The bearing production process: raw materials – inner and outer ring processing, steel ball or roller processing, cage (stamping or solid) processing – bearing assembly – finished bearing.
In the bearing production process, the most critical are the following links.
Forging link is an important bearing production process to ensure the reliability and life of the bearing, raw materials after forging, forming bearing rings blank. At the same time, the organization of the raw material becomes more dense and linear, which can improve the reliability and service life of the bearing. In addition, the forging process will directly affect the utilization rate of raw materials, thus having an impact on production costs.
Heat treatment link is forging, turning bearing rings after high temperature treatment, it directly affects the bearing rings in the uniformity of carburization, can improve the wear resistance and hardness of the bearing, but also affect the reliability and life of the bearing an important link.
After heat treatment of the bearing collar also need to implement grinding, it is an important link to ensure the accuracy of the bearing. After the grinding process, the production process of bearing rings is basically completed.
Bearing inner and outer ring process: bar – forging – turning – heat treatment – grinding – super finishing – final inspection of parts – rust prevention into storage
The main production equipment includes: cold rolling machine, automatic ball bearing internal grinding machine, quenching line, annealing furnace, press, CNC lathe, bearing grinding machine, internal groove grinding machine, external groove grinding machine, high precision horizontal shaft circular surface grinding machine, CNC milling machine, centerless grinding machine, high precision through grinding centerless grinding machine, precision groove super finishing research machine, internal surface CNC grinding machine, CNC reciprocating double end grinding machine, high temperature and high speed bearing testing machine, heat treatment production line and quality testing equipment.
Due to the type of rolling bearing, structure type, tolerance level, technical requirements, materials and batch of different, its basic production process is not exactly the same.
1 ring processing: bearing inner ring and outer ring processing according to the raw materials or blank form and different, which can be divided into the following three processes before turning, the entire process: bar or tube material (some bars need to be forged and annealed, normalized) —- turning —- heat treatment —- grinding —- fine research or polishing —- parts final inspection —- antirust – — into the warehouse —- (to be combined set assembly)
2. The processing of steel balls, steel ball processing also varies according to the state of the raw material, which can be divided into the following three processes before thwarting or light ball, and the process before heat treatment, and can be divided into the following two types of processes, the whole process is: bar or wire cold punching (some bars also need to punch the ring belt and annealing after cold punching) —- thwarting, rough grinding, soft grinding or light ball —- heat treatment —- hard grinding – — fine grinding —- fine research or grinding —- final inspection grouping —- antirust, packaging —- into storage 〈to be combined set assembly〉.
3. The processing of rollers The processing of rollers varies according to the raw materials, of which the process before heat treatment can be divided into the following two, the whole process is: bar turning or wire cold upsetting after the string ring belt and soft grinding —- heat treatment —- string soft point —- rough grinding OD —- rough grinding end face —- final grinding end face —- fine grinding OD —- final grinding OD —- final inspection Grouping —- antirust, packaging —- into storage (to be assembled).
(1) plate → shear → punching → stamping forming → shaping and finishing → pickling or shot blasting or string light → final inspection → rust prevention, packaging → storage (to be assembled)
(2) solid cage processing: solid cage processing, depending on the raw materials or bad and different, which can be divided into the following four types of blank before turning, the entire process is: bar, pipe material, forgings, castings —- inside diameter, outside diameter, end face, chamfering —- drilling (or drawing holes, boring) —- pickling —- final inspection —- antirust, packaging – -into the warehouse 〈to be combined set assembly〉.
Rolling bearing parts such as inner ring, outer ring, rolling body and cage, etc., after passing the inspection, into the assembly shop for assembly, the process is as follows:
Parts demagnetization, cleaning → inside, outside the roller (groove) channel size grouping selection → together with the set → check clearance → riveted cage → final inspection → demagnetization, cleaning → antirust, packaging → into the finished product library (boxing, shipping).
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