摘要
针对现场大尺寸产品圆度误差指标的测量需求,提出了一种圆度误差的快速评定方法。利用数控加工设备或其它装置获得的点位数据,通过简化的最小二乘法粗找初始圆心,而后通过变步长搜索方法确定满足预设精度的精确圆心。算法逐次提高搜索精度,快速逼近真实圆心位置,可用于大尺寸产品的圆度误差评定。
A rapid evaluation method of the circularity error has been proposed in response to the measurement of the circularity error on large-size products. The general center of the circle is found out by using the simplified least square method(LSM) based on the points gotten from the numerical control equipment or the other devices,then the center satisfing the pre-determined precision is found out through the variable searching steps method. The ideal position of the center will be catched up fast by gradually increasing the searching accuracy. The proposed method could be used on the evaluation of the circularity error of large-size products.
作者
王志坚
甄宏伟
周凯
赵彦广
柳洋
Wang Zhi-jian;Zhen Hong-wei;Zhou Kai;Zhao Yan-guang;Liu Yang(Capital Aerospace Machinery Company, Beijing, 100076;Tianjin Long March Launch Vehicle Manufacturing Company, Tianjin, 300462)
出处
《导弹与航天运载技术》
北大核心
2016年第6期99-102,共4页
Missiles and Space Vehicles
关键词
圆度
最小二乘法
圆心
步长
搜索
Circularity error
Least square method
Center of the circle
Steps
Searching
作者简介
王志坚（1986-），男，工程师，主要研究方向为数字化制造及检测技术
