Abstract: A broach assembly including a holder having an elongated slot for housing at least one cutting insert and semicircular wedges having a pair of cutting insert engaging faces which are adapted to secure the cutting inserts in the slot and to prevent misalignment and uneven wear.

Abstract: In accordance with the present invention, there is provided a cutting tool having a cutting tool insert which is automatically rotationally indexable. The cutting tool includes a shank and an indexable cutting tool insert rotatably connected to the shank. The insert includes a plurality of cutting edges and side surfaces therebetween. The cutting tool is also provided with an indexing device, lock pin, cam plate and eccentric cam pin. The indexing device comprises a sliding key and a pair of spring metal legs attached thereto for engaging a serrated portion of the lock pin to which the cutting tool insert is attached. The indexing device is effective for indexing the insert on the lock pin upon rotation of the cam pin which effects a lateral movement of the cam plate along the longitudinal axis of the shank whereby the cam plate engages the sliding key causing it to also move laterally to engage the indexing legs on the lock pin resulting in rotation of the lock pin and the cutting insert attached thereto.

Abstract: A tool clamping device is provided for quickly and securely clamping rotary tooling adaptors to tool clamp blocks. The device is adaptable to semi-automatic or robotic tool switching operations and minimizes machine downtime.

Abstract: A clamping device for releasably securing a tooling adaptor in a tool clamp block which includes a generally cylindrical member having an eccentric slot formed about the periphery of the member for engaging the tooling adaptor in the cylindrical member whereby when the cylindrical member is rotated the tooling adaptor is drawn into and secured within the tool clamp block.

Abstract: In a cast light-alloy piston having a skirt which is recessed adjacent to the piston pin bosses, the two sides of the skirt are unsymmetrical with respect to the piston pin bosses.For an improved adaptation to the different conditions of operation of the engine, the skirt is connected to the piston pin bosses on one side by supporting ribs which extend at an angle of 30 to 60 degrees to the piston pin axis, and on the other side by supporting ribs extending at an angle of 90.degree. to the piston pin axis.