Machining process is a kind of  process through changing the shape size or performance of the work pieces via mechanical equipment. According to different processing methods, it can be divided into cutting and pressure processing.
usually classified into three categories:
1.  One-piece production: separately produce in different structures and sizes  with little repetition.
2.  Mass-production: Same products produced in batches yearly, the manufacturing process has certain repeatability.
3.  Mass production in large scale: large numbers production and most of the workplaces often in repeating process. Which needs the machines in processes are digital display milling machine, digital display forming grinder, digital display lathe, electric spark machine, universal grinder, processing center, laser welding, medium wire-walking, fast wire-walking, slow wire-walking, cylindrical grinder, internal grinder, precision lathe, etc. Precision parts needs such machinery which is  precious in the cutting , milling, planning, grinding and other processing, can process various irregular shape parts, the accuracy rate can reach in 2 μ.

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