数控机床空间几何误差测量研究进展

数控机床是衡量国家制造装配业水平的重要标志,数控机床的加工精度是反映其性能和水平的一个关键指标。误差补偿是提高数控机床加工精度的一个主要途径和发展趋势,数控机床空间误差快速、精确测量是进行误差补偿、提高数控机床精度的前提与关键。如何快速准确测量数控机床各种误差成为国内外测量域的一个研究热点和重点,出现了很多不同类型的测量方法和仪器。按测量仪方法及仪器与测量策略这两条主线,对现有数控机床空间几何误差测量方法进行较全面介绍,分析了各种方法的优缺点,讨论了其发展趋势。

Research progress on volumetric geometric error measurement of numerical control (NC) machine tools

Computer numerical control (CNC) machine tool is a key indicator of the level of the country''s manufacturing assembly industry, and its machining accuracy is a key element which reflects the performance and the level of machine tools. Error compensation is one of the main ways and trends to improve the processing accuracy of CNC machine tools. Rapid and accurate measurement of CNC machine volumetric errors is the premise and key of the error compensation and the accuracy improvement of CNC machine tools. How to rapidly and accurately measure all kinds of errors of machine tools has become a research hotspot and focus in the measurement field at home and abroad. Currently, there are many kinds of measuring methods and measuring instruments in this field. Focusing on the measuring instrument and method, as well as the measurement strategy, this work summarizes volumetric geometric errors measurement methods and instruments for CNC machine tools. The principle, pros and cons of them are anaylized and the trends in the fields are discussed.