A geometric error compensation method for five-axis machine tools for the improvement of overall toolpath smoothness on curved surfaces

Abstract

The invention provides a geometric error compensation method for a five-axis machine tool for improving the smoothness of the overall tool path on a curved surface, including: applying a group intelligence optimization algorithm to obtain an optimized tool posture and a compensation processing code for a planned tool position point; setting the smoothness index redundancy Allowable value of redundancy and fairing algebra, set the initial value of i to 1; calculate the smoothness index of the i-th tool position point, and judge whether to calculate a new tool position point; obtain fairing algebra, and judge whether to optimize the new tool position position; apply the swarm intelligence optimization algorithm to optimize the new tool position point; insert the optimized new tool position point into the optimized tool position point file, and update the optimized tool position point file; set the number of tool position points n Compare with i, if i is greater than n, output the compensation processing code file. Through the above design, the present invention can effectively solve the technical problem of considering the quality requirements of the overall tool path of the curved surface and realizing the geometric error compensation of the planned tool position points on the curved surface and the overall tool path of the curved surface.

Description

technical field [0001] The invention belongs to the technical field of numerical control machining error compensation, and in particular relates to a five-axis machine tool geometric error compensation method for improving the overall smoothness of a curved surface. Background technique [0002] Five-axis machine tools have been widely used in the processing of complex parts in various fields such as aerospace, aviation, navigation, automobiles, and national defense. Five-axis machining has also become one of the important symbols to measure the advanced manufacturing level of a country. The machining accuracy of a five-axis machine tool is affected by many factors, among which geometric error and thermal error are one of the main error sources, accounting for about 60% of the total manufacturing error. Geometric error compensation has become an important and economical means to improve the accuracy of five-axis milling. [0003] The existing machine tool error compensatio...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the five-axis machine tool geometric error compensation method for improving the smoothness of the overall tool path of the curved surface provided by the present invention can effectively solve the quality requirements of the overall tool path of the curved surface, and realize the planning of the tool position point and the surface of the curved surface. Technical Problems of Geometric Error Compensation of Overall Toolpath

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