The tool path refers to the motion trajectory and direction of the tool relative to the workpiece being machined during CNC machining. The reasonable choice of processing route is very important because it is closely related to the machining accuracy and surface quality of the parts. The following points are mainly considered when determining the cutting route:
1) Ensure the machining accuracy requirements of the parts. 2) Convenient numerical calculation and reduced programming workload. 3) Seeking a shorter processing route to reduce empty tool time and improve processing efficiency.
4) Try to reduce the number of program segments as much as possible. 5) To ensure the roughness requirements of the workpiece contour surface after processing, the final contour should be arranged for continuous machining with a subsequent cutting tool.
6) The forward and backward path of the tool (cutting in and out) should also be carefully considered to minimize the occurrence of tool marks at the contour due to sudden changes in cutting force, and to avoid scratching the workpiece by vertically lowering the tool on the contour surface.
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