Several small bearing different processing ways

2. Processing characteristics of the hydraulic bearing parts while the structure is simple, but the high requirement of technical conditions, it determines the processing which has the following characteristics: ( 1) Precision machined bearing parts go through most of the surface grinding machining, grinding surface piece weight ratio of the total area and parts, mechanical parts is much larger than normal, and bearing parts cut processing size and geometric accuracy with PM for the unit. Especially the set of circular groove and the wave of the moving body higher after superfinishing or grinding machining precision. ( 2) Multistep process of bearing parts accuracy requirement is high, the production process must be a lot. Set of processing, for example, about 20 - from forging to the assembly 40 working procedure; Cylindrical roller bearing can be up to 74 working procedure; Tapered roller bearings are more than 55 working procedure. ( 3) Forming of bearing forces work are rotary forming on the surface, suitable for forming and workers. For example, tapered roller bearing inner circle straight guard, spherical liquid, grinding, such as forging pressure of raceway and the car is the forming tool or contour plate processing. For machine tool design and adjustment of cutting tool, the second round of the whole aspects has brought a series of problems. 3. Production batch of bearing production is specialized mass production. Most bearings are standardised products of same type bearing requirements. In order to increase productivity, reduce costs, ensure the quality, and widely used new technology, improve the level of mechanization and automation, bearing factory is generally by bearing type and varieties in mass production, by a person with fewer production varieties and every variety of production batch is bigger. For individual types of bearing, if all the year round production is very big, can establish special automatic line or lines of production is also have some bearing production batch is small. For example, oversize bearings, military bearing, etc.