第6期 2016年6月
组合机床与自动化加工技术
ModularMachineTool&AutomaticManufacturingTechnique
文章编号：10012265(2016)06-002604
D0I:10.13462/j. cnki. mmtamt.2016.06.007
复杂曲面研抛加工材料去除廓形建模研究
田凤杰”，李振国”陈洪玉”，高强”
No.6 Jun.2016
（1.沈阳理工大学机械工程学院，沈阳110159；2.山东工业职业学院机电工程系，山东淄博 256414)
摘要：为了研究复杂曲面工件研抛加工时的去除量，建立了复杂曲面工件移动研抛表面材料去除廉形的预测模型。利用圆形赫兹接触理论对球形磨头和复杂曲面工件的接触压强分布进行分析建模，同时对球形磨头研抛区域的相对线速度分布进行理论推导，利用微元积分原理和移动材料去除指数建立了移动研抛表面材料去除廊形的理论方程并用MATLAB软件对材料去除廊形的理论方程进行了仿真。结果表明材料去除深度与法向正压力、磨头转速、研抛倾角成正比，与进给速度成反比；廊形宽度与法向正压力成正比，磨头转速、研抛倾角、进给速度不影响廉形宽度；研抛偏角对去除深度和廉形宽度的影响可以忽略不计。
关键词：超精密加工；复杂曲面；移动研抛；材料去除廊形
中图分类号：TH122;TG506
文献标识码：A
Research on the Modeling of the Material Removal Profile of Complex Curved Surface Polishing
TIANFeng-jie",LI Zhen-guo',CHEN Hong-yu",GAO Qiang
(1. School of Mechanical Engineering, Shenyang Ligong University, Shenyang 110159,China;2. Department of Mechanical Engineering,Shandong Vocational College of Industry, Zibo Shandong 256414,China)
Abstract: The velocity-dwell-mode polishing surface of the material removal profile prediction model is es-tanlished to research the removal of the complex curved surface in the polishing process. Assuming that the contact between the spherical polishing head and complex curved surface parts is the circular Hertzian con-tact, the distribution of contact pressure is analyzed, and the relative linear velocity distribution of the spheri-cal polishing head region is theoretically deduced and the theoretical equation of the velocity-dwell-mode pol-ishing material removal profile is derived based on the velocity-dwell-mode polishing material removal index and the micro integral principle . The theoretical equation of the material removal profile is simulated by MATLAB software. The results show that the material removal depth is positive proportion to the normal pressure,the rotating speed of the polishing head, polishing obliquity angle and is inverse proportion to feed rate;profile width is positive proportion to the normal pressure,rotating speed of the polishing head, polis-hing obliquity angle, feed rate does not affect the profile width; Effect of polishing deflection angle on the removal depth and profile width of the removal profile is negligible.
Key words: ultra precision machining;complex curved surface; velocity-dwell-mode polishing; material re-moval profile
0引言
研抛加工属于机械加工阶段的最终工序一光整加工，为了获得良好的表面粗糙度和加工精度直接决定产品的加工质量。复杂曲面零件加工总时间的37%~50%被用于光整加工，但这些操作主要还依靠熟练工人的手工操作，造成生产效率低和
收稿日期：2015-06-27；修回日期：2015-08-27
·基金项目：沈阳市科技创新专项资金资助项目（F13-020-2-00）
加工质量不稳定，难以满足低成本、短周期和高质量的现代加工制造要求(1-3)。曲面光整加工的智能化和自动化，作为实现高质、高效、低成本的制造的重要环节，日益受到产业和学术界的重视(49]。在各种自动研抛系统中，主要工艺参数如工具转速、进给速度、法向正压力等直接影响工件的加工质量和效率，如何有效地控制工艺参数，实现在各种条
作者简介：田风杰（1973一），男，河北廊坊人，沈阳理工大学副教授，研究方向为复杂曲面数控加工与超精密加工技术，（E-mail)tianfj@sia.cn。万方数据