外文翻译--数控机床几何误差及其补偿方法研究-数控设计(编辑修改稿)

外文翻译--数控机床几何误差及其补偿方法研究-数控设计(编辑修改稿)内容摘要：

o the hands of unstable region, which aroused strong flutter. Resulting in workpiece surface quality and geometry of the deterioration of the error. Detection System test error Include the following: (1) as a result of measurement sensors and its application in machine tool manufacturing error on the installation of sensor error caused by the error feedback system itself。 (2) as a result of machine tool parts and bodies, as well as in the use of error of deformation lead to sensor error. outside interference error Because of the environment and changes in operating conditions caused by random error. Other errors Such as the programming and operation of an error caused by error. The above error may be in accordance with the characteristics and the nature of the error, into two broad categories: namely, system error and random error. CNC machine tools is the systematic errors inherent machine error, with repeatability. CNC machine tool geometric error is the main ponent of the also repeatability. Use of the properties may be offline measurement can be offline detection openloop pensation technology to be amended and pensation to smaller, precision machine tools to achieve the purpose of error with a random, must be used online detection the closedloop pensation approach to the elimination of random errors on machining precision of the method of measuring instruments, measuring the strict environmental requirements and it would be difficult to promote. 2 Geometric Error Compensation Technology For the different types of error, the implementation of error pensation can be divided into two broad categories. Random error pensation request line measurement, the error detection devices installed in the machine directly, in the machine work, in real time to detect the location of the corresponding error, use this realtime error of processing instructions be amended. Random error pensation of machine tool does not require the nature of the error can be at the same time machine random errors and systematic errors to pensate. However, the need for a plete set of highprecision measuring devices and other related equipment, the cost is too high, not costeffective. [4] conducted online temperature measurement and pensation, failed to achieve practical application. Error pensation system is the appropriate machine tool equipment in advance of the test, that is, through offline measurement to be the location of machine tool working space mand error value, use them as a function of machine tool coordinates. Machine work, according to the coordinates of processing points, out of the corresponding error to be amended. The stability requirements of machine tools is better, and ensure the certainty of machine errors in order to facilitate the amendment, the pensation depends on the accuracy of the machine tool repeatability and environmental conditions change. CNC machine tools under normal circumstances, the repeat accuracy is much higher than its space integrated error, the error pensation system can effectively improve the accuracy of machine tools, and even can improve the accuracy of machine grading. So far, both at home and abroad on the system error pensation methods are many, can be divided into the following methods: Synthesis of single error pensation method The pensation method is based on error of the theoretical basis for the synthetic formula, first of all through direct measurement machine measured the single original error by the error of synthetic formula for calculating pensation point error ponents in order to achieve the error pensation of machine tools. Of coordinate measuring machine for measuring the location of error among Leete, the use of triangular geometry, derived the coordinate axis machine error method, without considering the impact of the corner. Earlier error pensation should be Hocken professors, for Model Moore 5。