How much do you know about taper bearing cone?

The raceway shape of the taper bearing cone directly affects the accuracy, performance, and service life of the taper roller bearing. During operation, the tap bearing cone is subjected to external forces, causing elastic deformation in the raceway. This results in significant deformation at both ends of the raceway, leading to stress concentration and bearing failure. The specific form of failure is the symmetric peeling of the edges at both ends of the raceway in a circular direction. The use of convex raceways can effectively improve the stress distribution of the raceway.

1. What is the taper bearing cone raceway convexity? Share the theoretical basis for implementing taper roller bearing raceway convexity, as follows:
The convex machining of the tap bearing cone raceway adopts form cut grinding. In order to obtain a convex raceway surface, the surface of the grinding wheel must be trimmed to a concave working surface. By adjusting the angle between the motion trajectory of the diamond pen on the grinding wheel dresser and the centerline of the grinding wheel axis β Forming the grinding wheel, that is, changing the diamond horizontal dressing wheel to an inclined dressing wheel, and dressing the grinding surface of the grinding wheel from a cylindrical surface formed by the original straight line to a hyperbolic surface formed by the curved line.

2. Analysis of the Processing Technology for Taper Bearing Cone Convexity Raceway
According to user product or technical specifications, the protrusion of the tap bearing cone raceway is generally 3-8 μ M. The rough grinding raceway process has excessive allowance, high grinding wheel consumption, and low machining accuracy, making it unsuitable to grind convex raceways. Preformed grinding can be used; The margin for ultra precision processes is generally 5-10 μ m. Having a small reserve makes it difficult to grind out protruding raceways; The final grinding raceway reserve is generally between 0.04 and 0.10mm, which is more suitable for grinding convex raceways in this process. The selection of grinding wheel should follow the shape of the working surface of the grinding wheel, and choose a hard grinding wheel with good retention and finer grain size.

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