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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
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86-571-87239571
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No.9 Gaoguannong,Daxue Road,Hangzhou,China
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meem_contribute@163.com
Abstract: It was difficult to meet the requirement of online measurement because of the high precision of geometric tolerance and the complex measurement process of the automobile brake disc.Aiming at this problem, an online measurement system of geometric tolerance of brake discassembly based on laser displacement sensor was proposed. According to the requirement of online inspection of disc brake, the fast calculation method of the brake disc parallelism, the difference of radial and circumferential thickness were adopted.The composition and characteristics of the test bed were introduced, and the mechanical system, measurement and control system, software and calibration of systematic error were shown in detail. In addition, the geometric tolerance of a type of brake discassembly was measured on this test bed.The results show that the difference between the values of test items measured by this machine and those measured by CMM is less than 1μm. The standard deviation of multiple measurements is less than 0.5m,which provides test support and reference for the development and improvement of this kind of products.For one thing, the accuracy and repeatability of the test bed can meet the requirements of online test of brake disc assembly; for another, the laser displacement sensor avoids the wear problem of other contact displacement sensors.
Key words: brake disc; geometric tolerance; online test;laser displacement sensor
PANG Mao, KONG Min. Online measuring machine for geometric tolerance of disc brake assembly［J］.Journal of Mechanical & Electrical Engineering, 2021,38(12):1558-1563.
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