Abstract â–¶ Bearing production process bearing specific production process: raw materials - inner and outer ring processing, steel ball or roller processing, cage (stamping or solid) processing - bearing assembly & mda...
â–¶Bearing production process The specific production process of the bearing: raw materials - inner and outer ring processing, steel ball or roller processing, cage (stamping or solid) processing - bearing assembly - bearing finished products.
â–¶ In the bearing production process, the most important are the following:
1 forging link
The forging process is an important part to ensure the reliability and life of the bearing. After the raw materials are forged, the bearing ring blank is formed. At the same time, the organization of the raw materials becomes denser and the flow linearity becomes better, thereby improving bearing reliability and service life. In addition, the quality of the forging process will directly affect the utilization of raw materials, which will have an impact on production costs.
2 heat treatment
In the heat treatment process, the bearing ring after forging and machining is subjected to high temperature treatment, which directly affects the uniformity of carburization in the bearing ring, can improve the wear resistance and hardness of the bearing, and also affect the reliability and life of the bearing. An important part.
3 grinding process
After the heat treatment, the bearing ring also needs to be ground, which is an important part to ensure the accuracy of the bearing. After grinding, the production process of the bearing ring is basically completed.
â–¶ Bearing inner and outer ring process: bar - forging - car processing - heat treatment - grinding processing - super finishing - final inspection of parts - anti-rust storage.
The main production equipment includes: cold heading machine, automatic ball bearing internal grinding machine, quenching line, annealing furnace, press, CNC lathe, bearing grinding machine, internal groove grinding machine, outer groove grinding machine, high precision horizontal axis circular table surface grinding machine, CNC Milling machines, centerless grinding machines, high-precision grinding centerless grinding machines, precision channel superfinishing machines, internal surface CNC grinding machines, CNC reciprocating double-face grinding machines, high-temperature high-speed bearing testing machines, heat treatment production lines and quality testing equipment.
â–¶Basic production process of rolling bearings
Due to the type of rolling bearing, structural type, tolerance class, technical requirements, materials and batches, the basic production process is not exactly the same.
â–¶The processing of the main parts of various bearings:
1 set of ring processing
The processing of the inner and outer rings of the bearing varies according to the raw material or the form of the blank. The process before the machining can be divided into the following three types. The whole processing process is: bar material or pipe material (some bars need to be used) Forging and annealing, normalizing)----Car processing----heat treatment----grinding----finishing or polishing----final inspection of parts----rust prevention---- Warehousing----(to be combined with the package)
2 steel ball processing
The processing of the steel ball also varies according to the state of the raw material. The process before the frustration or the photosphere can be divided into the following three types. The process before the heat treatment can be divided into the following two types, the whole process For: Bar or wire cold-punching (some bars need to be punched and annealed after cold-shrinking)----frustration, rough grinding, soft grinding or light ball----heat treatment----hard grinding- --- Fine grinding----finishing or grinding----final inspection group----rust prevention, packaging----into the warehouse <to be combined with the package>.
3 roller processing
The processing of the roller varies according to the raw materials. The process before the heat treatment can be divided into the following two types. The whole processing process is as follows: the bar processing or the cold rolling of the wire after the string ring and the soft grinding----heat treatment ----String soft point----rough grinding outer diameter----grinding end surface----finishing end surface----fine grinding outer diameter----finishing outer diameter----final Inspection group----rust prevention, packaging----into the warehouse (to be combined with the package).
4 cage processing
The processing of the cage can be divided into the following two categories depending on the design structure and raw materials:
1. Sheet → shear → punching → stamping forming → shaping and finishing → pickling or shot peening or stringing → final inspection → rust prevention, packaging → storage (to be combined)
2. The processing of the solid cage: The processing of the solid cage varies according to the raw materials or the gross damage. The following four types of blanks can be divided into the following processing: The whole processing process is: Bar material, pipe material Forgings, castings----car inner diameter, outer diameter, end face, chamfering----drilling (or pulling holes, boring)----pickling----final inspection----rust prevention , packaging --- into the warehouse <to be combined with the package>.
â–¶ Rolling bearing assembly process
Rolling bearing parts such as inner ring, outer ring, rolling element and cage, etc., after passing the inspection, enter the assembly workshop for assembly, the process is as follows:
Parts demagnetization, cleaning → internal and external rolling <ditch> road size grouping → combination set → check clearance → riveting cage → final inspection → demagnetization, cleaning → rust prevention, packaging → into the finished product warehouse (boxing, shipping ).
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