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 compensation is limited.In China, many research institutions and colleges and universities in recent years have also been machine error compensation research. 1986 Beijing Machine Tool Research Institute launched a machine tool thermal error compensation for research and coordinate measuring machine compensation study. Tianjin University in 1997 and carried out Li machine error compensation of thermal error modeling and compensation study. Tianjin University in 1998 Liu Youwu using multi-body system, such as the establishment of machine tool error model, given the geometric error of 22 lines, 14 lines, 9-ray laser interferometer measurement method, in 1999 they also CNC machine tool error compensation a comprehensive study, and achieved gratifying results. 1998 Yang Jianguo of the Shanghai Jiaotong University conducted a lathe thermal error compensation study. 1996-2000 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 compensation 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 compensation of CNC machine tools, error measurement is the key, error model is the foundation. Through error compensation can effectively improve the accuracy of machine tools, to enhance the level of China's manufacturing industry to contribute.
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