上海交通大学学报

上海交通大学学报（自然版）

• 机械工程 • 上一篇    下一篇

展成法球面磨床的几何误差补偿

许开州，魏臣隽，胡德金   

  1. （上海交通大学 机械与动力工程学院， 上海 200240）
  • 收稿日期:2009-08-10 修回日期:1900-01-01 出版日期:2010-04-29 发布日期:2010-04-29

Geometrical Error Compensation in Propagated Spherical Surface Grinding System

XU Kaizhou，WEI Chenjuan，HU Dejin   

  1. (School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2009-08-10 Revised:1900-01-01 Online:2010-04-29 Published:2010-04-29

摘要： 利用多体系统运动学理论，通过变换矩阵方程，分析了系统中的移动副误差、转动副误差和正交误差原理.针对展成法球面磨削系统的结构与加工方式的独特性，提出了虚拟磨削点，建立了球面磨削系统的空间误差模型，并通过激光干涉仪进行了几何误差的测量.利用软补偿方法进行实验验证的结果表明，经过几何误差补偿后的球面加工精度有显著改善.

关键词: 展成法, 几何误差补偿, 虚拟磨削点

Abstract: Kinematics theory of a multibody system was used to analyze translational joint error, rotational joint error and quadrature error in the spherical grinding system. This paper proposed a virtual grinding point method based on the feature of the process, and the feasibility as well as effectiveness of this method were also demonstrated. A volumetric error model of the grinding system was built up, and the corresponding value of the geometrical error was measured through a laser interferometer. Finally, a software compensation method was employed to validate the model. The experimental results show that the spherical surface grinding precision is significantly improved by geometrical error compensation.

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