关键词: 玻璃切削, 玻璃裂纹, 大刃倾角刀具, 塑性域切削

Abstract:

Functional glasses are mainly hard and brittle, and are difficult to machine because cracks and concavities are easily form on the machined surface. In order to solve this problem, a glass-cutting process by using a singlestraight tool with big inclination angle is proposed, which helps to obtain integral surface without cracks and concavities in a cutting depth at sub-millimeter level. The corresponding cutting mechanism, as well as the effects of tool parameters and cutting parameters on the surface quality, is then analyzed. Experimental results indicate that, by using the single-straight tool with big inclination angle, the roughness Ra of machined surface is less than 0. 21 um and the integrity of the surface is better than that of the surface machined by the conventional precision grinding, and that there exist suitable ranges of tool and cutting parameters for high-quality machined surface.

Key words: glass cutting, glass crack, single-straight tool with big inclination angle, ductile cutting