The order of machining should be based on the structure of the parts and the status of the blank, as well as the need to locate the clamping needs to focus on the rigidity of the work piece is not damaged. The order should generally be based on the following principles:
(1) The machining of the upper working procedure can not influence the positioning and clamping of the lower working procedure, and the general machining process in the middle should also be considered comprehensively.
(2) First internal cavity machining sequence, after the shape machining.
(3) The same positioning, clamping or the same knife machining process is preferably connected to reduce the number of repeat positioning, tool change times and the number of moving platen.
(4) In the same installation in the multi-channel process, should be arranged on the rigid work piece damage to small processes.