The present invention is a mold machining method for cutting a mold using end mills that extend in an axial direction along a rotary shaft. The mold machining method comprises: pre-machining including a step for performing contour line machining of a wall surface of a mold using a plurality of end mills with different axial protrusion lengths in which, when the entire length dimension along the axial direction of the end mills is defined as a tool length L and the diameter dimension of a cutting blade of the end mills is defined as a blade diameter D, L/D ≥ 10 and a groove length which is the axial dimension of a chip discharge groove of the end mills is 3D or less; and a step in which the wall surface of the mold is finished after the pre-machining by reciprocating movement in the axial direction using another end mill having a larger L/D than the end mills used in the contour line machining and a groove length of 3D or less.
This cutting edge has a convex curved edge that is a curve convex toward the outer circumference of the tip of a cutting insert. A rake angle (α) in a normal direction of a rake face of the convex curved edge is a negative angle over an entire length of the convex curved edge, and gradually increases to the negative angle side as an end point on a rear end side of the convex curved edge is approached at a radiation angle (θ) of 15°-90°. Where a change amount of the rake angle (α) in the normal direction per 15° of an angle range of the radiation angle (θ) is σ1, σ1 ≤ 3.0°. Where a change amount of the rake angle in an axial direction per 15° of the angle range of the radiation angle (θ) is σ2, σ2 ≤ 6.0° when the radiation angle (θ) is 60°-90°.
An end mill includes a cutting edge portion, a shank, a bottom cutting edge located on a tip surface of the cutting edge portion, and a peripheral cutting edge located on an outer peripheral surface of the cutting edge portion, the bottom cutting edge has a bottom cutting edge outer peripheral portion that extends from an outer peripheral end of the bottom cutting edge to the shank side at an inclination angle of 3° or less, a flank angle of a bottom cutting edge outer peripheral portion primary flank face adjacent to the bottom cutting edge outer peripheral portion is larger than a flank angle of a peripheral cutting edge primary flank face adjacent to the peripheral cutting edge, and a width of the bottom cutting edge outer peripheral portion primary flank face is larger than a width of the peripheral cutting edge primary flank face.
A cutting insert includes a rake face, a seating surface facing the rake face, a flank face connecting the rake face and the seating surface, and a cutting edge formed in an ridgeline between the rake face and the flank face. The cutting edge includes a linear main cutting edge, a corner edge, and a wiper edge. A recess portion is provided in an end portion of the main cutting edge. The wiper edge is in an arc shape and connected to the corner edge. Viewed from a rake face side, an extension line of the main cutting edge being L1, a tangent line of the wiper edge perpendicular to L1 being L2, and a tangent line of the wiper edge passing through the point P being L3, an angle θ between L2 and L3 is 0.010°≤θ≤3.0°.
A coated cutting tool includes a substrate and a hard film that is formed thereon. The hard film is a nitride in which with respect to a total amount of metal elements (including metalloid), Al is 60 at % or more and 70 at % or less, Ti is 20 at % or more and 40 at % or less, and one or more selected from W, Cr, Ta, Nb, Zr, Mo, and V are 1 at % or more and 10 at % or less, and with respect to a total amount of metal elements (including metalloid), a nitrogen element, and an Ar element, Ar is contained in an amount of 0.01 at % or more and 0.15 at % or less. A crystal structure of the hard film is a face-centered cubic lattice structure, and a half-value width of an X-ray diffraction peak of a (111) plane is 0.75° or more and 0.95° or less.
Provided is a cutting edge replaceable rotary cutting tool that rotates around a rotary axis (O). The tool has a modular head having a cutting edge, and a tool body. The tool body is provided with a gripping part, a tapered part, and a connection part. The tapered part has a first region and a second region. In the rotary axis (O) direction, the distance (L1) between a point (P1) and a point (P2) is longer than the distance (L2) between a point (Q1) and a point (Q2), and an inclination angle (θ2) is greater than an inclination angle (θ1).
Provided is a plate-shaped cutting insert (5) that is detachably attached to a distal end portion of a tool body that is rotated about a central axis (C), the cutting insert (5) comprising a pair of cutting edges (4) that are spaced apart from each other around the central axis (C). Each of the cutting edges (4) has an arc-shaped outer peripheral cutting edge (11) extending toward the radial inner side with decreasing distance toward the axial distal end, and an arc-shaped inner peripheral cutting edge (12) smoothly connected to the radial inner end of the outer peripheral cutting edge (11) and extending toward the axial base end with decreasing distance toward the radial inner side. A connection point (P) between the outer peripheral cutting edge (11) and the inner peripheral cutting edge (12) is positioned at the foremost distal end of the cutting insert (5), and the outer peripheral cutting edge (11) and the inner peripheral cutting edge (12) have the same radius of curvature (R) in at least regions immediately before and after the connection point (P).
[Problem] To make it possible, in a drill in which a honed surface is formed on a cutting edge, to suppress flank wear while improving the chipping resistance of the cutting edge by forming said honed surface with a radius. [Solution] In a cross section orthogonal to the extension direction of a main cutting edge 41, a honed surface 41a of the main cutting edge 41 is provided with a rake face–side honed surface 41a1 that describes a curve having a radius of curvature R1 near a rake face 41b formed on the rotation-direction front side of the main cutting edge 41 and a flank-side honed surface 41a2 that describes a curve having a radius of curvature R2 near a flank 7 formed on the rotation-direction rear side of the main cutting edge 41, and an angle θ is provided, toward the rake face 41b side, between the flank 7 and a tangent L1 at the flank 7-side end point of the curve forming the flank-side honed surface 41a2.
An end mill (1) extends axially along a center axis (C) and has cutting sections (3) at the tip side of the end mill (1). The cutting section (3) have chip evacuation flutes (4), bottom cutting edges, and outer-peripheral cutting edges (72). The chip evacuation flutes (4) each have: a first concave surface section (41) that, viewed in a cross-sectional plane perpendicular to the center axis (C), constitutes a concave curvilinear form that from the outer-peripheral cutting edge (72) extends, as heading radially inward, stretching in the end-mill rotational direction (T); a convex surface section (43) that, viewed in the cross-sectional plane, connects with the end of the first concave surface section (41) in the end-mill rotational direction (T) and constitutes a convex curvilinear form that extends in the end-mill rotational direction (T); and a second concave surface section (42) that, viewed in the cross-sectional plane, connects with the end of the convex surface section (43) in the end-mill rotational direction (T) and constitutes a concave curvilinear form that extends radially outward as heading along the end-mill rotational direction (T).
An end mill (1) extends in an axial direction along a central axis (C). The end mill (1) has a blade part (3) at the leading end of the end mill (1). The blade part (3) is provided with four or more sets of cutting blades (7) around the central axis (C). The rotation path of the cutting blades (7) around the central axis (C) has a diameter dimension (D) of 3 mm or less. The radial inner edge of a bottom blade (71) is disposed away from the central axis (C) in the radial direction. The rotation path of the bottom blade (71) around the central axis (C) makes a curved shape that is convex toward the leading end in a longitudinal sectional view along the central axis (C), and in this longitudinal sectional view, the radius of curvature (R) of the convex curve made by the rotation path of the bottom blade (71) is larger than the diameter dimension (D). A chip discharge groove (4) has a linearly extending groove transition part (10) located at the boundary between a trailing end part of the chip discharge groove (4) and the outer circumferential surface (3b) of the blade part (3). The ratio (L/D) between the diameter dimension (D) and the axial dimension (L) between the leading end of the bottom blade (71) and the trailing end of the chip discharge groove (4) is 2.0 or less.
A coated member of the present invention includes a substrate and a hard coating film that is formed on the surface of the substrate and includes a nitride or carbonitride of a metal element. A content of Al is 65 atom % or more and 85 atom % or less, a content of Cr is 15 atom % or more and 35 atom % or less, and a total content of Al and Cr is 90 atom % or more and 100 atom % or less in a total amount of the metal element and metalloid element contained in the hard coating film, and in an intensity profile obtained from a selected area diffraction pattern of a transmission electron microscope, a crystal plane exhibiting a maximum peak intensity is different between a vicinity of the substrate and a vicinity of the surface, in the vicinity of the substrate, a peak corresponding to a (111) plane or a (200) plane of a face-centered cubic lattice structure exhibits a maximum intensity, and in the vicinity of the surface, a peak intensity corresponding to a (220) plane is 0.6 times or more a larger one of a peak intensity corresponding to the (200) plane and a peak intensity corresponding to the (111) plane of the face-centered cubic lattice structure.
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/32 - Vacuum evaporation by explosionVacuum evaporation by evaporation and subsequent ionisation of the vapours
C22C 29/08 - Alloys based on carbides, oxides, borides, nitrides or silicides, e.g. cermets, or other metal compounds, e. g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
A two-flute ball end mill includes a cutting edge that is formed at an intersection ridge line between a groove wall surface of a gash groove and a flank surface; and the flank surface includes a first flank surface that forms a chisel edge and a second flank surface that extends from the first flank surface to a rear side in a rotation direction with a larger clearance angle. In a case where, as seen from a tip side in an axial direction, an intersection point between one cutting edge of two cutting edges and the chisel edge is defined as a first intersection point, and an intersection point between a flank surface boundary line between the first flank surface and the second flank surface of the other cutting edge of the cutting edges and the groove wall surface is defined as a second intersection point.
A rake surface of a cutting insert according to the present disclosure is formed with a first plane parallel to a seating surface. An outer periphery of the first plane includes a plurality of curved portions having different radii of curvature. On the rake surface, a breaker is provided between a cutting edge portion and the first plane around an entire circumference of the cutting insert. When a distance from the seating surface to a tip of the cutting edge portion in a thickness direction is denoted by L11, a distance from the seating surface to the first plane in the thickness direction is denoted by L12, and a distance from the seating surface to a deepest portion of the breaker in the thickness direction is denoted by L13, a relationship of L11>L12>L13 is satisfied over an entire circumference of the cutting edge portion.
This threading cutter (1) is provided with: a cutter body (2) that rotates about an axis; and a cutting blade part (3). The cutting blade part (3) is provided with a plurality of threading blades (6) that protrudes outward in the radial direction on the outer peripheral surface of the cutter body (2). Each of the plurality of threading blades (6) is provided side by side in the circumferential direction of the cutter body (2), and the axial positions thereof coincide with each other. When the cutting crest width of the threading blade (6) is denoted as W and the crest height of the threading blade (6) is denoted as H, the relationship of 3% ≤ W/H ≤ 10% is satisfied. When the rake angle of the threading blade (6) is θ, the relationship of - 20° ≤ θ ≤ − 5° is satisfied.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B23B 5/16 - Turning-machines or devices specially adapted for particular workAccessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
This coated cutting tool comprises a base material and a hard film on the base material. The hard film is a nitride or a carbonitride containing titanium (Ti) in an amount of 60 atom% - 95 atom% and silicon (Si) in an amount of 5 atom% - 40 atom% with respect to the total amount of metals including a semimetal. In the hard film, an atomic ratio (atom%) A of metal elements including a semimetal and an atomic ratio (atom%) B of nitrogen satisfy the relationship of 1.1 < B/A on the assumption that the total of the metal elements including a semimetal and non-metal elements is 100 atom%. The hard film has a cubic crystal structure, and the half-width of the (200) plane of the cubic crystal in X-ray diffraction is 0.75° - 1.10°.
Provided is a coated cutting tool having a hard coating on a base material. The hard coating is composed of a nitride or a carbonitride containing 50-70 at% of Al, 20-50 at% of Cr, and 4-15 at% of Si with respect to the total amount of metals including semimetals. In the hard coating, the atomic ratio (atom %) A of metal elements including semimetals and the atomic ratio (atom %) B of nitrogen satisfy the relationship 1.07
A coated tool of the present invention includes a substrate and a hard coating on the substrate. The hard coating is a nitride or a carbonitride containing 65 atom % or more and 90 atom % or less of Al and 10 atom % or more and 35 atom % or less of Cr with respect to a total amount of metal elements including metalloid elements, and containing 0.50 atom % or less of argon (Ar), and has a face-centered cubic lattice structure. The hard coating shows a maximum intensity Ia in an α angle range of 80° to 90° in an X-ray intensity distribution on an α-axis in a positive pole figure of a (111) plane of the face-centered cubic lattice structure, and an intensity in an α angle range of 0° to 70° is 35% or less of the maximum intensity Ia.
A polygonal plate-shaped cutting insert (1) comprises: a rake surface (2); a seating surface (3); side surfaces (10, 10A, 10B); and a mounting hole (7) that opens on the rake surface (2) and the seating surface (3) and penetrates through the cutting insert (1) in the thickness direction thereof, wherein: a cutting edge part (20) is provided on the ridge where the rake surface (2) and the side surfaces (10, 10A, 10B) intersect with each other; the cutting edge part (20) includes a corner blade (24) and a main cutting blade (21) connecting to the corner blade (24); the main cutting blade (21) is linear in both a plan view facing the rake surface (2) head-on and a side view facing the side surface (10B) head-on; and the corner blade (24) includes a first arcuate blade connecting to the main cutting blade (21), and an outermost peripheral arcuate blade positioned at the outermost peripheral part in the corner blade, the first arcuate blade and the outermost peripheral arcuate blade being arcuate cutting blades having different radii of curvature.
This cutting insert has a rake face (2), a seating face (3), side faces (10, 10A, 10B), and a mounting hole (7), wherein: a cutting edge portion (20) is provided on an intersecting ridge line between the rake face (2) and the side faces (10, 10A, 10B); the cutting edge portion (20) includes a corner cutting edge (24), a main cutting edge (21) connected to the corner cutting edge (20), a convex curved cutting edge (23) connected to the main cutting edge (21), and a wiper cutting edge (22) connected to the convex curved cutting edge (23); the side faces (10, 10A, 10B) have a first side face (11A) continuous with the main cutting edge (21), a second side face (11B) continuous with the wiper cutting edge (22), and a boundary region (11C) continuous with the convex curved cutting edge (23); in a side view when the side face (10B) is viewed from the front, the first side face (11A) and the second side face (11B) are demarcated to the left and right by the boundary region (11C) extending between the rake face (2) and the seating face (3); a clearance angle (θ1) of the main cutting edge (21) and a clearance angle (θ2) of the wiper cutting edge (22) satisfy the relationship θ1<θ2; and when an end point of the boundary region (11C) on the rake face side is defined as an end point (P) and a center line of the mounting hole (7) is defined as O1, the end point (P) is located in a position farther from the corner cutting edge (20) than the center line (O1) in the side view.
x1-xy1-y1-y (where 0.50≤x≤0.95 and 0.0≤y≤0.4); the columnar grains include grains of a face-centered cubic lattice structure including a first layer and a second layer therein; the first layer and the second layer are laminated alternately; adjacent layers are in contact at a twin plane angle; and the Al content of the first layer is greater than the Al content of the second layer.
Drills [other than hand-held tools]; cutting tools being parts of machines; cemented carbide tools [machines]; metalworking machines; metalworking machine tools; drilling bits [parts of machines].
A coated tool of the present invention includes a base material; and a hard coating film on the base material. The hard coating film is a nitride or carbonitride which contains aluminum (Al) of 65 atomic % or more and 90 atomic % or less and titanium (Ti) of 10 atomic % or more and 35 atomic % or less with respect to a total amount of metal (including metalloid) elements, and have a face-centered cubic structure. In the X-ray intensity distribution of the α axis of the positive pole figure with respect to the (111) plane of the face-centered cubic structure, the hard coating film have a maximum intensity Ia in the α angle range of 80° to 90° and an intensity in the α angle range of 0° to 70° is 30% or less of the Ia.
This tool holder includes a pocket portion provided with an attachment seat in a distal end portion, and is provided with a circular columnar portion on a rear end side of the pocket portion. In the circular columnar portion, if a virtual cylindrical surface including a cylindrical surface constituting a side surface of the circular columnar portion is defined, a first cylindrical surface closest to the pocket portion and a second cylindrical surface farthest from the first cylindrical surface are disposed on the virtual cylindrical surface. A recessed portion that is recessed further toward a radially inner side than the virtual cylindrical surface is disposed between the first cylindrical surface and the second cylindrical surface. The recessed portion has a maximum width tmax of at least 1.0 mm in a direction of a tool rotational central axis, and the first cylindrical surface and the second cylindrical surface are cylindrical ground surfaces formed coaxially with the tool rotational central axis.
B23C 5/06 - Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
26.
CUTTING INSERT AND CUTTING-EDGE-REPLACEABLE CUTTING TOOL
In this cutting insert, two cutting edges respectively including arc-shaped cutting edge parts extending in an arc shape in a plan view and linear cutting edge parts are provided in an intersection ridge line part between a rake face and a flank face. The cutting edges include a convex curved part moving away from a seating face and then moving close to the seating face as at least the arc-shaped cutting edge part moves away from the linear cutting edge parts. In a side view, the arc-shaped cutting edge parts include curvature change points between most protruding points farthest from the seating face and cutting edge tips of the arc-shaped cutting edge parts.
An end mill (1) comprises a cutting edge portion (3) and a shank (2) that are rotated around a central axis (O). The end mill (1) includes a bottom edge (11) located on the tip-end face of the cutting edge portion (10), and a peripheral cutting edge (13) located on the peripheral face of the cutting edge portion (10). The bottom edge (11) includes a bottom edge peripheral portion (11a) that extends closer to the shank at an inclination angle (α) of less than or equal to 3° with respect to a plane orthogonal to the central axis (O), from the peripheral end of the bottom edge toward the inside in the radial direction. The clearance angle of a bottom edge peripheral portion first clearance face (14a) adjacent to the bottom edge peripheral portion (11a) is greater than the clearance angle of the peripheral cutting edge first clearance face (14a) adjacent to the peripheral cutting edge (13). The width (W2) of the bottom edge peripheral portion first clearance face is greater than the width (W1) of the peripheral cutting edge first clearance face.
A coated tool comprising a base and a rigid coating film formed thereon. The rigid coating film is a nitride or carbonitride which contains Al and Cr in amounts of 70-90 atm.% and 10-30 atm.%, respectively, with respect to the total amount of the metallic (including semimetallic) elements and contains argon (Ar) in an amount of 0.50 atm.% or less with respect to the total amount of the metallic elements (including semimetals) and the nonmetallic elements. The rigid coating film has cubic and hexagonal crystal structures. The rigid coating film gives an X-ray intensity distribution regarding the α axis of a pole figure for the cubic (111) plane wherein, when the maximum intensity and the minimum intensity in the α-angle range of 10-90° are expressed by IA and IB, respectively, then IB is IA×0.5 or greater. The rigid coating film gives an X-ray intensity distribution regarding the α axis of a pole figure for the hexagonal (110) plane wherein, when the maximum intensity and the minimum intensity in the α-angle range of 10-90° are expressed by Ia and Ib, respectively, then Ib is Ia×0.5 or greater.
This coated tool has a base material and a hard coating film on the base material. The hard coating film has an A layer provided on the base material and a B layer provided on the A layer. The A layer is a nitride or carbonitride containing 50 at% to 70 at% Al and 30 at% to 50 at% Cr with respect to the total amount of elemental metals (including metalloids). The B layer is a nitride or carbonitride containing 70 at% to 85 at% Al and 15 at% to 30 at% Cr with respect to the total amount of elemental metals (including metalloids). The B layer has smaller particles than the A layer. Observation with a transmission electron microscope reveals that the B layer has phases with different striped-shape light/dark regions. The phases of different shades have a region containing a relatively large amount of Al and a region containing a relatively small amount of Al. The A layer and the B layer contain Ar.
This cutting insert (1) comprises a rake face (2), a seating face (3) that faces the rake face (2), a flank face (4) that connects the rake face (2) and the seating face (3), and a cutting edge (5) that is formed at the intersecting ridgeline between the rake face (2) and the flank face (4), wherein: the cutting edge (5) is configured from a straight-line main cutting edge (5b), a corner edge (5a), and a wiper edge (5c), in said order; a recess (6) is provided to the end of the main cutting edge (5b) that is opposite of the end connecting to the corner edge (5a); the wiper edge (5c) is formed in an arced shape and is connected by a tangent line to the corner edge (5a); and, where an extension line of the main cutting edge (5b) is L1, a tangent line of the wiper edge (5c) that is perpendicular to the extension line L1 of the main cutting edge (5b) is L2, and a tangent line of the wiper edge (5c) that passes through the end point P of the wiper edge (5c) which is toward the corner cutting edge (5a) is L3, the angle θ formed by the tangent line L2 and the tangent line L3 is within the range 0.010° ≤ θ ≤ 3.0° when viewed from the side facing the rake face (2).
A coated cutting tool according to an embodiment of the present invention comprises a base material and a hard film formed on the base material. The hard film is a nitride in which, with respect to the total amount of metal elements (including semimetals), contains 60-70 at% Al, 20-40 at% Ti, and 1-10 at% of at least one element selected from among W, Cr, Ta, Nb, Zr, Mo, and V, and which, with respect to the total amount of metal elements (including semimetals), elemental nitrogen, and elemental Ar, contains 0.01-0.15 at% Ar. The crystal structure of the hard film is a face-centered cubic lattice structure. The half-width of the X-ray diffraction peak of a (111) face is 0.75-0.95°.
Metalworking machines and tools; metalworking machine tools; cutting tools for machinery; cutting machines for metal working; drill bits, being parts of metalworking machines; drilling tools for use with metalworking machines; cutting tools for machinery, namely, end mills; cutting inserts and cutting tips for use with cutting tools; cemented carbide cutting tools; cemented carbide tips for use with machine tools; diamond-pointed metal-cutting tools; sintered diamond cutting tools; sintered cBN (cubic boron nitride) cutting tools; gear cutters, being machine tools; drilling machines for metalworking; milling machines for metalworking; chucks, being parts of metal working machines and tools; holders for cutting tools, being parts of machines; holding devices for metal working machines and tools; taps, being metalworking machine tools; threading machines; machine tools for ceramic processing.
An end mill includes: an end mill body configured to be rotatable around an axis; a chip discharge groove configured to extend from a tip in an axial direction of the end mill body toward a rear end side in the axial direction while twisting around the axis; and outer peripheral cutting edges each being configured to be formed at an intersection ridge portion on a forward side in a rotation direction between the chip discharge groove and an outer peripheral flank face. At least one outer peripheral cutting edge includes a plurality of notch portions that discontinue the outer peripheral cutting edge. Circumferential positions of all the notch portions in the end mill body do not overlap each other.
A coated cutting tool includes a substrate and a hard coating film. The hard coating film includes a b layer which is disposed on the substrate, a c layer which is a multilayer coating film laminated on the b layer and in which a c1 layer of a nitride or a carbonitride containing Al and Cr and a c2 layer of a nitride or a carbonitride containing Ti and Si are alternately laminated with a film thickness of 50 nm or less, respectively, and a d layer which is disposed on the c layer and is a nitride or a carbonitride of TiSi. The c layer contains 0.10 atomic % or less of Ar with respect to a total amount of a metal (including metalloid) element and a non-metal element.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
An end mill includes: at a distal end portion side in a rotation axis direction of a tool body, a plurality of cutting edges continuous from a center side to an outer peripheral side in a radial direction and adjacently arranged in a rotation direction of the tool body; gashes formed on front sides in a rotation direction of the respective cutting edges; and chip discharge flutes continuous with the gashes. The gashes are composed of distal end side depressed faces formed along a distal end side axis making an acute angle with the rotation axis and rear side depressed faces formed along a rear side axis making a smaller acute angle with the rotation axis than the distal end side axis. The distal end side depressed faces and the rear side depressed faces are formed to have shapes overlapping with one another.
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
A two-edged ball end mill in which a cutting edge is formed at each intersection ridge line between a groove wall surface of a gash groove and a flank surface, the flank surface including a first flank surface for forming a chisel edge, and a second flank surface extending rearward in a rotational direction from the first flank surface at a large flank angle. As seen from the axial-direction distal-end side, a second intersection point is positioned farther forward in the rotational direction than a reference line, where a first intersection point is the point of intersection between one of the two cutting edges and the chisel edge, the reference line is a straight line that passes through an axis line and is orthogonal to a cutting edge tangent line for the first intersection point, and the second intersection point is the point of intersection between a flank surface interface line linking the first and second flank surfaces of the other of the two cutting edges and the groove wall surface. The flank surface interface line for the other cutting edge intersects the cutting edge tangent line of the one cutting edge.
This coated member includes a substrate and a hard coating that is formed on the surface of the substrate and includes a nitride or carbide of a metal element. Of the total amount of metal elements and metalloid elements in the hard coating, the Al content is 65–85 atm%, the Cr content is 15–35 atm%, and the total Al and Cr content is 90–100 atm%. The crystal plane that represents the maximum peak intensity of an intensity profile obtained from a selected area diffraction pattern obtained by transmission electron microscope is different for the vicinity of the substrate and the vicinity of the surface. For the vicinity of the substrate, the peak that corresponds to the (111) or (200) plane of a face-centered cubic lattice structure represents the maximum intensity. For the vicinity of the surface, the peak intensity that corresponds to the (220) plane of a face-centered cubic lattice structure is at least 0.6 times the greater of the peak intensity that corresponds to the (200) plane of a face-centered cubic lattice structure and the peak intensity that corresponds to the (111) plane.
A rake face of a cutting insert according to the present disclosure is formed with a first plane parallel to a seating surface. The outer periphery of the first plane includes a plurality of curved portions having different radii of curvature, and the outer periphery of the first plane near the corners is formed so as to protrude toward the side of the cutting insert near the corners. The rake face is equipped with a breaker around the entire circumference of the cutting insert between a cutting edge section and the first plane. The relationship L11 > L12 > L13 is satisfied for the entire circumference of the cutting edge, where L11 is the distance from the seating surface to the tip of the cutting edge section in the thickness direction, L12 is the distance from the seating surface to the first plane in the thickness direction, and L13 is the distance from the seating surface to the deepest part of the breaker in the thickness direction.
Metalworking machines and tools; drilling tools for use with
metalworking machines; metalworking machine tools; cutting
tools for machinery; cutting machines for metalworking;
drill bits, being parts of metalworking machines; tool bits
for metalworking machines; cutting tools for machinery,
namely, end mills; cutting inserts and cutting tips for use
with cutting tools; cemented carbide cutting tools; cemented
carbide tips for use with machine tools; diamond-pointed
metal-cutting tools; sintered diamond cutting tools;
sintered Cubic Boron Nitride cutting tools; gear cutters,
being machine tools; drilling machines for metalworking;
milling machines for metalworking; chucks, being parts of
metalworking machines and tools; holders for cutting tools,
being parts of metalworking machines; holding devices for
metalworking machines and tools; taps, being metalworking
machine tools; threading machines.
A coated tool of the present invention includes a base material and a hard coating film on the base material. The hard coating film is a nitride or carbonitride containing aluminum (Al) of 65 atomic % or more 90 atomic % or less, titanium (Ti) of 10 atomic % or more 35 atomic % or less, a total of aluminum (Al) and titanium (Ti) of 85 atomic % or more, and argon (Ar) of 0.20 atomic % or less. The hard coating film satisfies a relationship of Ih×100/Is≤12 when a peak intensity of a (010) plane of AlN of a hexagonal close-packed structure is Ih and a sum of peak intensities due to predetermined nine crystal planes of TiN and AlN is Is in an intensity profile obtained from a selected area diffraction pattern of a transmission electron microscope.
A coated tool according to the present invention comprises a base material and a hard coating film on the base material. The hard coating film has a face-centered cubic lattice structure and is formed of a nitride or a carbonitride containing 65-90 at.% of Al, 10-35 at.% of Cr, and not more than 0.50 at.% of argon (Ar), with respect to the total amount of metal (including semi-metal) elements. The hard coating film exhibits, in an X-ray intensity distribution along the α-axis in a positive electrode dot diagram relating the (111) surface of the face-centered cubic lattice structure, a maximum intensity Ia in the α angle range of 80-90°, and the intensity Ia in the α angle range of 0-70° is not more than 35% of the maximum intensity Ia.
Metalworking machines and tools in the nature of metalworking machine tools for the cutting, forming, shaping and finishing of metallic materials; drilling tools for use with metalworking machines; metalworking machine tools; cutting tools for machinery, namely, diamond-pointed metal cutting tools, thread milling cutters, broaches being machine tools, chasers, milling cutters, reamers being machine tools; cutting machines for metalworking; drill bits, being parts of metalworking machines; tool bits for metalworking machines; cutting tools for machinery, namely, end mills; cutting inserts and cutting tips for use with cutting tools being parts of metal cutting machines; cemented carbide cutting tools; cemented carbide tips for use with machine tools; diamond tools, namely, diamond coated cutting tools; sintered diamond cutting tools; sintered Cubic Boron Nitride cutting tools; gear cutters, being machine tools; drilling machines for metalworking; milling machines for metalworking; chucks, being parts of metalworking machines and tools; holders for cutting tools, being parts of metalworking machines; holding devices for metalworking machines and tools; taps, being metalworking machine tools; threading machines
Provided is a coated cutting tool in which a surface of a substrate is coated with a hard coating film. The hard coating film includes: a layer (A) disposed on the surface of the substrate, and having a face-centered cubic lattice structure, in which the total content ratio of W and Ti is at least 85 atomic %, and which contains W as the most abundant element and Ti as the next most abundant element among metal (including metalloid) elements; and a layer (B) disposed on the layer (A) and having a face-centered cubic lattice structure, which is composed of nitrides or carbonitrides containing Al, Cr, and Si, and in which, among metal (including metalloid) elements, the Al content ratio is at least 50 atomic %, the total content ratio of Al and Cr is at least 85 atomic %, and the Si content ratio is 4 to 15 atomic %.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/16 - Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
44.
INDEXABLE CUTTING TOOL HOLDER AND INDEXABLE CUTTING TOOL
A mounting seat bottom surface facing a holder rotation direction; a first mounting seat wall surface (3b) facing an outer peripheral side of the holder main body (1), and a first relief portion (3d) on a corner portion where they intersect, are formed on an outer peripheral portion of a tip of a holder main body (1) rotated in a direction around an axis, on the inner peripheral side of the first mounting seat wall surface (3b), an inclined face (6) is formed in a range from an end edge (3b1) of the first mounting seat wall surface (3b) to 2 mm or less in the inner peripheral side, and the inclined face (6) being retracted toward the posterior end side in the axial direction as being extended toward the inner peripheral side, and an inclination angle θ is 20° or more and 50° or less.
Provided is an end mill which includes an end mill main body having a bottom blade having a convex hemispherical shape, and a hard coating film coated on at least a surface of a distal end portion of the end mill main body. A diameter D (mm) of the bottom blade is 2 mm or less. A ratio W/D of a width W (mm) of a chisel portion to the diameter D (mm) is within a range of 0.020 to 0.060. A ratio L/D of a facing length L (mm) of chip discharge grooves to the diameter D (mm) is within a range of 0.014 to 0.090. A rake angle of the bottom blade in a range in which a chisel edge is formed in the chisel portion is within a range of −15° to −30°.
Provided is an end mill having: an end mill body capable of rotating about an axis; a chip discharge groove extending from the axial-direction distal end of the end mill body toward the axial-direction rear-end side thereof while twisting about the axis; and an outer peripheral edge formed on an intersection ridgeline part between the chip discharge groove and an outer peripheral flank surface, the intersection ridgeline part being located on the rotational-direction forward side. At least one outer peripheral edge has a plurality of notches that make the outer peripheral edge non-continuous. None of the circumferential-direction positions of the notches in the end mill body overlap each other.
This end mill includes: an end mill body having a rotating shaft that defines a tip end and a rear end; cutting edges formed on the tip end side of the end mill body; a plurality of chip discharge grooves on the cutting edges, the chip discharge grooves extending while twisting along the rotating shaft; and a plurality of outer peripheral edges formed on an intersection ridge on the front side in a rotation direction between the chip discharge grooves and an outer peripheral relief face. The cutting edges have a plurality of notches that make the outer peripheral edges discontinuous. A first notch disposed most on the rear end side among all of the notches is provided on a first outer peripheral edge. In a right-angled cross section of the rear end of the cutting edges, a dividing angle of at least one of the outer peripheral edges differs from the dividing angle of the other outer peripheral edges, and the dividing angle of the first outer peripheral edge is smallest.
A coated cutting tool which has, on a surface of a substrate, a layer A of a face-centered cubic lattice structure which is a nitride or carbonitride containing 50 atom % or more of Al, 20 atom % or more of Cr, 85 atom % or more of Al and Cr, and 4 atom % or more and 15 atom % or less of Si, and a layer B provided on the layer A. The layer B is a nitride or carbon nitride which contains 70 atom % or more and 90 atom % or less of Ti, 5 atom % or more and 20 atom % or less of Si, and 1 atom % or more and 10 atom % or less of Nb or Cr in terms of a total amount of metal (including metalloid) elements, and has the face-centered cubic lattice structure.
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
B23B 27/14 - Cutting tools of which the bits or tips are of special material
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/32 - Vacuum evaporation by explosionVacuum evaporation by evaporation and subsequent ionisation of the vapours
This coated cutting tool is provided with a base material and a hard coating film. The hard coating film comprises: a layer b that is arranged on the base material; a layer c that is a multilayer film which is arranged on the layer b, and which is obtained by alternately stacking layers c1 of a nitride or carbonitride that contains Al and Cr and layers c2 of a nitride or carbonitride that contains Ti and Si in such a manner that each one of the layers c1 and c2 has a thickness of 50 nm or less; and a layer d that is arranged on the layer c, while being formed of a TiSi nitride or carbonitride. The layer c contains 0.10% by atom or less of Ar relative to the total amount of metal elements (including semimetal elements) and non-metal elements. If the total amount of metal elements (including semimetal elements), nitrogen, oxygen, carbon and Ar is taken as 100% by atom, the atomic ratio A of nitrogen and the atomic ratio B of the metal elements (including semimetal elements) in the hard coating film satisfy the relational expression 1.02 < A/B.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/22 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
50.
CUTTING INSERT AND CUTTING-EDGE-REPLACEABLE CUTTING TOOL
This cutting insert (1) has two cutting blades (5, 6) that are formed at a cross-ridge line part between a rake face (2) and a flank face (4), and that each comprise: a circular arc-like cutting-blade portion (5a, 6a) that extends in a circular arc-like shape in a planar view; and a linear cutting-blade portion (5b, 6b). The cutting blades (5, 6) each have a protruding curved portion (17) that comes close to a seating face (3) after having moved away from the seating face (3) in association with at least the corresponding circular arc-like cutting-blade portion (5a, 6a) moving away from the linear cutting-blade portion (5b, 6b). In a side view, the circular arc-like cutting-blade portions (5a, 6a) each have a curvature changing point (Q1, Q2) located between the most protruding point (S1, S2) located farthest away from the seating face (3) and a cutting-edge tip (2a, 2b) of the corresponding circular arc-like cutting-blade portion.
A coated tool according to the present invention comprises a base material and a hard coating film on the base material. The hard coating film is a nitride or carbonitride containing 65-90 at.% Al and 10-35 at.% Ti with respect to the total amount of elemental metal (including semimetals) and has a face-centered cubic lattice structure. In the X-ray intensity distribution of the α-axis in a positive electrode dot diagram in relation to the (111) surface of the face-centered cubic lattice structure, the hard coating film exhibits a maximum intensity Ia in the α angle range of 80-90°, and the intensity in the α angle range of 0-70° is 30% or less of the maximum intensity Ia.
In this cutting tool with a replaceable cutting head, a cutting head including a cutting edge is detachably attached to a tip end portion of a shaft-like tool main body rotated around an axis in a tool rotation direction. The tool main body and the cutting head are attached to each other when an abutment surface of the tool main body on a tip surface of the tool main body abuts and adheres to an abutment surface of the cutting head on a posterior end surface of the cutting head. A recessed portion and a projecting portion able to be inserted into this recessed portion are respectively formed on the posterior end surface of the cutting head and the tip surface of the tool main body. The recessed portion and the projecting portion are formed to increase in width in a circumferential direction toward an outer peripheral side.
Provided is a coated cutting tool, which includes a hard coating film containing a layer (b) formed of a nitride or a carbonitride, a layer (c) which is a layered coating film formed by alternately layering a nitride or carbonitride layer (c1) that contains 55 atom % or more of Al, Cr having a second highest content percentage, and at least B and a nitride or carbonitride layer (c2) that contains 55 atom % or more of Al and Ti having a second highest content percentage, each layer having a film thickness of 50 nm or less. A peak intensity Ih ascribable to a hcp (010) plane of AlN in the layer (c) and the total peak intensity Is ascribable to a plurality of predetermined crystal phases satisfy a relationship of Ih×100/Is≤15.
Provided is a coated cutting tool, which includes a hard coating film containing a layer (b) formed of a nitride or a carbonitride, a layer (c) which is a layered coating film formed by alternately layering a nitride or carbonitride layer (c1) that contains 55 atom % or more and 75 atom % or less of Al, Cr having a second highest content percentage, and at least Si and a nitride or carbonitride layer (c2) that contains 55 atom % or more and 75 atom % or less of Al and Ti having a second highest content percentage, each layer having a film thickness of 50 nm or less, and a layer (d) that is a nitride or carbonitride that contains, with respect to a total amount of metal elements (including metalloid elements), 55 atom % or more and 75 atom % or less of Al, Cr having a second highest content percentage.
B32B 27/14 - Layered products essentially comprising synthetic resin next to a particulate layer
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B23C 5/16 - Milling-cutters characterised by physical features other than shape
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/32 - Vacuum evaporation by explosionVacuum evaporation by evaporation and subsequent ionisation of the vapours
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
An objective of the present invention is to provide an end mill for use in deep machining, the end mill being easily manufactured and making to possible to mitigate biting into the material to be cut, thereby improving the quality of the machined surface. This end mill comprises a shank part which extends along a central axis, and a cutting part which is positioned to the distal side of the shank part and in which a plurality of outer peripheral blades are provided along the circumferential direction extending in a spiral shape about the central axis, the shank part having a smaller outer diameter at least at the site where the shank part is connected to the blade part than the outer diameter at the rear end of the shank part-side of the outer peripheral blades, and the boundary between the cutting part and the shank part being provided with a conical surface which is connected to the rear end of the of the outer peripheral blades, and of which the rotational trajectory around the central axis forms a truncated cone shape.
[Problem] To improve the properties by which chips are discharged to chip discharge grooves via notches positioned to the front side, in the rotational direction, of a plurality of cutting blades while maintaining a constant rigidity at the distal end of the tool body. [Solution] An end mill comprising a plurality of cutting blades which are provided continuous with the distal end-side, in a rotational axis O direction, of a tool body from the radially central-side to the external circumferential-side, and which are arranged next to each other in a rotational direction r of the tool body, notches which are formed to the inside, in the rotational direction, of respective cutting blades, and discharge grooves which are continuous with the notches, wherein the notches are formed from distal end-side recesses 8, 9 formed along a distal side axis P1, which forms an acute angle θ1 with the rotational axis O, a rear-side recesses 10, 11 formed along a rear-side axis P2, which forms an acute angle θ2, smaller than the angle formed by the distal side axis P1, with the rotational axis O, and the distal end-side recesses 8, 9 and the rear-side recesses 10, 11 form mutually overlapping shapes.
B23C 5/10 - Shank-type cutters, i.e. with an integral shaft
B23P 15/34 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters
Provided is a coated cutting tool, which includes a hard coating film containing a layer (b) formed of a nitride or a carbonitride, a layer (c) which is a layered coating film formed by alternately layering a nitride or carbonitride layer (c1) that contains 55 atom % or more and 75 atom % or less of Al, Cr having a second highest content percentage, and at least Si and a nitride or carbonitride layer (c2) that contains 55 atom % or more and 75 atom % or less of Al and Ti having a second highest content, and a layer (d) that is a nitride or carbonitride that contains, with respect to a total amount of metal elements (including metalloid elements), 55 atom % or more and 75 atom % or less of Al and Ti having a second highest content percentage, the content percentage of Ti being 20 atom % or more.
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B32B 17/06 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like comprising glass as the main or only constituent of a layer, next to another layer of a specific substance
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
A coated cutting tool includes a substrate and a hard film on coated on the substrate. The hard film contains a complex nitride of Al and Cr. The hard film includes aggregates of columnar grains grown on the substrate along the thickness of the film. The nitride has an Al content of 60 atom % or more, a Cr content of 10 atom % or more, and a total content of Al and Cr of 90 atom % or more relative to the total amount of metal and metalloid elements. The complex nitride has the highest peak intensity assigned to crystal plane (311) of an fcc structure in X-ray diffractometry. In the hard film, the ratio of an X-ray diffraction intensity of plane (311) to the intensities of the other planes is 1.30 or more. A method and a system are also provided for manufacturing the coated cutting tool by chemical vapor deposition.
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
A corner edge (3) is formed in a corner portion of a polygonal surface of an insert body (1) in a polygonal plate shape, a major cutting edge (4) and a minor cutting edge(5) are formed from a corner-edge first end portion (3a) of the corner edge (3), the minor cutting edge (5) comprises a first minor cutting edge (5A) contacting the major cutting edge (4) and a second minor cutting edge (5B) on an opposite side of the major cutting edge (4), the major cutting edge (4) and the first minor cutting edge (5A) are located on a parallel region (A) extending along a direction parallel with a reference surface perpendicular to an insert center line (L), and the second minor cutting edge(5B) comprises an inclined region (B), which inclines so as to be gradually recessed toward the insert center line (L) direction as the position of the inclined region (B) approaches the opposite side to the major cutting edge (4).
In the present invention, a convex arc-shaped corner blade (3) centered at a corner blade center line is formed at a corner section of a polygonal surface (2) of a polygonal plate-like insert body (1), the polygonal surface (2) has a land section (7) formed so as to gradually protrude in the insert center line direction from the corner blade (3) toward the inner side of the polygonal surface (2), and the polygonal surface (2) has, at a location inside of the land section (7), a rake face section (8) formed so as to gradually recede in the insert center line direction toward the inner side of the polygonal surface (2). In a range of 40° angle that is along the corner blade (3) from a first corner blade end to a second corner blade end and that is centered at the corner blade center line, the inclination angle (θ1) of the land section (7) with respect to a reference surface (P) perpendicular to the insert center line is equal to or greater than the inclination angle (θ2) of the rake face section (8) with respect to the reference surface (P), in a cross section taken along the corner blade center line.
This coated tool has a base material and a hard coating film that is present on the base material. The hard coating film is formed of a nitride or carbonitride that contains from 65% by atom to 90% by atom of aluminum (Al), from 10% by atom to 35% by atom of titanium (Ti), with the total of the aluminum (Al) and the titanium (Ti) being 85% by atom or more, and 0.20% by atom or less of argon (Ar). With respect to the intensity profile of the hard coating film as obtained from the selected area diffraction pattern thereof by means of a transmission electron microscope, the peak intensity Ih of the (010) plane of AlN and the sum Is of the peak intensities assigned to specific nine crystal planes of TiN and AlN in the hexagonal close-packed structure satisfy the relational expression (Ih × 100/Is) ≤ 12.
In the present invention, formed on the tip-end outer peripheral portion of a holder body (1) that is caused to rotate around an axis in a holder-rotating direction is an insert mounting seat (3) provided with: a mounting-seat bottom surface facing in the holder-rotating direction; a first mounting-seat wall surface (3b) facing the outer peripheral side of the holder body (1); and a first relief area (3d) formed at the corner where the bottom surface and the wall surface intersect. Formed on the holder-body (1) inner peripheral side of the first mounting seat wall surface (3b) is a sloped surface (6) having an edge (P) of the axial tip end side within a range of 2 mm or less from an edge (3b1) of the axial tip end side of the first mounting seat wall surface (3b) toward the radially inner peripheral side, the sloped surface extending toward the axially rear end side as same approaches the the inner peripheral side. The angle of incline (θ) with respect to a plane (R) perpendicular to the axis of the sloped surface (6) in a cross-section along the axis is 20-50 degrees.
What is presented is a cutting insert including a polygonal plate-shaped insert main body that includes: two polygonal surfaces; a side surface; and a cutting edge, the insert main body has a mounting hole that is centered on an insert center line passing through centers of the two polygonal surfaces, the cutting edge includes a major cutting edge extending from a first end of a corner edge located at a corner of the polygonal surface, and, in the opening of the mounting hole, a plurality of protrusions protruding with respect to a boss surface around an opening of the mounting hole are formed at intervals in a peripheral direction in an inner periphery side region of the major cutting edge.
Provided is an end mill that has an end mill body having a convex hemispherical bottom blade 5a, and a hard film coated on the surface of at least the tip portion of an end mill body 1. The diameter D (mm) of the bottom blade 5a is 2 mm or less. The ratio W/D of the width W (mm) of a chisel portion 10 to the diameter D (mm) is in the range of 0.020 to 0.060. The ratio L/D of the amount of misalignment L (mm) between chip discharge grooves 7 to the diameter D (mm) is in the range of 0.014 to 0.090. The rake angle of the bottom blade 5a in the range where a chisel edge 10a is formed in the chisel portion 10 is within the range of -15° to -30°.
Provided is a coated cutting tool in which the surface of a substrate is coated with a hard coating film. The hard coating film includes: a layer A disposed on the surface of the substrate, and having a face-centered cubic lattice structure, in which the total content ratio of W and Ti is at least 85 atomic%, and which contains W as the most abundant element and Ti as the next most abundant element among metal (including semi-metal) elements; and a layer B disposed on the layer A and having a face-centered cubic lattice structure, which is composed of nitride or carbonitride containing Al, Cr, and Si, and in which, among metal (including semi-metal) elements, the Al content ratio is at least 50 atomic%, the total content ratio of Al and Cr is at least 85 atomic%, and the Si content ratio is 4-15 atomic%.
Provided is a coated cutting tool having a base material side single layer portion and a laminated portion provided as a hard coating in order from a base material side. The base material side single layer portion is formed of a nitride-based hard coating in which a proportion of Al is highest among metal (including metalloid) elements, a sum of Al and Cr in a content ratio (atomic ratio) is 0.9 or more, and at least B is contained. In the laminated portion, a nitride-based a layer in which a proportion of Ti is highest among metal (including metalloid) elements and at least B is contained, and a nitride-based b layer in which a proportion of Al is highest among metal (including metalloid) elements and at least Cr and B are contained are alternately laminated.
B23B 27/14 - Cutting tools of which the bits or tips are of special material
B23C 5/16 - Milling-cutters characterised by physical features other than shape
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
C23C 14/32 - Vacuum evaporation by explosionVacuum evaporation by evaporation and subsequent ionisation of the vapours
A coated cutting tool which has, on the surface of a bases material, a layer A which is formed of a nitride or carbonitride containing 50% by atom or more of Al and 20% by atom or more of Cr so that the total of Al and Cr is 85% by atom or more, and from 4% by atom to 15% by atom of Si, while having a face-centered cubic lattice structure, and a layer B that is arranged on the layer A. The layer B is formed of a nitride or carbonitride that contains, based on the total amount of metal elements (including semimetals), from 70% by atom to 90% by atom of Ti, from 5% by atom to 20% by atom of Si, and from 1% by atom to 10% by atom of Nb or Cr, while having a face-centered cubic lattice structure.
This head replaceable cutting tool comprises: a shaft-like tool body (1) which is rotated around an axis line (O) in a tool rotation direction (T); and a cutting head (11) provided with a cutting edge (12) and detachably attached to a front end of the tool body (1). The tool body (1) and the cutting head (11) are attached to each other with a body-side abutting surface (5) on a front end surface of the tool body (1) abutting against and closely attached to a head-side abutting surface (17) on a rear end surface of the cutting head (11). A recess (16) and a protrusion (4) insertable into the recess (16) are formed on the rear end surface of the cutting head (11) and the front end surface of the tool body (1), respectively. The recess (16) and the protrusion (4) are formed to become wider in a circumferential direction toward a radially outer peripheral side with respect to the axis line (O).
In this head-exchangeable cutting tool, a cutting head (11) including a cutting edge (12) is detachably attached to a tip portion of a tool body (1) that rotates around an axial line (O) in a tool rotation direction (T). At least a portion of the tip surface of the tool body (1) is a flat body side abutting surface (5) perpendicular to the axial line (O). At least a portion of the rear end surface of the cutting head (11) is a flat head side abutting surface (17) perpendicular to the axial line. The tool body (1) and the cutting head (11) are attached to each other as the body side abutting surface (5) abuts and is in close contact with the head side abutting surface (17). An outer peripheral edge (17a) of the head side abutting surface (17) protrudes radially to the outer peripheral side with respect to the axial line (O) from an outer peripheral edge (5a) of the body side abutting surface (5).
In this drill, a wall face of a chip removal groove includes a first wall face having a concave curve shape and a second wall face having a straight line shape in a cross section orthogonal to an axis of the drill main body, an extension line of a straight line of the second wall face extends in a direction opposite to a drill rotation direction as the straight line of the second wall face goes to an outer periphery side of the drill main body with respect to a radius line connecting an outer peripheral end of the second wall face and the axis with each other, the cutting edge includes a first cutting edge having a concave curve shape and a second cutting edge having a straight line shape which intersects with the first cutting edge at an obtuse angle.
Provided is a coated cutting tool, which includes a hard coating film containing a layer (c) which is a layered coating film made by alternately layering a nitride or carbonitride layer (c1) that contains, with respect to the total amount of metal elements (including metalloid elements), at least 55 atom % aluminum (Al), chromium (Cr) having the second highest content percentage, and at least silicon (Si), and a nitride or carbonitride layer (c2) that contains, with respect to the total amount of metal elements (including metalloid elements), at least 55 atom % aluminum (Al) and titanium (Ti) having the second highest content, each layer having a thickness of 50 nm or less. A peak intensity Ih ascribable to an hcp (010) plane of AlN in the layer (c) and the total peak intensity Is ascribable to other predetermined crystal phases satisfy a relationship of Ih×100/Is≤15.
Metalworking machines and tools; drilling tools for use with
metalworking machines; metalworking machine tools; cutting
tools for machinery; cutting machines for metal working;
drill bits, being parts of metalworking machines; cutting
tools for machinery, namely, end mills; cutting inserts and
cutting tips for use with cutting tools; cemented carbide
cutting tools; cemented carbide tips for use with machine
tools; diamond-pointed metal-cutting tools; sintered diamond
cutting tools; sintered Cubic Boron Nitride cutting tools;
gear cutters, being machine tools; drilling machines for
metalworking; milling machines for metalworking; chucks,
being parts of metal working machines and tools; holders for
cutting tools, being parts of machines; holding devices for
metal working machines and tools; taps, being metalworking
machine tools; threading machines; machine tools for ceramic
processing.
Metalworking machines and tools; drilling tools for use with
metalworking machines; metalworking machine tools; cutting
tools for machinery; cutting machines for metal working;
drill bits, being parts of metalworking machines; cutting
tools for machinery, namely, end mills; cutting inserts and
cutting tips for use with cutting tools; cemented carbide
cutting tools; cemented carbide tips for use with machine
tools; diamond-pointed metal-cutting tools; sintered diamond
cutting tools; sintered Cubic Boron Nitride cutting tools;
gear cutters, being machine tools; drilling machines for
metalworking; milling machines for metalworking; chucks,
being parts of metal working machines and tools; holders for
cutting tools, being parts of machines; holding devices for
metal working machines and tools; taps, being metalworking
machine tools; threading machines; machine tools for ceramic
processing.
This coated cutting tool has a b layer comprising nitride or carbonitride, and a c layer, which is a layered coat comprising, layered alternately with respective film thicknesses of 50 nm or less: a c1 layer of a nitride or a carbonitride, containing 55 atom% or more Al, next, a large Cr content ratio, and furthermore, at least B; and a c2 layer of a nitride or a carbonitride, containing 55 atom% or more Al, and a large amount of Ti. The peak intensity Ih originating from an AlN hcp(010) plane in the c layer, and the sum Is of the peak intensities originating from other predetermined crystal phases, satisfy the relationship Ih × 100/Is ≤ 15.
In this small-diameter drill bit, two cutting blades having main cutting blades, of which a difference between lengths are 0.04 mm or less, are formed on a tip of a double-margin drill bit body having a diameter of 2 mm or less and a margin length/diameter ratio of 3 or more. Two tip flank faces are formed such that a first extension line extending from a linear first intersecting ridgeline between a first tip flank face and a second tip flank face of one of the flank faces to the linear first intersecting ridgeline of the other flank face is located on a side in the drill bit rotation direction with respect to the other linear first intersecting ridgeline. A distance between the first extension line and the linear first intersecting ridgeline is in a range of 0.04 mm-0.08 mm.
This coated cutting tool has a hard coat on the surface of a base material. The hard coat is a nitride of Al, Cr, and Si, comprising 50 atom% or more Al, 30 atom% or more Cr, and between 1 atom% and 5 atom% inclusive Si. The hard coat contains 0.02 atom% Ar. The atomic ratio A thereof and the atomic ratio B of nitrogen satisfy the relationship 1.02 ≤ B/A ≤ 1.10. The diffraction peak originating from the (111) plane of a face-centered cubic lattice structure exhibits the maximum intensity. In a cross-sectional observation, the hard coat has, per 100 μm2, less than one droplet having an equivalent circle diameter of 3 μm or larger. For the surface of the hard coat, the value of the arithmetic mean peak curvature Spc (1/mm), as defined in ISO 25178, is 5,000 or lower.
The present invention discloses a coated cutting tool having a hard coating film on a surface of the tool. The hard coating film is a nitride, the content ratio of titanium (Ti) with respect to a total amount of metal elements (including semimetal elements) is in a range of 70 at % to 95 at %, the content ratio of silicon (Si) with respect to the total amount of metal elements (including semimetal elements) is in a range of 5 at % to 30 at %, and the content ratio of argon (Ar) with respect to the total amount of metal elements (including semimetal elements) and non-metal elements is 0.1 at % or less. The hard coating film has a NaCl type crystal structure and has an average crystal grain size in a range of 5 nm to 30 nm.
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
This coated cutting tool has a hard film including: a b layer composed of a nitride or a carbonitride; a c layer that is a laminated film in which c1 layers, which are made of a nitride or a carbonitride that contains Al in an amount of 55-75 at%, also has a high Cr content ratio, and furthermore contains at least Si, and c2 layers, which are made of a nitride or a carbonitride that contains Al in an amount of 55-75 at% and also contains a high amount of Ti, are alternatingly laminated such that each has a film thickness of 50 nm or less; and a d layer made of a nitride or a carbonitride that contains Al in an amount of 55-75 at% and also has a high content ratio, the Ti content ratio being 20 at% or higher, with respect to the total volume of metal elements (including metalloid elements). The peak intensity Ih originating from an hcp (010) plane of AlN in the c layer, and the sum Is of the peak intensities originating from a plurality of prescribed crystal phases, satisfy the relationship Ih × 100/Is ≤ 15.
This coated cutting tool has a hard coating including: a b-layer comprising a nitride or a carbonitride; a c-layer which is a layered coating comprising, layered alternately with a film thickness of 50 nm or less each, a c1-layer of a nitride or a carbonitride containing Al at between 55% by atom and 75% by atom inclusive, Cr at a large content ratio, and further, at least Si, and a c2-layer of a nitride or a carbonitride containing Al at between 55% by atom and 75% by atom inclusive, and containing Ti in a large amount; and a d-layer that is a nitride or a carbonitride containing, relative to the total amount of metal (including metalloid) elements, Al at between 55% by atom and 75% by atom inclusive, Cr at a large content ratio, Cr at a content ratio of 20% by atom or greater, and further, at least Si. The peak intensity Ih attributed to the hcp (010) plane of AlN in the c-layer, and the total peak intensity Is attributed to a plurality of predetermined crystal phases, fulfill the relationship Ih×100/Is ≤ 15.
Metalworking machines and tools in the nature of metal working machine tools for the cutting, forming, shaping and finishing of metallic materials; drilling tools for use with metalworking machines; metalworking machine tools; cutting tools for machinery, namely, diamond-pointed metal cutting tools, thread milling cutters, broaches being machine tools, chasers, milling cutters, reamers being machine tools; cutting machines for metal working; drill bits, being parts of metalworking machines; cutting tools for machinery, namely, end mills; cutting inserts and cutting tips for use with cutting tools being parts of metal cutting machines; cemented carbide cutting tools; cemented carbide tips for use with machine tools; diamond tools, namely, diamond coated cutting tools; sintered diamond cutting tools; sintered Cubic Boron Nitride cutting tools; gear cutters, being machine tools; drilling machines for metalworking; milling machines for metalworking; chucks, being parts of metal working machines and tools; holders for cutting tools, being parts of machines; holding devices for metal working machines and tools; taps, being metalworking machine tools; threading machines; machine tools for ceramic processing
Metalworking machines and tools in the nature of metal working machine tools for the cutting, forming, shaping and finishing of metallic materials; drilling tools for use with metalworking machines; metalworking machine tools; cutting tools for machinery, namely, diamond-pointed metal cutting tools, thread milling cutters, broaches being machine tools, chasers, milling cutters, reamers being machine tools; cutting machines for metal working; drill bits, being parts of metalworking machines; cutting tools for machinery, namely, end mills; cutting inserts and cutting tips for use with cutting tools being parts of metal cutting machines; cemented carbide cutting tools; cemented carbide tips for use with machine tools; diamond tools, namely, diamond coated cutting tools; sintered diamond cutting tools; sintered Cubic Boron Nitride cutting tools; gear cutters, being machine tools; drilling machines for metalworking; milling machines for metalworking; chucks, being parts of metal working machines and tools; holders for cutting tools, being parts of machines; holding devices for metal working machines and tools; taps, being metalworking machine tools; threading machines; machine tools for ceramic processing
This endmill is provided with: an endmill body which is shaft-shaped and is rotatable about an axial line and which is provided with, at a leading end thereof, a plurality of gashes which extend radially and are arranged along the circumferential direction; and a plurality of cutting edges which are provided to the leading-end side ridges of wall surfaces, of the gashes, directed in the endmill rotational direction. The rotation trajectory of the cutting edges is a circular-arc shape projecting toward the leading-end side, in which the circular-arc center is located on the axial line in a side view. The curvature radius of the rotation trajectory of the cutting edges is larger than 1/2 of the outer diameter of the endmill body. The tips of the cutting edges are bent so as to project toward the rotational direction, in a planar view. The size of the maximum projection of the tips of the cutting edges toward the rotational direction with respect to a virtual line connecting both radial ends of the tips is 3-4% of the outer diameter of the endmill body. The cutting edges include master and slave edges.
Provided is a coated cutting tool that has a nitride hard coating that contains Ti at 70 at % to 95 at % and Si at 5 at % to 30 at % with respect to the total amount of metallic elements, and Ar at 0.05 at % to 0.20 at % with respect to the total amount of metallic and non-metallic elements, has a NaCl-type crystalline structure, exhibits maximum diffraction peak intensity in the (200) plane, and has an average grain size of 5 nm to 30 nm. When 100 at % is defined as the total of content rates of the metallic elements, nitrogen, oxygen, and carbon in a composition at intervals of 20 nm from a depth of 20 nm to 200 nm from a surface of the hard coating, the content rate of nitrogen is 50.0 at % or more.
A hard coating film of a coated cutting tool contains Al within a range of 70 at % to 80 at % and Ti within a range of 20 at % to 30 at % with respect to a total amount of metallic (including metalloid) elements, and contains Ar of 0.50 at % or less with respect to a total amount of the metallic elements (including metalloid) and nonmetallic elements. The film has a diffraction peak due to each of a TiN (111) plane, a TiN (200) plane, and a TiN (220) plane of an fcc structure and an AlN (100) plane and an AlN (002) plane of a hcp structure, in which the diffraction peak of the TiN (200) plane indicates a maximum intensity and an intensity of the diffraction peak due to the TiN (111) plane is next thereafter. The average crystal grain size is within a range of 5 nm to 50 nm.
A cutting insert includes a rake face, a seating face facing an opposite side to the rake face and seated on an insert mounting seat, and a flank face extending around the rake face and the seating face, in which two cutting edges each having an arcuate cutting edge portion extending in an arc shape and a linear cutting edge portion which is in contact with the arcuate cutting edge portion are formed on an intersecting ridgeline portion between the rake face and the flank face, a groove portion having a wall surface coming into contact with a projection portion protruding from a bottom surface of the insert mounting seat is formed on the seating face, and the groove portion has a narrow width portion in which a groove width decreases from one end side toward the other end side in a direction in which the groove portion extends.
A ball end mill according to the present invention includes an end mill body which is formed in a shaft shape, a plurality of convex arcuate end cutting edges which are disposed on a tip portion of the end mill body at intervals around an axis and form a hemispherical shape such that a rotational locus around the axis has a center on the axis, and a plurality of gashes which are respectively disposed to be adjacent to the plurality of end cutting edges in an end mill rotation direction around the axis. The plurality of end cutting edges includes a first end cutting edge longest among the plurality of end cutting edges, a second end cutting edge which is adjacent to the first end cutting edge in the end mill rotation direction and a third end cutting edge which is adjacent to the second end cutting edge in the end mill rotation direction.
A cutting insert includes a polygonal plate-shaped insert main body having two polygonal surfaces, a side surface having a flank, and a cutting edge to be formed in an intersection ridgeline portion between a rake face and the flank. The insert main body has a rotationally symmetrical shape with respect to an insert center line, and has a front-rear reversely symmetrical shape with respect to the polygonal surface. The cutting edge includes a corner cutting edge, a major cutting edge extending from an one end of the corner cutting edge, and a wiper cutting edge extending from an one end of the major cutting edge in a direction intersecting the major cutting edge at an obtuse angle. A first region is disposed where a clearance angle of the flank gradually decreases to a negative angle after continuously passing through 0° from a positive angle.
The present invention provides an end mill including: a shaft-shaped end mill main body; a chip discharge groove extending from a leading end to a trailing end in an axial direction of the end mill main body; a bottom blade which is provided at a leading end portion in the axial direction of the end mill main body and has a spherical shape in which a rotation locus around the axis has a center on the axis; and an outer peripheral blade which is provided along the chip discharge groove, and in which a rotation locus around the axis is convex outward. A curvature radius of the rotation locus of the outer peripheral blade is larger than a curvature radius of the rotation locus of the bottom blade. A twist angle of the outer peripheral blade is 20° or more.
A cutting insert includes a main surface formed in a substantially parallelogram shape and having a pair of acute angle corner portions and a pair of obtuse angle corner portions, a seating surface that faces a side opposite to the main surface, a side surface that connects the main surface and the seating surface to each other, a corner cutting edge disposed in the acute angle corner portion, and a main cutting edge and a subsidiary cutting edge which are respectively disposed in a pair of side ridge portions of the main surface located each other across the acute angle corner portion. A mounting hole into which the fixing member is inserted penetrates the main surface and the seating surface. The main cutting edge is inclined at an inclination angle equal to or larger than 8° with reference to a plane perpendicular to an axial direction of the mounting hole.
A cutting insert includes a rake face configuring one of polygonal surfaces, a seating surface configuring the other one of the polygonal surfaces, and a side surface connecting the rake face and the seating surface to each other. The cutting insert has a cutting edge portion including a main cutting edge located in a side portion of the rake face, a subsidiary cutting edge connected to the main cutting edge, and a corner cutting edge connected to the subsidiary cutting edge and located in a corner portion of the rake face. The side surface includes a flank face and a connection surface which are adjacent to each other in a thickness direction via a boundary line. The connection surface is located on the seating surface side, and is located outside than an extension line of the flank face.
A hard coating comprising a lower layer formed by an fcc-based titanium aluminum nitride coating, and an upper layer formed by an aluminum nitride coating having an hcp crystal system, the upper layer having a columnar crystal structure, the columnar crystals having an average transverse cross section diameter of 0.05-0.6 μm, and a ratio of an X-ray diffraction peak value Ia(002) of (002) planes to an X-ray diffraction peak value Ia(100) of (100) planes in the upper layer meeting the relation of Ia(002)/Ia(100)≥6.
B23C 5/16 - Milling-cutters characterised by physical features other than shape
C23C 16/455 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into the reaction chamber or for modifying gas flows in the reaction chamber
A cutting insert includes a cutting edge portion, and the cutting edge portion includes a bottom cutting edge forming an arc shape that protrudes toward a front end side in a central axis direction, an outer peripheral cutting edge forming an arc shape that protrudes toward an outside in a radial direction, and a cutting edge of corner that connects an outer end of the bottom cutting edge in the radial direction and a front end of the outer peripheral cutting edge in the central axis direction and forms an arc shape that protrudes toward a front end outer circumferential side. The bottom cutting edge and the outer peripheral cutting edge are formed so as to form a linearly symmetric shape together with respect to an imaginary straight line that passes through an arc central point of the cutting edge of corner and intersects the central axis.
In order to form an internal thread having a concave surface having the same shape as that obtained by using a thread cutting blade having a convex surface without using such a thread cutting blade in formation of an internal thread hole in a mold component or the like using a thread milling cutter, a trimming blade has a leading-side flank surface extending from an axial tip side of a tool body to the rear side, a top surface formed continuously to the leading-side flank surface in the axial direction, and a trailing-side flank surface formed continuously to the top surface in the axial direction. Two or more chamfered surfaces are formed between the leading-side flank surface and the top surface and between the top surface and the trailing-side flank surface in the trimming blade.
B23G 1/34 - Thread cuttingAutomatic machines specially designed therefor by milling with a cutting bit moving in a closed path arranged eccentrically with respect to the axis of the rotating workpiece
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metalworking machines and tools; metalworking machine tools;
cutting tools for machinery; cutting machines for
metalworking; drill bits, being parts of metalworking
machines; drilling tools for use with metalworking machines;
cutting tools for machinery, namely, end mills; cutting
inserts and cutting tips for use with cutting tools;
cemented carbide cutting tools; cemented carbide tips for
use with machine tools; diamond-pointed metal- cutting
tools; sintered diamond cutting tools; sintered cBN (cubic
boron nitride) cutting tools; gear cutters, being machine
tools; drilling machines for metalworking; milling machines
for metalworking; chucks, being parts of metalworking
machines and tools; holders for cutting tools, being parts
of machines; holding devices for metalworking machines and
tools; taps, being metalworking machine tools; threading
machines; machine tools for ceramic processing. Metal treating; surface coating and surface finishing of
machines and tools; shaping, polishing, grinding, cutting
and surface coating of cutting tools made of metallic
materials, ceramics and materials consisting of these
materials; millworking; application of coating to ceramic
surfaces and surfaces of machines and tools using physical
or chemical vapor deposition techniques; coating of metal
surfaces using physical vapor deposition or chemical vapor
deposition processes; ceramic processing; recycling of used
cutting inserts and cutting tips for use with cutting tools;
surface finishing of metal articles; application of
protective surface coatings to metal. Engineering services relating to metalworking machines and
tools; technical advice relating to operation of metal
working machines and tools; technological advisory service
relating to metal working machines and tools; technological
consultancy relating to metal working machines and tools.
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metalworking machines and tools; metalworking machine tools;
cutting tools for machinery; cutting machines for
metalworking; drill bits, being parts of metalworking
machines; drilling tools for use with metalworking machines;
cutting tools for machinery, namely, end mills; cutting
inserts and cutting tips for use with cutting tools;
cemented carbide cutting tools; cemented carbide tips for
use with machine tools; diamond-pointed metal-cutting tools;
sintered diamond cutting tools; sintered cBN (cubic boron
nitride) cutting tools; gear cutters, being machine tools;
drilling machines for metalworking; milling machines for
metalworking; chucks, being parts of metalworking machines
and tools; holders for cutting tools, being parts of
machines; holding devices for metalworking machines and
tools; taps, being metalworking machine tools; threading
machines; machine tools for ceramic processing. Metal treating; surface coating and surface finishing of
machines and tools; shaping, polishing, grinding, cutting
and surface coating of cutting tools made of metallic
materials, ceramics and materials consisting of these
materials; millworking; application of coating to ceramic
surfaces and surfaces of machines and tools using physical
or chemical vapor deposition techniques; coating of metal
surfaces using physical vapor deposition or chemical vapor
deposition processes; ceramic processing; recycling of used
cutting inserts and cutting tips for use with cutting tools;
surface finishing of metal articles; application of
protective surface coatings to metal. Engineering services relating to metalworking machines and
tools; technical advice relating to operation of metal
working machines and tools; technological advisory service
relating to metal working machines and tools; technological
consultancy relating to metal working machines and tools.
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
Metalworking machines and tools; metalworking machine tools;
cutting tools for machinery; cutting machines for metal
working; drill bits, being parts of metalworking machines;
drilling tools for use with metalworking machines; cutting
tools for machinery, namely, end mills; cutting inserts and
cutting tips for use with cutting tools; cemented carbide
cutting tools; cemented carbide tips for use with machine
tools; diamond-pointed metal- cutting tools; sintered
diamond cutting tools; sintered cBN (cubic boron nitride)
cutting tools; gear cutters, being machine tools; drilling
machines for metalworking; milling machines for
metalworking; chucks, being parts of metal working machines
and tools; holders for cutting tools, being parts of
machines; holding devices for metal working machines and
tools; taps, being metalworking machine tools; threading
machines; machine tools for ceramic processing. Metal treating; surface coating and surface finishing of
machines and tools; shaping, polishing, grinding, cutting
and surface coating of cutting tools made of metallic
materials, ceramics and materials consisting of these
materials; millworking; application of coating of ceramic
surfaces and surfaces of machines and tools using physical
or chemical vapor deposition techniques; coating of metal
surfaces using physical vapor deposition or chemical vapor
deposition processes; ceramic processing; recycling of used
cutting inserts and cutting tips for use with cutting tools;
surface finishing of metal articles; application of
protective surface coatings to metal. Engineering services relating to metalworking machines and
tools; technical advice relating to operation of metal
working machines and tools; technological advisory service
relating to metal working machines and tools; technological
consultancy relating to metal working machines and tools.
