Accurate tool calibration for robotic conformance grinding system
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摘要: 针对目前机器人修形磨削系统中接触轮姿态标定精度低影响磨削精度的问题,提出了一种实验测量的工具坐标系标定方法,姿态标定精度达0.05°.首先总结了通用静态标定法的不足之处,提出了新标定方法的构思并且理论证明了该方法的正确性.介绍了实验系统的组成,并在机器人砂带磨削系统上做了磨削实验.采集了磨削处的实验数据,分析实验数据,获得接触轮的实际偏转角,把偏转角补偿到磨削路径的工具坐标系上,最后完成了工具坐标系补偿后的重复性实验,证明了该方法的可行性和准确性.Abstract: An experimental grinding tool calibration method was proposed to improve the accuracy of robotic belt grinding system. The accuracy of grinding tool-s horizontal axis calibrated by this new method is 0.05°. If the tool frame has a deflexion from the programmed pose, this deflexion is trigonometrically related to the depth difference in the grinded sample piece. After setting up the experiment system, the testing grinding experiments to magnify the deflexion were made. The experimental data on the grinded path were recorded and analyzed, after the sample piece was grinded completely by the contact wheel. The actual deflexion was obtained and the programmed tool pose was compensated to zero. To verify the accuracy and feasibility of this method, the sample piece was grinded with the compensated zero tool pose two times.
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Key words:
- robotics /
- belt grinding /
- off-line programming /
- tool calibration
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[1] 黄云,朱派龙.砂带磨削原理及其应用[M].重庆:重庆大学出版社, 1993:1-3 Huang Yun, Zhu Pailong. Theory and application of sand belt grinding[M].Chongqing:Chongqing University Press,1993:1-3(in Chinese) [2] 黄云,黄智.砂带磨削的发展及关键技术[J].中国机械工程,2007,18(18):2263-2267 Huang Yun, Huang Zhi. Development and key technologies of abrasive belt grinding[J]. China Mechanical Engineering,2007,18(18):2263-2267(in Chinese) [3] 袁哲俊,王先逵.精密和超精密加工技术[M].北京:机械工业出版社, 1999:64 Yuan Zhejun, Wang Xiankui. Precision and ultra-precision processing technology[M]. Beijing:China Machine Press,1999:64(in Chinese) [4] Sun Y Q. Development of a unified flexible grinding process . Connecticut: Engineering School,University of Connecticut, 2004 [5] Huang H, Gong Z M, Chen X Q, et al. Smart robotic system for 3D profile turbine vane airfoil repair[J].The International Journal of Advanced Manufacturing Technology,2003,21:275-283 [6] Mooring B, Driels M, Roth Z. Fundamentals of manipulator calibration[M].New York:Wiley,1991:329 [7] 宋月娥,吴林,田劲松,等.用于机器人编程的作业标定算法[J].焊接学报, 2006, 23(3):32-36 Song Yue’e, Wu Lin, Tian Jinsong, et al. Task caliration algorithm for robot programming[J]. Welding Journal, 2006,23(3): 32-36(in Chinese) [8] 费业泰.误差理论与数据处理[M].北京:机械工业出版社,1995:34-45 Fei Yetai. Error analysis and data processing[M]. Beijing: China Machine Press,1995:34-45(in Chinese) -
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