Research on Curved Surface Tool Path Planning Based on Improved Equal Residual Height Method
Tool path planning is the core of complex surface NC machining technology.It will have a great impact on the quali-ty and efficiency of surface machining.Equal residual height method is a tool path planning method widely used in recent years,but it still has the phenomenon of tool path redundancy when planning curved surfaces with special geometry such as hyperbolic parabo-loid.The curve along the direction of maximum principal curvature is selected as the initial path to improve the equal residual height method.Instead of selecting the long boundary of the surface as the initial path in the traditional method,the machining step size and row spacing are calculated,and then the tool path covering the whole complex surface is generated.Comparing the tool paths generated by the two methods,and the experimental results show that the improved equal residual height method can effectively solve the tool path redundancy and improve the machining efficiency.
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