Imported bearing processing characteristics and matters needing attention

Processing features of imported bearings of bearings used in different areas is crucial, so many vendors will also be looking for what is about the processing features of imported bearings, secondly, imported bearing processing production note is also a very important step, therefore, the understanding of Chinese bearing network according to import bearings, tell everyone involved in the production of imported bearing machining features and related matters needing attention. Imported bearing processing characteristics 1, forming bearing parts of the surface of the work are rotary forming surface, suitable for molding in processing. Such as forged ring groove rolling mill and car, is the forming tool or prevent plate processing. For the most part 2, precision processing imported bearing parts surface after grinding, grinding size and geometric accuracy are in microns, especially ring raceway and rolling body of higher precision, superfinishing or grinding processing. 3, high bearing parts processing various process requirements, the production process will be more. General bearing production need 20 ~ 40 working procedure, much more than 70. In addition, the vast majority of imported bearings are standardized products, the same type of bearing demand is very big, in order to improve the productivity, reduce costs, ensure the quality and the widespread adoption of new technology, improve the level of mechanization and automation, bearing is generally according to the bearing types and varieties for mass production, even can establish special automatic line or lines of production. Imported bearing processing problems that should pay attention to ( 1) , the rules of the measurement area to import bearing inner diameter or outer diameter measurement, domestic regulations leave the ring on the southern side of one of the biggest chamfering coordinates within the area of measurement, and foreign many regulations to leave the ring twice in two end chamfering coordinates within the area of measurement. ( 2) , when the temperature measurement of the measurement of environmental temperature is 20 ℃, the bearings, gauge block, standard parts and the temperature of the measuring instrument must be the same, the above them on the same piece of metal plate method can fast achieve the necessary temperature balance, or take a few hours or even days to reach the balance. Abroad in order to get the correct measurements, rely on the measurement of mechanization to avoid hand contact with these things, or wear insulated gloves. ( 3) , the provisions of the measuring instrument used in the measurement instrument must be calibrated, and have to adapt themselves to the test bearing precision and magnification ratio. ( 4) , the provisions of the benchmark in the comparative measurement method for measurement of bearing size tolerance, dosage of rules or standard for comparison measuring the size of the benchmark, the gauge block must conform to the standard JB/T1078 'gage block' regulation, standard parts must comply with the provisions of the competent department of factory. ( 5) , the measuring head radius and the pressure of the inventory in order to reduce the measurement error, must be within the scope of the possible, makes every effort to reduce inventory pressure measuring force, and increasing the probe radius of curvature. ( 6) , allowable error of measurement principle, measurement error may be allowed under 10% of the tolerance. When the inner and outer diameter of the bearing measurement, measurement and head of radius of curvature can be used in reference to select. ( 7) , the provisions of the measuring datum for general bearing, take ring not print face to measurement datum, for angular contact ball bearings and tapered roller bearings, take take datum of thrust load end. ( 8) , measuring the mandrel used in measurement of imported bearing Kia, Kea, and Sd project, such as hole for cylindrical bearings, taper of the taper spindle used stipulation for 1/5000 l / 10000 in principle, for uranium bearing, taper hole taper basic rules of the taper spindle used is 1/12. ( 9) , measuring load regulation when measuring Kia, Kea and Sia, Sea project, such as need to impose necessary to measure the load, the rolling body contact with the ring in a normal position, in order to obtain stable measured value. 【 Warm prompt. 【 The bearing network] Some information from the Internet, and strive to secure timely, accurate, aims to deliver more information, does not represent our views to its approval or responsibility for their authenticity. If this net reprint information involves the issues such as copyright, please contact with this net. Tel: 0571 - 81630205. Tags: production and processing