CHUCK PART STRUCTURE OF GRINDING MACHINE

摘要

PROBLEM TO BE SOLVED: To efficiently grind an eccentric part w2 of a work w even in the case of a comparatively long work w to a collet by stably supporting the work w in the state of projecting like a cantilever toward the front of a spindle 6. SOLUTION: The collets 20, 21 for holding the work w are respectively provided in front and rear portions on the center line of rotation of the front end part of the spindle 6. These paired collets 20, 21 are operated to hold two front and rear portions of one end part of the work w.