COLLET FOR A LONG AUTOMATIC TURNING LATHE

摘要

A system and a method for implementing collet (1) having a plurality of resilient and elastic coupling elements (13) intermediate solid jaws (3). The elastic coupling elements are appropriately profiled to allow radial expansion and contraction of the collet opening to accommodate turning operations over a wide range of workpiece nominal diameters while ensuring workpiece stability at high speed RPM. The collet has a predetermined elastic-to-solid cross-section ratio selected according to a threshold, which is the stability criterion.