摘要：基于一维测头的螺杆转子齿廓测量及数据处理方法，建立转子螺旋面的数学模型，计算齿面测量点的坐标值和单位法矢，提出了转子测量转角的优化算法。根据复杂曲面测量原理及误差补偿理论给出了测量数据的处理方法，得出转子齿廓制造误差，指导了转子的精密磨削制造。现场转子齿廓测量结果验证了该测量方法的可行性与正确性。

关键词：螺杆转子；齿廓误差；一维测头；测头补偿

中图分类号：TG806；TH124；TB92文献标志码：A

Profile Measurement in Screw Rotor by 1D Contact Probe

Cao Xincheng，Yu Jianxun，Deng Shunxian，Yao Bin

Abstract:A measuring method and data processing of profile error of screw rotor based on onedimensional probe is presented and investigated.On the basis of the mathematic model of screw rotor，the coordinate values and normal directional cosine of the measured points are calculated，and the rotation angles of rotor are optimized.The formula of error compensation is established and the real normal directional deviation is obtained by means of the threedimensional measurement principle of complex surface and the theory of error compensation.The measurement comparison experiments of the onedimensional probe in prototype of measuring center with that of the threedimensional probe in P65 have been done.The results of two measurements show a good agreement and prove that the measuring method with the onedimensional probe are accurate and feasible.

Keywords:screw rotor；profile error；onedimensional probe；probe compensation