1、Determine the processing method of each surface. On the basis of understanding the characteristics of various processing methods and mastering their processing economic accuracy and surface roughness, choose the processing method to ensure processing quality, productivity and economy.
2、Choose the positioning reference. According to the principle of rough and fine datum selection, reasonably select the positioning datum of each process.
3, the development of the process route. On the basis of the analysis of the part, divide the part rough, semi-finish, finishing stages, and determine the degree of concentration and dispersion of the process, reasonable arrangement of the processing order of the surface, so as to develop the machining process route of the part. For the more complex parts, you can first consider several options, analysis and comparison, and then choose a more reasonable processing program.
4, determine the machining allowance of each process and process dimensions and their tolerances.
5, the choice of machine tools and tools, clamps, measurement, cutting tools. The choice of machinery and equipment should not only ensure the quality of processing, but also to economic and reasonable. In batch production conditions, generally should use general-purpose machine tools and special fixtures.
6, to determine the technical requirements of the main processes and inspection methods.
7, to determine the cutting amount and time quota for each process. Single piece of small batch production plant, cutting amount more by the operator's own decision, machining process cards are generally not clearly specified. In the batch, especially in the mass production plant, in order to ensure the rationality of production and the rhythm of the balance, it is required to specify the cutting amount, and not arbitrarily altered.
8, fill in the process documentation.