基于线结构光的滚动直线导轨型面精密测量与场景化算法研究

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关键词：线结构光；直线导轨；型面检测；点云算法

中图分类号： TH161+ .24 文献标识码：A

doi：10.37188/OPE.20263404.0536 CSTR：32169.14.OPE.20263404.0536

Research on precise measurement and scene-based algorithm for rolling linear guide rail profile based on line structured light

LI Jinfeng 1，2 ， MA Zirui 1，2，3 ， WANG Haitong"， ZHANG Zeyang1.3

（1. Yanqi Lake Institute of Basic Manufacturing Technology Research Co. ，Ltd.， Beijing100044，China;

2. Key Laboratory ofMachine Tool Functional Parts Performance Test and Eoaluation， StateAdministration forMarketRegulation，BeijinglOoO44，China;

3. College ofMechanical and Electronic Control Engineering，Beijing Jiaotong University， Beijing 100044，China） * Corresponding author， E -mail： htwang@bjtu. edu. cn

Abstract：Inorder to improve the manufacturing accuracy of the complex curved surface with small arc characteristics in the roling linear guide pair，and ensure the service performance of the rolling functional components such as stiffness and friction torque，a precise and eficient measurement method of the rolling linear guide surface based on line structured light was proposed in this paper. Aiming at the unique scene of the guiderail profile，a set of point cloud fiting system of the improved scene algorithm was constructed，including the adaptive voxel filtering algorithm weighted by the racewayarea，the PCA-K neighbor hood inflection point identification algorithm with multi-feature fusion and the improved RANSAC arc fitting algorithm with adaptive radius constraint.Through the comparison experiment with the three-coordinate measuring machine and the image measuring instrument，it is verified that the measurement accuracy of the measurement system is better than 5μm ，which reaches the SP level measurement standard，and can realize the fullcontour detection of the guide rail surface.The measurement efciency is more than 15 times higher than that of the three-coordinate measuring machine，which provides theoretical support and technical scheme for the high-precision and efcient detection of the rolling linear guide rail profile.

Key words ： line structured light; linear guide rail; surface detection; point cloud algorithm

1引言

以滚珠丝杠副、滚动直线导轨副为代表的滚动功能部件，是保障数控机床系统刚性和加工精度保持性的核心部件，也是军民两用高端装备的关键基础部件[1-3]。（剩余14135字）