摘要
由于盘式制动器的形位公差精度要求高,使得制动器形位公差的测量过程复杂,难以满足在线测量要求,为此,提出了一种基于激光位移传感器的盘式制动器总成形位公差在线测量系统。根据盘式制动器在线检测的要求,提出了一种可以对制动盘总成平行度和径向、周向厚度差等指标进行快速计算的方法;介绍了该测量机的机械系统、测控系统、软件系统等组成及特点,给出了其系统误差的标定方法;在该测量机上对某型制动盘总成形位公差进行了测试。研究结果表明:该测量机测量的主要检测项目值与三坐标测量机测量的差值均小于1μm,多次测量的标准差小于0.5μm,测量机的测试精度和重复性均能满足制动盘在线测试的要求;同时,与其他接触式位移传感器相比,由于使用了激光位移传感器,该在线测量系统避免了磨损问题的发生。
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 0.5 m,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.
作者
庞茂
孔敏
PANG Mao;KONG Min(School of Mechanical and Energy Engineering,Zhejiang University of Science and Technology,Hangzhou310023,China)
出处
《机电工程》
CAS
北大核心
2021年第12期1558-1563,共6页
Journal of Mechanical & Electrical Engineering
基金
浙江省自然科学基金资助项目(LQY19E050001)。
