作者：祝强, 李少康, 王建华

作者单位：西安工业大学 测试与控制技术研究所, 陕西 西安 710021

关键词：滚刀;渐开线;刃口齿形;大升角

摘要：

多头、大螺旋升角渐开线造型（ZI）滚刀进行刃口齿形测量时存在干涉，从ZI造型滚刀刃口齿形测量特点出发，分析轴截面截形和基圆切平面截形之间的位置关系，给出干涉产生的原因，推导干涉判定条件。针对原测量算法缺陷，提出刃口齿形T向测量算法，通过变换测量截面，算法限定测头的测量深度，有效解决大升角ZI造型滚刀刃口齿形测量的干涉问题。经算法整合，滚刀测量软件可实现刃口齿形测量干涉的预判，实现测量策略自适应选择。实际测试证明：刃口齿形T向测量算法能够顺利完成大升角渐开线造型滚刀刃口齿形的测量，与原测量算法比较，测量结果正确。

Research on cutting edge profile measurement of ZI-type hob with big helical angle
ZHU Qiang, LI Shaokang, WANG Jianhua
Institute of Measurement and Control Technology, Xi'an Technological University, Xi'an 710021, China
Abstract: The interference exists when measuring the cutting edge profile of the involute hob (ZI) with multi head and big helix angle. Based on the characteristics of the edge profile of the involute hob, the position relationship between the profile of the axial section and the profile of the tangent plane section of the base circle is analyzed. The cause of interference in measuring the cutting edge profile is provided. The criterion of interference is deduced. Aiming at the defect of original measurement algorithm, an algorithm in the T-direction of the base tangent plane is proposed. By switching the measuring section, the algorithm limited the measuring depth of the probe. The algorithm effectively solved the interference problem of the cutting edge profile of the ZI-type hob with big helical angle. By integrating the algorithm, the measuring software of hob can realized the pre-judgement of interference in the measurement of the cutting edge profile, and can automatically selected the appropriate measuring strategy. The experiment proves that the T-direction measurement algorithm can successfully realize the measurement of the cutting edge profile of the ZI-type hob with big helical angle. Compared with the original measurement algorithm, the result is correct.
Keywords: hob;involute;cutting edge profile;big helical angle
2019, 45(8):8-13  收稿日期: 2018-09-23;收到修改稿日期: 2018-10-13
基金项目: 国家自然科学基金（51475351）；陕西省教育厅重点实验室研究计划（17JS057）；西安工业大学校长基金项目（XAGDXJJ1006）
作者简介: 祝强(1972-),男,湖北襄阳市人,副教授,博士,主要研究方向为精密测量与控制技术
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