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Free forging process, the forging process, the forging press flat forging machine technology and high speed forging machine forging process.
2) cold rolling forming
Cold ring rolling process is a kind of improve the material utilization rate, improve the metal structure compactness, maintain the advanced technique for metallic flow linear, it is a chipless machining method. Theoretically, the cold rolling forming products without turning can be directly used for heat treatment and grinding. At present, the cold rolling technology is mainly applied to the medium and small deep groove ball bearings, the main technological process:
Forging blank (ring) - turning (except the channel) - rolling (ditch and chamfer) two end finishing diameter - polishing
The use of cold ring rolling process and forging forming process, the precision of the product except by the equipment precision influence, but also is influenced by forming mold accuracy.
3) turning molding
In the bearing industry, turning forming the traditional technology is to use special lathe, using centralized process method to complete the molding processing. But because the method used equipment adjust difficulty big, the precision of the machine tool is low, the material utilization rate is low, so the process is to be eliminated.
With the development of science and technology, CNC turning machine and the rapid development of increasingly perfect. At present, some complex shape, high precision products are used more and more widely in NC turning molding technology