摘要
为了解精密球体研磨过程中材料去除的原理,建立了一种基于三体磨损的磨损模型,用于预测材料去除率(MMRR).理论分析、仿真和实验结果表明:磨损中的精密球体材料去除率不仅与外加载荷和速率的过程参数有关,而且与球、研磨料浓度和加工机械的物理性质、几何参数有关.研究还发现:外加非线性负载时,每个球的材料去除与接触面积和磨料划痕有关,并且增加球体滑动对提高材料去除是很重要的.
To understand the material removal mechanism involved in the lapping process of the silicon nitride balls ,a novel model based on three-body abrasion was developed to predict the material remov-al rate （M RR） .According to the theoretic analysis ,simulation and experiments ,it can be seen that the material removal rate of silicon nitride balls during abrasion is connected with not only the process parameters including applied load and velocity ,but also the physical properties and geometry of the ball ,abrasive and tool .It is also found that the nonlinear applied load per ball dependence of M RR is related to the contact area and the indentation of the abrasive ,and it is important to increase the skid-ding of balls for high M RR .
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2014年第2期74-76,90,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50375147
50475119)
关键词
陶瓷
精密球体
三体磨损
磨损模型
材料去除率
silicon nitride
precision balls
three-body abrasion
abrasion model
material removal rate
