Nowadays, there are many manufacturers of precision bearings. Domestic precision bearing manufacturers and foreign precision bearing manufacturers have their own advantages and disadvantages. As consumers, how should we choose precision bearing manufacturers? The editor has 35 years of industry experience, from the following three From the angle of analysis, what kind of conditions should precision bearing manufacturers have and how should our consumers choose precision bearing manufacturers? 1. Precision bearing manufacturers need very professional equipment; (1) Apply high-precision, reliable and high-stability CNC lathes; for example, the core and last production and processing process in the manufacture of bearing rings is grinding. The equipment used by precision bearing manufacturers is mainly special CNC grinding machines and ultra-deep processing CNC lathes. The geometric structure of some types of bearing throwing rings is very simple, and the accuracy requirements are not high. Some bearing manufacturers can choose PLC economical and practical CNC machine tools; some types of angular contact ball bearings have higher requirements for throwing rings. convexity'. Then our bearing manufacturers should use general-purpose or high-end CNC machine tools, use fast high-speed electric spindles for inner surface grinding, and use high-bending rigidity sound pressure sand wheel spindle bearings for outer surface grinding, so that they can be ground quickly; ( 2) Apply semi-closed-loop control and closed-loop control servo control system; use a good operating system to perform precise micro-cutting, and the resolution of the cutting screen can be imagined to be 0.25μm or 0.1μm, and its own precise positioning can be repeated The precision can reach 1 μ m or as high as 0.5 μ m; the AC servo motor is used to drive and manipulate the grinding wheel dresser, reduce the grinding wheel dressing distance, and improve the grinding wheel dressing quality; (3) Apply high precision and bending stiffness And wear-resistant ball screw and slide rail and other movable components; (4) Use a bed with stable timeliness and good vibration-absorbing effect; precision bearing manufacturers should use a bed with sufficient timeliness stability and vibration-absorbing effect Compared with high-quality bed bodies, higher-precision CNC grinding machines need to use granite bed bodies with strong vibration attenuation capabilities and relatively low thermal expansion coefficients. (5) Use better diamond saw blades and CBN grinding wheel blades; 2. Precision bearing manufacturers have very high requirements for accuracy and consistency; for angular contact ball bearings, in addition to the differences in raw materials and heat treatment processes, Accuracy and related problems are embodied in the grinding of parts, especially the consistency of precision and precision in mass production of precision bearing manufacturers. For example, P4 or more bearing throwing rings have a large difference in processing accuracy. The one-time solution compliance rate of a precision bearing manufacturer is generally about 80%. And the matching rate is 60%. Some types of bearings (such as tapered roller bearings for wind turbine shafts) can also maintain quality above P4. 3. Other core technologies and countermeasures that precision bearing manufacturers should choose; (1) Precision bearing manufacturers should reduce the grinding capacity according to forging molding, deep processing or high-precision cold rolling, and fully carry out additional work in the middle of each process Quenching and cold violence to remove grinding stress and prevent defects such as grinding burns and cracks caused by excessive cutting speed to improve processing accuracy and surface quality. (2) Precision bearing manufacturers should pay attention to improving the production level of key parts such as turning bodies and ball bearings. Especially for high-precision cylindrical rollers and tapered rollers, automatic production lines are applied. High-precision rollers must be completely smooth and crisp. (3) Precision bearing manufacturers should pay attention to the processing link. Strictly construct or renovate the environmental equipment of the production and processing space in accordance with the requirements of temperature control, constant humidity, vibration reduction and cleaning. (4) Precision bearing manufacturers should fully embody the characteristics of 'grasp one inheritance' in the production and manufacturing of high-precision parts, improve the technical training and practical experience accumulation of the staff, strictly enforce the production process and process organization discipline, and strengthen the quality Guarantee the system, make 'software' and 'hardware' consistent, and make excellent hardware show better efficiency. As a precision bearing manufacturer with 35 years of experience, it uses high-nitrogen bearing steel raw materials, bainite quenching process, low residual austenite, high speed and long life; more than 600 special measuring tools for various bearings and more than 180 professional processing equipment Taiwan to ensure product quality before leaving the factory. Our R&D team has 20 years of experience and can solve various difficult technical problems! (/35nzcx.html)
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