超精密切削氟化钙单晶金刚石刀具磨损研究

中国机械工程 ›› 2011, Vol. 22 ›› Issue (13): 1519-1522,1526.

超精密切削氟化钙单晶金刚石刀具磨损研究

陈浩锋;王建敏;戴一帆;郑子文;焦飞飞

国防科学技术大学,长沙,410073

出版日期:2011-07-10 发布日期:2011-07-14
基金资助:
国家自然科学基金资助项目(50775217，60908022)；国家部委基金资助项目(9140A18070108KG0147)
National Natural Science Foundation of China（No. 50775217，60908022）

Research on Diamond Tool Wear in Ultra-precision Cutting of CaF2 Crystals

Chen Haofeng;Wang Jianming;Dai Yifan;Zheng Ziwen;Jiao Feifei

National University of Defense Technology,Changsha,410073 

Online:2011-07-10 Published:2011-07-14
Supported by:

National Natural Science Foundation of China（No. 50775217，60908022）

摘要/Abstract

摘要：

为了研究氟化钙（CaF2）单晶超精密切削过程中的金刚石刀具磨损及其对切削过程的影响,对CaF2晶体进行了超精密切削实验,系统观测了刀具磨损形貌随切削路程的变化趋势,分析了刀具磨损机理,同时通过分析不同切削路程下切削表面微观形貌和切削力的变化,对刀具磨损与切削模式之间的关系进行了探讨。研究表明,超精密切削CaF2晶体时刀具磨损模式为沟槽磨损和缺口破损,刀具磨损随切削路程的演变过程为后刀面沟槽磨损扩展到前刀面缺口破损,同时相应的切削模式由延性去除转变为脆性去除。该研究结果为大口径CaF2晶体纳米尺度延性域切削提供了技术支持。

关键词:

超精密切削, 刀具磨损, CaF2晶体, 延性域, 金刚石刀具

Abstract:

In order to study the diamond tool wear and its effects on the cutting process in ultra-precision cutting of CaF2,the long distance cutting experiments of CaF2 crystals were carried out.The effects of cutting distance on the micrograph of tool damage were observed systematically,the tool damage mechanism was analyzed, the relation between tool damage and cutting model was discussed through analyzing

the influences of tool damage on the micrograph of machined surface and cutting force. The research findings show that: the tool damage model in ultra-precision cutting of

CaF2 crystals are grooving damage and notch breakage, the development of the tool damage followed with cutting distance is that the tool damage is extended from the grooving damage in flank face to notch breakage in rake face, and the cutting mode is also changed from the ductile mode cutting to brittle mode cutting. The research results supply the technological support for nano-scale ductile mode cutting of large-size CaF2 crystals. 

Key words: ultra-precision cutting, tool damage, CaF2 crystal, ductile mode, diamond tool

中图分类号:

TH161

陈浩锋, 王建敏, 戴一帆, 郑子文, 焦飞飞.

超精密切削氟化钙单晶金刚石刀具磨损研究

[J]. 中国机械工程, 2011, 22(13): 1519-1522,1526.

CHEN Gao-Feng, WANG Jian-Min, DAI Yi-Fan, ZHENG Zi-Wen, JIAO Fei-Fei.

Research on Diamond Tool Wear in Ultra-precision Cutting of CaF2 Crystals

[J]. China Mechanical Engineering, 2011, 22(13): 1519-1522,1526.

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