37 years of experience talk about the grinding process of high-speed angular contact ceramic ball bearings-

In the production process of high-speed angular contact ceramic ball bearings, grinding production and processing is the most complicated process, so for grinding production and processing, one of the key processes in the production process of high-speed angular contact ceramic ball bearings, how to choose and apply new technologies Doing a good job in the whole grinding process with high precision, high efficiency and low cost is the basic task of grinding and manufacturing. Next, Sanli briefly introduces the difficult problems and solutions of the bearing grinding process: 1. Difficult problems in the grinding process of high-speed ceramic angular contact ball bearings; (1) The problem of bearing accuracy; It is formed by the comprehensiveness of cutting process indicators. Therefore, the reasonable determination of the grinding coordinates of the CNC lathe and the adjustment of the coordinate position of the grinding wheel are also key parameters to improve the quality of the workpiece. (2) The problem of bearing burnout; In the process of bearing grinding, if the technological indicators are not scientific or the dimensional accuracy of the rough blank is not well grasped, there will be a situation of grinding burnout. The important factors caused by this kind of grinding burnout are the low angular velocity of the grinding wheel, The cutting speed is low, the surface of the grinding wheel and the product workpiece has a large reverse bearing force, etc. (3) The problem of bearing cracks; when the main grinding parameters are not selected scientifically, the grinding surface of the middle hole seating surface will be cracked or micro-cracked after grinding, especially the cracks in the pressure chamber inside will cause cavitation on the front edge of the seat, causing The fatigue limit of the bearing is reduced. 2. High-speed angular contact ceramic ball bearing grinding process solution (1) The clamping form of the bearing; during the bearing grinding production and processing, the manufacturing process angle of the large inner hole after calibration accuracy is precisely positioned, which can avoid the grinding of the middle hole seat surface Radial flutter. (2) The cutting capacity of the bearing; the drilling capacity is an important parameter to ensure high-efficiency and high-precision bearing grinding, and the fine polishing capacity is generally maintained at the μm level. (3) Selection of bearing molds; Contemporary grinding technology adopts fast grinding to ensure that the grinding debris is not easy to stick to the grinding wheel during the grinding process and maintain good self-sharpening. (4) The grinding speed ratio of the bearing; the rotation speed ratio of the product workpiece is related to the diameter of the grinding surface of the bearing. Let the grinding surface cause wavy lines, expand the residual stress on the surface, and the high speed will also cause burns on the grinding surface. Only when the torque is accurate can the rotation be stable, 37 years of professional production of high-speed angular contact ceramic ball bearings! (http://)

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