The temperature state and technical regulations of precision machining

In the process of operation, precision machining is a process of using processing machinery to change the shape or performance of the workpiece. Precision machining can be divided into cold processing and cold processing to a certain extent according to the temperature state of the workpiece to be processed. Thermal processing. Generally processing at room temperature, and does not cause chemical or phase changes of the workpiece, it is called cold processing.

Precision machining is generally processed at a temperature higher or lower than normal temperature, which will directly cause the chemical or phase change of the workpiece. It is effectively called hot processing. Cold processing can be divided into cutting according to the difference in processing methods. Processing and pressure processing. Thermal processing commonly includes heat treatment, forging, casting and welding.

Precision machining is mainly the process of changing the shape or function of the workpiece through its various machines. According to the temperature condition of the workpiece to be processed, it is divided into cold processing and hot processing. Among them, the process in mechanical processing refers to the process of some skills that are continuously ended for one or a group of workpieces at a work address. The main feature of forming a process is that the processing target, equipment and operator are not changed, and the content of the process is continuously ended. The skill process can be divided into the following two processes.

The technical regulations of precision machining are one of the technical documents such as the technical process and operation methods of regular parts machining. It is to write a more reasonable technical process and operation methods in a regular manner under specific production conditions Technical documents are used to guide production after approval. Mechanical processing technical regulations usually include the following content: the technical path of the workpiece processing, the specific content of each process and the equipment and technical equipment used, the inspection items and inspection methods of the workpiece, the cutting amount, the time quota, etc.

Fine parts processing technology is to change the shape, scale, relative orientation and nature of the production target on the basis of the process to make it a finished or semi-finished product. It is a specific explanation of each process and each process, for example, As mentioned above, rough machining may include blank making, grinding, etc., and finishing may be divided into turning, fitter, milling machine, and so on.