Nowadays, there are many kinds of processing on the market, but not all of them are suitable for processing. They are processed by different machines. So we have to choose them according to our actual situation. What are the principles of precision machining and the functions of processing technology?

The basic level considers how to reduce errors and improve accuracy, so the basic principle of selecting the essential surface is:

First, the principle of coincidence of benchmarks. The design datum as far as possible should be chosen as the positioning datum. In order to ensure accuracy, we should pay attention to this principle. In this way, the reference deviation of position error can be avoided.

Second, the principle of unification of benchmarks. We should choose all kinds of surface treatment of the unified positioning datum to ensure the positioning accuracy of each surface as far as possible, and sometimes follow the principle of common datum to process repeatedly.

Third, the principle of self-serving as a benchmark. Some small machined margins and unified finishing processes ensure processing quality and productivity, and precision machined surface itself as a basic level.

I. Major Technical Documents for Guiding Production

Planning and scheduling of production in precision machine shop, operation of workers, quality inspection of parts and calculation of processing cost are all based on process regulations. Processing procedures are often used as a common basis for dealing with problems in production. If dealing with quality accidents, the responsibilities of relevant units and personnel shall be determined according to the process regulations.

2. The Main Basis of Production Preparations

When a workshop wants to produce a new part, it first needs to formulate the machining process rules for the part, and then prepare for production according to the process rules. For example, the analysis and research of the key processes in the processing of new parts, the preparation of knives, clamps and measuring tools, the purchase or manufacture of raw materials and blanks, the purchase of new equipment or the modification of old equipment are carried out according to the process.

3. Basic Technical Documents for New Machinery Manufacturing Plant

When a new batch or batch machine shop is built, the type and quantity of machine tools needed and the layout of the workshop should be determined according to the process regulations, and then the size of the workshop, the configuration of power and hoisting equipment, and the type, technical grade and quantity of workers needed should be determined.