Abstract: A tool for chip removing metal machining includes a holder, a solid cutting insert mounted in a pocket of the holder, and a clamp for securing the insert. The clamp includes a clamping surface frictionally engaging a planar upper surface portion of the insert. The clamp is attached to the holder by a screw causing a downward projection of the clamp to slide along a sloping surface of the holder in order to displace the clamp and the insert rearwardly until the insert abuts an upstanding support surface of the holder. As the clamp is being tightened-down by the screw, an elastic lip of the clamp is elastically deformed by a surface of the holder to tilt the clamp in a direction causing the clamping surface to bear more firmly against the insert. A stop arrangement terminates the tightening down of the clamp before the clamp is plastically deformed.

Abstract: A slot-widening key for use with insert holders of the kind that includes a blade shaped body having a slot intended to receive an insert. One surface of the slot is defined by an elastically flexible clamping arm for clamping the insert. The key has a shaft with two projections for engaging laterally opening seats in the body and the clamping arm, respectively. One of these two projections is provided on a pivoting link that is pivotably connected with the shaft via a hinge pin. The sum of a first distance between the hinge pin and one of projections, plus a second distance between the hinge pin and the other projection, is larger than the at-rest distance between the seats of the insert holder. Pivoting of the shaft beyond an unstable position of equilibrium thus makes the clamping arm deflect by a predetermined value for widening the slot. The key is self-supporting in the slot-widening position and does not require that the manual force be continuously applied.

Abstract: A cutting insert for chip-breaking metal machining includes an upper chip surface, a lower bottom surface, which is substantially plane parallel with the chip surface, one or several side surfaces that extend between said chip and bottom surfaces, and a through hole (12) for the accomodation of a locking screw (11). The hole (12) includes a rotation-asymmetrical portion (16) including a plurality of radially bulging portions (17) extending in the direction of the hole, the transitions (18) extending substantially in the direction of the hole between adjacent bulging portions being intended to pairwise abutting against the locking screw (11) and guiding the insert towards the right positioning in an insert seat, before the insert is clamped. In this way, it becomes considerably easier to position the cutting insert, particularly when it has a larger number of cutting edges, e.g. six or eight.

Abstract: A toolholder for holding a cutting insert, particularly for grooving and/or parting operations. The toolholder comprises a base and a clamping arm forming between one another a pocket and a slot. The pocket is open at a front end thereof for receiving the cutting insert, and the slot extends rearwardly from a rear end of the pocket. A fastening screw extends through the slot from the clamping arm to the base for displacing the clamping arm toward the base in order to clamp the cutting insert within the pocket. A stop is provided for limiting an extent of movement of the clamping arm away from the base, for defining a maximum height of the pocket.

Abstract: A system for clamping a cutting insert on a grooving, threading, or milling tool wherein a top clamp member and a support plate are mounted on the tool's surface. The contacting surfaces of the tool, clamp member, and support plate are ground to a smooth finish. A cutting insert is formed with upper and lower V-shaped surfaces and is received in corresponding V-shaped recesses formed in edge portions of the top clamp member and the support plate. Bolts having left hand threads secure the top clamp member to the tool so as to clamp the insert between the top clamping member and the support plate.

Abstract: An insert holder having a slot adapted to receive a cutting insert, a part of the slot being formed by a clamping arm. Two laterally opening seats are provided in the holder for receiving two spaced-apart projections of a key that is intended to bend the clamping arm outwards for widening the slot during the mounting and/or dismounting of a cutting insert. One of the seats has a cylindrical shape and defines a fulcrum for receiving the first projection, while the other seat has an oblong shape in order to effect outward bending of the clamping arm in response to displacement of the second projection along the oblong seat from a first point thereon located at a certain distance from the first fulcrum to a second point thereon located at a shorter distance from the fulcrum.

Abstract: A toolholder assembly includes a holder blade having an upper clamping jaw and a lower base jaw defining therebetween an insert receiving slot for releasably retaining a cutting insert therein. The upper clamping jaw has an upper surface disposed apart from the insert receiving slot and formed with a recess towards its front end. A wear resistant shield insert is releasably retained within the recess and has an upper surface substantially flush with the front end's upper surface.

Abstract: A toolholder forms a seat in which a cutting insert is seated. The insert is held in place by a clamp having front and rear portions. The front portion engages within a center hole of the insert, and the rear portion engages an inclined surface of the toolholder so that the clamp is pushed downwardly and rearwardly when attached by a screw. A coil spring surrounds the screw and is compressed between the clamp and the toolholder to bias the clamp upwardly. An upper end of the spring is disposed in a bore of the clamp which is inclined relative to the screw, whereby the spring abuts a rear portion of a wall of the bore to bias the clamp rearwardly as well as upwardly.

Abstract: A cutting insert for the chipforming machining of metals is mounted on a holder. A holding surface of the holder includes at least one rib extending in the longitudinal direction of the holder. The bottom surface of the insert includes at least one groove which receives the rib of the holder. The flanks of the rib and groove are inclined, whereby the insert is supported by those flanks. The bottom side of the insert further includes a transverse surfaces extending perpendicular to the groove and which are adapted to engage corresponding transverse surfaces of the holding surface, in order to resist longitudinal forces applied to the cutting insert.

Abstract: A slot opening key having a body member provided with a first, planar abutment surface and a second surface recessed with respect to the first surface and co-directional therewith. The body member is provided with a pair of spaced-apart prongs which are substantially parallel to one another. The first prong protrudes from the first surface, and the second prong is positioned such that it is spaced apart from the first prong by at least a portion of the second surface. A prong rotating lever is provided to eccentrically rotate one prong relative to the other to adjust the spacing therebetween. The slot opening key is used to facilitate removal and insertion of a cutting insert retained between a resilient clamping jaw and a rigid base jaw, by inserting the prongs into corresponding apertures in each jaw, and actuating the rotating lever. The second surface between the first and second prongs provides clearance so that the key body remains clear of the insert during insertion and removal.

Abstract: A cutting tool assembly comprising a tool holder formed with an insert retaining pocket having a pocket base wall and in which is releasably mounted a cutting insert and a shim. The cutting insert is of a substantially prismatic shape having an upper surface, a lower surface and side relief flank surfaces and at least one cutting corner defined therebetween and presenting at least one cutting edge formed by the intersection of the upper surface and a corresponding number of the side relief surfaces adjacent thereto.

Abstract: A tool holder in which a clamping element is integral with the tool body and movable into clamping and unclamping positions by simple screw or other adjustment. In one embodiment the tool holder comprises an elongated metal body having a mounting portion adapted for attachment to a machine and a forward end operative to retain a cutting tool thereon. The forward end includes an elongated clamping element integral with the body and space therefrom to provide a recess into which a tool bit is insertable. A set screw or other actuating element is cooperative with a portion of the elongated element and the body to cause flecture of the web portion and movement of the elongated element toward the confronting surface of the body to clamp a tool bit into position.

Abstract: A cutting tool and shank is disclosed, the shank including a seat for receiving therein the cutting tool, the seat having at least two non co-planar surfaces. The cutting tool and shank further include a spring-biased ball projecting from either the shank or the cutting tool and engageable with a cavity provided within the other of the shank or cutting tool so as to urge the cutting tool into the seat of the shank. A detent element may also be provided which, according to one embodiment of the present invention, comprise a groove formed in one of the cutting tool or the shank, and a flange formed in the other of the cutting tool or the shank, the flange being receivable within the groove to restrain the cutting tool on the shank. The cutting tool may comprise a cartridge including at least first and second mateable halves. According to this embodiment, a bolt releasably engageable with the shank may be provided for removably capturing the first and second halves of the cartridge in a mated condition.

Abstract: Reversible thread cutting tool holders having a holder body, a plate and a clamp for securing and orienting a cutting insert on opposite sides of the holder body. In one embodiment, the plate is a flat member being reversibly orientated on a top surface of the holder body and having a cut-out portion to receive part of the cutting tool. The clamp is attached to either side of the holder body and cooperates with the cut-out portion to secure the cutting insert. In a second embodiment, the holder body includes a cut-out portion to receive the cutting insert and the plate is an angle plate. The angle plate and clamp are selectively positioned on opposite surfaces of the holder body adjacent the cut-out portion to orient the cutting insert for opposite thread cuts.

Abstract: A tool assembly has a tool holder having a holder support face, a clamping dog having a dog surface spaced from and facing the holder support face, and a tool between the holder and the dog and having an end cutting edge, a face directly confronting the support face, and a surface directly confronting the dog surface. One of the surfaces is formed with a recess and the other surface is formed with a bump engageable in the recess. The dog surface can be pressed in a clamping direction generally perpendicular to the faces and surfaces toward the support surface and to clamp the tool between the dog and the support. The bump and recess are so dimensioned that they engage each other at at least three locations spaced from one another perpendicular to the clamping direction.

Abstract: A cutting tool assembly comprising a tool holder formed with an insert retaining pocket having a pocket base wall and in which is releasably mounted a cutting insert and a shim. The cutting insert is of a substantially prismatic shape having an upper surface, a lower surface and side relief flank surfaces and at least one cutting corner defined therebetween and presenting at least one cutting edge formed by the intersection of the upper surface and a corresponding number of the side relief surfaces adjacent thereto.

Abstract: A holder assembly for a chip-removal tool insert has a holder member formed with two clamping jaws which are spaced apart and form an elongated slot there between, the slot is provided with an enlarged opening formed between curved surfaces on opposite inner faces of the jaws, the opening receives an expansion key rotatable in the slot for a further displacement of the jaws from each other during insertion of the chip removal tool in the slot.

Abstract: A shim for use in a metal cutting tool comprised of a tool holder and a double sided cutting insert. The insert has rake surfaces formed in the corners of upper and lower surfaces of the insert with a recess formed in the corners. The shim is used to retain the insert in the tool holder. The shim has a shape and lateral dimensions substantially corresponding to the insert. The shim has at least one projection which mates with the recess. When the insert and shim are clamped in the tool holder, the projection adjacent an operative pair of insert cutting edges bears against the walls of the associated recess, effectively supporting the insert in this region. This results in the inoperative lower cutting edges being spaced from the shim.

Abstract: A cutting tool assembly with a clamping mechanism for releasably clamping a tool bit (18) on a tool holder (10) is disclosed. The tool holder (10) defines an elongated planar seating surface (12) with a socket (14) on its forward end and a threaded bore (20) on its rear end. A further threaded bore (22) is provided in the seating surface intermediate the forward and rearward ends. A conical tool bit (18) forms a circular cutting edge (52) and has a shank (16) adapted to be received in the socket (14). An elongated bar-shaped clamping member (32) has one end engaging in a circumferential groove (28) of the tool bit (18). The opposite end of the clamping member (32) has arcuate concave surface portion (32b) for abutment with the conical surface on a tapered head (34) of an adjustment screw (36) engaged in the threaded bore (20) of the seating surface (12).

Abstract: A form insert toolholder assembly including a toolholder having a base. The base includes a base inclined surface having an outer edge and an inner edge. The base further includes a clamp receiving portion having top wall, a first side wall and a second side wall. The top wall defines a clamp receiving portion opening. The inner edge and the first side wall define an insert pocket. A pin is positioned on the base inclined surface between the outer edge and the inner edge. The assembly further includes a clamp having an upper surface and a lower surface. The clamp defines a clamp opening extending from the upper surface to the lower surface. The lower surface has a clamp inclined surface that is parallel to the base inclined surface. The assembly further includes an insert having a cutting edge, a mounting edge, a first end, a second end, a base surface and a clamp surface.

Abstract: A cutter blade is provided having a cutting face. Formed in the cutting face are a plurality of spaced apart slots, each slot having forward and rearward sidewalls. A tooth is removably received in each of the slots, each tooth having a top surface extending above the cutting face and having forward and rearward sidewalls, The top surface of each tooth has a forward cutting edge and a rearward reduced height step section. A retention bar is provided for each tooth, each retention bar having a forward end that is received in the step section. A pin extending through an opening in each retention bar is threadably connected to the cutting face. By tightening the threaded pin the retention bar retains each tooth during cutting operation so that the tooth sidewalls frictionally engage the slot sidewalls and by unthreading the pin the retention bar may be rotated to permit removal and replacement of each of the teeth.

Abstract: A tool has a tool body which defines a first seat into which is secured an anvil. The anvil and the tool body define a second seat into which a backup plate is located. The backup plate has a longitudinally extending groove which is used to locate a form tool cutting insert. A first clamp assembly exerts a clamping force on the insert and backup plate against the anvil in a first direction. A second clamp assembly exerts a clamping force on the insert and backup plate against the anvil in a second direction, the second direction being approximately 90.degree. to the first direction. The insert has a cutting surface of a predetermined configuration on two opposite sides such that indexing of the cutting insert 180.degree. will position the opposite cutting surface in the machining ready position. The backup plate has a complementary predetermined configuration to support each of the cutting surfaces of the insert. The clamping of the insert and backup plate against the anvil in two directions approximately 90.

Abstract: A machining apparatus is described, of the type that includes a metal cutting insert which is held by an insert holder apparatus, wherein the insert can be installed in a plurality of different positions to use different ones of the cutting edges, which facilitates mounting of the insert. The holder apparatus includes a holder bar (16, FIG. 1) and a pocket member (14) that mounts on the bar and that holds an insert (12) with cutting edges (22). The pocket member has a first precision flat surface (90) that mounts facewise against a flat surface on the bar, and the pocket member has a second precision flat surface (92) that mounts facewise against a surface on the insert. The first and second flat surfaces on the pocket member can be parallel, or can be angled slightly from each other, to control orientation of the insert. The insert has a mount portion (32, FIG.

Abstract: A rotatable cutting tool for cutting a spherical seat carries a plurality of indexable cutting inserts at the front end of the cutter body. The inserts are located in pockets and retained in the pockets by respective retainer members mounted on the body and overlying the exposed face of the insert. A reduced diameter section at the rearward end of the cutter body is dimensional to be rotatably received in a bore extending through a plate-like hanger. A retainer plate is cooperable with headed cap screws projecting from the rear end of the reduced diameter section of the body to constitute a quick disconnect coupling for rapid mounting and dismounting of the cutter upon its hanger. The cutting edges of the inserts lie in respective axial planes offset forwardly, with respect to the direction of rotation of the tool, from the axis of rotation and angularly offset from each other by unequal angles.

Abstract: In thread cutting and slotting, indexable inserts of hard metal are now used. Usually, the inserts used have been of triangular type. In order to improve cutting economy, implying improved positioning, closer tolerances, and increased strength, an insert (1) has been developed for use in, for example, internal thread cutting, said insert (1) being formed with two cutting edges (2, 2') on a bevelled cutting body (1, 3). Since the cutting body (1) is located on a cutting column (10), the cross section of which is symmetrical, the insert with the cutting body (1) and the cutting column (10) may be reversed half a turn with essentially retained directional geometry. The insert (1, 10) has a plurality of plane guiding and contact surfaces (5, 5', 6, 6', 14, 14') adapted to match the corresponding plane guiding and contact surfaces in an insert holder (13) in order to achieve correct positioning of the indexable insert in the insert holder.

Abstract: This invention relates to an adjustable face grooving tool holder adaptable for holding a cutting insert for cutting circular face grooves having widely differing diameters in the end face of a workpiece without interchanging tool parts.

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: A centrifugally operated clamping device for clamping a reversible blade insert in a planing tool ensures positive engagement between the clamp and the blade. The clamping device includes a clamping wedge which has an inverted T-shaped cross-section and is positioned in a similarly configured groove in the tool. The wedge is biased relative to the bottom of the groove so that the clamp will be easily disconnected from the blade.

Abstract: A cutting insert with improved chip control and metal cutting capabilities and a toolholder with an improved clamping arrangement for use in combination therewith. The insert includes a first notch disposed in the insert body extending from the cutting end to the mounting end thereof. A top wall of the insert body has a forward section with a cutting edge, a middle section with a second notch extending across substantially the entire insert body and a rearward section. In one embodiment, the forward section of the insert body includes a chipbreaker. In another embodiment, the forward portion includes an advanced cutting material which defines a cutting edge. In yet another embodiment of the insert, the insert body top wall forward section defines the cutting edge and the insert body does not include a chipbreaker.

Abstract: There is disclosed an insert clamped tool which has a tool holder including a recess formed at a forward end thereof and defining an insert-receiving seat. The tool holder has a pin-receiving hole formed therein so as to open to the insert-receiving seat and having a tapered portion. A positioning pin is releasably received in the hole of the tool holder. The positioning pin has an engaging portion formed at one end thereof and a tapered portion fitted in the tapered portion of the hole. A cutting insert having a mounting bore formed therethrough is received on the insert-receiving seat in such a manner that the engaging portion of the positioning pin is held in abutting engagement with the mounting bore of the insert. A clamp mechanism is arranged on the tool holder for pressing the insert against the insert-receiving seat and the engaging portion of the positioning pin.

Abstract: High speed milling or drilling tool of the type including a rotatable head which carries several circumferentially arranged cutting insert holders for reversible cutting inserts retained by dogs. Each insert has a pair of parallel top surfaces bounded by four orthogonal end surfaces, two of which are received against perpendicular sidewalls in an open pocket of the holder. Each top surface has at least one pair of elongate clamping indentations which are formed as surfaces of rotation and lie at a like angle .beta. to the adjacent end surface of the insert.

Abstract: A basic tool holder for attachment in an accommodating recess of a tool support, particularly a turret head, with a base part, to which can be attached a work-holding device by one or several clamping means, between which the tool is clamped. A component of the clamping force, directed radially towards the tool support, is produced by at least one abutment face between the base part and the work-holding device forming a wedge-shaped incline for the clamping means.

Abstract: The present invention concerns to a clamped cutting tool used in the metalworking field. The clamped cutting tool includes a tool-holder, a shim member placed on the tool-holder, a cutting insert placed on the shim member, and a locking pin held in engagement with the tool-holder for clamping the cutting insert. The tool-holder includes a forward end portion having an insert receving recess formed therein, the recess having a bottom wall and at least one side wall extending upwardly from the bottom wall, the bottom wall including a pin-receiving hole of a circular cross-section formed therein so as to extend downwardly. The shim member has a bore of a circular cross-section formed therethrough, the shim member being disposed on the bottom wall of the recess in such a manner that the bore communicates with and is concentric to the hole of the tool-holder.

Abstract: A forming tool for generating a predetermined configuration in a rotating metal workpiece includes a tool body having a shelf formed thereon, a shim on the shelf, a cutting insert having a cutting edge on the shim and a clamp assembly for clamping the insert and the shim on the tool body. The clamp assembly includes a clamp member having top and bottom sides, and a pair of screws for securing the clamp member on the tool body. The clamp member has a pair of substantially parallel elongated front and rear clamping pads formed on the bottom side thereof and it is mounted so that one of the clamping pads is supported on the tool body whereas the other clamping pad engages the insert to secure it on the tool body. The clamp member has an arcuate crown formed on the top side thereof which is oriented so that the apex thereof is substantially parallel to the clamping pads.

Abstract: In a lathe tool composed of a holder and a reversible cutting plate for cutting a groove or thread, the holder being formed to have a recess for accommodating the cutting plate, the recess having a bottom face and a side face, and the cutting plate having a longitudinal dimension, two longitudinal spaced frontal end faces each having a cutting edge, a narrow longitudinally extending edge extending between the frontal end faces and arranged to bear against the bottom face of the recess, a longitudinally extending broad side extending between the frontal end faces and transversely to the narrow edge and arranged to bear against the side face of the recess, and a fastening bore having an axis extending transversely to the broad side, the lathe tool further including a clamping device for holding the cutting plate in the recess with the narrow edge and broad side of the cutting plate bearing against the bottom face and side face, respectively, of the recess, wherein the clamping device includes a clamping element

Abstract: An indexable cutting tool wherein wear-resistant inserts are removably supported within a recess in a tool holder which has walls generally conforming to the adjacent surfaces of the insert. Interposed between the adjacent surfaces of the insert and the walls of the recess is a spacing shim with at least two portions which separate the insert from the walls of the recess. The portions which separate the inserts from the walls of the recess are connected by a weakened portion which may be scored or reduced in dimenson. The shim, as manufactured, is flat with the weakened portions connecting the portions adapted to separate the insert from the recess walls being provided to permit the shim to conform to a variety of insert configurations. The portions of the shim which separate the surfaces of the insert from the walls of the recess have a thickness which is equal to the amount of material removed from the surfaces of the insert in one or more resharpening operations.

Abstract: Adjustment of the radial position of the tool bit is accomplished by insertion of the bit in a recess of a clamping shoe which clamps the bit against a shoulder in the cutter head. The clamping shoe has an extension which is rotatably mounted in a recess in the cutter head. A single wedge-shaped adjustment member rotates the clamping shoe with the cutter blade thereby changing the radial distance between the cutting edge and the axis of rotation of the tool.

Abstract: Single or multiple recessing tool with cutting plates loosely mounted in an opening of the holder with the cutting plates, possibly using shortened gage block-like supplemental plates, clamped against the bottom and one side wall of the opening by means of an essentially L-shaped mounting frame overlapping the plates of the plate package from above and one side with a clamping pressure component being produced when clamping the mounting frame against the bottom via a wedge ramp lateral to the side wall and with adjusting ribs being arranged on the bottom of the opening and/or the bottom side of the upper clamping leg of the mounting frame engaging into the fitting grooves of all of the plates.

Abstract: A ceramic insert for a tool holder is in the shape of a tapered cylinder wherein the diameter increases outwardly along the insert length, from a first end to a second end. The second or upper end of the insert has a bevel around its circumference; the intersection of the bevel and tapered sidewall of the cylinder provide a cutting edge which has a negative rake and relief angle which are desirably constant around the insert. Thus the insert may be mounted on a neutral plane in a tool holder and a tool will cut equally well in any direction along a 180.degree. arc. Various engagement and clamping means are used to hold the insert in place in the tool holder.

Abstract: A cutting tool provides a cutting insert receiving slot with a retaining lip to engage a face of the insert and prevent movement normal to its face. The insert has a centrally disposed keyway extending fully across one face. In one embodiment the lip engages the keyway; in another embodiment a locating pin engages the keyway to prevent longitudinal movement of the insert relative to the holder.

Abstract: A face grooving tool is disclosed for machining circular grooves in a metal workpiece. More particularly, a face grooving tool includes an elongated shank having an arcuate support blade projecting axially outwardly from one end thereof. The leading surface of the support blade includes an offset V-groove configuration, with the vertex thereof being located nearer to the radially inner surface of the support blade than the radially outer surface. By this arrangement, the radially outermost portion of a cutting insert, which is receivable in the offset groove, is provided with added support during a cutting operation. The arcuate configuration of the support blade enables the blade to be received in the circular groove being machined in the workpiece thereby providing continuous support for the insert.

Abstract: A tool holder for retaining a cutting tool, the toolholder including a body portion, a clamp portion operably connected to the body portion, the body portion having a first jaw portion, the clamp portion having a second jaw portion, the jaw portions being adapted to receive the cutting tool therebetween, and a holding strap pivotally mounted on one of the jaw portions, the holding strap having a flat surface for engagement with a surface of the cutting tool.

Abstract: A tool holder for grooving and parting machining operations and the like having a cutting insert received on a support plate carried by a tool body. Recesses in the bottom and rear edges of the support plate bear on support pins pressed into the body and the support plate is retained in engagement with the pins and a side face of the body by a screw extending through a hole in the plate and threaded into the body. A clamp carried by the body bears on the cutting insert to retain the insert in a seat on the plate.

Abstract: An improved tool holder of the type having an insert receiving pocket and using tiltable pin to clamp an insert in the pocket. The pin is located in a bore through the bottom of the pocket of the tool holder and is tiltable therein so that one end of the pin engages a center hole of an insert and clamps it in the pocket. A recess communicates with the bore near the lower end of the pin when the pin is in the bore and spherical elements such as balls are disposed in said recess. Means for moving said spherical elements are provided so that the pin is tilted into clamping position on the insert. A top clamp is provided that cooperates with the pin element in clamping said insert.

Abstract: A holder for a rotary metal cutter for use with a milling machine having a shouldered head portion, a cutter and a clamp member. The cutter is sandwiched between the clamp member and the shoulder of the head portion. Where it is desired that the cutter be adjustable on a horizontal plane, a variation of the holder is provided, which includes a clamp element cooperating with a clamp member to permit the required rotation and to assure a secure clamp on the cutter after adjustment. Variations of the holder are included for engaging two cutters set on opposite sides of the holder.

Abstract: The invention relates to a cutting tool especially useful for cut-off, threading and grooving operations. The tool includes a massive block-like body with serrations along one or both sides. An adjustable plate with interengaging complemental serrations is mounted on the side of the body and retained by bolts which transfix the plate and anchor in the body. The plate has a top recess to receive short cutting elements backed up by a similarly shaped rod. A broached out-of-round hole is cut into the body parallel to the serrated wall to receive at one end a threaded anchor nut and at the other end a shank of a clamp bar.

Abstract: A cutting tool which may comprise: an elongated bar member having a wedge-shaped recess at one end thereof; a wedge-shaped anvil member rigidly and removably fastened in the wedge-shaped recess of said bar member, having an elongated recess in which a cutting insert may be received; and a clamp member removably fastened to the bar member for rigidly clamping the cutting insert in the elongated recess.

Abstract: An indexable insert for cutting internal and external grooves in a workpiece is adapted for mounting and securing upon a tool holder having a pocket therein; whose bottom edges define an obtuse angle. The insert comprises an elongated body of rectangular cross section having a flat top surface along one edge of the body and a pair of angular bottom surfaces extending from a central point of the body and inclined toward and extending to said top surface at a corresponding included obtuse angle. These inclined surfaces define a pair of separately usable transverse cutting edges at the opposite ends of said body which is adapted for snug registry within said pocket. Said pocket also defines within the tool holder a back up plate against which the insert bears. The insert, one or more, is held down within said pocket by a clamp which bears across the top edges of said inserts. A cam lock device is also mounted upon said holder to apply lateral pressure to the insert holding it snugly against the back up wall.

Abstract: A combination work tool and holder therefor, wherein the work tool is stabilized during work movement by the provision of an independently movable stabilizer bar mounted alongside and generally parallel to a tool holding bar, a rigid member clamping the bars together in order to increase the rigidity of the tool holding bar. The ability of the stabilizer bar to be independently moved enables the two bars to be clamped together in various positions in order to eliminate interference with working clearances and the like. Additionally a holding block construction for positioning the bars with respect to each other is disclosed.

Abstract: A cutting tool assembly which includes a tool fixture support and a clamping strap mounted on a tool holder. The tool fixture support is provided with at least one groove or bore for receiving at least one pin element on the clamping strap whereby the lateral centering of the tool fixture support and the clamping strap is effected. The clamping strap includes a vertically extending lug portion received in a channel provided in the tool fixture support which ensures the vertical alignment of the clamping strap with respect to the tool fixture support. The tool fixture support and clamping strap are mounted on either a rigid tool holder provided with at least one longitudinally extending channel for receiving at least one connecting tongue of the tool fixture support or are mounted on a resilient tool holder. The construction of the tool fixture support and clamping strap result in a construction for enabling the use of the tool assembly as either a right hand or left hand tool.