Abstract: A cutting insert is clamped in a pocket of a holder by a top clamp assembly which includes a clamp arm screwed to the holder, and a clamp plate interposed between the insert and a front part of the clamp arm. The clamp plate is formed of a harder and more wear-resistant material than the clamp arm and transmits clamping forces from the clamp arm to the cutting insert. The hard clamp plate shields the clamp arm from being impacted by chips generated during a machining operation, thereby minimizing wearing of the clamp arm.

Abstract: A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying a cutting force between the insert (11) and the workpiece, a chipbreaker (23) having a surface (27) that is effective in breaking chips (55, 56) of different thicknesses when positioned at different distances from the cutting edge (19) of the insert (11), and a mounting mechanism (30) for movably mounting the chipbreaker (23) onto the holder (3). The mounting mechanism (30) includes a spring (50) for automatically adjusting the distance between the chipbreaking surface (27) of the chipbreaker (23) and the cutting edge (19) of the insert (11) in response to the forces applied to the chipbreaker (23) by the metal chips (55, 56) that result from the cutting operation.

Abstract: A metal cutting tool assembly (1) having an automatically adjustable chipbreaker (23) is provided that comprises a cutting insert (11) for cutting a relatively rotating workpiece, a holder (3) for holding the insert (11), an insert driver (5) for applying a cutting force between the insert (11) and the workpiece, a chipbreaker (23) having a surface (27) that is effective in breaking chips (55, 56) of different thicknesses when positioned at different distances from the cutting edge (19) of the insert (11), and a mounting mechanism (30) for movably mounting the chipbreaker (23) onto the holder (3). The mounting mechanism (30) includes a spring (50) for automatically adjusting the distance between the chipbreaking surface (27) of the chipbreaker (23) and the cutting edge (19) of the insert (11) in response to the forces applied to the chipbreaker (23) by the metal chips (55, 56) that result from the cutting operation.

Abstract: A cutting tool which includes a mounting shaft and a chip breaker positioned on the mounting shaft. A cutting plate is supported between the mounting shaft and the chip breaker, with a clamping jaw being positioned on the chip breaker. A clamping screw is releasably held in the cutting tool mounting shaft for holding the clamping jaw and the chip breaker against the tool mounting shaft. The clamping screw has a longitudinal axis and an outer portion which is situated externally of the clamping jaw. A spring is provided for urging the chip breaker against the clamping jaw. The clamping jaw and the chip breaker have interengaging teeth on their surfaces which are oriented towards one another. The chip breaker further includes a throughgoing aperture through which the clamping screw passes. The throughgoing aperture is enlarged to form an elongated opening for permitting lateral movement of the chip breaker transversely to the longitudinal axis of the clamping screw.

Abstract: This invention is directed to an adjustable chip breaker associated with a cutting tool having a cutting bit. The position of the chip breaker can be adjusted with respect to the cutting tool.

Abstract: This invention relates to an apparatus for guiding a continuous chip formed in lathing. The apparatus can guide the chip smoothly without jamming caused by, for example, curling of the chip so as to prevent the finished surface of a workpiece from damaging and reduce idle time due to dealing with the jammed chip. The apparatus has a guide member mounted on or integral with a cutting tool. The guide path is provided in the guide member for passing the chip, and the guide path has an inlet in the vicinity of the cutting edge of the cutting tool and an outlet remote from the cutting edge. The guide path is inclined, at its inlet portion, with an angle substantially equal to the flowing direction of the chip. The shape and dimension of the guide path may be varied in accordance with the nature of the chip. A detector may be used for detecting the smooth operation of the continuous chip or for detecting the jamming of the chip around the inlet so as to stop the operation.

Abstract: This invention relates to an apparatus for guiding a continuous chip formed in lathing. The apparatus can guide the chip smoothly without jamming caused by, for example, curling of the chip so as to prevent the finished surface of a workpiece from damaging and reduce idle time due to dealing with the jammed chip. The apparatus has a guide member mounted on or integral with a cutting tool. The guide path is provided in the guide member for passing the chip, and the guide path has an inlet in the vicinity of the cutting edge of the cutting tool and an outlet remote from the cutting edge. The guide path is inclined, at its inlet portion, with an angle substantially equal to the flowing direction of the chip. The shape and dimension of the guide path may be varied in accordance with the nature of the chip. A detector may be used for detecting the smooth operation of the continuous chip or for detecting the jamming of the chip around the inlet so as to stop the operation.

Abstract: A cutting tool with a holder and a removable insert that has a flat positioning surface and a cutting edge located in the plane of said surface. The insert is carried in a slot of the holder, with the positioning surface of the insert clamped against a locating surface of the holder that in part forms the slot. The locating surface of the holder orients and locates the insert and, hence, the cutting edge in a plane that remains unchanged after the cutting edge is sharpened by grinding and lapping the positioning surface of the insert. Where the cutting edge is formed in a tip or bit of diamond or other cutting material different from the insert, the tip or bit need not be removed from the insert and reset for grinding or lapping. In use, the insert is clamped to the holder intermediate its ends and contact with the locating surface is restricted to spaced areas on opposite sides of a clamping screw.

Abstract: An improved carbide bit cutting tool comprising of the type a tool body having a tool-bit-receiving aperture formed therein inwardly of the front end thereof, a carbide tool bit slidable in the aperture so as to be adjustably positionable outwardly of the front end of the tool body, said tool bit having a steel body and a carbide tip cemented on the front end thereof, a fastener for adjustably fastening the tool bit in place in the aperture, a chip breaker member disposed on top of the tool bit and slidable in the aperture so as to be adjustably positionable inwardly of the front end of the tool bit, a second fastener for adjustably fastening the chip breaker member in place in the aperture on top of the tool bit, the front end of the tool bit having a predetermined shape for carrying out a cutting operation and the front end of the chip breaker member having a corresponding shape so as to break chips during the cutting operation inwardly of the front end of the tool bit, the cross-section of the tool bit and