弧面凸轮单侧面加工多重包络原理与刀位控制方法研究  

Multi-envelope Principle and Tool Position Control Method of One-side Machining of Globoidal Indexing Cam

作　　者：尹明富[1] 朱洋 赵镇宏[1] 赵帅 YIN Mingfu;ZHU Yang;ZHAO Zhenhong;ZHAO Shuai(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387

出　　处：《农业机械学报》2021年第5期386-391,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：天津市科学技术委员会项目(14JCTPJC00536);天津市高等学校科技发展基金项目(20041104)。

摘　　要：为提高弧面凸轮廓面加工精度、减小加工过程中刀具误差对凸轮廓面法向误差的影响,分析了弧面凸轮结构特点和现有加工方式存在的问题,提出单侧面加工多重包络原理,并进行了实例仿真计算。利用空间啮合原理和旋转变换矩阵,根据多重包络原理推导出凸轮实际廓面方程,研究了多重包络原理的刀位补偿和刀位控制方法。仿真计算和分析表明,利用单侧面加工多重包络原理可显著减小凸轮廓面法向误差、提高凸轮加工精度。In order to improve the machining accuracy of the cam profile surface and reduce the influence of tool errors on the normal error of the cam profile during the machining process,by analyzing the structural characteristics of the cam profile indexing cam and the existing problems in the machining method,and reducing the extreme difference between the actual profile and the theoretical profile obtained by processing,the principle of multiple envelopes for one-side processing was proposed,The effectiveness of the method was demonstrated and a simulation calculation was carried out.The theoretical research was based on the cam profile equation of the arc surface indexing of the set coordinate system,using spatial meshing principle and rotation transformation matrix,according to the principle of one-side machining and multiple envelopes,the actual contour equation after the machining of the globular indexing cam was deduced and calculated,the tool position compensation and tool control method of one-side machining multiple envelope principle was researched.The problem of tool position control based on the principle of multiple envelopes for one-side machining of a globular indexing cam was solved.Matlab simulation results showed that the method can significantly reduce the normal error of the cam profile surface and improve the machining accuracy of the cam,and it had important practical application value.

关 键 词：弧面分度凸轮 多重包络 刀位补偿 误差计算 

分 类 号：TH132.47[机械工程—机械制造及自动化]