The arrangement of the machining sequence should be considered according to the structure of the part and the condition of the blank, as well as the need for positioning and clamping, the heavy - point is that the rigidity of the workpiece is not destroyed. The sequence 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, interspersed with general-purpose machine tool processing process should also be considered.
(2) first inside the shape of the cavity plus process, after the shape of the processing process.
(3) to the same positioning, clamping or the same knife processing process is best - the best connection to reduce the number of repeated positioning, the number of times to change the knife and move the platen times.
(4) For multiple processes in the same installation, the process with less rigid damage to the workpiece should be arranged first.