外文翻譯--數(shù)控機(jī)床幾何誤差及其補(bǔ)償方法研究-數(shù)控設(shè)計(jì)-閱讀頁(yè)
2025-06-06 06:44本頁(yè)面
【正文】 able apparatus, the method also limits the further application and development. relative error deposition, synthetic Compensation Act Most of error of measurement methods have been only a relatively prehensive error, which can be machine deposition single error. Further use of synthetic methods of error of machine tool error pensation is feasible. At present, domestic and international research in this area have also made some progress. Michigan University of the United States in 2020, Professor Jun Ni guidance Chen Guiquan doctoral made such attempt, the use of clubs Miriam (TBB) of threeaxis CNC machine tools at different temperatures were measured geometric error, the establishment of a rapid temperature forecasts and error pensation model, carried out error pensation. Christopher uses laser clubs Miriam (LBB), in 30 minutes of the machine tool error information, the establishment of error model, in the 9month time interval, the error pensation results were 5 times the evaluation results show that through software error pensation method can improve the accuracy of machine tools, and to maintain the accuracy of the same for a long time. Error synthesis requires the axis machine tools to detect the original error, more mature measurement method is laser interferometer, measurement and high accuracy. Use dualfrequency laser interferometer measurement error, take a long time to debug the level of the operator requirements. More important is the measurement error of the high environmental requirements, monly used in the coordinate measuring machine testing, not suitable for the production operation at the scene. Relative error deposition, synthetic Compensation Act, a relatively simple measurement method, a measurement of access to the entire circumference of the data and information, at the same time meet the machine accuracy of testing and evaluation tools. At present, there are many error deposition method, as it would vary from machine tools, it is difficult to find a suitable mathematical model of generic error deposition, and the results of measuring the impact of the same original error term can not be deposed, but also made it difficult to promote the application. Error in direct pensation law, the general standard parts in order to control access to space vector error, direct pensation, less intermediate links, closer to the practical situation of machine tools. However, substantial amount of information requires a different standard parts, it is difficult to achieve, so that the accuracy of the pensation is China, many research institutions and colleges and universities in recent years have also been machine error pensation research. 1986 Beijing Machine Tool Research Institute launched a machine tool thermal error pensation for research and coordinate measuring machine pensation study. Tianjin University in 1997 and carried out Li machine error pensation of thermal error modeling and pensation study. Tianjin University in 1998 Liu Youwu using multibody system, such as the establishment of machine tool error model, given the geometric error of 22 lines, 14 lines, 9ray laser interferometer measurement method, in 1999 they also CNC machine tool error pensation a prehensive study, and achieved gratifying results. 1998 Yang Jianguo of the Shanghai Jiaotong University conducted a lathe thermal error pensation study. 19962020 in 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, as well as cutting force based on online identification of intelligent adaptive control research, has yielded some results. To sum up: for error pensation of CNC machine tools, error measurement is the key, error model is the foundation. Through error pensation can effectively improve the accuracy of machine tools, to enhance the level of China
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