摘要：针对偏心圆弧球壳类零件检测难题，本文提出了通过平移坐标系的方法，解决了相切偏心短圆弧的准确测量问题。将此方法应用于由偏心短圆弧旋转形成的球壳类零件内外球面检测中，实现了该类零件的准确测量。应用结果显示，该测量方法测量准确，可以有效地解决相切偏心圆弧检测评价困难的问题。

关键词：偏心圆；短圆弧；内外球面；坐标旋转

中图分类号：TG806；TH124文献标志码：ADOI：10.3969/j.issn.1000-7008.2021.07.022

Entering Constraint Coordinate Measuring Machine Method of 

Eccentric Transition Arc Based on Coordinate Rotation

Wang Tao，Yang Linlin，Lei Tiancai，Meng Yutang，Wang Guoqi

Abstract:The detection of eccentric circular arc spherical shell parts has always been a big problem in the industry.In this paper，a method of translating coordinate system is proposed to solve the accurate measurement problem of tangent eccentric short arc.This method is applied to the inner spherical surface detection of spherical shell parts formed by eccentric short arc rotation.The accurate measurement of these parts is realized.The application shows that the measurement method is accurate and can effectively solve the problem of difficult detection and evaluation of tangent eccentric arc.

Keywords:eccentric circle；short arc；inner sphere；coordinate rotation；coordinate measuring machine