如何简单、迅速地获取坐标测量机的机构误差,并对其进行软件修正,是近年来国内外学者研究的一个重要课题。本文研究了三坐标测量机的误差修正理论及用三维检具检测测量机误差的方法,提出了空间球检具晶格移位法误差检测原理和多项式拟合的误差函数获得方法,并将其应用于一台中型的坐标测量机的误差修正中,收到了满意的效果。 How to get the mechanism error of coordinate measuring machine simply and quickly and to correct it by software is an important subject studied by scholars at home and abroad in recent years. In this paper, the error correction theory of CMM and the method of measuring the error of CMM with 3D gage are researched. The error detection principle of the lattice displacement method and the error function obtaining method of polynomial fitting are proposed. Used in a medium-sized coordinate measuring machine error correction, received satisfactory results.