Non-contact measurement method of coaxiality for the compound gear shaft composed of bevel gear and spline
Non-contact measurement method of coaxiality for the compound gear shaft composed of bevel gear and spline
复制标题
DOI：
10.1016/j.measurement.2020.108453
复制
发表时间：
2021-01
期刊：
影响因子：
5.6
通讯作者：
Chai Zhong;Lu Yonghua;Xiaoyan Li;Gang Cai;Jie Tan;Ye Zhibin-
中科院分区：
文献类型：
--
作者：
Chai Zhong;Lu Yonghua;Xiaoyan Li;Gang Cai;Jie Tan;Ye Zhibin-
针对复合齿轮轴同轴度的快速测量，提出了一种非接触光学测量方案。根据激光位移传感器获取的截面数据点，分离出齿轮顶部的数据点，拟合出截面中心。比较了四种圆拟合方法，选择最小二乘圆拟合法计算中心坐标。采用粒子群优化算法拟合样条曲线圆心的最小包容圆柱轴线，并以此作为参考轴线。根据最小包容面积准则，评定了锥齿轮相对于花键的同轴度误差。测试结果表明，该方法可行，测量精度高（精确到0.01 mm）、测量效率高（测量时间<2 min）且具有自动控制能力。10组测量实验的误差范围小于0.065 mm。
Aiming at the rapid coaxiality measurement of compound gear shaft, a non-contact optical measurement scheme is proposed in this paper. According to the data points of cross-section obtained by laser displacement sensors, data points of the gear top are separated to fit the center of the section. Four circle fitting methods are compared, and the least square circle (LSC) is selected to calculate the center coordinates. The particle swarm optimization (PSO) is used to fit the axis of the minimum containment cylinder of the centers of the spline, which is taken as the reference axis. According to the criterion of minimum containment area, the coaxiality error of bevel gear relative to spline is evaluated. The test results show that the proposed method is feasible with high measurement precision (accurate to 0.01 mm), high measurement efficiency (measuring time <2 mins) and automatic control ability. The error range of 10 groups of measurement experiment is less than 0.065 mm.