【摘要】 针对提高圆度误差在线检测精度的两个关键问题——主轴回转误差分离和环境噪声消除,提出了一种基于IRM(改进反向法)和小波变换的圆度误差在线检测方法。运用IRM实现在线检测中主轴回转误差与圆度误差的分离;采用基于小波变换的消噪滤波方法,消除车间噪声和高、中频信息的干扰。实验结果表明,在线检测精度基本达到了三坐标机的离线检测精度,平均相对误差4%,重复测量精度基本一致。更多还原

【Abstract】 Aiming at solving two key problems namely main shaft movement error(MSME) separation and the signals’ denoising existing in improving the measurement accuracy of the roundness on-machine measurement,a new roundness on-machine measurement method was proposed.In this method,the improved reverse method(IRM) was introduced to minimize the influence of the MSME on the roundness error.Wavelet transform based denoising technique was applied to separate the noise and the high frequency components from the roundness signals.The experimental results show that the measurement accuracy of the proposed method nearly reaches that of the coordinate measuring machine,the relative error is 4% on average, and the repeatability is nearly the same.更多还原