General process of machining

Update time : 2023-02-02 10:56:00

Craftsmanship refers to the techniques, methods and procedures used to manufacture products.

Mechanical processing is generally divided into cold processing, thermal processing, and special processing. Cold processing includes turning, milling, planing, grinding, pliers, drilling, boring, punching, sawing, etc. Thermal processing can be divided into forging, casting, heat treatment, etc. Special processing generally refers to Electric processing, wire cutting, water jet, laser, 3D printing, etc. use special processing equipment for mechanical processing methods.

Take the basic process of a mechanical product production as an example to illustrate a common machining process, for example, a non-standard bolt needs to be processed:

1. Material selection, selection of forged bars, this process involves forging technology, generally completed in steel mills;
2. Manufacture the blank, and the bar material is very long when purchased, and it is sawed into the size we want according to the demand;
3. Pre-heat treatment, adopting spheroidizing annealing and other methods to eliminate internal stress, improve structure, and improve cutting processing conditions;
4. Mechanical processing, turning the outer diameter to the relevant size, threading or threading with a die set (the thread is a fitter) or grinding thread, milling the hexagonal end or cutting the hexagonal end with wire cutting, and the fitter deburring;
5. Final heat treatment, quenching to improve the surface hardness or surface coating to improve the mechanical properties of the material surface;
6. Inspection, inspect the relevant dimensions, surface quality and internal organization, and find out whether there are defects in the product;
7. Qualified products, qualified products go through relevant procedures such as warehousing.

This is the general process of the processing technology of a part.

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