Bearbeitungsverfahren für schwer zu bearbeitende Materialien und Bearbeitungswerkzeug dafür

摘要

A machining tool suitable for machining, e.g., lathing, of a workpiece made from a difficult-to-machine material such as fully sintered ceramics and quench-hardened high-chromium cast irons has a conically pointed cutting chip of a cemented metal carbide and is provided with a round-bottom groove having a 0.2-0.5mm radius of curvature running with an inclination angle of 15-60 DEG relative to the cutting face of the chip. A machining method for a workpiece of a difficult-to-machine material uses the above-mentioned machining tool, in which ultrasonic vibrations are applied to the tool in the cutting direction so that abrasive wearing of the flank surface can be reduced.