What is the principle of the cutting order in machining?
④ first rough after the first rough processing, after finishing
③ the first main after the first processing of the main surface, and then processing the secondary surface.
② first after the first hole after the first processing plane, after processing holes.
That is, the first should be used as a refined reference surface, and then processed to the basis of precision positioning for the processing of other surfaces.
In the arrangement of mechanical cutting process, should be based on the processing stage of the division, the choice of benchmarks and the surface to be processed to decide, generally should follow the following principles:
