"Rolling bearing" production process is complete

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"Rolling bearing" production process is complete

Source: China Bearing Network Time: 2013-12-21

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First, the processing of the primary parts of various bearings:
1. The processing of the ferrule: The processing of the inner ring and the outer ring of the bearing differs depending on the raw material or the blank method. The process before the machining can be divided into the following three types: the whole processing process is: bar or Pipe material (some bars need to be cast and annealed, normalized)----Car processing----heat treatment----grinding----finishing or polishing----final inspection of parts- ---Anti-rust----Warehousing----(To be installed)
2. The processing process of the steel ball, the processing of the steel ball is different depending on the condition of the raw material, and the process before the frustration or the light ball can be divided into the following three types, and the process before the heat treatment can be divided into The following two processes; the whole processing process is: bar or wire cold punching (some bars need to be punched and annealed after cold pressing)----frustration, rough grinding, soft grinding or light ball--- -Heat disposal----hard grinding----fine grinding----finishing or grinding----final inspection group----rust prevention, packaging----into the warehouse <to be assembled).
3. Roller processing The processing of the roller varies depending on the raw material. The process before the heat treatment can be divided into the following two types. The whole processing process is as follows: bar processing or wire cold rolling after the string Belt and soft grinding----heat treatment----string soft point----rough grinding outer diameter----grinding end surface----finishing end surface----fine grinding outer diameter---- Final grinding outer diameter----final inspection group----rust prevention, packaging----into the warehouse (to be installed).
4. The processing progress of the cage process cage is different according to the layout and raw materials, and can be divided into the following two categories:
.1) Sheet → shear → punching → stamping forming → shaping and finishing → pickling or shot peening or stringing → final inspection → rust prevention, packaging → storage (to be installed)
.2) Processing process of the solid cage: The processing of the solid cage varies according to the raw materials or the gross damage. Before the machining, it can be divided into the following four blank types. The whole processing process is: Material, pipe material, forgings, castings----car inner diameter, outer diameter, end face, chamfering----drilling (or pulling holes, boring)----pickling----final inspection-- --Anti-rust, packaging----into the warehouse <to be installed in the set>. Second, the installation process of the rolling bearing: Rolling bearing parts such as inner ring, outer ring, roll body and cage, etc., after passing the inspection, enter the installation Installation in the workshop, the process is as follows: Parts demagnetization, cleaning → internal and external rolling <ditch> road scale grouping → close sets → view clearance → riveting cage → final inspection → demagnetization, removal → rust prevention, packaging → Into the product warehouse (boxing, shipping). The fourth section of the rolling bearing features the rolling bearing compared with the sliding bearing, has the following advantages:
1. The friction coefficient of the rolling bearing is smaller than that of the sliding bearing, and the transmission efficiency is high. Generally, the friction coefficient of the sliding bearing is 0. 08-0. 12, and the friction coefficient of the rolling bearing is only 0. 001-0. 005;
2. The rolling bearing has been standardized, serialized and generalized, suitable for mass production and supply; it is very convenient to use and repair.
3. The tumbling bearing is made of bearing steel and is heat treated. Therefore, the tumbling bearing not only has high mechanical properties and long service life, but also can save the relatively expensive non-ferrous metal used for manufacturing the sliding bearing;
4. The internal clearance of the rolling bearing is very small, and the machining precision of each part is high, so the working precision is high. Together, the rigidity of the bearing can be added by preloading. This is very important for precision machinery;
5. Some tumbling bearings can accept both radial and axial loads, thus simplifying the layout of the bearing support;
6. Because the rolling bearing has high transmission efficiency and low heat generation, it can reduce the consumption of smooth oil, and the smooth protection is more labor-saving;
7. Rolling bearings can be conveniently used on uranium in any orientation in space.
However, all things are divided into two, rolling bearings also have certain defects, the first is:
1. The bearing of the rolling bearing is much smaller than the bearing of the same volume. Therefore, the radial dimension of the rolling bearing is large. Therefore, in the case of accepting a large load and the case where the radial dimension is small and the layout demand is compact, such as the crankshaft of the internal combustion engine. Bearings>, more choices of sliding bearings,
2. The rolling bearing has large oscillation and noise, and the uniqueness is particularly obvious in the later stage of operation. Therefore, in the occasion where the precision is high and the oscillation is not allowed, the rolling bearing is difficult to perform, and the sliding bearing is generally better. The rolling bearing is uniquely sensitive to foreign objects such as metal chips. Once the foreign matter enters the bearing, it will cause intermittent large oscillations and noise, which will also cause early damage. In addition, the rolling bearing may be susceptible to early damage due to metal clip impurities. Sex. Even if there is no early damage, the life of the rolling bearing has a certain limit. In general, the life of the rolling bearing is shorter than that of the sliding bearing.
However, the rolling bearing is superior to the sliding bearing, each has its own advantages, and each has its own suitable application. Therefore, the two cannot be completely replaced with each other, and each of them is carried out in a certain direction, expanding the scope of the individual. However, because of the rolling bearing Outstanding strengths, there is a trend of latecomers. At present, rolling bearings have been developed into the primary support type of machinery, and the use is becoming more and more extensive.
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