超声波振动金刚石刀具对脆性材料临界切削深度的影响

INFLUENCE OF ULTRASONIC VIBRATED DIAMOND TOOL ON THE CRITICAL DEPTH OF CUT OF BRITTLE MATERIALS

通过脆性材料沟槽切削试验,研究了超声波直线振动金刚石刀具和超声波椭圆振动金刚石刀具对脆性材料临界切削深度的影响,与没加超声波振动的金刚石刀具相比,超声波振动金刚石刀具能增大对脆性材料塑性切削的临界切削深度。提出了超声波振动金刚石刀具切削脆性材料临界切削深度计算公式,分析了导致超声波振动金刚石刀具增大脆性材料塑性切削的临界切削深度的原因。

The effects of the diamond tool on the ductile to brittle transition of the glass in ordinary cutting, conventional vibration cutting and ultrasonic elliptical vibration cutting are investigated experimentally. It is understood that the critical depth of cut for the ductile cutting of the brittle material in two kinds of ultrasonic vibration cutting can be increased as compared to ordinary cutting. The theoretical formulae for the critical depth of cut in ultrasonic elliptical vibration cutting and conventional vibration cutting are derived theoretically. The reasons for the increase of the critical depth of cut in ultrasonic elliptical vibration cutting and conventional vibration cutting are analyzed.