Five-axis machine tool geometric error compensation method for improving smoothness of curved surface overall tool path
A technology of geometric error and compensation method, which is applied in computer control, instruments, simulators, etc., to achieve the effect of ensuring texture quality, improving calculation accuracy, and ensuring the quality of curved surface tool paths
Active Publication Date: 2020-06-26
SOUTHWEST JIAOTONG UNIV
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[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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[0049] like figure 1 As shown, the present invention provides a five-axis machine tool geometric error compensation method for improving the smoothness of the overall tool path of the curved surface, which can effectively solve the quality requirements of the overall tool path of the curved surface, and realize the planning of the tool position points of the curved surface and the overall tool path of the curved surface. The technical problem of geometric error compensation, in this embodiment, such as figure 2 As shown, taking the SmartCNC500_DRTD five-axis machine tool to process this workpiece as an example, the geometric error compensation method of the five-axis machine tool for improving the overall tool path smoothness of the curved surface is described. The implementation method is as follows:
[0050] S1. According to the geometric error model of the five-axis machine tool, the swarm intelligence optimization algorithm is used to optimize the tool posture of the plan...
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The invention provides a five-axis machine tool geometric error compensation method for improving smoothness of curved surface overall tool path. The method comprises the following steps: applying a swarm intelligence optimization algorithm to obtain an optimized tool posture and a compensation machining code of a planned tool location point; setting a fairing index redundancy and a fairing algebra allowable value, and setting an i initial value as 1; calculating a fairness index of the ith cutter location point, and judging whether a new cutter location point is calculated or not; obtaining afairing algebra, and judging whether a new cutter location point is optimized or not; optimizing the new cutter location point by applying a swarm intelligence optimization algorithm; inserting the optimized new cutter location point into the optimized cutter location point file, and updating the optimized cutter location point file; and comparing the number n of the cutter location points with i, and if i is greater than n, outputting a compensation processing code file. Through the design, the technical problems of considering the quality requirement of the curved surface integral tool pathand realizing geometric error compensation of the curved surface planning tool location point and the curved surface integral tool path can be effectively solved.
Description
technical field [0001] The invention belongs to the technical field of numerical control machining error compensation, and in particular relates to a geometric error compensation method for a five-axis machine tool for improving the smoothness of the overall tool path 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 a country's advanced manufacturing level. The machining accuracy of five-axis machine tools 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 a cost-effective and important means to improve the precision of five-axis milling. [0003] The existing machine t...
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Login to View More IPC IPC(8): G05B19/41
CPCG05B19/41G05B2219/34083
Inventor 付国强饶勇建陶春谢云鹏鲁彩江高宏力郭亮
Owner SOUTHWEST JIAOTONG UNIV