The arrangement of the processing sequence should be considered according to the structure and blank condition of the parts, as well as the need for positioning clamping, and the focus is on the rigidity of the workpiece is not destroyed. The order should generally be carried out according to the following principles:

(1) The processing of the previous process can not affect the positioning and clamping of the next process, and the processing process of the general machine tool interspersed in the middle should also be comprehensively considered.

(2) The internal cavity machining sequence is advanced before the external machining process.

(3) It is best to connect the processes processed with the same positioning, clamping method or the same knife to reduce the number of repeated positioning, the number of tool changes and the number of moving presses.

(4) Multiple processes carried out in the same installation should first arrange the process with little rigid damage to the workpiece.