摘要
研究了单斜压头边位印压玻璃时裂纹产生和扩展规律,根据这一规律设计了玻璃切削刀具。该刀具能同时 利用玻璃的脆性断裂和微塑性对玻璃进行高效精密切削,表面粗糙度Ra达0.344μm,达到甚至超过精磨玻璃时的 质量。如果刀具参数选取得当,能在常规切削用量下获得在玻璃的塑性域内形成的、无微裂纹的加工表面。本文还 研究了玻璃切削刀具特征参数对已加工表面粗糙度的影响。
The rules of crack initiation and propagation are found when glass is indented at the edge of specimen by wedge with oblique single-edge. In the light of these rules, tools for glass cutting are designed in which precision cutting of glass with high efficiency based on the rules of brittle breakage and ductility can come true and machined surface roughness R a can be less than 0.344 μm, close to or even beyond surface roughness of precision grinding glass. Crack-free surface that is formed in ductile regime of glass can be obtained under conventional cutting conditions if the tool parameters are chosen properly. In addition, the influences of characteristic parameters of tools for glass cutting on machined surface roughness are presented in this paper.
出处
《机械科学与技术》
CSCD
北大核心
2005年第2期217-220,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
广东省自然科学基金博士启动基金项目(04300123)资助
关键词
边位印压
玻璃裂纹
微塑性
表面粗\糙度
Precision cutting of glass
Glass crack
Micro-ductility
Surface roughness
