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Basic principles of precision machining

2022-11-25

Machine production process refers to all the whole process of making products from raw materials (or semi-finished products processing). For machine production includes the delivery and preservation of raw materials, preparation for production, manufacture of blanks, processing and heat treatment of parts, assembly, and commissioning of products, painting and packaging, etc. The content of the production process is very broad, modern enterprises use the principles and methods of systems engineering to organize production and guide production, the production process is seen as a production system with import and export.

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In the production process, the whole process of changing the shape, size, location and nature of the production item to a finished or semi-finished product is called the whole process. It is the main part of the production process. The whole process is divided into casting, forging, stamping, welding, machining, assembly and other processes. The whole process of machinery manufacturing generally refers to the sum of the whole process of machining parts and the whole process of assembling machines, while the other whole processes are called the whole process of auxiliary tools, such as transportation, storage, power supply, equipment maintenance, etc. Process process is a combination of one or more sequential steps, a step by having more than one process combination.

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Precision machining is a type of process that uses processing machinery to change the size or function of a workpiece. According to the temperature condition of the workpiece to be machined, it can be divided into cold machining and hot machining. Generally speaking, processing at room temperature without causing chemical or physical phase transformation of the workpiece is called cold processing. Generally speaking, processing at a temperature greater or less than room temperature will cause chemical or physical transformation of the workpiece, which is called hot processing. Cold machining is divided into cutting and pressure machining according to the difference of processing methods. Thermal processing is more common in heat treatment, forging, casting and welding.

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