, papermaking or
paper-working machines and apparatus; printing or
bookbinding machines and apparatus; agricultural machines
and implements; shoe making machines; leather tanning
machines; tobacco processing machines; packaging or wrapping
machines and apparatus; plastic processing machines and
apparatus; rubber-goods manufacturing machines and
apparatus; stone working machines and apparatus; food mixing
machines for commercial use; food peeling machines for
commercial use; dishwashers for industrial purposes; food
cutting, chopping and slicing machines for commercial use;
lawnmowers; waste compacting machines and apparatus for
industrial purposes; waste crushing machines for industrial
purposes.
Metalworking machines and tools; blades for lumbering,
woodworking, or veneer or plywood making machines and
apparatus; blades for plastic processing machines and
apparatus.
metalworking machines and machine tools; blades being machine parts for lumbering, woodworking, or veneer or plywood making machines and apparatus; blades being machine parts for plastic processing machines and apparatus
Metalworking machines and machine tools; chemical processing machines and apparatus, namely, dissolving machines and agitators for chemical processing; textile machines and apparatus, namely, weaving machines, structural parts of textile machines, accessories in the nature of weft-yarn selecting units, and structural replacement parts for textile machines; lumbering, woodworking, veneer and plywood making machines and apparatus, namely, wood lathes, veneer manufacturing machines, wood sawing machines, wood drilling machines, wood planing machines, wood milling machines, wood chipping machines, wood cutting machines, electric hedge trimmers, electric routers being power tools, circular saws, electric miter saws, table saws; pulp making, papermaking and paper-working machines and apparatus being paper-working machines; printing or bookbinding machines and apparatus, namely, bookbinding machines and printing machines for industrial purposes; agricultural machines and implements, namely, motorized cultivators and tilling machines, combine harvesters; tobacco processing machines; packing and wrapping machines and apparatus being packing and wrapping machines; plastic processing machines and apparatus being plastic processing machines; machines and apparatus for manufacturing rubber goods being rubber manufacturing machines; lawnmowers; waste compacting machines and apparatus being waste compacting machines for industrial purposes; waste crushing machines for industrial purposes
A long metal sheet is rolled in a width direction to form a hollow tube while being delivered. A seam appeared in a longitudinal direction of a tubular body is electrically welded to form an electric-resistance-welded tube. The electric-resistance-welded tube is cut in a predetermined size by a circular saw cutting machine which travels in synchronicity with the electric-resistance-welded tube during its production process. A weld bead remains at the seam of the electric-resistance-welded tube so that the weld bead remained in the tube may be involved when the electric-resistance-welded tube is cut by the circular saw blade. Therefore, there is a problem to be solved that a significant load may be generated on a second rake face of the tip when the cutting tip of the circular saw blade bites debris in the tube, which may lead to the chipping or missing of the tips.
A long metal sheet is rolled in a width direction to form a hollow tube while being delivered. A seam appeared in a longitudinal direction of a tubular body is electrically welded to form an electric-resistance-welded tube. The electric-resistance-welded tube is cut in a predetermined size by a circular saw cutting machine which travels in synchronicity with the electric-resistance-welded tube during its production process. A weld bead remains at the seam of the electric-resistance-welded tube so that the weld bead remained in the tube may be involved when the electric-resistance-welded tube is cut by the circular saw blade. Therefore, there is a problem to be solved that a significant load may be generated on a second rake face of the tip when the cutting tip of the circular saw blade bites debris in the tube, which may lead to the chipping or missing of the tips.
Solution to Problem
A long metal sheet is rolled in a width direction to form a hollow tube while being delivered. A seam appeared in a longitudinal direction of a tubular body is electrically welded to form an electric-resistance-welded tube. The electric-resistance-welded tube is cut in a predetermined size by a circular saw cutting machine which travels in synchronicity with the electric-resistance-welded tube during its production process. A weld bead remains at the seam of the electric-resistance-welded tube so that the weld bead remained in the tube may be involved when the electric-resistance-welded tube is cut by the circular saw blade. Therefore, there is a problem to be solved that a significant load may be generated on a second rake face of the tip when the cutting tip of the circular saw blade bites debris in the tube, which may lead to the chipping or missing of the tips.
Solution to Problem
A circular saw blade has a plurality of cutting tips 10 joined at an outer circumference of a base metal. Each of the cutting tips 10 includes a first rake face 14 located at a front of the tip of the circular saw blade in a rotation direction of the circular saw blade, a flank 18 located in an outer circumferential direction of the circular saw blade, and a second rake face 22 adjacent to the first rake face 14 on a side of an axis of the circular saw blade. The center of the second rake face 22 is configured to project in the rotation direction of the circular saw blade.
A circular saw blade (1) for cutting metal comprises: a disc-shaped base metal (2); a gullet (5) opening radially outward on an outer circumference of the base metal (2); and a tip seat (6) recessed at a rear end of the gullet (5) in a rotating direction. The circular saw blade (1) has a tip (10) attached to the tip seat (6) and protruding radially outward more than the base metal (2). A blade thickness of the tip (10) is thicker than a thickness (2c) of the base metal (2). The tip (10) has, on a radially inner side, a thin portion (15) with a thickness less than the thickness (2c) of the base metal (2). The thin portion (15) is positioned within the thickness of the tip seat (6) in the thickness direction.
B23D 61/04 - Lames de scies circulaires à dents de scies rapportées
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
Provided is a disk-shaped rotating tool in which cutting vibration and cutting noise are less likely to occur than conventional technology. This disk-shaped rotating tool has: a base metal 10 in which one or more slits 15 penetrating the front and rear surfaces are formed; and a large number of teeth 20 provided on the outer circumference of the base metal 10 so as to protrude radially outward, wherein the slit 15 is folded back one or more times and defines a finger piece having a thick tip shape, and the length of the finger piece is at least three times the average value of the width of the root and the width of the widest portion. By defining the finger piece by the slit 15 and making the shape of the finger piece a thick tip shape, it is possible to effectively suppress the occurrence of cutting vibration and cutting noise. It is preferable that at least one among the slits 15 be repeatedly folded back four or more times to define four or more finger pieces. In this case, the finger pieces are defined such that the orientations thereof are alternately switched. It is also preferable that the angle formed by both lateral lines of the finger piece is 1° or greater.
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
B26D 1/14 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet comportant un élément qui ne suit pas le mouvement de la pièce ayant un élément coupant se déplaçant autour d'un axe avec un élément circulaire, p. ex. un disque
For this dimple machining method, a rotary cutting tool (1) equipped with one or more cutting edges (5) that protrude in radial directions of a rod-like body (3) is prepared. In a member on which an outer circumference (33) of a plunger tip (30) slides with respect to an inner circumference of an injection sleeve, either the inner circumference of the injection sleeve or the outer circumference (33) of the plunger tip (30) is used as a machining surface. While causing the rotary cutting tool (1) to rotate about the shaft center (3a) of the rod-like body, either the injection sleeve or the plunger tip (30) is relatively fed so as to cause the rotary cutting tool (1) to move along the machining surface. One dimple (34) is formed in the machining surface by a single round of cutting performed by one of the cutting edges (5).
B22D 17/20 - AccessoiresCoulée sous pression ou moulage par injection, c.-à-d. moulage en introduisant le métal dans le moule sous haute pression Parties constitutives
B23D 79/04 - Machines ou dispositifs de raclage à outil de coupe rotatif, p. ex. pour lisser les garnitures de paliers
In the present invention, a replaceable blade (1) is used to cut a material to be cut made of a non-ferrous metal or an alloy thereof, wood, a wood-based material, or a resin. A coating (14) that coats a substrate (10) is provided. The coating (14) has a columnar structure that is provided to a flank face (3) of a cutting edge (5) in which a rake face (4) and the flank face (3) intersect, and that is provided so as to rise upright from the substrate (10). The material constituting the coating (14) includes one or more substances from among chromium nitrides, oxynitrides, oxides, carbides, carbonates, carbonitrides and carbonitrides.
B23B 27/14 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier
B23P 15/28 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
A tipped saw blade includes a disc-shaped base metal and a plurality of tips. Each tip has an edge selected from a flat edge, a left beveled edge, and a right beveled edge. The tips are positioned circumferentially adjacent each other about a radially outer periphery of the base metal. Each flat edge includes a cutting edge that is oriented parallel to a thickness direction of the base metal. Each left beveled edge and each right beveled edge include a corresponding cutting edge that is inclined with respect to the thickness direction of the base metal. Cutting edge line lengths correspond to the lengths at which the cutting edges come in contact with a workpiece when cutting a workpiece. The cutting edges have the following relationship: (sum of cutting edge line lengths of the plurality of beveled edges)≤[((cutting edge line length of one of the flat edges)−(kerf thickness+1.5))×(number of the plurality of flat edges)×1.2].
The present invention addresses the problem of providing a rotary cutting tool having excellent chipping resistance, and a stable lifespan. In a rotary cutting tool of the present invention that solves the above problem, a rake face is composed of one face, a cutting edge angle is greater than 0° and less than 90°, a true rake angle is between -42° and -13° inclusive, and an inclination angle of a major cutting edge is greater than or equal to -5° and less than +5°. In particular, a flat drag 22 preferably has a protruding round shape.
Metalworking machines and tools; mining machines and
apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; chemical
processing machines and apparatus; textile machines and
apparatus; food or beverage processing machines and
apparatus; lumbering, woodworking, or veneer or plywood
making machines and apparatus; pulp making, papermaking or
paper-working machines and apparatus; printing or
bookbinding machines and apparatus; agricultural machines
and implements; shoe making machines; leather tanning
machines; tobacco processing machines; packaging or wrapping
machines and apparatus; plastic processing machines and
apparatus; rubber-goods manufacturing machines and
apparatus; stone working machines and apparatus; food mixing
machines for commercial use; food peeling machines for
commercial use; dishwashers for industrial purposes; food
cutting, chopping and slicing machines for commercial use;
lawnmowers; waste compacting machines and apparatus; waste
crushing machines.
Metalworking machines and tools; mining machines and
apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; chemical
processing machines and apparatus; textile machines and
apparatus; food or beverage processing machines and
apparatus; lumbering, woodworking, or veneer or plywood
making machines and apparatus; pulp making, papermaking or
paper-working machines and apparatus; printing or
bookbinding machines and apparatus; agricultural machines
and implements; shoe making machines; leather tanning
machines; tobacco processing machines; packaging or wrapping
machines and apparatus; plastic processing machines and
apparatus; rubber-goods manufacturing machines and
apparatus; stone working machines and apparatus; food mixing
machines for commercial use; food peeling machines for
commercial use; dishwashers for industrial purposes; food
cutting, chopping and slicing machines for commercial use;
lawnmowers; waste compacting machines and apparatus; waste
crushing machines.
This milling cutter includes: a blade part 10 having a plurality of tips 12 each having an end cutting edge 121 and a peripheral cutting edge 122, and a blade-body portion 11 which is a plate-shaped body with the plurality of tips 12 fixed to an outer circumference thereof and has a groove 113 in accordance with a position of each tip; and a body 20 being rotatable around a rotational axis and having a front-end portion 21 having a front-end surface to which a rear-end surface of the blade-body portion 11 is fixable detachably and in close contact therewith, and a front-end outer-circumferential portion whose outer diameter is 100/100 to 97/100 using an outer diameter of the blade part 10 as a reference, the front-end outer-circumferential portion having a body-side groove 211 continuous to the groove 113 of the blade-body portion 11 contacted closely.
A circular saw blade (1) comprises: a disc-shaped base metal (2) having an outer diameter of 200 to 500 mm; and first tips (11) and second tips (13) that are disposed alternately along the outer periphery of the base metal (2). The circular saw blade (1) has a blade thickness (1a) of 0.8 mm to 2.0 mm. Each of the first tips (11) and the second tips (13) has a cutting edge (11c, 13c) and a pair of chamfers (11f) at both ends of the cutting edge (11c, 13c). A first groove (12) and a second groove (14) are formed in a flank extending in the peripheral direction from the cutting edge (11c, 13c). The first groove (12) has a first groove bottom (12e) that is deepest in the radial direction at a position of a first distance (15a) from a thickness center (7c) in a first thickness direction. The second groove (14) has a second groove bottom (14e) that is deepest in the radial direction at a position of a second distance (15b) from the thickness center (7c) in a second thickness direction opposite the first thickness direction. Th sum of the first distance (15a) and the second distance (15b) is no more than 0.35 mm.
Metalworking machines and machine tools; chemical processing machines and apparatus, namely, dissolving machines and agitators for chemical processing; textile machines and apparatus, namely, weaving machines, structural parts of textile machines, accessories in the nature of weft-yarn selecting units, and structural replacement parts for textile machines; lumbering, woodworking, veneer and plywood making machines and apparatus, namely, wood lathes, veneer manufacturing machines, wood sawing machines, wood drilling machines, wood planing machines, wood milling machines, wood chipping machines, wood cutting machines, electric hedge trimmers, electric routers being power tools, circular saws, electric miter saws, table saws; pulp making, papermaking and paper-working machines and apparatus being paper-working machines; printing or bookbinding machines and apparatus, namely, bookbinding machines and printing machines for industrial purposes; agricultural machines and implements, namely, motorized cultivators and tilling machines, combine harvesters; tobacco processing machines; packing and wrapping machines and apparatus being packing and wrapping machines; plastic processing machines and apparatus being plastic processing machines; machines and apparatus for manufacturing rubber goods being rubber manufacturing machines; lawnmowers; waste compacting machines and apparatus being waste compacting machines for industrial purposes; waste crushing machines for industrial purposes
Metalworking machines and machine tools; chemical processing machines and apparatus, namely, dissolving machines and agitators for chemical processing; textile machines and apparatus, namely, weaving machines, structural parts of textile machines, accessories in the nature of weft-yarn selecting units, and structural replacement parts for textile machines; lumbering, woodworking, veneer and plywood making machines and apparatus, namely, wood lathes, veneer manufacturing machines, wood sawing machines, wood drilling machines, wood planing machines, wood milling machines, wood chipping machines, wood cutting machines, electric hedge trimmers, electric routers being power tools, circular saws, electric miter saws, table saws; pulp making, papermaking and paper-working machines and apparatus being paper-working machines; printing or bookbinding machines and apparatus, namely, bookbinding machines and printing machines for industrial purposes; agricultural machines and implements, namely, motorized cultivators and tilling machines, combine harvesters; tobacco processing machines; packing and wrapping machines and apparatus being packing and wrapping machines; plastic processing machines and apparatus being plastic processing machines; machines and apparatus for manufacturing rubber goods being rubber manufacturing machines; lawnmowers; waste compacting machines and apparatus being waste compacting machines for industrial purposes; waste crushing machines for industrial purposes
In a dimple processing method for forming dimples on a curved surface of a workpiece, a cutting tool having a cutting edge on a rod-shaped body is rotated about a central axis of the cutting tool. The workpiece is rotated about a first axis. The cutting tool or the workpiece moves on a virtual plane through which the first axis passes or on a plane parallel to the virtual plane. The cutting tool or the workpiece moves such that the tip end of the cutting tool follows the curved surface of the workpiece. The cutting edge forms one or more dimple on the curved surface each time the cutting tool rotates.
The present invention addresses the problem to be solved of providing a rotary cutting tool that has a cutting blade having a twist angle, and that can be more easily manufactured than conventional cutting tools. The present invention comprises: a chip 20 in which a cutting blade E, that is a ridge line of at least a rake face and a flank face, is formed from a hard sintered body containing diamond and/or cubic boron nitride; and a body 10 in which the chip 20 is joined to a seat back surface 111. The seat back surface 111 is inclined with respect to the axial center Ax in the plane, has the rake face and the flank face formed therein as curved surfaces, and has a prescribed flank angle, a prescribed rake angle, and a prescribed twist angle. In particular, when the plane vertical to the seat back surface 111 and including the axial center Ax is viewed in the vertical direction, it is preferable for one end of the seat back surface 111 joined with the chip 20 to be positioned further to the front in the rotation direction of the rotary cutting tool than the axial center Ax, and the rear end of the seat back surface 111 is positioned further to the rear in the rotation direction of the rotary cutting tool than the axial center Ax. Conventional rotary cutting tools have both ends of the seat back surface positioned further to the rear in the rotation direction than the axial center Ax.
B23C 5/10 - Fraise à queue, c.-à-d. comportant une queue incorporée
B22F 7/00 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage
B22F 7/08 - Fabrication de couches composites, de pièces ou d'objets à base de poudres métalliques, par frittage avec ou sans compactage de pièces ou objets composés de parties différentes, p. ex. pour former des outils à embouts rapportés avec une ou plusieurs parties non faites à partir de poudre
B23B 27/14 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier
B23B 27/20 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier à éléments tranchants constitués par des diamants
B23C 5/18 - Outils de fraisage caractérisés par des particularités physiques autres que la forme à taillants ou dents fixés d'une façon permanente
A long cutting tool (1) is used to cut off wood (W) along an outer surface (W1) of the wood (W) to obtain veneer. The long cutting tool (1) has a blade (3) including a cutting blade (3a) at a tip thereof and a flank (3c) at a rear surface (3d) thereof. In addition, the long cutting tool (1) has a base metal (2) to which the rear surface (3d) of the blade (3) is bonded. The long cutting tool (1) is a steel material in which the base metal (2) is quenched, and the steel material before quenching has a yield point of 305 N/mm2 or more.
According to the present invention, a right chip (14), a left chip (13), and a middle chip (12) of a chip saw (1) comprise radial outer tips (14a, 13a, 12a) on a right side or a left side in a thickness direction or near a center of a base metal (2). A first right cutting edge (14i) of the right chip (14) extends from the tip (14a) to a right end (14c) at a first right angle (14m). A left cutting edge (14f) extends from the tip (14a) to a let side surface (14df) at a first left angle (14j). A first left shoulder cutting edge (14h) extends from the first left cutting edge (14f) to a left end (14b) at a first left shoulder angle (14k). A second left cutting edge (13f) of the left chip (13) extends from the tip (13a) to a left end (13b) at a second left angle (13j). A second right cutting edge (13g) extends from the tip (13a) to a right side surface (13ef) at a second right angle (13k). A second right shoulder cutting edge (13i) extends from the second right cutting edge (13g) to a right end (13c) at a second right shoulder angle (13m).
A tip saw (1) is used in cutting. The tip saw (1) has a disc-shaped base metal (2) and a plurality of cutting tips (10) that are bonded to the outer circumference of the base metal (2). The pitches (11) of the plurality of cutting tips (10) comprise a plurality of different pitches. The value of the largest pitch (11b) is greater than or equal to three times the value of the smallest pitch (11a).
B28D 1/04 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par sciage avec des lames de scie circulaires ou des disques de scie
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
An electric-resistance welded pipe, in which a long metal sheet is made round in the width direction while being extended to form a hollow pipe and in which a seam produced along the longitudinal direction of the pipe body is electrically welded, is cut to prescribed dimensions by a circular saw cutter that travels synchronously during steps for manufacturing the electric-resistance welded pipe. A welding bead part remains at the seam of the electric-resistance welded pipe, and the welding bead part remaining inside the pipe ends up being entrained when the electric-resistance welded pipe is cut by a circular saw blade. The present invention therefore addresses the problem that a large load is applied to a second relief surface of a cutting tip of a circular saw blade and tip breakage/loss occurs when the cutting tip bites into the fragments inside the pipe. A circular saw blade in which numerous cutting tips 10 are joined along the outer circumference of a base metal, wherein: the circular saw blade is formed from a first relief surface 14 positioned forward in the rotation direction of the circular saw blade, a flank surface 18 positioned in the outer-circumferential direction of the circular saw blade, and a second relief surface 22 that is adjacent to the circular-saw-blade axial-center side of the first relief surface 14; and the second relief surface 22 is configured so that the center thereof protrudes in the rotation direction of the circular saw blade.
A segmented cutting type tipped saw blade includes a first ridge tip, a second ridge tip, a first end tip, and a second end tip. A first end of the first end tip, a second end of the second end tip, a tip end of the first ridge tip, and a tip end of the second ridge tip project radially outward. A top bevel surface extending from the first end and a top bevel surface extending from the second end, a first bevel surface and a second bevel surface extending from the tip end of the first ridge tip and a first bevel surface and a second bevel surface extending from the tip end of the second ridge tip each have a top bevel angle of greater than or equal to 3° and less than or equal to 10°.
This tip saw has a circular disc-shaped base metal, and a plurality of first through ninth tips (11)-(19) that are bonded to the outer circumference of the base metal and are configured from a plurality of flat edges, a plurality of left-tilted edges, and a plurality of right-tilted edges. The flat edges comprise cutting edges (21c) that are horizontal with regard to the thickness direction of the base metal. The left-tilted edges and the right-tilted edges comprise cutting edges (22c, 23c) that are tilted with regard to the thickness direction of the base metal. When cutting a work material (40), the lengths where the cutting edges (21c)-(23c) contact the work material (40) are cutting edge line lengths (31a)-(39a). Presuming that the feed rate per edge is 0 mm/edge, that the flat edges cut the work material (40) first, and that the tilted edges cut the work material (40) immediately after the flat edges do, the following relationship is satisfied: sum of the cutting edge line lengths (32a)-(39a) of the plurality of tilted edges ≤ (cutting edge line length 31a per flat edge – edge width T + 1.5) × number of flat edges (21) × 1.2.
The problem to be solved by the present invention is to provide a milling cutter having a tip that can be replaced with ease at low cost. The present invention has: a blade part 10 that has a plurality of tips 12 each provided with a bottom blade 121 and an outer peripheral blade 122, and a blade body part 11 which is a plate-like body to which the plurality of tips 12 are fixed at an outer periphery and has grooves 113 matched to the positions of the tips 12; and a body 20 having a front end part 21, which has a front end surface to which the rear end surface of the blade body part 11 is fixed in a contactable and detachable manner, and a front end outer peripheral section which has an outer diameter of 100/100-97/100 with respect to the outer diameter of the blade part 10 and in which body-side grooves 211 continuous to the grooves 113 of the blade body part 11 in close contact are formed, the body 20 being rotatable about a rotation axis.
In a dimple machining method for forming dimples in a curved surface (41) of an object (40) to be machined, a cutting tool 1 having a cutting edge (5a) on a rod-like body (2) is rotated about an axis (2a). The object (40) to be machined is rotated about a first axis (20a). The cutting tool (1) or the object (40) to be machined is moved over a virtual plane through which the first axis (20a) passes and that is perpendicular to the Y axis or over a plane parallel to the virtual plane such that a distal end (3) of the cutting tool (1) moves over the curved surface (41) of the object (40) to be machined. The cutting edge (5a) forms a dimple in the curved surface (41) each time the cutting tool 1 is rotated.
In a dimple machining method for forming dimples in a curved surface (41) of an object (40) to be machined, a cutting tool 1 having a cutting edge (5a) on a rod-like body (2) is rotated about an axis (2a). The object (40) to be machined is rotated about a first axis (20a). The cutting tool (1) or the object (40) to be machined is moved over a virtual plane through which the first axis (20a) passes and that is perpendicular to the Y axis or over a plane parallel to the virtual plane such that a distal end (3) of the cutting tool (1) moves over the curved surface (41) of the object (40) to be machined. The cutting edge (5a) forms a dimple in the curved surface (41) each time the cutting tool 1 is rotated.
FOREST RESEARCH AND MANAGEMENT ORGANIZATION (Japon)
Inventeur(s)
Tsuchiya, Atsushi
Hiramatsu, Yasushi
Fujimoto, Kiyohiko
Abrégé
The present invention addresses the problem of providing a finger joint which exhibits high strength even when the finger length is made short. This finger joint has a finger length L of 12.0 mm or less, a scarf inclination ratio tanθ of 1/8.8 or less, and an adhesive area s per unit cross-sectional area (1 mm2) in a butting direction of 4.67 mm2 or more. This wood product is formed by vertical joining using this finger joint. The wood product is any one of a structural laminated wood laminar, a cross laminated timber (CLT) laminar, and a vertical joining material for a framework wall construction method structure. These are all supposed to be used for parts on which large external force will be applied, and thus are required to be of high strength.
B27D 1/10 - Aboutage des morceaux de placageJointage de ces morceaux sur chantsTraitement préparatoire des chants, p. ex. coupage
B27F 1/16 - Fabrication d'assemblages à doigts, c.-à-d. en forme de coins s'engageant les uns dans les autres face à face à l'inverse des queues d'aronde
42.
Dimple processing method using rotary cutting tool, and rotary cutting tool for dimple processing
An end mill having a plurality of cutting edges on a surface of a rod-shaped main body is rotated about its longitudinal axis and is moved relative to a workpiece in a feed direction tangential and orthogonal to the longitudinal axis along the workpiece. The end mill is also moved relative to the workpiece in a reciprocal manner in the axial direction while it is moved in the feed direction. In this way, a plurality of dimples are formed by the end mill on the workpiece, such that the dimples are relatively spaced apart from each other on the workpiece. The plurality of dimples are arranged side by side in the feed direction along a line inclined at a predetermined angle relative to the feed direction so as to be offset while partially overlapping with respect to each other in the axial direction.
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Metalworking machines and tools; mining machines and apparatus; construction machines and apparatus; loading-unloading machines and apparatus; chemical processing machines and apparatus; textile machines and apparatus; food or beverage processing machines and apparatus; lumbering, woodworking, or veneer or plywood making machines and apparatus; pulp making, papermaking or paper-working machines and apparatus; printing or bookbinding machines and apparatus; agricultural machines and implements; shoe making machines; leather tanning machines; tobacco processing machines; packing or wrapping machines and apparatus; plastic processing machines and apparatus; rubber-goods manufacturing machines and apparatus; stone working machines and apparatus; food mixing machines for commercial use; food peeling machines for commercial use; dish washing machines for industrial purposes; food cutting, chopping and slicing machines for commercial use; dish washing machines for household purposes; lawnmowers; waste compacting machines and apparatus; waste crushing machines. Repair or maintenance of loading- unloading machines and apparatus; repair or maintenance of construction machines and apparatus; repair or maintenance of printing or bookbinding machines and apparatus; repair or maintenance of chemical processing machines and apparatus; repair or maintenance of metalworking machines and tools; repair or maintenance of shoe making machines and instruments; repair or maintenance of leather tanning machines; repair or maintenance of mining machines and apparatus; repair or maintenance of machines and apparatus for processing foods or beverages; repair or maintenance of machines and apparatus for lumbering, woodworking, or veneer or plywood making; repair or maintenance of textile machines and apparatus; repair or maintenance of tobacco processing machines; repair or maintenance of agricultural machines and implements; repair or maintenance of machines and apparatus for pulp making, papermaking or paper- working; repair or maintenance of plastic processing machines and apparatus; repair or maintenance of rubber- goods manufacturing machines and apparatus; repair or maintenance of packing or wrapping machines and apparatus; repair or maintenance of stone working machines and apparatus; repair or maintenance of food mixing machines for commercial use; repair or maintenance of food peeling machines for commercial use; repair or maintenance of dish washing machines for industrial purpose; repair or maintenance of food cutting, chopping and slicing machines for commercial use; repair or maintenance of dish washing machines for household purposes; repair or maintenance of lawnmowers; repair or maintenance of waste compacting machines and apparatus; repair or maintenance of waste crushing machines and apparatus; repair or maintenance of scissors and the like; repair or maintenance of kitchen knives and the like; repair or maintenance of razors; repair or maintenance of hand- operated hair clippers; repair or maintenance of chisels and the like; repair or maintenance of broadaxes, sickles and the like; repair or maintenance of cutting tools (hand tools, hand-held ones only); repair or maintenance of bush hammers (stone hammers); repair or maintenance of mallets; repair or maintenance of hammers (hand- operated); repair or maintenance of screwdrivers and the like; repair or maintenance of troweling and the like; repair or maintenance of vices; repair or maintenance of pincers and the like; repair or maintenance of picks and the like; repair or maintenance of shovels and the like; repair or maintenance of razor strops (leather strops); repair or maintenance of sharpening steels; repair or maintenance of whetstones (sharpening stones).
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Metalworking machines and tools; mining machines and apparatus; construction machines and apparatus; loading-unloading machines and apparatus; chemical processing machines and apparatus; textile machines and apparatus; food or beverage processing machines and apparatus; lumbering, woodworking, or veneer or plywood making machines and apparatus; pulp making, papermaking or paper-working machines and apparatus; printing or bookbinding machines and apparatus; agricultural machines and implements; shoe making machines; leather tanning machines; tobacco processing machines; packing or wrapping machines and apparatus; plastic processing machines and apparatus; rubber-goods manufacturing machines and apparatus; stone working machines and apparatus; food mixing machines for commercial use; food peeling machines for commercial use; dish washing machines for industrial purposes; food cutting, chopping and slicing machines for commercial use; dish washing machines for household purposes; lawnmowers; waste compacting machines and apparatus; waste crushing machines. Repair or maintenance of loading- unloading machines and apparatus; repair or maintenance of construction machines and apparatus; repair or maintenance of printing or bookbinding machines and apparatus; repair or maintenance of chemical processing machines and apparatus; repair or maintenance of metalworking machines and tools; repair or maintenance of shoe making machines and instruments; repair or maintenance of leather tanning machines; repair or maintenance of mining machines and apparatus; repair or maintenance of machines and apparatus for processing foods or beverages; repair or maintenance of machines and apparatus for lumbering, woodworking, or veneer or plywood making; repair or maintenance of textile machines and apparatus; repair or maintenance of tobacco processing machines; repair or maintenance of agricultural machines and implements; repair or maintenance of machines and apparatus for pulp making, papermaking or paper- working; repair or maintenance of plastic processing machines and apparatus; repair or maintenance of rubber- goods manufacturing machines and apparatus; repair or maintenance of packing or wrapping machines and apparatus; repair or maintenance of stone working machines and apparatus; repair or maintenance of food mixing machines for commercial use; repair or maintenance of food peeling machines for commercial use; repair or maintenance of dish washing machines for industrial purpose; repair or maintenance of food cutting, chopping and slicing machines for commercial use; repair or maintenance of dish washing machines for household purposes; repair or maintenance of lawnmowers; repair or maintenance of waste compacting machines and apparatus; repair or maintenance of waste crushing machines and apparatus; repair or maintenance of scissors and the like; repair or maintenance of kitchen knives and the like; repair or maintenance of razors; repair or maintenance of hand- operated hair clippers; repair or maintenance of chisels and the like; repair or maintenance of broadaxes, sickles and the like; repair or maintenance of cutting tools (hand tools, hand-held ones only); repair or maintenance of bush hammers (stone hammers); repair or maintenance of mallets; repair or maintenance of hammers (hand- operated); repair or maintenance of screwdrivers and the like; repair or maintenance of troweling and the like; repair or maintenance of vices; repair or maintenance of pincers and the like; repair or maintenance of picks and the like; repair or maintenance of shovels and the like; repair or maintenance of razor strops (leather strops); repair or maintenance of sharpening steels; repair or maintenance of whetstones (sharpening stones).
The present invention addresses the problem of providing a rotating tool comprising a high-performance breaker. This rotating tool is provided with a rotating tool body 10 and with an edge section 20 having a cutting edge which is formed of a polycrystalline diamond (PCD) or a cubic boron nitride sintered body (CBN) and which is provided to the rotating tool body 10. The rake face of the edge section 20 is provided with a breaker located near the cutting edge. The rotating tool has a configuration (i) and/or a configuration (ii) described below: (i) a cross-section of the breaker taken in the direction perpendicular to the cutting edge has a concave shape, and (ii) the cutting edge is tilted relative to the rotation axis of the rotating tool body 10, and the breaker has a recess which continuously becomes shallower toward an end, defined with respect to the outer peripheral direction of the rotating tool body 10 and/or the axial direction, of both ends of the breaker in the direction parallel to the cutting edge.
B23B 27/20 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier à éléments tranchants constitués par des diamants
B23B 27/14 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier
A tipped circular saw blade includes a disk-shaped metal base having a central axis of rotation, and a plurality of circumferentially-spaced tips extending radially outward from an outer periphery of the metal base. Each tip includes a flank along the radially outer portion thereof, a side face located along a side of the flank, and a chamfer extending between the flank and the side face. The chamfer is oriented at a chamfered angle with respect of the flank. Further, each tip includes a cutting edge located on an end of the flank in the circumferential direction. The cutting edge is configured to cut the workpiece. In addition, each tip includes a groove formed on the flank and extending circumferentially from the cutting edge. The width of the groove may be 0.20 mm to 0.30 mm.
With regard to multiple cutting tips bonded on the periphery of a circular saw base metal, it is possible to reduce noise when cutting a workpiece by varying the pitch between adjacent tips. However, there was the problem that depending on the pitch of the cutting tips, said tips could not be polished with an automated polishing machine. [Solution] Provided is a circular saw (10) obtained by bonding the required number of cutting tips (14) on the periphery of a base metal (12), said circular saw being configured so that: a large number of cutting tips (14) are provided as at least two tip groups (A, B, …) arrayed on the periphery of the circular saw (10); the pitch of each tip group (A, B, …) is set to be the same except for the pitch between the last tip (Am, Bn, …) and the first tip (A1, B1, …); and the pitch of at least one of the at-least-two tip groups (A, B, …) is made to differ from the pitch of the other tip group(s) (A, B, …).
A plurality of dimples (3) are formed in a processing surface (2) of a workpiece 1. For the dimples (3) the aspect ratio of the vertical length (3b) in the longitudinal direction and the lateral length (3c) in the lateral direction orthogonal to the longitudinal direction is 5.0 to 50.0.
This divided cutting type chip saw includes a first ridge chip (11), a second ridge chip (12), a first end chip (13), and a second end chip (14). A first end (13f) of the first end chip (13), a second end (14g) of the second end chip (14), a tip end (11e) of the first ridge chip (11), and a tip end (12e) of the second ridge chip (12) are tip ends which project radially outward. A tip end inclined surface (13c) extending from the first end (13f), a tip end inclined surface (14c) extending from the second end (14g), a first inclined surface (11c) and a second inclined surface (11d) extending from the tip end (11e), and a first inclined surface (12c) and a second inclined surface (12d) extending from the tip end (12e) each have a tip end inclination angle at least equal to 3° and at most equal to 10°.
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
B23D 61/04 - Lames de scies circulaires à dents de scies rapportées
[Problem] With blades for cutting or machining aluminum-based workpieces having aluminum or an aluminum alloy as a starting material, since the melting point of aluminum-based workpieces is lower than that of other iron-based workpieces, in some cases high temperature frictional heat generated during processing causes aluminum shavings to melt and become fused to a base portion of the blade. If aluminum fusion marks are left on the blade, in some cases a smooth cut surface of the aluminum-based workpiece is not achieved, necessitating post-processing such as correction by machining, for example, and the blade may break, developing into a situation in which the operation of the machining device is stopped. [Solution] Aluminum shavings generated during machining are prevented from fusing to the blade by forming layers of a phosphate film 16 and a fatty acid salt film 18 on a base portion 12 of a blade specialized for machining an aluminum-based workpiece.
The present invention addresses the problem of providing a cutting tool material manufacturing method that is capable of manufacturing a cutting tool achieving both corrosion resistance and high hardness. This problem was found to be solved by forming a cutting edge through a combination of laser build-up welding with use of martensitic stainless steel. Specifically, using the laser build-up welding with metal particles being used as raw material was found to facilitate preparation of an alloy component/alloy tissue which satisfies wear resistance and toughness required of the cutting edge while maintaining corrosion resistance equivalent to stainless steel. In other words, the method for manufacturing a cutting tool material according to the present invention which solves the above problem has a cutting edge forming step for forming a cutting edge made of the martensitic stainless steel by carrying out, at least one time, a laser build-up welding step in which an iron metal particle material made of martensitic stainless steel is supplied to the surface of a body material and the body material and a built-up layer made of the iron metal particle material are integrated by means of a laser beam.
B23P 15/28 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe
A cutting or grinding tool includes a blade. The blade includes a disc-shaped base metal, cutting or grinding tips (edges) provided on a peak (outer circumferential edge) of the base metal, and a protruding coating on a side face of the base metal along the entire outer circumference of the base metal.
A circular saw blade to cut electric resistance welded pipes in the electric resistance welded pipe production line experiences an excessive load on hard tips thereof because of the limited cutting time, which results in reduced durability and chipping.
[Solution] A flank 18 is provided with a first flank 20 located at the center thereof, and second and third flanks 22, 24 located inclined toward the respective sides of the first flank 20. Therefore, the lateral sides of the flank 18 have a constant clearance angle rearward from a cutting edge 34, which provides advantages of increased strength and resistance to chipping. Furthermore, a fourth flank 26 having a larger clearance angle is separately provided at the rear of the first flank 20 located at the center. Even if the first flank 20 wears, it is possible to reduce the wear on the fourth flank 26 and improve the durability.
An end mill includes a major-diameter shank, a cone-shaped connector portion disposed at the end of the shank, a minor-diameter body disposed by way of the connector portion coaxially therewith, a toothed element disposed at the leading end of the body, an installation recess dented slightly in the toothed element, and a cutting edge held in the installation recess so as to swell in the shape of an arc to protrude from an outer peripheral face of the body.
The tipped circular saw blade (1) has a disk-shaped base metal (2) and tips (4) joined to the base metal (2) so as to radially project from the outer periphery of the base metal (2). The circular saw blade (1) has an outer diameter of 280mm-500mm, and the tips (4) have a blade thickness of 0.8mm-1.1mm. Each tip (4) has a flank face (4a) facing radially outward, a side face (4b) positioned on one of thickness-direction ends of the flank face (4a), and a chamfer (4c) formed between the flank face (4a) and the side face (4b) and having a chamfer angle (θ) with respect to the flank face (4a). In addition, each tip (4) has a cutting edge (4d) positioned on one circumferential end of the flank face (4a) and used for cutting a workpiece and a groove (4f) formed on the flank face (4a) so as to circumferentially extend from the cutting edge (4d). The groove (4f) has a width of 0.20mm-0.30mm.
Provided is a dimple forming method which uses a rotary cutting tool (1) to form dimples (22) in a material (20) to be worked. The rotary cutting tool (1) is prepared, the rotary cutting tool (1) being provided with a cutting blade (3) which is provided at the front end of a rod-shaped body (2) and which axially protrudes from a position offset from an axis (5). The rotary cutting tool (1) is set so that the axis (5) of the rotary cutting tool (1) will be tilted relative to a line perpendicular to a surface (21) to be worked, of the material (20) to be worked. While the rotary cutting tool (1) is rotated about the axis (5), the rotary cutting tool (1) and the material (20) to be worked are fed relative to each other so that the rotary cutting tool (1) will move along the surface (21) to be worked. The surface (21) to be worked is cut by the cutting blade (3) to form the dimples (22) in the surface (21) to be worked, the dimples (22) being located at a distance from each other.
An end mill (1) provided with multiple cutting edges (5) on the surface of a rod-shaped body (4) is rotated with the shaft center (6) as the center while moving the end mill (1) relative to a workpiece (20) in a feed direction orthogonal to the shaft center (6) and along the workpiece. During the relative movement in the feed direction, the end mill (1) is also moved relative to the workpiece (20) in the axial direction. As a result, multiple dimples (22) that are separated from each other are formed on the workpiece (20). Multiple dimples (22) that are adjacent in the feed direction are formed at positions that are shifted from each other in the axial direction while having portions that overlap in the axial direction.
A blade comprising: a disc-shaped base metal (12); tips (14) (edges) for cutting or grinding that are provided to a peak section (outer circumferential edge) of the base metal (12); and a protruding coating (30) on a side surface (13) of the base metal (12), along the entire outer circumference of the base metal (12).
The invention suppresses chipping of a cutting edge of a cutting tool while maintaining sharpness of the cutting edge.
[Solution] A coating (20) of a replaceable knife (10) of the cutting tool is formed so that either one of a rake-face coating portion (22) that coats a rake face (14) or a clearance-face coating portion (24) that coats a clearance face (16) becomes thicker than the other. The film thickness of the thicker coating portion (22, 24) is set in a range of 0.5 μm to 15.0 μm, and a ratio of the film thickness of the thinner coating portion (24, 22) to the film thickness of the thicker coating portion (22, 24) is set in a range of 0.01 to 0.15.
[Problem] Circular saw blades which cut a seam-welded pipe while traveling in synchronization with the traveling speed of the seam-welded pipe and which go around the seam-welded pipe in a seam-welded pipe production line, have an excessive load put on hard tips thereof because of the limited cutting time, resulting in reduced durability and the possibility of chipping. [Solution] A flank 18 is provided with: a first flank 20 located at the center thereof; and second and third flanks 22, 24 located inclined toward each side of the first flank 20. Thus, the vicinity of the lateral sides of the flank 18 has a constant relief angle toward the rear from a cutting edge ridge 34, thereby providing the advantages of an increase in strength and resistance to chipping. Furthermore, a fourth flank 26 having a larger relief angle is separately provided at the rear of the first flank 20 located at the center. Thus, even if the wear on the first flank 20 occurs early, it is possible to reduce the wear on the fourth flank 26 and improve the durability.
In an end mill 10, a small diameter body 13 is provided coaxially on an end of a large diameter shank 11 via a conical connecting section 12, and a single slightly recessed mounting recess 14 is provided on a tooth body 15 on the distal end of the body 13. In the mounting recess 14, a cutting edge 16 is disposed so as to bulge in an arc shape and protrude from the outer circumferential surface of the body 13. It is possible to form dimples that are separated from each other one by one each time the body 13 is rotated once.
This circular saw 10 has: cutting teeth 14 joined to a plurality of blade bodies 13 that protrude toward the outside in the radial direction at a plurality of locations on the outer circumference of a disc-shaped base metal 11; and gullets 15 which are recessed in the radial direction and formed between each of the plurality of blade bodies 13, wherein the chip clearance angle of the side surface cutting blade of the cutting teeth 14 is within a range of less than ±1°. The circular saw 10 is provided with a vibration prevention mechanism for preventing vibration of the base metal 11. The ratio of the difference between the maximum and minimum pitches of the plurality of cutting teeth 14 to the average pitch value is 40% to 100%. The ratio of the difference between the maximum and minimum values of the average depth of the neighboring gullets to the average depth of the gullets may be adjusted to 20% to 100%.
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
A processing method for a surface of a workpiece using a rotating cutting tool, includes a processing method for forming a cut pattern by rotationally cutting a surface of a workpiece using a rotating cutting tool having cutting edges extending in a rotation axis direction at a plurality of circumferentially separated positions on an outer circumference of a body thereof. Each of the cutting edges includes a plurality of segmental edges segmented at an equal pitch in the rotation axis direction. A ratio of depth d to width W (d/W) of a knife mark formed on the surface of the workpiece by the segmental edges is not less than 3/100.
B44B 3/02 - Machines ou appareils d'artistes équipés d'outils ou de supports de l'ouvrage, susceptibles d'être déplacés grosso modo selon deux dimensions, pour ciseler, graver ou guillocher des motifs ou des marques peu profondes pour le travail des surfaces planes
A wood or resin cutting tool with improved durability is provided. The wood or resin cutting tool is composed of a base material made of steel or a cemented carbide alloy, and a coating formed on at least one of the rake face and the clearance face of the cutting tool. The coating includes a periodic structure layer made of chromium oxynitride, in which high oxygen regions having a high concentration of oxygen in the texture and low oxygen regions having a lower concentration of oxygen in the texture than the high oxygen regions periodically exist in the thickness direction of the coating. The periodic structure layer is formed such that the nitrogen concentration periodically turns high and low in the thickness direction of the layer corresponding to the high oxygen regions and the low oxygen regions.
B27G 13/00 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires
B27B 33/00 - Outils de sciage pour scieries, machines à scier, ou dispositifs de sciage
B23D 61/00 - Outils de machines à scier ou de dispositifs de sciageDispositifs de serrage pour ces outils
B23D 65/00 - Fabrication d'outils de machines à scier ou de dispositifs de sciage pour la coupe de n'importe quelle sorte de matériau
C23C 14/06 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le matériau de revêtement
C23C 28/04 - Revêtements uniquement de matériaux inorganiques non métalliques
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
The present invention suppresses chipping of a cutting edge of a cutting tool while maintaining sharpness of the cutting edge. [Solution] The coating (20) on a replacement blade (10) for a cutting tool is formed so that one of a rake-face-coating section (22) that covers a rake face (14) and flank-face-coating section (24) that covers a flank face (16) is thicker than the other. The coating thickness of the thicker coating section (22, 24) is set to fall within a range of 0.5µm-15.0µm, and the ratio of the coating thickness of the thinner coating section (24, 22) to the coating thickness of the thicker coating section (22, 24) is set to fall within a range of 0.01-0.15.
Provided is a cutter equipped with cutting blades having excellent durability. The cutter (10) has a plurality of cutting blades (22) provided with gaps therebetween in the circumferential direction on the outer circumference of a metal base (12), the cutter being configured so as to cut a V-shaped groove in a work piece using the cutting blades (22), both side surfaces (24, 24) of which being set at a negative set angle (δ). The rake angle (α) of the cutting blades (22) at the position where the outer diameter of the cutter is greatest is set to 0° or a negative angle. Also, the lead angle of the cutting blades (22) is set so that one side edge of the rake face (28) is the dominant blade (32).
Lumbering machines and apparatus; woodworking machines and
apparatus; veneer and plywood machines and apparatus; resin
processing machines and apparatus; planer heads for
lumbering, woodworking, veneer or plywood; cutter heads for
resin processing; milling cutters for woodworking; blades
for milling cutter for woodworking; wood planing machines;
wood milling machines.
69.
BLADE FOR CUTTING WOOD AND CUTTING TOOL USING SAME
The planer blade (21), which is mounted on the body (11) of a cutter head (10) for cutting wood, is provided with multiple grooves (26) that extend from the tool edge (24) to the cutting face (22). For the grooves (26), the width (w) is 15-75 µm, the depth (d) is 2-14 µm, the pitch (p) is 40-800 µm, and the ratio (p/w) of pitch (p) to width (w) is 2-16. The roughness of the grooves (26) is rougher than the roughness of the cutting face (22).
B27G 13/08 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires en forme de disqueFraises à bois
On the end of a large diameter shank (11), the end mill (10) is provided with a coaxial small diameter body (13) via a connecting section (12) and is provided with a pair of cutting edges (14, 15) that extend in the direction of the rotational axis at two sites that are separated at equal intervals in the circumferential direction of the circumference of the body (13). In the cutting edges (14, 15), multiple segmental edges (14a, 15a) are formed successively with the same pitch (P) (same length) in the direction of the rotational axis. The tool edges of the segmental edges (14a, 15a) have an arc shape that swells out in the radial direction with a tool edge arc diameter (R). The segmental edges (14a) are shifted by a half pitch with respect to the segmental edges (15a) in the direction of the rotational axis.
B44B 3/02 - Machines ou appareils d'artistes équipés d'outils ou de supports de l'ouvrage, susceptibles d'être déplacés grosso modo selon deux dimensions, pour ciseler, graver ou guillocher des motifs ou des marques peu profondes pour le travail des surfaces planes
B23C 3/00 - Fraisage de pièces particulièresOpérations de fraisage spécialesMachines à cet effet
The spare blade (25) is a square plate that forms a plane, is installed on the circumferential surface of a cutter (10), and is made of a superhard alloy. The plane (28) that forms the tool edge is a slightly swelled convex curved surface (28a) that has the shape of the side surface of a single cone. The center of the square plate is on the central axes of the convex curved surfaces (28a). The entire surface of the spare blade (25) has a diamond coating of 5-25 µm film thickness.
B23C 5/20 - Outils de fraisage caractérisés par des particularités physiques autres que la forme à taillants ou dents amovibles
B23C 5/04 - Fraises à rouler, c.-à-d. fraises ayant une surface de coupe essentiellement cylindrique ou conique, de longueur appréciable
B23C 5/16 - Outils de fraisage caractérisés par des particularités physiques autres que la forme
B27G 13/08 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires en forme de disqueFraises à bois
72.
METHOD FOR MANUFACTURING CIRCULAR SAW WITH HARD TIP
A method for manufacturing a circular saw (10), provided with: a first step for manufacturing a discoid base metal (11); a second step for polishing the cutting edge and manufacturing a cutting edge tip (21); a third step for covering the cutting edge tip (21) with a hard coating (24); and a fourth step for fixing, by brazing, the cutting edge tip (21) coated by the hard coating (24) onto a base (13) of the base metal (11). The material constituting the hard coating is any one of: a first material which is a nitride, an oxide, or an oxynitride containing at least one of Al, Ti, and Cr; a second material obtained by including at least one of Si, V, Ni, Y, Zr, Nb, Mo, Ta, and W in the first material; a third material obtained by including at least one of B and C in the first material; and a fourth material obtained by including at least one of B and C in the second material.
[Problem] To make the tips more difficult to damage. [Solution] The tips (30) are provided with a second cutting face (42) contiguous with a first cutting face (40), which contacts the cutting edge (32), the second cutting face facing a gullet (16) provided on the front side of the tip (30) in the rotation direction and the radially inside edge of the second cutting face contacting the outer circumferential edge of the base metal (12) that defines said gullet (16). The second cutting face (42) is formed so that the second rake angle (θ2), which is formed by a first reference line (L1) drawn from the center of rotation of the circular saw to the cutting edge (32) and a second reference line (L2) that passes through said inside edge along the second cutting face (42), is a negative angle.
Provided is a more durable wood or resin cutting tool. The wood or resin cutting tool is configured with steel or a superhard alloy as the base metal and a coating is formed on the rake face and/or the flank. The coating is provided with a periodic structural layer obtained from a chromium oxynitride, wherein high oxygen regions in which the oxygen concentration in the structure is high and low oxygen regions in which the oxygen concentration in the structure is lower than said high oxygen regions are manifested in a periodic pattern in the thickness direction of the coating. The periodic structural layer is formed so that the nitrogen concentration increases and decreases in a periodic pattern in the thickness direction to coordinate with the high oxygen regions and the low oxygen regions.
B27G 13/00 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires
B27B 33/00 - Outils de sciage pour scieries, machines à scier, ou dispositifs de sciage
In the present invention, in a milling cutter (10), cutting tips (38) are affixed to a plurality of attachment seats (28) disposed along the peripheral direction at least at the end surface side of the outer periphery of a cylindrical tool main body (11), and a supply hole (13) for fluid flow-through is provided to the center of the tool main body (11) extending in the axial direction thereof. The milling cutter (10) is provided with: a flow-through concavity (19) that interconnects with the supply hole (13) and is recessed coaxially with the end surface of the tool main body (11); and a lid member (31) affixed superposed to the flow-through concavity (19). Between the flow-through concavity (19) and the lid member (31) are provided a plurality of flow-through holes (25a) that interconnect the supply hole (13) and the vicinity of the plurality of cutting tips (38) at the outer periphery of the tool main body (11).
B23C 5/28 - Caractéristiques se rapportant à la lubrification ou au refroidissement
B23Q 11/10 - Dispositions pour le refroidissement ou la lubrification des outils ou des pièces travaillées
B24D 7/10 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler autrement que par la périphérie, p. ex. par le côtéBagues ou accessoires pour le montage de ces meules munies de moyens de refroidissement
A saw blade (10) has a metal base (12), and a plurality of tips (14) disposed on the outer periphery of the metal base (12). The plurality of tips (14) includes long tips (30) having a tooth line length in the radial direction of at least 4 mm, and short tips (40) having a tooth line length in the radial direction of less than 4 mm. The number of long tips (30) is 2 to 15% of the total number of long tips (30) and short tips (40), and is not less than two.
A cutting machine (1) has a disc-shaped tool (2), a saw head (10), two pairs of guides (3, 4), and a variable device (1a). The disc-shaped tool (2) has two surfaces. The saw head (10) rotatably holds the disc-shaped tool (2). The two pairs of guides (3, 4) are disposed in the saw head (10) and each pair of guides (3, 4) faces the two surfaces of the disc-shaped tool (2). The variable device (1a) changes the distances for the two pairs of guides (3, 4) such that a workpiece (20) passes between the two pairs of guides (3, 4) when the workpiece (20) is being cut by the disc-shaped tool (2).
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
Provided is a cutting blade, with which it is possible to improve flexural ridigity while reducing the thickness of the blade, thereby reducing the quantity of blade material used. The blade is an approximately 0.5 mm thick, nearly rectangular, elongated, plastically deformable thin plate, the base material of which comprises steel, a super hard alloy, or a steel material whose cutting edge alone is made of a super hard alloy; blade costs are reduced on account of the ability to reduce the use of costly materials. The angle of relief from the flank face of the blade is 0 degrees. A rigid chromium nitride film coats the blade in a prescribed area that includes the cutting edge of the cutting face. The blade is mounted to the mounting groove on the tool body, bent in a direction opposite to the direction of rotation. By reason of the twist angle of both edge surface sides of the blade being positive and negative, the depth of the blade is secured in a circumferential direction, and the bending rigidity of the blade will be improved over the bending rigidity of a blade that is not bent.
Provided is a rotary cutting tool with which it is possible to increase the flexural rigidity of an entire blade, even if the blade is thin. A cutter head for woodwork is provided with attachment grooves at four locations along the outer perimeter of a main body in the circumferential direction. The attachment grooves are slightly curved outward in the direction opposite from the rotary direction of the main body, and opposing sides of the main body are symmetrical in shape. A blade and a pressing fitting are mounted to each attachment groove. The blades are made of steel or cemented carbide, and are elastically deformable long, thin plates having a substantially rectangular shape with a thickness of approximately 0.5 mm. These blades are fixed so as to curve in an arc shape in the direction opposite from the rotary direction (R) and match the shape of the attachment groove. A twist angle, which is the inclination angle of the outer circumferential surface of the main body of the cutting blade with respect to the mandrel, is a negative twist angle that varies in curve at one end surface side of the main body, and is a positive twist angle that varies in curve at the other end surface side.
e) of the hard fundamental layer (18). The hard main layer (20), like the hard fundamental layer (18), is formed by PVD. The hard fundamental layer (18) is coated with the hard main layer (20) to suppress corrosion, thereby improving the wear resistance and corrosion resistance of a cemented carbide replaceable knife (10).
Blade attached to paper cutting machine, namely cutting
blade for bookmaking; blade attached to paper cutting
machine, namely cutting blade for paper working; blade
attached to paper cutting machine, namely cutting blade for
papermaking.
Disclosed is a flat cutting tool (10), wherein a blade member (11) is fixed on a mounting concavity (16) of a base member (15) using a wax material or an adhesive agent and a blade edge (11a) is formed on the side of a surface layer (12) of the blade member (11). The blade member (11) is formed by welding and joining the surface layer (12), which is a high-velocity tool steel with a high degree of hardness, a middle layer (13) that is an alloy steel with a lower hardenability than the high-velocity tool steel, and a lower layer (14) that is a mild steel with almost no hardenability. The blade member (11) is quenched and tempered, and the surface layer (12) is hardened to a degree of hardness suitable for a cutting tool and fixed on the mounting concavity (16) of the base member (15).
B26D 1/00 - Coupe d'une pièce caractérisée par la nature ou par le mouvement de l'élément coupantAppareils ou machines à cet effetÉléments coupants à cet effet
Provided is a wood cutting tool with improved wear resistance and corrosion resistance. A hard foundation layer (18) comprising chromium nitride (CrN) is coated with a PVD treatment on the cutting face (16) of a base material (12) comprising ultra-hard alloy or tool steel. This hard foundation layer (18) has a five-layer structure, namely a first layer (18a) to a fifth layer (18e), in which the layers are arranged successively from the base material (12) side. Furthermore, a main hard layer (20) comprising chromium oxide (Cr2O3) is coated on the outer surface of the fifth layer (18e) of the hard foundation layer (18). The main hard layer (20) is formed by means of a PVD treatment in the same way as the hard foundation layer (18). Erosion is suppressed and the wear resistance and corrosion resistance of an ultra-hard replacement blade (10) are improved by coating the main hard layer (20) on the hard foundation layer (18).
B27B 33/02 - Conception structurelle des lames de scie ou des dents de scie
B27G 13/08 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires en forme de disqueFraises à bois
Textile machines and apparatus; food or beverage processing
machines and apparatus; lumbering, woodworking, or veneer or
plywood making machines and apparatus; pulp making,
papermaking or paper-working machines and apparatus;
printing or bookbinding machines and apparatus; packaging or
wrapping machines and apparatus; plastic processing machines
and apparatus.
A circular saw cutting device in which discharge of surface exfoliation chips is promoted to prevent fracture of cutting teeth, suppressing deterioration in the lifetime of a circular saw. The circular saw cutting device (20) has a support surface (22a) for a beam (22) which defines an upper reference surface in workpiece cutting region. The beam (22) is provided with a saw tooth receiving member (24) in which a slit (28) for permitting the entry of the outer peripheral part of the circular saw (C) is formed. Further, an upper space (30) extending upward from the outer peripheral part of the circular saw (C) is defined so as to communicate with the upper portion of the slit (28). Further, a side space (32) is provided in the workpiece cutting region, on the front side in the rotational direction of the outer peripheral part of the circular saw (C). The side space (32) communicates with one end of the slit (28) and with upper space (30) and discharges surface exfoliation chips (d) of workpieces (W, W) to the outside.
B23D 45/06 - Machines à scier ou dispositifs de sciage à lames circulaires ou à disques à friction la lame circulaire étant fixée sous une table de travail fixe
B23D 47/00 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers
B23D 47/02 - Machines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers des bâtisMachines à scier ou dispositifs de sciage travaillant au moyen de lames circulaires, caractérisés uniquement par la structure d'organes particuliers d'agencements de guidage de la table de travail ou du chariot porte-scie
Lumbering and woodworking hand-held tools and floor-standing machine tools, namely, circular saw blades for power saws, milling cutters, knives for use on planers, chippers, flakers, grinders, slicers, stay-logs, and molders, router bits for power routers, drill bits for power drills, and bit tips for power routers and power drills
A finger joint cutter exhibiting good cutting precision by suppressing occurrence of blow out or lip out. The finger joint cutter has a plurality of blade array groups (44a-44d) each consisting of a plurality of cutting blades (14) arranged at a predetermined pitch L in the direction R of the axis of rotation and cuts a joint finger by making the cutting blades (14) cut simultaneously into the end of a material to be cut. The cutting blade (14) is constituted of any one of a main blade (46) or an auxiliary blade (48). The face (50) of the main blade (46) is tapered to become thinner toward the outer diameter side. The width dimension l1 on the face (54) of the auxiliary blade (48) in the direction R of the axis of rotation is set smaller than the width dimension l2 on the face (50) of the main blade (46) in the direction R of the axis of rotation. The pitch L is set above the width dimension l2 of the main blade (46). Furthermore, the main blade (46) is provided such that it adjoins the auxiliary blade (48) in the direction R of the axis of rotation but the main blades (46) do not adjoin each other in the direction R of the axis of rotation.
B27F 1/16 - Fabrication d'assemblages à doigts, c.-à-d. en forme de coins s'engageant les uns dans les autres face à face à l'inverse des queues d'aronde
B27G 13/14 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires pour tailler des profils pour tailler des rainures ou des tenons
Substitute edge (1) consisting only of chip (1a) cut out from a sintered blank having ultrahigh-hardness sintered layer (2) and sintered hard alloy layer (3). The chip (1a) is cut out from the sintered blank so that the ultrahigh-hardness sintered layer (2) lies on the reverse side of edge (1c). Cutting edge (2a) is formed at the apical end rim of the chip (1a). On the reverse side of edge (1c) of the chip (1a), there is provided groove (2b) extending in the direction of edge length of the cutting edge (2a).
B27G 13/00 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires
B27G 13/08 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires en forme de disqueFraises à bois
B23B 27/14 - Outils de coupe sur lesquels les taillants ou éléments tranchants sont en matériaux particulier
A plate-like cutting tool produced at low cost and having less strain. A planer blade is made up essentially of a base (12) constructed from a steel material and cutting blades (14, 14) laser welded to the base (12), along opposite end edges (12a, 12b) located in the longitudinal direction of the base (12). In the back side (18) of the base (12) is a recess (22) engageable with an engagement section (24a) of a base supporting section (24) of a fixing jig (20). In the process of producing the planer blade, the base (12) is fixed on the base supporting section (22) while being engaged with the engagement section (24a) and then clamped and fixed in a pressing manner by a first base fixing tool (36). Also, a cutting blade (14) is made to be in contact with and fixed to the end edge (12a) through a cutting blade fixing tool (46). After that, the cutting blade (14) is fixed to the base (12) at the contact section between the end edge (12a) and the cutting blade (14) by laser welding mainly applied the base (12) side.
B23P 15/28 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe
A cover (31) for a face mill, comprising a side cover part (32) fitted to a housing (11) at an interval from the outer periphery of the face mill (21) and bottom cover plates (41, 42) fitted to the side cover part (32) on the bottom side of the face mill (21) and covering the bottom side of the face mill while leaving only a portion necessary for a cut material to pass therethrough in machining. Recessed parts (43, 44) are formed in the surfaces of the bottom cover plates (41, 42) facing the face mill so that a cutting blade (25) does not interfere with these surfaces during machining. A part of the cutting blade comes within the recessed parts (43, 44) of the bottom cover plates (41, 42). The boundaries of the recessed parts (43, 44) are formed in sloped faces (43a, 44a) tilted to expand toward the face mill (21).
B23Q 11/00 - Accessoires montés sur les machines-outils pour maintenir les outils ou les organes de la machine dans de bonnes conditions de travail ou pour refroidir les pièces travailléesDispositifs de sécurité spécialement combinés aux machines-outils, disposés dans ces machines ou spécialement conçus pour être utilisés en relation avec ces machines
B23C 5/06 - Fraises à surface, c.-à-d. fraises n'ayant qu'une surface de coupe pratiquement plate, ou principalement une telle surface
A long round material feeder capable of securely feeding long round materials to a cutting device having a reference plane on its upper side. A plurality of upper horizontal rollers (26, 26) having roller lower surfaces (26a, 26a) aligned with the upper reference plane (T) are disposed on the upper side of a pass line (PL) while crossing their rotating axes with the pass line. A plurality of lower horizontal rollers (28, 28) normally located at a lower first position to wait for the charge of the long round material (14) thereto and rising to a second position at a specified timing to press the long round material (14) against the upper horizontal rollers (26, 26) so as to secure the upper reference plane (T) are disposed on the lower side of the pass line (PL) while crossing their rotating axes (28b) with the pass line. Furthermore, a plurality of vertical rollers (30, 30) restraining the position of the long round materials (14) in the lateral direction are installed on the side of the pass line (PL) at specified intervals. Under the condition that the long round materials (14) are restrained by these rollers (26, 28, 30), the long round materials are fed to the cutting device on the downstream side.
B23Q 7/05 - Agencements pour la manipulation des pièces, spécialement combinés aux machines-outils ou disposés dans ces machines ou spécialement conçus pour être utilisés en relation avec ces machines, p. ex. pour le transport, le chargement, le positionnement, le déchargement, le triage au moyen de convoyeurs à rouleaux
B23B 13/00 - Agencements automatiques de transport, de serrage sur mandrins ou de guidage des produits bruts pour les machines à tourner
37 - Services de construction; extraction minière; installation et réparation
Produits et services
Metalworking machines and tools; mining machines and
apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; chemical
processing machines and apparatus; textile machines and
apparatus; food or beverage processing machines and
apparatus; lumbering, woodworking, or veneer or plywood
making machines and apparatus; pulp making, papermaking or
paper-working machines and apparatus; printing or
bookbinding machines and apparatus; agricultural machines
and implements; shoe making machines; leather tanning
machines; tobacco processing machines; packing or wrapping
machines and apparatus; plastic processing machines and
apparatus; rubber-goods manufacturing machines and
apparatus; stone working machines and apparatus; food mixing
machines for commercial use; food peeling machines for
commercial use; dish washing machines for industrial
purposes; food cutting, chopping and slicing machines for
commercial use; dish washing machines for household
purposes; lawnmowers; waste compacting machines and
apparatus; waste crushing machines. Scissors and the like; kitchen knives and the like; razors;
hand-operated hair clippers; chisels and the like;
broadaxes, sickles and the like; cutting tools (hand tools,
hand-held ones only); bushhammers (stone hammers); mallets;
hammers (hand-operated); screwdrivers and the like;
troweling and the like; vices; pincers and the like; picks
and the like; shovels and the like; razor strops (leather
strops); sharpening steels; whetstones (sharpening stones). Repair or maintenance of loading-unloading machines and
apparatus; repair or maintenance of construction machines
and apparatus; repair or maintenance of printing or
bookbinding machines and apparatus; repair or maintenance of
chemical processing machines and apparatus; repair or
maintenance of metalworking machines and tools; repair or
maintenance of shoe making machines and instruments; repair
or maintenance of leather tanning machines; repair or
maintenance of mining machines and apparatus; repair or
maintenance of machines and apparatus for processing foods
or beverages; repair or maintenance of machines and
apparatus for lumbering, woodworking, or veneer or plywood
making; repair or maintenance of textile machines and
apparatus; repair or maintenance of tobacco processing
machines; repair or maintenance of agricultual machines and
implements; repair or maintenance of machines and apparatus
for pulp making, papermaking or paper-working; repair or
maintenance of plastic processing machines and apparatus;
repair or maintenance of rubber-goods manufacturing machines
and apparatus; repair or maintenance of packing or wrapping
machines and apparatus; repair or maintenance of stone
working machines and apparatus; repair or maintenance of
food mixing machines for commercial use; repair or
maintenance of food peeling machines for commercial use;
repair or maintenance of dish washing machines for
industrial purpose; repair or maintenance of food cutting,
chopping and slicing machines for commercial use; repair or
maintenance of dish washing machines for household purposes;
repair or maintenance of lawnmowers; repair or maintenance
of waste compacting machines and apparatus; repair or
maintenance of waste crushing machines and apparatus; repair
or maintenance of scissors and the like; repair or
maintenance of kitchen knives and the like; repair or
maintenance of razors; repair or maintenance of
hand-operated hair clippers; repair or maintenance of
chisels and the like; repair or maintenance of broadaxes,
sickles and the like; repair or maintenance of cutting tools
(hand tools, hand-held ones only); repair or maintenance of
bushhammers (stone hammers); repair or maintenance of
mallets; repair or maintenance of hammers (hand-operated);
repair or maintenance of screwdrivers and the like; repair
or maintenance of troweling and the like; repair or
maintenance of vices; repair or maintenance of pincers and
the like; repair or maintenance of picks and the like;
repair or maintenance of shovels and the like; repair or
maintenance of razor strops (leather strops); repair or
maintenance of sharpening steels; repair or maintenance of
whetstones (sharpening stones).
A power transmission mechanism (20) of a circular saw cutting machine comprises a set of shafts composed of an input side shaft (21), an intermediate shaft (31), and an output side shaft (51), wherein the intermediate shaft (31) has, secured to it, a first scissors gear (33) consisting of a main gear (34) and a sub-gear (35) that mesh with a first helical gear (23) fixed on the input side shaft (21) and has a second scissors gear (41) consisting of a main gear (42) and a sub-gear (43) that mesh with a second helical gear (53) fixed on the output side shaft (51). On/off or regulation of backlash removing force for removing backlash between the gears from the input side shaft (21) to the output side shaft (51) is performed by remotely controlling backlash removing force of the first and second scissors gears (33, 41) by a regulation mechanism of a single system from the outside of the shafts.
F16H 55/18 - Dispositifs particuliers de rattrapage de jeu entre les dentures
F16H 1/08 - Transmissions à engrenages pour transmettre un mouvement rotatif sans engrenages à mouvement orbital comportant uniquement deux organes engrenés dont les axes sont parallèles les organes ayant des dents en hélice, en chevrons ou similaires
A disc-shaped tool 10 includes a plurality of virtual regions formed such that it is surrounded by two radius lines extending from a rotation center of a disc-shaped base metal 11 and two concentric circles on the base metal disposed around the rotation center. A central angle formed by the two radius lines is equal to or less than 90°, and the number of the virtual regions is 4 to 24. The concentric circle located in a center of an interval of the two concentric circles forming the virtual region is in a range of 0. 6r to 0.8r with respect to the rotation center of the base metal when a maximum gullet bottom radius of the base metal is r. An overlapping of the virtual regions continuously adjoining each other is in a range of 0° to 12°. A minimum neighborhood distance between the adjoining slits is equal to or more than 0. 05r. A ratio of a length of an arc of the central concentric circle in each virtual region with respect to the interval of the two concentric circles in the virtual region is 3 to 6.
