The reasonable design bearing structure in the process of production space

Mechanical design in general to determine the size of the shaft, then allow for the design of the rolling bearing and its surrounding space is limited. Must be within the limit, select the bearing structure and size. The size of the rolling bearing many has been standardized in the series and structure, can select the most suitable bearing structure. Usually small shaft diameter size, choose deep groove ball bearings. Large shaft diameter size, should consider to choose cylindrical roller bearing or tapered roller bearings. When the machine's radial space is limited, then choose light and ultra light series of bearings, such as double row ball bearing or double row roller bearings. When bearing the axial location restricted, choose a narrow or a narrow range of ball bearings, or roller bearings. Standard bearing production process is divided into four steps: forging; Heat treatment; The grinding process monitoring; Identity management. ( 1) : forging in the forging must maintain strict control in the process of processing temperature, cyclic heating and cooling after forging condition, especially to a larger breed ring after finish forging, the temperature is above 700 ℃, the shall not be piled up to put. If improper control overheat in the process of forging, burnt, inside crack reticulate carbide, etc. , will reduce the ferrule of toughness and strength. ( 2) : before heat treatment, heat treatment must be for instrument, thermocouple and other important thermostat close monitoring, to ensure accurate and reliable test data, it is forbidden to take fault operation, the error exceeds bid to timely replacement. The reliability of the monitoring equipment and close monitoring is an important task of the workshop. ( 3) : grinding process monitoring if ring should be full inspection after pickling, picking burns products, severe burns can't repair or repair the unqualified should be scrapped, there is no grinding burn ring into the assembly process, finished goods bearing ring grinding burn and grinding cracks are not allowed to exist, especially the inner ring to taper the mating surfaces shall not be burned. ( 4) : identity management steel storage to the front of the ferrule grinding, after each working procedure must be strictly management, strict GCr15SiMn and GCr15 this two kinds of materials and products made of different materials. Bearing quality is generally high, although the bearing ring is a common standard parts, but his high machining accuracy, processing process is complex, in the next article in the bearing ring super finishing process analysis, we will have a detailed interpretation on bearing ring processing.