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Identification and compensation of the deviations inherent to multi-axis machine tools

多轴机床固有偏差的识别和补偿

基本信息

批准号：
15360066
负责人：
TSUTSUMI Masaomi
金额：
$ 8.13万
依托单位：
National University Corporation Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

This research work has developed two unique methods for identifying geometrical deviations that related to the rotary axes inherent to five axis control machining centers and multi-tasking turning machines, those were typical multi-axis control machine tools, and also the method for correcting the machine coordinate and the NC program based on the identification method.In this research work, it was found that there were 24 structural configurations in the five-axis machine tools according to the websites and catalogues of the machine tool builders in the world. The number of the configurations is less than the number expected.Then, the method for determining the deviations those existed in the five axis control machine tools was investigated. The measuring methods of the deviations of 5-axis machining centers with a universal spindle head specified in the present standard ISO10791-1 were precisely investigated. The method of measuring the trajectory of the circular interpolation moveme … More nt when three axes including one rotary axis were simultaneously controlled was designed by means of a ball bar. The method of calculating peculiar deviations to the five axis control machining center from the amount of eccentric of trajectory was proposed by using some expressions. It is possible to identify the geometric deviations by using the values of eccentricity of the trajectories measured by the ball bar. In addition, it was proven to be able to obtain highly accurate trajectories since the correction was tried by using the identification values. Moreover, the method of identifying the deviation by using simultaneous four-axis control movement was investigated. Especially, this measuring method is excellent in the point that all the deviations can be identified from two measured trajectories only, although four measurements are necessary in the three-axis control movement. It was clarified that the deviation identified by using this method gives same accurate as the three axis control measurement. Less

本研究针对五轴联动加工中心和多任务车床这两种典型的多轴联动机床，提出了两种独特的与回转轴相关的几何偏差识别方法，以及基于该识别方法的机床坐标和NC程序的修正方法。根据世界机床制造商的网站和目录，发现五轴机床有24种结构配置。在此基础上，研究了五轴联动机床中存在的偏差的确定方法。对现行标准ISO 10791 -1中规定的五轴加工中心误差的测量方法进行了详细的研究。圆弧插补运动轨迹的测量方法 ...更多信息当包括一个旋转轴的三个轴被同时控制时，通过一个滚珠杆来设计NT。提出了由轨迹偏心量计算五轴联动加工中心特殊偏差的方法。通过使用由球杆测量的轨迹的偏心率的值，可以识别几何偏差。此外，由于通过使用识别值尝试了校正，因此证明能够获得高精度的轨迹。此外，还研究了利用四轴联动控制运动识别偏差的方法。特别地，该测量方法的优点在于，尽管在三轴控制运动中需要四次测量，但是仅从两个测量轨迹就可以识别所有偏差。结果表明，用该方法识别的偏差与三轴控制测量的偏差具有相同的精度。少