A novel measuring tip for thread functional diameter: error compensation of the effect of lead angle and curvature radius

被引：3

作者：

Qiu, Zurong ^{[1
]}

Wang, Chenglin ^{[1
]}

Su, Zhikun ^{[1
]}

Xue, Jie ^{[1
]}

Li, Xinghua ^{[1
]}

Li, Haopeng ^{[1
]}

机构：

[1] Tianjin Univ, State Key Lab Precis Measuring Technol & Instrume, Tianjin 300072, Peoples R China

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2019年 / 30卷 / 01期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

error compensation; thread; functional diameter; lead angle; curvature radius;

D O I：

10.1088/1361-6501/aaed8d

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To obtain a method for measuring thread functional diameter, a new probe based on the synthetic measurement principle is designed to quantify the practical effect of each parameter in all axial sections. The probing element is an axial slice of a standard thread with a certain thickness; hence, the slice has a determined lead angle and curvature radius. When threads with different diameters are measured by slices, the maximum error caused by the lead angle and curvature radius can approach 99 mu m according to the simulation results. To solve this problem, a measurement error model is established by analyzing the relationship between the contact points of the measuring tip and thread. By simulations and experiments, our results show that most of the effect of lead angle and curvature radius can be compensated. Using six slices with different pitches, a precise detection of 192 kinds of threads is achieved after error compensation within the range of M65-M300.

引用

页数：13