【正文】 接補償法 這種方法要求精確地測出機床空間矢量誤差，補償精度要求越高，測量精度和測量的點數(shù)就要求越多，但要詳盡地知 道測量空間任意點的誤差是不可能的，利用插值的方法求得補償點的誤差分量，進(jìn)行誤差修正，該種方法要求建立和補償時一致的絕對測量坐標(biāo)系。 Hooman 則運用三維線性（ LVTDS）測量裝置 ,得到機床空間 27 個點的誤差（分辨率 m，重復(fù)精度1μ m），進(jìn)行了類似的工作。 相對誤差分解、合成補償法 大多數(shù)誤差測量方法只是得到了相對的綜合誤差，據(jù)此可以從中分解得到機床的單項誤差。 Christopher 運用激光球桿儀（ LBB），在 30 分鐘內(nèi)獲得了機床的誤差信息，建立了誤差模型 , 在 9 個月的時間間隔內(nèi) ,對誤差補償結(jié)果進(jìn)行了 5 次評價 ,結(jié)果表明，通過軟件誤差補償?shù)姆椒梢蕴岣邫C床的精度，并可保持精度在較長時間內(nèi)不變。相對誤差分解、合成補償法，測量方法相對簡單，一次測量可獲得整個圓周的數(shù)據(jù)信息，同時可以滿足機床精度的檢測和機床評價。 在國內(nèi)，許多研究機構(gòu)與高校近幾年也進(jìn)行了機床誤差補償方面的研究。 1998 年上海交通大學(xué)的楊建國進(jìn)行了車床熱誤差補償?shù)难芯俊? 參考文獻(xiàn) ： [1] 李書和 .數(shù)控機床誤差補償?shù)难芯?[D]. 天津：天津大學(xué) ,1996. [2] 廖平蘭 .機床加工過程宗合誤差實時補償技術(shù) [J].機械工程學(xué)報 ,1992. [3] 李書和，張奕群，楊世民，張國雄 .多軸機床空間誤差的一般模型 [J]. 儀器儀表學(xué)報， 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 pensation method of applications, in order to further upgrade the softprecision machine tool basis. Key words geometric error of CNC machine tool error pensation There are two ways to improve machine tool accuracy. One is by improving the part design, manufacture and assembly levels to eliminate a possible source of error is called error Prevention Act (error prevention). This method is mainly driven by processing the one hand, the constraints of precision machine tools, improving the quality of the other ponents leading to expansion of processing costs, resulting in the use of this method is subject to certain restrictions. Another called the error pensation method (error pensation), usually by modifying the machine39。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 manufacturing industry to contribute to. References: [1] LI Shu, and. CNC machine tool error pensation of [D]. Tianjin: Tianjin University, 1996. [2] Liao Lan. Machining process were corealtime error pensation technique [J]. Journal of Mechanical Engineering, 1992. [3] LI Shu and, Zhang Yiqun, Yang Shimin, Guoxiong. Multiaxis machine tool of the general model of space errors [J]. Journal of Scientific Instrument, 1997. [4] JianGuo Yang, BingYuan Xue. CNC Turning Center Thermal error mode analysis and robust modeling [J]. China Mechanical Engineering, 1998. 。 (2) errors due to machine parts and bodies as well as in the use of the deformation measurement sensors caused the error occurred. outside interference error of As the environment and changes in operating conditions caused by random error. Other errors Such as the programming and operation of the error caused by the error. In accordance with the above error characteristics and the nature of the error, grouped into two broad categories: the systematic error and random error. Systematic error of CNC machine tools is the inherent error of machine tools, with repeatability. CNC machine tool geometric error is the main ponent also has repeatability. Use of the features to them offline measur