复杂曲面研抛加工材料去除廓形建模研究  

Research on the Modeling of the Material Removal Profile of Complex Curved Surface Polishing

作　　者：田凤杰[1] 李振国[1] 陈洪玉[2] 高强[1] 

机构地区：[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

出　　处：《组合机床与自动化加工技术》2016年第6期26-29,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：沈阳市科技创新专项资金资助项目(F13-020-2-00)

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廓形的预测模型。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廓形的理论方程并用MATLAB软件对材料去除廓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;廓形宽度与法向正压力成正比,磨头转速、研抛倾角、进给速度不影响廓形宽度;研抛偏角对去除深度和廓形宽度的影响可以忽略不计。The velocity-dwell-mode polishing surface of the material removal profile prediction model is estanlished 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 contact,the distribution of contact pressure is analyzed,and the relative linear velocity distribution of the spherical polishing head region is theoretically deduced and the theoretical equation of the velocity-dwell-mode polishing 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,polishing 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.

关 键 词：超精密加工 复杂曲面 移动研抛 材料去除廓形 

分 类 号：TH122[机械工程—机械设计及理论] TG506[金属学及工艺—金属切削加工及机床]