Cutting path planning method, control device and cutting machine

Abstract

The embodiment of the invention provides a cutting path planning method, a control device and a cutting machine, and the method comprises the steps: S1, dividing a to-be-cut workpiece into an internal hole region and an external contour region based on a geometric feature and thermodynamic coupling relationship; s2, planning a cutting sequence by adopting a dynamic priority strategy, preferentially cutting an internal hole area and generating a progressive path; s3, the structural strength index of the remaining materials is calculated in real time in the cutting process, and when it is detected that the strength is lower than a set threshold value, a temporary supporting structure cutting path is inserted; s4, predicting and adjusting the trend of a cutting path based on a real-time temperature field, and inserting a thermal diffusion compensation path between adjacent cutting tracks; and S5, generating a global idle stroke movement path by adopting a multi-objective optimization algorithm, and synchronously optimizing mechanical kinematics parameters and heat influence distribution. According to the method, the problems of thermal deformation and structural instability are relieved while the machining efficiency is guaranteed.

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