The feed path on a CNC lathe refers to the path traversed by the cutting tool from the tool setting point (or the machine tool's fixed origin) until it returns to that point and the machining program ends. This includes the cutting path and non-cutting idle travel paths such as tool entry and exit.
The feed path for finishing is basically along the contour of the part. Therefore, the focus of determining the feed path is to determine the feed paths for roughing and idle travel.
In CNC lathe machining, the determination of the machining path generally follows these principles:
① It should ensure the accuracy and surface roughness of the machined workpiece.
② Minimize the machining path, reduce idle travel time, and improve machining efficiency.
③ Simplify the numerical calculation workload and the machining program as much as possible.
④ For some repetitive programs, subroutines should be used.
