复杂曲面五轴研抛加工模型的研究  

Research of curved surface five-axis and polishing processing model

作　　者：孙宝玉[1] 田洪东[1] 孙相臣 王宁[1] 

机构地区：[1]长春工业大学机电工程学院,吉林长春130012 [2]吉林省红石国有林管理分局,吉林吉林132423

出　　处：《机电工程》2015年第11期1402-1406,1442,共6页Journal of Mechanical & Electrical Engineering

基　　金：吉林省科技厅重点科技攻关资助项目(20140204061GX)

摘　　要：针对复杂曲面加工的高尺寸精度和高表面质量的要求,基于五轴超精密复杂曲面研抛设备,依据Preston理论,从工件与研抛工具头在工作过程中的相对速度入手,推导出了复杂曲面加工的去除函数模型;根据复杂曲面上每一研抛点的去除量要求,推导出了加工的进给模型;进而根据相邻两点的位置关系,得出了复杂曲面加工过程中的残差,根据残差验证了数控研抛加工过程中加工步长选择的合理性,并通过实验对此进行了验证。研究结果表明,通过采用所建立的模型进行的研抛实验,获得了表面粗糙度Ra<0.04的表面质量,说明了该模型的正确性和可行性,为实现复杂曲面的高效研抛加工提供了有力的理论依据。Aiming at complex surface machining with high dimensional accuracy and high surface quality requirements,based on the five-axis ultra-precision complex surface polishing equipment and Preston theory,the removal function model of complex surface machining was derived according to the relative velocity of the workpiece and polishing tool head in the work process. The feed model was deduced according to the requirements of the removal of every point on the complex surface. Complex surface processing residuals were derived based on the positional relationship of adjacent point. And according to the residual,the resonability of polishing CNC machining step selection process was verified. The model was validated through experiments. The results indicate that the surface roughness of the surface roughness Ra 0. 04 is obtained by using the model which established by polishing experimental. The accuracy and feasibility of the model are illustrated,which provide a strong theoretical basis for the realization of complex surfaces polishing efficiently.

关 键 词：复杂曲面 去除模型 加工模型 残差模型 

分 类 号：TH161[机械工程—机械制造及自动化] TG356.28[金属学及工艺—金属压力加工]