中心供液弹性研抛工具的材料去除模型研究
Material Removal Model of Center-inlet Elastic Polishing Tools
金明磊 1金明生 1宋正江 2曾晰 1李燕 1唐璇1
作者信息
- 1. 浙江工业大学机械工程学院,杭州,310023;浙江工业大学特种装备制造与先进加工技术教育部/浙江省重点实验室,杭州,310023
- 2. 浙江工业职业技术学院信息技术中心,绍兴,312000
- 折叠
摘要
为提高计算机控制光学表面(CCOS)成形技术的确定性加工能力,提出了一种中心供液弹性研抛工具(CEPT).针对CEPT的结构特征及与工件接触的应力场模型,研究了贴附金刚石树脂砂纸前后CEPT的径向接触应力分布,发现贴附砂纸后的CEPT有更平稳的径向接触应力分布和更大的接触应力幅值.构建了 CEPT连续进给状态下的接触应力及速度分布函数,结合Preston方程建立了CEPT的材料去除模型.进行了抛光试验及单因素对比试验,获得了 CEPT的材料去除深度分布规律及关键工艺参数与材料去除深度之间的影响关系.试验结果表明,构建的材料去除模型与实际材料去除廓形之间的平均偏差小于10％,可较好地预测CEPT的实际材料去除深度.
Abstract
In order to enhance the deterministic processing capability of computer controlled opti-cal surface(CCOS)forming technology,a center-inlet elastic polishing tool(CEPT)was proposed herein.Based on the structural characteristics of CEPT and the stress field model contacting with the workpieces,the radial contact stress distribution of CEPT before and after attaching diamond resin sandpaper was studied.It is found that after attaching sandpaper,the CEPT has a smoother radial contact stress distribution and a larger contact stress amplitude.Subsequently,the contact stress and velocity distribution functions of CEPT were constructed under continuous feeding conditions,and a material removal model for CEPT was established based on Preston equation.Finally,polishing ex-periments and single factor comparative experiments were conducted to obtain the distribution of ma-terial removal depth and the relationship between key processing parameters and material removal depth of CEPT.The experimental results show that the average deviation between material removal model constructed herein and the actual material removal profile is less than 10％,which may better predict the actual material removal depth of CEPT.
关键词
Preston方程/弹性工具/中心供液/有限元法/材料去除模型Key words
Preston equation/elastic tool/central-inlet/finite element method/material removal model引用本文复制引用
基金项目
浙江省自然科学基金(LY21E050012)
国家自然科学基金(51875526)
出版年
2024
国家科技期刊平台
NSTL
万方数据