Ma Chunxiang  Wang Yan

(School of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200030)

Shamoto E

(Faculty of Engineering, Nagoya University, Nagoya 646-8603 Japan)

Moriwaki T

(Faculty of Engineering, Kobe University, Kobe 657-0030 Japan)

Abstract: 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.

Key words: Brittle material  Ultrasonic linear vibration  Critical depth of cut  Ultrasonic elliptical vibration

CLC No: TG16

Received 20041005, received in revised form 20050401