A sharp edged knife stop can secure the position of knife blades in a cutting or chipping system and prevent the separation of knife blades. The sharp edged knife stops can also assist in the cutting or chipping and lower the amount of debris build up that would occur with the use of traditional knife stops. The sharp edged knife stop has the same inclination angle as the knife blades and the same difference in knife edge height as the knife blades above that of a retaining ring height.
A chipper knife that is adapted to be mounted in chippers which have a rotatable tool, in the form of a disc, drum or frustoconical member, on which a plurality of such chipper knives are mounted has at least a first side having a raw, unworked surface or working stripes extending in the longitudinal direction of the chipper knife, substantially parallel to the cutting edge which also has a cutting edge portion extending inwardly from the cutting edge and terminating in a shoulder extending parallel to the cutting edge to provide a clearance step on the knife behind the shoulder with respect to the adjacent knife surface, which edge portion also has working stripes formed therein transverse that cutting edge portion and at an angle to the cutting edge.
A chipper knife adapted to be mounted in chippers which have a rotatable tool, in the form of a disc, drum or frustoconical member, on which a plurality of chipper knives are mounted has at least one cutting edge which is defined between two edge-forming surface portions of the knife at an acute angle to each other. At least one of the two edge-forming surface portions extends from the cutting edge inwardly to a shoulder extending parallel to and facing away from the cutting edge and defining a step surface on the knife behind the shoulder with respect to the rest of the adjacent knife surface and chipper knife.
A knife includes first and second edges, a ridge, a concave surface, and a planar surface. The edges are defined by intersections of outer edge forming surfaces on an outer side of the knife and inner edge forming surfaces on an inner side of the knife. The ridge is on the inner side and the crest of the ridge is parallel to the first and second edges. The concave surface is between an inner edge forming surface and the ridge, and the planar surface is adjacent to the concave surface and between that first inner edge forming surface and the concave surface. A reference plane intersects the first and second edges, and a distance between any point on the concave surface and the reference plane is not less than a distance between any point on the planar surface and the reference plane.
B27C 1/00 - Machines pour l'obtention de surfaces planes, p. ex. à l'aide d'outils rotatifsÉquipement de ces machines
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
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
A clamping assembly to hold a woodworking knife in place in a woodworking machine. The clamping assembly comprises a clamping component comprising a body and an actuator. The body has three discrete contact positions distributed thereon: 1) a fulcrum located generally at one end, 2) a knife abutting portion located generally at the other end, and 3) a bearing surface located elsewhere. The actuator is for applying a clamping force to the body along a clamping axis located intermediate of the knife abutting portion and the fulcrum. The fulcrum is a surface having a normal that is at an angle to the clamping axis. The bearing surface is a surface wherein a line normal to the bearing surface intersects the line normal to the fulcrum at a position outside of the clamping component at a location farther askew of the clamping axis than the fulcrum.
The invention concerns a bark- cutting device to be fitted to a barking machine comprising a rotatable, annular rotor with many barking arms (2). The bark-cutting device fits the area of a barking arm's free end adjacent a barking edge's (6,6') upstream end, in the log feeding direction, and comprises a bark-cutting edge (8), with a longitudinal extent substantially transverse the log feeding direction for pre-cutting bark before debarking occurs. The bark-cutting device is an accessory element (9), comprising an internally threaded or unthreaded hole (10) or a threaded shank and a wing (11), extending laterally from the shank or hole and provided with the bark- cutting edge (8), so the device is adapted for use as a nut, washer or bolt and is connected to the barking tool when connecting the barking tool (4) to the barking arm (2). The invention also concerns a combination barking tool and bark- cutting device, and a method of fitting a bark- cutting device to a barking machine.
A sharp edged knife stop can secure the position of knife blades in a cutting or chipping system and prevent the separation of knife blades. The sharp edged knife stops can also assist in the cutting or chipping and lower the amount of debris build up that would occur with the use of traditional knife stops. The sharp edged knife stop has the same inclination angle as the knife blades and the same difference in knife edge height as the knife blades above that of a retaining ring height.
B27G 13/00 - Ensembles de porte-outils et d'outilsAutres outils à mouvement rotatif spécialement adaptés pour travailler du bois ou des matériaux similaires
A sharp edged knife stop can secure the position of knife blades in a cutting or chipping system and prevent the separation of knife blades. The sharp edged knife stops can also assist in the cutting or chipping and lower the amount of debris build up that would occur with the use of traditional knife stops. The sharp edged knife stop has the same inclination angle as the knife blades and the same difference in knife edge height as the knife blades above that of a retaining ring height.
B27G 13/04 - Montage des outils coupants par des moyens de serrage mécaniques
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 13/10 - Montage des outils coupants, p. ex. par colliers de serrage
B27L 11/00 - Fabrication de copeaux, particules, poudre, ou produits similaires, à partir de boisOutils à cet effet
B27L 11/02 - Fabrication de copeaux, particules, poudre, ou produits similaires, à partir de boisOutils à cet effet de copeaux de bois ou de particules similaires
9.
A CHIPPER KNIFE, ASSEMBLY AND MOUNTING METHOD THEREOF
The invention concerns a chipper knife, mountable onto a rotatable cutting head (1) of a chipper machine for cutting wood pieces into chips. The knife (2) comprises a mirror symmetrical cross-section. A chip guiding surface (14, 14') is formed from an edge forming surface (10, 10') at each cutting edge to the deflector ridge's (13) crest and comprises a concavely curved chip deflecting surface (16, 16'). Each chip guiding surface (14, 14') is formed of contiguous and tangentially adjoining planar and concave surfaces in a direction from an area immediately adjacent the edge forming surface (10, 10'; 21, 21') to the deflector ridge's crest without intermediate convexly curved portions or indentations making discontinuities or abrupt changes in the direction, and comprises a first planar contact surface (15, 15') bearing against an inner clamping member (4) and formed on the chip guiding surface adjacent the deflector ridge's crest. The invention also concerns a chipper knife assembly and a method for mounting a chipper knife in a rotatable cutting head.
The invention relates to a chipper knife of thetype that is adapted to be mounted in chippers which have a rotatable tool, in the form of a disc, drum or frustoconical member, on which are mounted a plurality of such chipper knives to provide, during rotation of the tool and simultaneous feeding of pieces of wood to the same, material-cutting working or disintegrating of the pieces of wood into chips by means of at least one cutting edge (1, 1 '). At least a first side of the chipper knife has a raw, unworked surface or working stripes in the longitudinal direction of the chipper knife, that is substantially parallel to the cutting edge. This first side also has a thickened cutting edge portion (5, 5') in the area next to the cutting edge, which edge portion has working stripes in the transverse direction of the chipper knife, at an angle to the cutting edge. The invention also relates to a method of manufacturing such a chipper knife.
The invention relates to a chipper knife of the type that is adapted to be mounted in chippers which have a rotatable tool, in the form of a disc, drum or frustoconical member, on which are mounted a plurality of such chipper knives to provide, during rotation of the tool and simultaneous feeding of pieces of wood to the same, material-cutting working or disintegrating of the pieces of wood into chips. The chipper knife comprises at least one cutting edge (7) which is defined between two edge-forming surfaces (9, 10) at an acute angle to each other. At least one of the two edgeforming surfaces is formed with a thickened cutting edge portion (12) in the area next to the cutting edge, said thickened cutting edge portion having a shoulder edge (13) toward the rest of the edge-forming surface and forming an angle to, or having a different centre of curvature to, the rest of the edgeforming surface. The invention also relates to a method of manufacturing such a chipper knife.
The barking device includes a barking arm and a barking tool which is mounted in a tool seat of the barking arm. The barking tool has a convex mounting surface, while the seat surface of the barking arm is concave. The barking tool is movably mounted in the tool seat and displaceable by rotating displacement. It is connected to the tool seat by a screw and a sleeve-like nut. The head of one of the screw or nut is designed to prevent displacement and rotation of the barking tool.
A clamping assembly to hold a woodworking knife in place in a woodworking machine. The clamping assembly comprises a clamping component comprising a body and an actuator. The body has three discrete contact positions distributed thereon: 1) a fulcrum located generally at one end, 2) a knife abutting portion located generally at the other end, and 3) a bearing surface located elsewhere. The actuator is for applying a clamping force to the body along a clamping axis located intermediate of the knife abutting portion and the fulcrum. The fulcrum is a surface having a normal that is at an angle to the clamping axis. The bearing surface is a surface wherein a line normal to the bearing surface intersects the line normal to the fulcrum at a position outside of the clamping component at a location farther askew of the clamping axis than the fulcrum.
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