数控加工中激光探头光轴垂直度误差标定方法  

Calibration method of optical axis perpendicularity error of laser probe in nc machining

作　　者：刘建通 黄景德 冯悦 LIU Jiantong;HUANG Jingde;FENG Yue(Zhuhai College of Science and Technology,Zhuhai Guangdong 519041,China)

机构地区：[1]珠海科技学院,广东珠海519041

出　　处：《激光杂志》2024年第3期243-247,共5页Laser Journal

基　　金：广东省高校重点领域专项(No.2020ZDZX2032);珠海科技学院教学质量工程项目(No.ZLGC20220526)。

摘　　要：在数控加工中,由于无法精准地获取激光探头光轴垂直度误差,因此,为了解决这一问题,提出数控加工中激光探头光轴垂直度误差标定方法。通过构建数学模型,确定激光探头光轴的基准平面,并对激光探头光轴的理想垂直度展开计算。对激光探头光轴图像实施二值化去噪操作,并对其展开边界扩展处理。通过Harris算子提取激光探头光轴垂直度特征信息,调整光轴与物面的垂直度,实现激光探头光轴垂直度误差标定。实验结果表明,所提方法对激光探头光轴垂直度误差标定精准度高,误差值保持在-0.5 mm~0.5 mm,表明所提方法的性能好。In NC machining,because the verticality error of the optical axis of the laser probe cannot be accurately obtained,in order to solve this problem,a calibration method for the optical axis perpendicularity error of the laser probe in NC machining is proposed.By building a mathematical model,the reference plane of the optical axis of the laser probe is determined,and the ideal perpendicularity of the optical axis of the laser probe is calculated.The binary denoising operation is performed on the optical axis image of the laser probe,and expand its boundary.The perpendicularity characteristic information of the optical axis of the laser probe is extracted by Harris operator,and the perpendicularity between the optical axis and the object surface is adjusted to achieve the calibration of the perpendicularity error of the optical axis of the laser probe.The experimental results show that the proposed method has high accuracy in calibrating the optical axis perpendicularity error of the laser probe,and the error value is kept at-0.5~0.5 mm,indicating that the proposed method has good performance.

关 键 词：数控加工 误差标定 HARRIS算子 二值化去噪 激光探头光轴垂直度 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TN249[自动化与计算机技术—计算机科学与技术]