Calibration of location errors of rotary axes on five-axis machine tools by on-the-machine measurement using a touch-trigger probe
Calibration of location errors of rotary axes on five-axis machine tools by on-the-machine measurement using a touch-trigger probe
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DOI：
10.1016/j.ijmachtools.2012.03.002
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发表时间：
2012-07
影响因子：
14
通讯作者：
S. Ibaraki;Takeyuki Iritani;T. Matsushita
中科院分区：
文献类型：
--
作者：
S. Ibaraki;Takeyuki Iritani;T. Matsushita
作为提高五轴加工中心运动精度的基础，对五轴运动学中的基本误差源之一--旋转轴位置误差进行准确、高效、自动化的标定是十分重要的。本文提出了一种利用安装在机床主轴上的接触式触发测头在机测量试件来标定回转轴线位置误差的方案。与最新版本的ISO标准（ISO/DIS 10791-1：2012和ISO/DIS 10791-6：2012）中描述的使用精密球体和线性位移传感器或球杆的传统校准方案相比，所提出的方法更适合于高效和自动化的位置误差校准过程，而不需要有经验的操作员执行测试。定位误差校准的不确定度分析也提出了一个特别的兴趣，在线性轴的误差运动的影响。给出了实验验证。
As a basis to improve the motion accuracy of five-axis machining centers, it is important to develop a methodology to calibrate location errors of rotary axes, one of the fundamental error sources in the five-axis kinematics, in an accurate, efficient, and automated manner. This paper proposes a scheme to calibrate location errors of rotary axes by on-the-machine measurement of a test piece by using a contact-type touch-trigger probe installed on the machine's spindle. Compared to conventional calibration schemes described in latest revision of ISO standards (ISO/DIS 10791-1:2012 and ISO/DIS 10791-6:2012), where a precision sphere and a linear displacement sensor or the ball bar are used, the proposed approach is more suitable to efficient and automated calibration procedure of location errors, without requiring an experienced operator to perform the tests. The uncertainty analysis of the calibration of location errors is also presented with a particular interest in the influence of error motions of linear axes. The experimental demonstration is presented.