作者：祝强¹, 徐瑾²

作者单位：1. 西安工业大学机电工程学院测试与控制技术研究所, 陕西 西安 710021;
2. 西安理工大学工程训练中心, 陕西 西安 710048

关键词：蜗杆;齿形测量;干涉;预判

摘要：

为规避线性蜗杆齿形测量干涉的发生，提出基于蜗杆基本参数与测针参数的干涉预判技术。从ZA、ZI、ZN三种造型线性蜗杆的齿面特征出发，分析齿形测量各阶段测球、测杆与蜗杆轮齿齿面之间的的位置关系，给出不同造型蜗杆发生测量干涉的主要成因。在齿形测量截面内，推导测量起点、齿顶等位置处的齿槽轴向距离表达式，建立三种线性蜗杆的齿形测量干涉预判表达式，实现齿形测量干涉判定。仿真测试表明，文中所提方法能够对线性蜗杆齿形测量中隐含的干涉问题进行预判，规避干涉发生，避免测针发生碰撞、损坏。干涉预判结果能够指导测针的合理选取。

Research on interference pre-judgement technology of linear worm profile measurement
ZHU Qiang, XU Jin
1. Institute of Measurement and Control Technology, School of Mechanical and Electrical Engineering, Xi'an Technological University, Xi'an 710021, China;
2. Engineering Training Center, Xi'an University of Technology, Xi'an 710048, China
Abstract: In order to avoid interference in tooth profile measurement of linear worm, an interference prediction technology based on worm basic parameters and measuring needle parameters is proposed. Starting from the tooth surface characteristics of ZA, ZI and ZN linear worms, the positional relationship between the probe, the rod and the tooth surface of worm at each stage of tooth profile measurement path is analyzed, and the main causes of measurement interference of worm with different shapes are given. In the measured section, the expressions of the axial distance of the tooth groove at the starting point and the addendum circle of the tooth profile measurement are derived. The interference pre-judgment expressions of tooth profile measurement of three kinds of linear worm are established. The interference judgment of tooth profile measurement is realized. The simulation results show that the method proposed in this paper can predict the interference problems hidden in the tooth profile measurement of linear worm. This method can avoid interference and avoid collision and damage of the measuring needle. And the interference prediction results can guide the reasonable selection of the probe.
Keywords: linear worm;tooth profile measurement;interference;pre-judgement
2023, 49(9):27-33  收稿日期: 2021-9-7;收到修改稿日期: 2021-11-12
基金项目: 陕西省教育厅重点实验室研究计划项目(17JS057)
作者简介: 祝强（1972-），男，湖北襄阳市人，副教授，博士，研究方向为精密测量与控制技术。
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