【導讀】機床精度的軟升級打下基礎(chǔ)。一種是通過提高零件設(shè)計、制造和裝配的水平來消。除可能的誤差源，稱為誤差防止法。使用受到一定限制。研究表明，幾何誤差和由溫度引起的誤差約占機床總體誤差的70%，其中幾何。的綜合國力都具有重大意義。所引起的機床運動誤差，是數(shù)控機床幾何誤差產(chǎn)生的主要原因。切削負荷造成工藝系統(tǒng)變形所導致的誤差?？赡苄月淙氩环€(wěn)定區(qū)域，從而激起強烈的顫振。導致加工工件的表面質(zhì)量惡化和幾。由于環(huán)境和運行工況的變化所引起的隨機誤差。上面的誤差可按照誤差的特點和性質(zhì)，歸為兩大類：即系統(tǒng)誤差和隨機誤差。差性質(zhì)沒有要求，能夠同時對機床的隨機誤差和系統(tǒng)誤差進行補償。系統(tǒng)誤差補償是用相應(yīng)的儀器預。要求機床的穩(wěn)定性要好，保證機床誤差的確定性，以便于修正，經(jīng)補償。迄今為止，國內(nèi)外對系統(tǒng)誤差的補償方法有很多，可分為。Renishaw的DBB系統(tǒng)進行了檢驗，證明機床精度得以提升。致的絕對測量坐標系。

　　

【正文】 is area at home and abroad also made some progress. In 2021 the United States the guidance of Prof. Jun Ni University of Michigan doctoral candidate Chen Guiquan made such attempts, the use of club instrument (TBB) on threeaxis CNC machine tool geometric errors at different temperatures were measured to establish a rapid temperature prediction and error pensation model, carried out error pensation. Christopher club using laser instrument (LBB), within 30 minutes of machine tools error message error model was established in 9month intervals, the error pensation results of the five evaluations, results show that the software error pensation method can improve the accuracy of machine tools, and can maintain the same accuracy over an extended period. Error synthesis, require measure of all machine axes of the original error, more mature measurements are laser interferometer to measure with high precision. Using dualfrequency laser interferometer for error measurement, the need for a long time for the operator demands a high debugging level. More important is the error of measurement of environmental requirements high, monly used in coordinate measuring machine testing, not suitable for production of field operations. Relative error deposition, synthesis Compensation Act, a relatively simple measurement method, a measurement of the data and information available to the entire circumference, while the accuracy of machine tools to meet the testing and evaluation tools. At present there are many error deposition method, due to machine varied, it is difficult to find a suitable mathematical model of the mon error deposition, and the impact on the measurement results the same as the original error term can not be broken down, it is hard to promote. Error of the direct pensation method, the general standard parts as control access to space vector error, for direct pensation, less the intermediate links, the situation is closer to a practical machine. However, the amount of information require different access to a large number of standard parts, difficult to achieve, so that there are limits to pensation precision. In China, many research institutions and universities also carried out in recent years, machine error pensation research. 1986 Beijing Research Institute of Machine Tool Machine Tool Thermal Error Compensation Research and Compensation of Coordinate Measuring Machine. Shu Li Tianjin University in 1997, and etc. error pensation of machine tool thermal error modeling and pensation study. Liu, Tianjin University in 1998 Youwu multibody system such as the establishment of a machine error model is presented geometrical error of 22 lines, 14 lines, 9line laser interferometer measurement method, in 1999 they also error pensation of CNC machine tools were a prehensive study has yielded gratifying results. 1998 Shanghai Jiaotong University Yang Jianguo carried out a lathe thermal error pensation research. 1996 to 2021 at the National Natural Science Foundation and the National 863 projects with the support of Huazhong University of Science and Technology carried out the geometric error pensation of CNC machine tools and cutting forcebased identification of intelligent adaptive control of online research has yielded some results. In summary: for NC machine tool error pensation, the error measurement is the key, the error model is the foundation. By error pensation, can effectively improve the accuracy of machine tools, in order to enhance the level of China39。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.