TOOL HOLDING DEVICE WITH INCORPORATED ULTRASOUND ACTIVATION SYSTEM FOR MACHINING BY CHIP REMOVAL, GRINDING AND ULTRASONIC EROSION

摘要

The invention relates to a rotary tool holding device for machining by chip removal, grinding or ultrasonic erosion. According to the invention, the device comprises a fixed subassembly (B) mounted on the framework of a machine and a rotary subassembly (A), concentrically placed into the fixed subassembly (B) with rolling friction bearings, the rotary subassembly (A) is fixed at one end into the main shaft of a drilling and milling machine and at the other end it contains an ultrasound activation module (C) comprising a piezoelectric converter (3), a wave adapter concentrator (4), a bush (5) for clamping by thermal shrinkage for fixing a tool (6), the excitation signal is transmitted to the piezoelectric converter (3) by means of an inductive electromagnetic system, the component elements of the rotary subassembly are assembled in a firm and centered manner by contact on the conjugated taper surfaces and the ultrasonic system is cooled with pressurized air introduced through a hole (h) into the upper part of the device.