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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>NSK imported bearing one-way bearing ferrule processing process NSK imported bearing one-way bearing ferrule processing process
NSK imported bearing one-way bearing ring processing process; after NSK bearing processing process, we can better understand the function of NSK bearing and more trust the quality of NSK imported bearings. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Although NSK has many types of imported bearings; its layout type, public service level, data selection, and processing methods are different; however, its fundamental production process includes the following contents:
1. NSK one-way bearing parts production-bearing parts view-bearing parts demagnetization, cleaning, rust-bearing-bearing installation-NSK one-way bearing products view-NSK one-way bearing products demagnetization, cleaning-bearing products oil-coated packaging products .
2, the ferrule is an important part of NSK one-way bearing; because of the wide variety of NSK one-way bearings; the ferrule scale, layout, equipment and process methods of different types of NSK bearing one-way bearings are different. Because of the many processing steps of the ferrule, the process is disorderly, and the processing precision is high; therefore, the processing quality of the ferrule has an important influence on the accuracy, service life and function of the NSK one-way bearing.
3, the original data produced by the ferrule is cylindrical bar material or pipe material; currently according to the molding process is different; NSK one-way bearing ring usually has the following several production processes.
1) (bar material) blanking - casting - annealing (or normalizing - turning (cold forming) - heat treatment quenching, tempering - grinding - parts view - demagnetization, removal - submit installation.
2) (bar, tube) cutting - cold head forming - heat treatment quenching, tempering - grinding - parts view - demagnetization, removal - submit installation.
3) (pipe material) blanking - turning forming - heat treatment quenching, tempering - grinding - parts view - demagnetization, cleaning - submit installation 4) (bar material) blanking - cold (warm) kneading - turning - heat treatment Quenching, tempering-grinding-Parts View-Demagnetization, Removal-Submitted Installation Ring Forming Method: Currently in the ferrule processing; the molding methods are mainly the following: casting molding, turning forming, cold rolling expansion and cold ( Warm) kneading molding.
1) Casting and molding can eliminate the defects of metal connotation; improve the metal arrangement; make the metal streamline spread reasonably; the metal tightness is good. The casting molding process is widely used in the NSK one-way bearing forming process; it can complete the inner diameter ~20mm Processing of small products to extra large products with an outer diameter of 5000 mm.
2) Cold heading forming cold rolling process is a kind of leading process method that can improve data utilization rate; improve metal arrangement fineness; adhere to metal flow linearity; it is a chipless processing method. Theoretically; cold heading molding The product can be directly subjected to heat treatment and grinding without turning. At present, the cold rolling process is mainly used for medium and small deep groove NSK one-way bearings; its primary process is: casting blank (ring) - turning (except Channel) - è¾— expansion (ditch and chamfer) full diameter - soft grinding both ends. When using cold rolling expansion process and casting molding process; the accuracy of the product is affected by the accuracy of the equipment; it is also affected by the precision of the forming mold.
3) Turning molding:
In the NSK one-way bearing occupation, the traditional turning forming skill is to use a special lathe; the assembly process is used to complete the forming process. However, because the equipment used in this method is difficult to adjust, the machine tool has low precision, and the data utilization rate is low; filter.
In summary, the direction of the ferrule forming process should be directed toward the high utilization rate of metal materials, high production efficiency, and high molding precision. Therefore, high-speed upsetting skills, cold rolling skills, and numerical control turning forming skills will be obtained. More and more use.
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NSK imported bearing one-way bearing ferrule processing process
Source: China Bearing Network Time: 2014-05-08