Dynamic error test method and apparatus of numerical control machine tool

Abstract

The invention provides a dynamic error test method of a numerical control machine tool. The method includes: a data acquisition step, acquiring first data related to the practical position of a cutter location point of the numerical control machine tool and second data related to the offset of a probe of a measuring head from the numerical control machine tool; a data processing step, processing the first data and the second data, restoring the first data and the second data to a theoretical cutter location path in a workpiece coordinate system, and acquiring a practical cutter location path based on the theoretical cutter location path and the second data; and an analysis step, acquiring an error between the theoretical cutter location path and the practical cutter location path through comparison of the theoretical cutter location path and the practical cutter location path, and acquiring a dynamic error of the numerical control machine tool. The invention also discloses a dynamic error test apparatus of the numerical control machine tool, which is used for dynamic error detection of the numerical control machine tool, the measuring head and storage media.

Description

technical field [0001] The invention belongs to the technical field of numerical control machine tools, and more specifically relates to a method and device for checking dynamic errors of numerical control machine tools. Background technique [0002] With the improvement of manufacturing efficiency and precision requirements for CNC machine tools in the manufacturing industry, five-axis machine tools are required to have the dynamic performance of the linkage and cooperation of each servo axis system, and the quality of the dynamic performance will have a significant impact on the quality and processing efficiency of the processed workpiece. [0003] In order to verify whether the dynamic performance of the five-axis machine tool meets the requirements, it is necessary to test the dynamic accuracy of the five-axis machine tool. Scholars at home and abroad have done a lot of research on the inspection of the dynamic accuracy of five-axis machine tools, but there is still a la...

AI Technical Summary

Problems solved by technology

This largely results in a waste of resources such as time, blank materials, and electric energy, and this method is not convenient for the regular inspection of the dynamic accuracy of the five-axis machine tool and the correction and adjustment of the dynamic performance.

This method also needs to use three-coordinate measuring instrument and other instruments when verifying whether the processed "S" parts are qualified, which increases the cost of dynamic accuracy inspection of five-axis machine tools.

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