Four-Point Method in the Measurement and Separation of Spindle Rotation Error
Four-Point Method in the Measurement and Separation of Spindle Rotation Error
复制标题
四点法测量和分离主轴回转误差
DOI：
10.1109/tmech.2020.3002342
复制
发表时间：
2021-02-01
影响因子：
6.4
通讯作者：
Liu, Dan
中科院分区：
文献类型：
--
作者：
Liu, Fei;Liang, Lin;Liu, Dan
对于机床主轴来说，旋转误差是影响加工质量的主要因素，因此许多研究都集中在旋转误差的测量上。本文提出了一种旋转误差的测量和分离方法，通过专用测量系统提取主轴截面中心轨迹并量化旋转误差。其中，专门设计了系统的测量策略来实现旋转误差的测量和分析。当测量不符合小误差条件时，该方法可以降低传感器的噪声水平，提高主轴截面中心轨迹测量的测量精度。当需要精确量化旋转误差和圆度误差时，该方法还可以利用独立的坐标系和传感器支架将它们有效分离。另外，考虑到高温对主轴的影响，该方法可以减少测量过程中热膨胀引起的形状误差，这在工业在线测量中非常重要。最后，理论分析与实验结果吻合良好，也表明它是一种有效的旋转误差测量方法。
For the spindle of machine tool, rotation error is a main factor affecting the machining quality, so many investigations have been focused on the measurement of the rotation error. In this article, a measurement and separation method of the rotation error is proposed to extract the orbit of spindle section center and to quantize the rotation error with a special measurement system. Thereinto, systematic measurement strategy has been especially designed to achieve the measurement and analysis of the rotation error. When the measurement does not conform to the small error conditions, the method can reduce the noise level from sensors and improve measurement accuracy in measuring the orbit of spindle section center. When it is necessary to accurately quantify the rotation error and the roundness error, the method also can effectively separate them with independent coordinate system and sensor bracket. Additionally, considering the effect of high temperature on spindle, the method can reduce the form error caused by thermal expansion in the measurement process, which is very important in industrial online measurement. Finally, the theoretical analyses are shown good agreement with experimental results, and these also reveal that it is an effective measurement method for the rotation error.