模具制造中多轴联动加工轨迹优化与机械动力学协同研究

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中图分类号：TG76 文献标志码：A

A study on the coordination of multi-axis machining path optimization and mechanical dynamics in mold manufacturing

LU Yanfeng, LIU Juan

(Shaanxi Institute of Mechatronic Techology，Baoji 721OO1， Shaanxi，China)

Abstract:This study focuses on the challenges of multi axis linkage machining trajectory optimization and mechanical dynamics collaborative control in mold manufacturing，with the aim of improving the machining accuracy and surface quality of complex curved molds. By constructing kinematic and dynamic models of a five axis machine tool，a trajectory optimization strategy considering dynamic constraints is designed，and a closed-loop feedback mechanism is established to achieve collaborative control of trajectory optimization and system response. The results show that compared with the traditional G-code path，the method proposed in this article reduces the maximum contour error area by 65% （from 17.3μm to 6.1μm ），the average surface roughness decreases from 1.35μm to 0.85μm ，and the root mean square value of vibration acceleration decreases to 5.4m/s2 ， effectively enhancing machining stability. Research has shown that integrating trajectory optimization with dynamic characteristics can significantly improve the dynamic performance of multi axis CNC systems. This study provides a new theoretical support and practical approach for high-precision mold processing. Key words: multi-axis linkage machining； trajectory optimization； mechanical dynamics; collaborative control; mold manufacturing

0 引言

在现代制造业里，模具的制造精度和效率，对最终产品的质量与生产周期有着直接影响。（剩余11165字）