Abstract: A milling cutter using a wedge to secure an insert within a pocket of the milling cutter wherein the wedge is tapered in both the axial direction and the radial direction. A screw urges the wedge within a tapered cavity to press the insert within the pocket along the axial wedge angle while rotation of the cutter creates centrifugal forces urging the wedge radially outward, thereby forcing the wedge against the radial wedge surface to further compress the insert within the pocket. The insert pocket may be extended to radially encompass the insert, thereby providing additional support against centrifugal forces for the insert.

Abstract: In a profiled inserted-blade cutter, with blades (13) which can be re-sharpened without altering the profile and trajectory, each blade (13) is secured to a blade holder (14) having a base with a T-shape cross section, one arm (16) of the transverse section of which engages in a first longitudinal groove (4) in the basic unit (2). The other arm (17) engages in a second longitudinal groove (5) also in the basic unit (2) and open towards the first groove (4). The flanks of the first and second longitudinal grooves (4, 5) at a greater distance from the central longitudinal axis of the basic unit (2) lie in planes which are mutually parallel and parallel to the longitudinal axis of the basic unit and each form a positioning surface (6, 7) for one or other arm (16, 17) of the transverse section. On the blade holder (14) there is a clamping surface (15) which encloses a radially outwardly opening angle with the frontal surface (13') of the blade (13) and an acute angle with the adjacent positioning surface (7).

Abstract: A indexable end mill of the present invention comprises a helical flute formed in the outer periphery of a shank as inclined at a required angle with respect to the axis of the shank, a plurality of indexable inserts attached to places in the helical flute rearwardly with respect to the axis of the rotated shank as spaced at required intervals along the helical flute, and recesses defined in the outer periphery of the shank as interposed between the indexable inserts.

Abstract: A cutting mill kit includes a basic body formed with a plurality of peripheral recesses which receive respective cassettes and cutting inserts and an annular support element which is provided with at least one formation receiving a respective gib. The gib provides an axial support for the cassette and has a width lesser than a width of the cassette.

Abstract: A disposable tip clamp mechanism capable of simplifying the mounting operation of a disposable cutting tip to produce an improved effect for preventing the dislocation of the tip is described. A screw member 36 having a screw hole 36a in the head 36c thereof is connected with the mounting screw hole 33 of a tip mounting seat 32, with the head portion 36c projecting from the tip mounting seat 32 and a disposable tip 37 is seated on the tip mounting seat 32 such that the engaging portion 37f thereof engages the head portion 36c of the screw hole-containing screw member 36.

Abstract: A milling cutter is provided with a base body that can be driven in a rotating manner around its longitudinal axis. Support bodies are distributed over the surface of the base body and are supported from centrifugal forces by a base body stopper and are positioned in tension against the base body stopper. The base body has an end face with a central area and a peripheral area around the central area, which central area is recessed with respect to the peripheral area. The central area and peripheral area together forming a step which acts as the base body stopper. The support bodies comprise a counter-step which can interlock with the base body, and a mounting plate is positioned at the end face to support the support bodies.

Abstract: A stump grinding apparatus having a tooth which is automatically retained with respect to, and appropriately gauged from a pocket. The tooth includes an elongated shank portion having front and rear ends and a head portion integrally extending from the front end of the shank portion. In a preferred embodiment of the present invention, a pair of longitudinally spaced holes are formed through the shank portion adjacent its rear end. A pin may be inserted through one of the two holes formed through the shank portion, with the chosen hole being dependent upon whether the shape of the pocket being used is either entirely round or partially round with a straight rear edge. When the tooth is securely clamped to the stump grinding wheel via the pocket, the pin is positioned in abutting relation to the rear end of the pocket, thereby preventing the tooth from moving axially with respect to the pocket.

Abstract: A cutter head in a chipper that includes a rotatable hub member, and multiple knife assemblies distributed circumferentially about the rotation axis of the hub member. Each knife assembly includes a base member or holder which has multiple knives detachably clamped thereon. A base member is secured to the hub member through a groove provided in one of the members and a flange which is part of the outer member, with the flange seating within the groove.

Abstract: A milling cutter tool includes a rotary body having recesses spaced along its outer body, each recess receiving an insert-carrying cartridge and a wedge for retaining the cartridge. Leading and trailing surfaces of each recess converge radially inwardly, whereas leading and trailing surfaces of each wedge converge radially outwardly. An actuator pushes each wedge radially outwardly into clamping relationship with the cartridge.

Abstract: A cutting tool is disclosed having an annular array of V-shaped pockets formed in the body thereof for receiving complimentary shaped tool cartridges. Threaded fasteners are provided to selectively retain one of the cartridges in each of the pockets.

Abstract: A stump cutting tool assembly for a stump cutting apparatus having a rotatable cutting wheel includes at least one tool holder removably secured to the cutting wheel, at least one cutting tooth mounted circumferentially and removably to the at least tool holder, the at least one tool holder including a wheel portion extending circumferentially along the cutting wheel and a tool portion extending axially at an angle to a plane of the wheel portion, the tool portion having an aperture extending circumferentially therethrough and the at least one cutting tooth including a shank and an insert attached to the shank.

Abstract: A rotary chipping head with multiple knife structures distributed about its periphery. Each knife structure includes an end-located chipping knife with a cutting edge movable in a plane disposed perpendicular to the axis of rotation of the chipping head. End-located facing knives are interspersed with the knife structures for producing a smooth face in the work being processed. Anvils preceding the facing knives produce compression in the work being processed. Detachable facing elements mount the facing knives and the anvils.

Abstract: A valve seat tool assembly has a body adapted for selective rotation about a longitudinal axis. The body includes recesses that receive removable cartridges therein. Preferably, the cartridges have a cylindrical shank received in the recesses and carry cutting inserts on each cartridge. The cartridge and cutting inserts may be mounted in any of three desired manners, all of which advantageously permit axial adjustment of the cartridge relative to the body.

Abstract: A milling cutter tool for chip-breaking machining comprises a rotatable milling cutter body (1) and a plurality of cutting insert-carrying cassettes (4) which are fastened in the cutter body by screws (6,7). The screw holes of the cassette are somewhat elongate in order to enable an axial fine-adjustment of the cutting edges. This fine-adjustment is accomplished by turning an eccenter tap (8), for instance by sticking a hexagonal key through a hole in the cassette, which hole leads to the head of the eccenter tap.

Abstract: A cutterhead for an industrial woodworking machine comprising a cutterhead body having a cylindrical outer surface with at least one insert-receiving groove extending into the body from the outer surface; at least one cutting insert secured in the groove, the insert being comprised of an insert body, a blade attachment gib, and at least one detachable blade, each blade being secured adjacent the insert body by the blade attachment gib. The upper end of the gib preferably projects above the cutterhead body and is adapted to turn chips from the blades, which project above the attachment gib. Fasteners secure the blades between the body and the attachment gib, and the insert in the groove.

Abstract: A finishing blade having a radiused cutting edge for a chipper to produce a smooth finish on a surface of a log. The blades are mounted on the chipper such that a cut produced by one blade will be overlapped by a succeeding blade. The cutting edge of the finishing blade is radius ground to a slight curvature, The curvature of the cutting edge assures that the plane of cut produced by a first blade will be intersected by a succeeding blade.

Abstract: A milling cutter body of basically cylindrical shape has a plurality of grooves of a circular cross-section each of which intersects the envelope surface of the cutter body. These grooves receive insert-carrying cartridges of a corresponding circular cross-section. Each cartridge is adjustably rotatable about an axis of its respective groove and is also axially adjustable along such axis. The groove axes are not parallel to the axis of rotation of the cutter body but are inclined to it. A precise positioning of the parallel land angle of the cutting edges is obtained by turning the cartridge about the groove axis and/or axially adjusting the cart ridge along that axis.

Abstract: To provide a reliable, yet resilient, seat for a cutter blade or knife (13) in a rotary milling body (11), the milling body is formed with a bore (21) which intersects the inner wall (19) of a recess (12) in the circumference of the milling body (11). A roll pin is inserted in the bore, retained therein, but projecting over the plane of the wall surface (19). The knife (13) is formed with a longitudinal groove (27), having opposite flat angled side walls (60), which fit around the projecting surface of the roll pin. A holding element (15), fitted into the recess, bears against knife and resiliently clamps it against the roll pin. Preferably, the holding element (15) and the knife (13) are formed with an interengaging projection (41) and recess (42) arrangement.

Abstract: A log-slabbing chipper having a chipper head that includes a power-driven rotor head and multiple double-edged knives distributed about the rotor head. A detachable wear plate for each knife extends in covering relation over a cutting edge in the knife that occupies an inoperative position. The wear plate establishes a proper depth of cut for the cutting edge of a knife that follows the wear plate.

Abstract: Apparatus for multi-channel transverse epidural spinal cord stimulation uses a multi-channel pulse generator driving a plurality of electrodes mounted near the distal end of a lead. These electrodes are mounted in one or more lines, generally perpendicular to the lead axis, and have a planar surface along one surface of the lead. The lead is implanted adjacent to spinal cord dura mater with the electrodes transverse and facing the spinal cord. Pulses generated by the pulse generator for each channel are normally simultaneous, of equal amplitude and of equal duration, however the pulse generator is arranged such that pulses for each channel can selectably alternate in time, can selectably be of unequal amplitude, or both. The changes in pulse timing and magnitude permit shifting the electrical stimulation field and the resulting paresthesia pattern after installation to accommodate improper lead placement or postoperative dislocation and to minimize unwanted motor responses.

Abstract: The invention relates to a cutter block and a knife for chippers for removing particles of wood, which are used for producing particle board and the like. The knife is embodied as a disposable discontinuous or multiple edge knife or as a solid blade knife. The knife has retention and guiding recesses engaged form-fittingly by positioning pins of a support plate. Further, the knife is in compressive contact with a side wall face, trailing in the direction of rotation of the cutter block of the recess in the surface region of the block body.

Abstract: A milling cutter includes a rotary body and a plurality of recesses spaced around its outer periphery for receiving insert-carrying cartridges. Each cartridge is wedge-shaped and is retained in place by a clamping wedge which is fastened in the respective recess by a clamp screw. Each cartridge has serrations on its rear surface which engage corresponding serrations on the rearward wall of the recess. A locating pin extends between a wall of the recess and a surface of the cartridge. The cartridge carries a spring which is compressed by the clamping wedge such that the spring biases the cartridge against the rearward wall of the recess.

Abstract: A cutting blade for working logs to timber form while simultaneously removing wood chips which includes a pair of adjacent recesses formed in the periphery of the blade. A knife is bolted in the cutting blade in a first recess and a wear insert is separately bolted to the cutting blade in the adjacent recess. The bolts are countersunk so as not to extend outwardly from the knife or wear insert.

Abstract: A chipping cutter head including a double-edged knife and support structure mounting the knife in a pocket provided at the periphery of a cutter head body. The support structure includes a block member fastened by screws to the floor of the pocket. Adjustment structure is provided for adjusting the position of the block member, with this being effective to shift the position of the cutting edge of a knife supported on the block member. A replaceable insert member with a wear surface is positioned by a pin on the block member, and this insert member supports the knife and the knife is locked from shifting axially on the insert member.

Abstract: A blade mounting for a chipper blade of a wood-chipping machine, the chipper blade having a back and a fore-part, the blade mounting including: a disk coverplate having an inner slope which bears against the back of the chipper blade; a blade holder having at least two grooves which are oriented perpendicular to a longitudinal axis of the blade holder and parallel to a plane of the chipper blade, the blade holder bearing against the fore-part of the chipper blade; adjusting screws located in the grooves in the blade holder; and dogs for underpinning a bottom edge of the chipper blade at at least two locations, the dogs being adjusted by the adjusting screws.

Abstract: An improved bracket clamps a cutting tool to the wheel of a stump cutting apparatus and includes a channel defined between a leading bracket half and a trailing bracket half. The trailing bracket half includes an extension extending outwardly beyond an outermost edge of the leading bracket half. The channel encloses at least two-thirds of the cutting tool, and the extension has a planar surface in engagement with the surface of the cutting tool proximate to the cutting tip when the other end of the cutting tool is aligned with the opposing end of the channel. The extension provides rearward support for the cutting tip.

Abstract: A knife assembly for a chipping canter has a knife holder which is mounted on a rotatable chipper head. Along an upper edge of the knife holder is a receiving and holding portion in which is removably mounted a readily replaceable chipper knife.

Abstract: A cutting tool is disclosed which has a tool body, a cutting insert and an insert-holding member. The tool body has a recess formed therein, and the cutting insert is received in the recess. The insert-holding member is attached to releasably secure the cutting insert to the recess. The insert-holding member includes a surface layer having a thickness of 0.1 to 1.0 mm and an interior portion. The surface layer is harder than the interior portion and has a hardness of from H.sub.R C 40 to 60.

Abstract: A rotatable wood planing apparatus that includes a cylindrical planing knife body provided with a plurality of longitudinally extending, forwardly inclined, radially outwardly opening channels for holding knives. Parallel to each of the knife holding channels is an adjoining channel for holding a clamping means such as a gib for clamping said knives in the channels. The rear surfaces of the knife-holding channels and the forward surfaces of the knife-clamping channels are in planes that converge outwardly. A knife-holding clamp is provided to securely hold the knife in a desired position. The knives can accurately be fitted and secured into the clamps prior to insertion into the knife-holding channels.Means such as bolts or screws adjacent the rear of the knife-holding channels are provided for retaining the clamp and knife combination in the channel. A gib or wedge is fitted in the clamping channel to lock the clamps and knives in place upon elevation of the gib in its channel.

Abstract: A rotary slotting tool that includes a circular tool body having a V-shaped groove in its peripheral edge to establish a centering plane for individual cutter element holders. A pocket is formed in the leading face of each holder for mounting an individual cutter element. The pocket structure configuration is varied between successive holders so that successive cutter elements overhang different side faces of the associated holders. A common cutter element configuration is used for all of the cutter elements.

Abstract: A clamp for circular cutting tools (2) has a bearing bore (6) at the clamp head (5) in order to support a cup-shaped insert (7). The receptacle (9) of the cup-shaped insert (7) is elastically deformable and has a recess configured as a truncated hollow cone and the centering profile (3) of the circular cutting tool (2) is configured as a truncated cone. The convergin cone angle of the recess in receptacle (9) is smaller than the cone angle of the centering profile (3). Several cuts (10) separate the receptacle (9) in spring segments (11). The bottom (12) of the recess has a larger diameter than the contact surface (13) of the circular cutting tool (2). It is provided with a circular groove (14) running along its periphery.

Abstract: An improved cutting bit and associated holding block assembly for use on rotary wheel, chain or rotor cutters of the type having a plurality of cutting bits projecting outwards from the periphery of the wheel, chain or rotor and used to cut tree stumps or other hard or refractory materials includes individual holding blocks which each rotatably support within a bore therewithin a separate cylindrical cutting bit. The bore is canted inwards with respect to a radius of the wheel, chain or rotor, thus causing the outermost portion of a rotatable bit held in the bore to contact a surface to be worked at a negative top rake angle as the bit is rotated into contact with the work surface. The negative top rake angle advantageously provides clearance for chips severed by the bit.

Abstract: A ball nosed milling tool that includes a cutter plate having circular segmental cutting edges formed by chord-oriented shoulders inset into opposite faces of the plate. The shoulders form cutting faces that are acutely angled to the midplane of the plate, such that chips are directed away from the rotational axis of the cutter plate. The cutter plate is clamped within a slot in a supporting spindle by means of a threaded fastener that extends transversely through the plate and the spindle. A cylindrical shank portion of the fastener is oriented to exert a cam action on the surface of a hole in the cutter plate, such that the plate is firmly seated in the spindle slot.

Abstract: The present invention relates to a milling cutter having a cutter body and a plurality of replaceable tool cartridges circumferentially spaced about the outer periphery of the cutter body. An adjustment mechanism permits adjustment of the tool cartridges in the direction parallel to the axis of rotation of the cutter body. The adjustment mechanism includes an adjustment screw threaded into a corresponding bore in the cutter body. The head of the adjustment screw projects into an inclined throughbore in the tool cartridge. When the adjustment screw is turned, the head of the screw bears against the inner surface of the throughbore causing the tool cartridge to be axially displaced. A locking screw is tightened to secure the tool cartridge in place after it has been adjusted.

Abstract: A milling tool in which a circular cutter plate is located in a transverse slot formed in a rotary spindle. The circular plate has four chord-oriented shoulders inset into its side faces. A plate holder mechanism has a V-shaped edge configuration mated to two of the chord-oriented shoulders, such that the cutter plate is accurately and firmly located within the slotted portion of the spindle. The plate holder mechanism includes an axially extending post that fits into an axial hole in the spindle for accurately orienting the plate holder mechanism to the spindle.

Abstract: To retain elongated removable cutter elements (9, 90) on an axially elongated cylindrical body structure (1, 1'), eccentric holding plugs (27, 30, 300) are directly or indirectly engageable with the cutter elements so that the cutter elements can be clamped in grooves (5) with converging side walls, by engaging the eccentric elements either directly against the cutter elements (FIG. 4) or indirectly via a resiliently deflectable or deformable portion (16) of the tool body (1, 1'). The tool body can be formed as an open cage structure (1') (FIGS. 5-8) to permit granulated plastic material to fall between rods or rails (34) formed with the grooves (5) in which the cutter elements (9, 90) are retained by the eccenters (27).

Abstract: The invention provides a milling cutter for machining metal workpieces and a cartridge therefor. The milling cutter comprises a plurality of peripheral recesses for the receipt of insert-equipped cartridges. One of the walls of said recess is provided by two arms integral with the milling cutter body that each by means of a screw is arranged to clamp the cartridge against one wall in said recess. The cartridge is provided with two bores having suitable clearance for the receipt of said screws.

Abstract: An elongated grooving or threading tool has a cutting section, an intermediate section including a devibrator body, and a rearward cemented carbide section which are, respectively, held together in axial alignment by a drawbolt which engages the cutting section and cemented carbide section for holding the intermediate section under compression.

Abstract: For machining operations employing cutter heads, use is made of wear-resistant cutting materials, and the cutter heads are operated at constantly increasing cutting speeds and, for coarse machining operations, with high cutting forces. This requires on the one hand a highly reliable mounting of the individual cutter blades or cutter blade carriers, respectively, and on the other hand the possibility of axially and radially adjusting the cutter elements in the micrometer range for the compensation of wear.The invention provides a cutter head provided with cutter blade carriers (8) having an axial guide stem (9) and a cutter blade mounting portion (10), the guide stem (9) being received in an eccentric bushing (17) acting as a radial adjustment bushing, and coupled therewith for axial adjustment. The eccentric bushing (17) is retained in the main body (2) of the cutter head (1) at an axially fixed position for rotation in the circumferential direction.

Abstract: A rotary milling tool comprises a cutter body, a plurality of cassettes mounted in respective recesses formed around an outer periphery of the body, and a plurality of fasteners applying retaining forces to respective cassettes. Each retaining force comprises a radial inward component and a component directed opposite the direction of rotation of the body. The radial inward component wedges the cassette against first and second radially outwardly divergent walls of the recess. The other component wedges the cassette against the second wall and a third wall which are forwardly convergent.

Abstract: An insert rotary cutter includes a cutter body having a forward end face and at least one first cutter insert releasably attached to the cutter body. The first cutter insert is of a generally triangular shape including a front face having three marginal ridges and three corner ridges. Each marginal ridge is comprised of first, second and third ridge portions. The insert has three main cutting edges each defined by a respective first ridge portion, three auxiliary cutting edges each defined by a respective third ridge portion, three corner cutting edges each defined by a respective corner ridge, and three relief cutting edges each defined by a respective second ridge portion. One of the corner cutting edges and the main and auxiliary cutting edges which intersect the corner cutting edge are indexed in active cutting position. The indexed main cutting edge extends generally axially from the body while the indexed auxiliary cutting edge extends slightly beyond the forward end face.

Abstract: An adjustable cartridge to be mounted in a boring bar, the cartridge including a anvil rotatably affixed to said boring bar, the anvil including a pocket into which a lay-down indexable insert is affixed. The anvil is secured in an axially oriented slot which includes an arcuate seating face. Rotation of the anvil within the slot effects radial adjustment of the insert.

Abstract: A cutting-tool cartridge arrangement for rotary cutting tools in which the cutting-tool cartridge assembly is mountable in an aperture in the cutting-tool body member. The cartridge assembly has an annular split bushing for insertion into the tool body aperture, has internal threads and a slot in the wall to provide a pair of opposed surfaces resiliently movable towards and away from each other. A set screw aperture is provided in the tool body member. The stud seat is threaded into the split bushing. The stud seat has a cutting insert end having matching walls that match the wall configuration of the mounting walls of a frustum cutting insert. A clamping nut threadingly engages the stud seat threaded walls at the cutting insert end thereof and has internal walls configured to match the cutting inserts flank surface. Tightening the clamping nut on the stud seat clamps the frustum cutting insert therebetween.

Abstract: An elongated grooving or threading tool has a cutting section and a rearward cemented carbide section which are, respectively, held together in axial alignment by a threaded fastener and a drawbolt which engage the intermediate section and hold the respective connections under compression.

Abstract: In known cutter heads, the centrifugal forces occurring at high rotational speeds may cause the occurrence of dilatations permitting the cutting edges of the cutting tools to shift from their adjusted positions. An object of the invention is the provision of a cutter head capable of being accurately and reliably adjusted for operation also at high rotational speeds.According to the invention, a clamping wedge 13 is provided with a skewed clamping surface 21b adapted to cooperate with a contact surface 21a of a cutter blade carrier 2 for clamping it in a groove 20 of a mounting body 1. The invention also proposes the provision of a prism wedge clamping system 10 for supporting the cutter head carrier 2 in the radial direction relative to the mounting body 1.

Abstract: A reconditioned tool comprises a cylindrical insert cut from a damaged tool, such as a hog mill, with a milling face formed on one end and a transverse dovetail tenon cut in the other end. The dovetail tenon engages a transverse dovetail mortise in the end face of a cylindrical holder. A transverse slot in the holder splits the end of the holder into two axially extending end sections each of which includes one-half of the dovetail mortise. A clamping device, such as a bolt, draws the two end sections of the holder together to pull the insert firmly against the end faceof the holder through wedging action of the two halves of the dovetail mortise against the dovetail tenon. A locking pin inserted through aligned transverse grooves in the holder and insert prevents a lateral displacement of the insert relative to the holder.

Abstract: The head (1) of the planing tool includes a plurality of helical grooves (2) of dovetail cross-section uniformly distributed over its periphery. Wedging devices (6) with knives (5) resting thereon are insertable sideways in the grooves. Disposed in each wedging device is a securing arrangement (7), actuation of which causes the associated wedging device-and-knife assembly to be pressed against the outwardly tapering sidewalls (17, 18) of the respective groove and held fast. Each of the knives has two opposite cutting edges (19, 20), either of which can be brought into operating position by reversing the knife. A second groove (16) runs parallel to each first groove (2) for receiving a guide component of a knife-aligning device. Owing to the helical configuration of the grooves and the precisely aligned cutting edges of the reusable knives disposed in the grooves, vibration-free machining of workpieces with planing widths of up to more than two meters is possible.

Abstract: A cutting-tool cartridge arrangement for rotary cutting-tools in which the cutting-tool cartridge assembly is mountable in a aperture provided in the body member of the cutting-tool. The cutting-tool cartridge assembly has a split bushing for insertion into the aperture in the body member of the tool and the bushing is annular in shape, has internal threads and has a slot in the wall thereof extending from the threaded inside surface to the outside surface to provide a pair of opposed surfaces resiliently movable towards and away from each other. A set screw aperture is provided in the body member of the tool into which a set screw may be inserted and tightened against the split bushing. The stud seat having external threads is threaded into the split bushing and the stud seat also has a cutting insert end having matching walls that match the wall configuration of the mounting walls of a frustum cutting insert.

Abstract: A hammer assembly for a rotary material crusher having a rotor. The hammer assembly includes a hammer member and a base member. The base member is mounted at one of its ends on the rotor. The hammer member is mounted on the other end of the base member. The hammer member and base member each have two pairs of concave and convex surfaces, one for absorbing centrifugal forces and the other for absorbing impact forces and meshing, one surface with the other. The pair of concave and convex surfaces for absorbing centrifugal force are behind of the centrifugal force radial line of the hammer member in the direction of rotation of the rotor.

Abstract: Adjustable cutting tool bit support, usable as in a stump cutter body, including adjustable jack for variable registration depth of cutting bit, a differential screw engaging differential threads in the body and jack for adjusting the jack position, a wedge clamp for locking engagement of the body and tool bit in adjusted position and a differential screw engaging differential threads in the respective wedge clamp and jack for positively moving said wedge clamp into an effective clamping engagement.