摘要
针对长纵深管状物测量中存在的精确定心难度大、测试准确度低、自动化程度不高等问题,采用CMOS高精度激光位移传感器和步进电机,设计一种管状物内轮廓测量系统,该系统无需中心定位装置即可对管孔进行非接触测量。提出非定心条件下管孔半径的计算模型,可准确找到被测管孔的圆心;通过对电机步距角的细分,单次单截面整周扫描管件内膛,最终能够获得多达6 000条半径,同时显示出截面轮廓图形。该文提出的方法为精确测量管状物内径提供一种新思路,设计的测量系统可为管型部件磨损和蚀化等情况提供准确可靠的判定依据,从而实现管孔类部件的寿命预测。
With regard to the problems of great difficulty in precise centering,low test precision and low degree of automation in the measurement of long and deep tube,a tubular inner contour measurement system is designed by adopting CMOS high precision laser displacement sensors and stepper motors,which can achieve non-contact measurement of the tube hole with no need of the centering device.The calculation model of tube hole radius under non-centering conditions is also proposed,which can find the center of the measured tube hole accurately.Based on the subdivision of the motor step angle and the single-time and single-section 360°scan for inner bore of tube,over 6 000 radiuses are obtained finally and the section profile graphics can be displayed at the same time.The proposed method has provided a new idea for the accurate measurement of inner diameter of the tube and the designed measurement system can provide accurate and reliable judgment basis for the wear and corrosion of the tubular parts,so as to re-alize the service life prediction of the tube hole parts.
作者
朱建杰
郑雨昊
曹营修
甘霖
于杨
ZHU Jianjie;ZHENG Yuhao;CAO Yingxiu;GAN Lin;YU Yang(Department of Artillery Engineering,Shijiazhuang Campus of Army Engineering University,Shijiazhuang 050003,China;The 54th Research Institute of CETC,Shijiazhuang 050081,China)
出处
《中国测试》
CAS
北大核心
2018年第4期86-90,共5页
China Measurement & Test
基金
国防科研试验项目(装后[2013]367)
关键词
非定心测量
激光三角法
管孔内径测量
内轮廓检测
non-centering measurement
laser triangulation
tube bore diameter measurement
inner contour measurement
