Vibrating cutting tool.

摘要

A vibrating cutting tool capable of self-amplifying micro-vibrations at the cutter edge generated during machining. The vibrations at the cutter edge are transmitted to vibrators such as steel balls (10, 16, 19) supported on spring members (11, 18), compressing the springs. The springs rebound to push back the vibrators, which hit the cutter directly or through an output shaft (2) so that the vibrations amplified by the springs will be trasmitted back to the cutter edge. With a rotary type cutting tool, if the cutter is overloaded during machining, an output shaft (2) supporting the cutter is disengaged from an input shaft (1) fixed to a live spindle of a machine tool, thus preventing the cutter from being damaged. With an unrotatable type, if the cutter is overloaded, an air pressure detector detects the abnormality of the cutter and causes the machine tool to stop.