Yamazaki Mazak Corporation

Kazukane Kunii

Norihiko Shimizu

Kiyokazu Kainuma

An end surfaceof a workgripped by a chuckequipped to a main spindle of a lathe-type machine tool is machined, and at the same time has a screw holeformed thereto. The jig plateis provided with a main bodyhaving a fixing surfaceand an inverse tapered portion. The jig plateis provided with a bolt, and is fixed to the workby a torque wrench tool. A chuck clawof a chuckof the second main spindle grips the inverse tapered portionand processes the remaining surfaces of the work.

Jig plate

A casing is rotatably and stoppably held on tool supporting means, a rotary tool spindle is rotatably supported on the casing so as to have a shifted rotary center with respect to the rotary center of the casing, power transmission means is rotatably supported on the casing, and the power transmission means and the rotary tool spindle are engaged through eccentric engagement means. The movement of the rotary tool in the Y-axis direction is performed by integrally rotating the casing and the rotary tool spindle. The machining is performed by rotating the power transmission means in the state where the casing is held stationary, thereby to rotate the rotary tool with respect to the stationary casing through the eccentric engagement means.

Growing community of inventors

Aichi-pref., Japan

Kazukane Kunii