摘要
为提高结晶器坐标测量机的测量精度,运用齐次坐标变换矩阵,建立测量机测头中心相对于底座参考坐标系的测量模型,并进行误差修正。实验结果表明,该测量模型可以综合修正21项几何误差,使测量机测量精度提高30%~40%。该研究以误差补偿来提高测量精度,使测量精度由注重零部件的制造转向系统稳定性的高精度检测。
Aimed at improving the measurement accuracy of coordinate measuring machine designed for crystallizers,this paper introduces the use of homogeneous coordinate and its coordinate transformation to develop the model of the probe center relative to reference coordination system in the base.The results indicate that the measurement model allows a comprehensive compensation of 21 geometric errors and gives 30%~40% coordinate measuring machine accuracy.The study of increasing accuracy by means of error compensation,which represents an improvement over the traditional design concept,means the change from the improved manufacture precision of work pieces to the improved stability of the system and increased measurement accuracy.
出处
《黑龙江科技学院学报》
CAS
2010年第2期142-145,共4页
Journal of Heilongjiang Institute of Science and Technology
关键词
齐次坐标变换
坐标测量机
误差建模
21项几何误差
transformation of homogeneous coordinate
coordinate measuring machine
error model
21 geometric error
