And common machine tool numerical control processing craft route design, the main difference is that the former is not the whole process from blank to the finished product, but only a few process of nc machining process description, CNC precision machining, CNC machining process generally with the whole process of the parts processing process, so need good interface with other process, This is something to pay attention to in the process design. According to the characteristics of cnc precision machining, CNC machining procedures can be divided according to the following methods: 1. To a installation, processing as a process. This method is suitable for processing less content parts, after processing can reach the inspection state.
2. Divide the process by the same cutting tool processing content. Although some precision parts and components for processing surface can be completed in an installation, but considering the program is too long, will be affected by some memory in continuous working time limit, machine tools, such as procedure, work in a period can't end, etc., and the program is too long will increase the difficulty of error and retrieval, therefore in the CNC precision machining, The program should not be too long and the content of each process should not be too much. 4. The process is divided into rough and finish machining. Some precision parts of materials are easy to deform in the processing process, so it is necessary to calibrate the deformation that may occur after rough machining. Generally speaking, where to carry out rough, finish the process, should be separated from the process. The order arrangement shall be considered according to the structure and blank of the parts, as well as the positioning, installation and clamping needs. The order arrangement shall generally be carried out according to the following principles. (1) The processing of the previous process shall not affect the positioning and clamping of the next process, and the intermediate processing of the general machine tool shall also be comprehensively considered; (2) first the inner cavity and then the shape machining; (3) with the same positioning, clamping or with the same tool processing process, the best
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