大粗糙度气缸套内孔直径非接触测量方法研究  

Study on Non-contact Measurement Method of Inner Hole Diameter of Cylinder Liner with Large Roughness

作　　者：刘本学[1] 王庆会[1] LIU Ben-xue;WANG Qing-hui(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou 450000,China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450000

出　　处：《仪表技术与传感器》2021年第1期89-95,共7页Instrument Technique and Sensor

摘　　要：为解决大粗糙度的气缸套实现内孔直径自动化测量这一问题,基于电涡流传感器进行了测量方案的设计,并针对机械结构建立了测量过程的数学模型,得到了由机械结构引起的理论误差公式;通过MATLAB绘制出机械误差的三维曲面图,并得到了机械误差小于0.01 mm时各相关变量的取值范围;通过试验验证了自动测量机与内径百分表之间的测量误差,最小值和最大值误差均处于±0.015 mm内,平均值误差处于±0.01 mm内。该气缸套的内孔直径公差为±0.075 mm,结果表明,自动测量机满足现场使用要求。In order to solve the problem of automatic measurement of inner hole diameter of cylinder liner with large roughness,the measurement scheme was designed based on eddy current sensor,and the mathematical model of measurement process was established for mechanical structure,and the theoretical error formula caused by mechanical structure was obtained.The three dimensions surface diagram of mechanical error was drawn by MATLAB,and the value range of relevant variables was obtained when the mechanical error was less than 0.01 mm.The test verifies the measurement error between the automatic measuring machine and the percentage indicator of inner diameter,the minimum and maximum error are within±0.015 mm,and the mean error is within±0.01 mm.The diameter tolerance of the inner hole of the cylinder liner is±0.075 mm,and the results show that the automatic measuring machine meets the requirements of field use.

关 键 词：大粗糙度 气缸套 自动化测量 电涡流传感器 内孔直径 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]