|本期目录/Table of Contents|

基于激光平行射线簇的在机大孔径自动化测量方法(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2017年2期
页码:
140-144
栏目:
精密测量
出版日期:
2017-03-15

文章信息/Info

Title:
An Automatic Measuring Method for Large Bore Diameter On-machine Inspection Based on Clustered Parallel Ray
文章编号:
1672-6030(2017)02-0140-05
作者:
吴翔宇 王仲 李兴强 吴振刚 付鲁华 曾周末
精密测试技术与仪器国家重点实验室(天津大学), 天津300072
Author(s):
Wu Xiangyu Wang Zhong Li Xingqiang Wu Zhengang Fu Luhua Zeng Zhoumo
State Key Laboratory of Precision Measuring Technology and Instruments (Tianjin University), Tianjin 300072, China
关键词:
内尺寸 激光技术 激光位移传感器 在机测量
Keywords:
inner dimension laser technique laser displacement sensor on-machine measurement
分类号:
TP692.9; TH862
DOI:
10.13494/j.npe.20150120
文献标识码:
A
摘要:
针对工件内尺寸的快速、在机、自动化、精密测量问题,提出一种基于平行射线簇的测量方法.当具有测距功能的射线沿着某一平面平移时,测量射线的平移轨迹就构成了平行射线簇.基于平行射线簇的测量方法,通过平移测量射线而实现测量信息的采集,通过分析测量射线的轨迹数据从而获得目标信息.在此基础上,开发了一种利用激光位移传感器的嵌入式非接触测量头,并对某一内孔直径进行了在机测量.测量时,将测量头置于圆孔正截面的任意位置,经过平移就可以迅速得到被测圆孔的内直径.由于该测量方法属于非接触式测量,因此测量装置可安全、便利地进出被测孔.实验结果显示,圆孔直径的平均测量误差为5.4 μm,多次测量的标准差为1.24 μm.本方法测量过程简单、快速,具有较高的测量精度,为工件内尺寸的在机、快速、自动化、精密测量提供了一种新方法.
Abstract:
To solve the problem of automatic on-machine inner dimension inspection of workpieces with high precision and efficiency, a measuring method based on clustered parallel ray (CPR) is proposed in this paper. CPR forms when a measuring ray moves parallelly in a plane. According to the method proposed, the information of measured plane can be acquired through translating measuring ray, and the expected geometrical parameters can be obtained by analyzing the trajectory data. Based on this method, an embedded non-contact measuring head is developed to measure a circular bore on machine. In measuring process, the measuring head is put in normal section of the measured circular bore and the bore diameter can be measured after translation. Thanks to the non-contact measurement, the measuring head can move into and out of the measured bore safely and conveniently. Experimental results reveal that the method proposed shows an average measuring error of 5.4 μm, and that the standard deviation is 1.24 μm. The method proposed is simple and efficient. Furthermore, it enjoys a high measurement accuracy and provides a new approach to automatic on-machine inner dimension inspection with high precision and efficiency.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期: 2015-12-23. 基金项目: 天津市应用基础与前沿技术研究计划资助项目(14JCYBJC18600);天津市应用基础与前沿技术研究计划重点资助项目(14JCZDJC39700). 作者简介: 吴翔宇(1991—),男,硕士研究生. 通讯作者: 付鲁华,副教授,fuluhua@tju.edu.cn.
更新日期/Last Update: 2017-12-20