1. Determine the processing route. The processing route is the movement trajectory and direction of the tool relative to the part during the processing of the index-controlled machine tool.

1. The processing accuracy and surface roughness requirements should be guaranteed;

2. The processing route should be shortened as much as possible and the tool idle time should be reduced.

3. The relationship between processing route and processing allowance

At present, when CNC lathes have not yet reached widespread use, excessive allowances on the blank should generally be removed, especially It contains the remainder of the forged and cast hard layer and is processed on an ordinary lathe. If it is necessary to use a CNC lathe for processing, you need to pay attention to the flexible arrangement of the program.