There are two different principles that can be used to distinguish CNC process, i.e. process set principle and process distribution principle.
(1) Process set principle
The principle of CNC machining process set is that each process contains as many machining contents as possible, so as to reduce the total number of processes. The principle of CNC machining process set is applicable to the machining of workpieces on high-efficiency special equipment and CNC machine tools. The advantages of selecting the principle of process set are: increasing the production efficiency; reducing the number of processes, reducing the process route, simplifying the production plan and production organization; reducing the basic number, the number of operators and the floor area; reducing the number of workpiece clamping, not only ensuring the mutual position accuracy between the processing surfaces, but also reducing the number of clamps and the auxiliary time of clamping workpiece. However, the investment of CNC processing equipment and industrial equipment is large, it is difficult to adjust and maintain the control, and the production planning cycle is long, which is not conducive to the transfer of production.
(2) Distribution principle of CNC process
Process distribution is to distribute the processing of workpieces in more CNC processes, and the processing content of each process is very little. The principle of CNC processing procedure distribution is applicable to simple processing equipment and process equipment. The advantages of selecting the principle of process distribution are: simple operation of processing equipment and process equipment, simple adjustment and maintenance, and easy conversion to production; it is conducive to selecting the correct cutting amount and reducing the maneuvering time. However, the process route is long, the floor area is large, the number of equipment and workers is large, and the processing accuracy is greatly affected by the skill level of the operators.
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