基于机器视觉的回转体表面微孔数量在机检测方法  

Statistical Method for Micropores Number of Rotary Bodies Based on Machine Vision

作　　者：李秀鑫 程雪峰 王磊[1] 顾菘[1] 龙玲[1] 韩雷 Li Xiuxin;Cheng Xuefeng;Wang Lei;Gu Song;Long Ling;Han Lei(Chengdu Aeronautic Polytechnic,Chengdu 610100,China;不详)

机构地区：[1]成都航空职业技术学院航空装备制造产业学院

出　　处：《工具技术》2024年第4期149-153,共5页Tool Engineering

摘　　要：油滤是液压系统油路中的一个重要零件,油滤上通孔数量是油滤零件质量检测的关键指标之一。由于其尺寸较小,微孔数目大,难以用人工检测的方式进行统计,因此针对数控加工工序后的油滤零件建立了一种回转体零件表面微孔数量统计的在机检测系统,该系统在数控加工后可以直接对加工零件进行在机检测,避免了零件二次装夹产生的加工误差。利用机器视觉技术,提出了一种不需要预先建立匹配模板、通用性较强的回转体零件表面微孔统计方法,可以自适应地统计各种回转体表面微孔数目。其中,扫描线自适应定位和周期估计算法保证了孔数统计的精确度。结果证明,提出的实际孔数标定方法为孔数统计算法的性能评估提供了重要参考依据。The oil filter is an important component in hydraulic system oil circuit,and the number of holes on the filter is one of the key indicators for the quality inspection.Due to its small size and large number of micropores,manual detection is almost impossible.An on machine inspection system is established for counting the number of micropores on the surface of the rotating parts after CNC machining process,avoiding machine errors caused by the secondary clamping.A universal method for counting the number of micropores is proposed.It does not require the establishment of a matching template in advance and can adaptively count the number of micropores on various rotating parts.The high accuracy of hole count statistics is guaranteed by the adaptive positioning of the scanning line and period estimation algorithms.Meanwhile,a practical and feasible method for calibrating the actual number of holes is proposed to provide an important reference for evaluating the performance of hole counting algorithms.

关 键 词：油滤 机器视觉 回转体 微孔 在机检测 

分 类 号：TG806[金属学及工艺—公差测量技术] TH137.85[机械工程—机械制造及自动化]