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【正文】 onsidering the impact of the corner. Earlier for error pensation should be Hocken professor, for the model Moore 5Z (1) of the coordinate measuring machine, 16 hours, measured a large number of points within the working space of the error, in the process taking into account the temperature affected and leastsquares method using the error model parameters were identified. As the machine movement position signal obtained directly from the laser interferometer, taking into account angles and straightness error of the impact of access to more satisfactory results. 1985 G. Zhang successfully carried out on the coordinate measuring machine error pensation. Measuring the flatness error table, in addition to larger values in the table edge, the other less than 1μm, verify the reliability of the rigid body assumption. Use of laser interferometer and measured the level of the 21 errors were, by a linear coordinate transformation for the error synthesis, and implementation of error pensation. Measured results show that XY plane, pensation ago, at all measurement points in the margin of error is greater than 20μm point accounted for 20% in pensation, not more than 20% of the point of error is greater than 2μm, that prec ision can be improved by nearly 10 times. In addition to the error pensation of coordinate measuring machine outside the error pensation of CNC machine tools also achieved some results. In 1977, Professor Schultschik vector methods used to analyze the various ponents of machine tool error and its impact on the geometrical precision, laying the geometric errors of machine tool for further research. Ferreira and his collaborators have conducted a study of the method, the geometric errors of machine tools e to a mon model, the synthesis of singleerror pensation method to make a contribution. J. Ni et al further applied the method of error pensation for online access to a relatively satisfactory result. Chen et al established a 32 error model, in which the excess temperature and 11 is related to the origin of error of machine tool parameters, the pensation of horizontal machining center tests showed that precision can be improved by 10 times. EungSuk Lea et al used the same G. Zhang is almost the same measurement method, the threecoordinate Bridge port milling machine 21 errors of measurement, using the error synthesis reached the error model, the findings of pensated laser interferometer and Renishaw39。s internal heat source and environmental thermal disturbances leading to the structure of machine tool thermal deformation resulting from errors. cutting process system load caused by deformation caused by errors. Including machine tools, cutting tools, workpiece and fixture deformation caused by errors. This type of error is also known as Let the Knife, which the shape distortion caused by processing of parts, especially when machining thinwalled parts or when the use of slender knives, this error even more serious. Vibration Machine Error In cutting, the CNC machine tools and processes because of the flexible process variable, the greater the possibility of running into unstable regions, which aroused a strong flutter. Lead to deterioration of the surface quality of workpiece and geometry of the error. Detection System Test Error (1) Due to the manufacturing error of measurement sensor and its application in the installation of machine tools of measurement error caused by sensor feedback system39。s prehensive national strength are of great significance. 1 a geometric error causes The machine39。 參考文獻(xiàn) ： [1] 李書和 .數(shù)控機(jī)床誤差補(bǔ)償?shù)难芯?[D]. 天津：天津大學(xué) ,1996. [2] 廖平蘭 .機(jī)床加工過程宗合誤差實(shí)時(shí)補(bǔ)償技術(shù) [J].機(jī)械工程學(xué)報(bào) ,1992. [3] 李書和，張奕群，楊世民，張國雄 .多軸機(jī)床空間誤差的一般模型 [J]. 儀器儀表學(xué)報(bào)， 1997. [4] 楊建國，薛秉源 .CNC 車削中心熱誤差模態(tài)分析及魯棒建模 [J].中國機(jī)械工程， 1998. 附件 2：外文原文 CNC machine tool geometric error and its pensation method Abstract The geometric errors of CNC machine tools were the causes of a more detailed analysis of the system error pensation methods are summarized and explained on this basis, various types of error
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