Error vector modeling method for rotating shaft position deviation

Abstract

The invention discloses an error vector modeling method for rotating shaft position deviation. The method comprises the following steps: S1, defining and analyzing the influence of the position deviation on the movement of the rotating shaft according to the movement property and the position deviation of the rotating shaft; S2, establishing a rotating shaft motion spinor expression according to aspinor definition in an exponential product theory; S3, constructing A-axis, B-axis and C-axis ideal index motion matrixes according to the motion properties of different rotating shafts; S4, constructing an actual exponential motion matrix under the influence of the position deviation of the A axis, the B axis and the C axis by adopting an exponential product theory according to the position deviation distribution of different rotating shafts; S5, constructing position deviation transformation matrixes of different rotating shafts according to the relation among the motion axis error matrix,the ideal motion matrix and the actual motion matrix; S6, comparing the position deviation transformation matrixes of the different rotating shafts with the error matrix of the basic geometric erroritem of the motion shaft to obtain the position deviation influence of the different rotating shafts; and S7, substituting the position deviation influences of different rotating shafts, and constructing error vectors of the position deviations of the different rotating shafts.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to an error vector modeling method for the position deviation of a rotating shaft. Background technique [0002] Machine tools have been widely used in various manufacturing fields. With the development of manufacturing requirements and industrial technology, the requirements for high precision of machines are getting higher and higher. The "Made in China 2025" issued by the State Council emphasizes the reliability and precision of cutting-edge technology and equipment of high-end CNC machine tools. High precision has become an inevitable trend in the development of high-end CNC machine tools. Among the many factors affecting the machining accuracy of machine tools, geometric errors and thermal errors are the largest error sources of high-end CNC machine tools, accounting for about 60% of the total manufacturing errors. Modeling and compensation o...

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Problems solved by technology

[0004] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art and provide an error vector modeling method for the position deviation of the rotating shaft to solve the problem that the linear error obtained in the prior art does not reflect the influence of the position deviation on the accuracy of the rotating shaft

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