Azimuthal rolling track grinding device for magnetic hanging steel ball

Abstract

The invention provides an azimuthal rolling track grinding device for a magnetic hanging steel ball, and relates to machining equipment, in particular to special equipment for rolling track grinding processing of an azimuthal steel ball. The device comprises a connecting body of which the tail end is provided with a connecting hole, and is characterized in that: the side wall at the working end of the connecting body is provided with a magnetic hanging device, of which the inside is provided with permanent magnets; steel balls are matched with the permanent magnets in number and magnetically hung on the permanent magnets; and a compression spring is arranged between the magnetic hanging device and a convex surface on the tail part of the connecting body. In the device, the permanent magnets are used for separating the steel balls and avoiding the falling-off of the steel balls, and the friction force is used for driving the steel balls to roll to grind a rolling track. The device has the advantages that: 1, wearing parts are not adopted, so that the mechanism is not easily damaged; 2, the requirements on the diameter of the steel balls and the working section of the rolling track are not high, and the minimum diameter of the steel balls can be less than 1 mm, so that the device has a wide application range; 3, the steel balls can be conveniently replaced; and 4, the axiality is high in the double-sided grinding operation.

Description

technical field [0001] The invention relates to mechanical processing equipment, in particular to special equipment for rolling and processing angular steel ball raceways. Background technique [0002] Some rolling bearings with functions similar to standard rolling bearings, such as electric bicycle flywheels, middle, front and rear axles, and shafts supported by shaft bowls, are medium and low-speed rotating components. Due to the low price of products, it is impossible to use standard radial, Axial bearings, therefore, the radial and axial parts of this type of product that need to be supported are often designed as steel ball raceways in angular contact, which bear both axial loads and radial loads, and the surface roughness of the raceways is required to be at Ra0 .8~1.6. At present, there are two methods of machining angular contact steel ball raceways: 1. Machining and turning first, and then heat treatment; , final heat treatment. The defect of the first processin...

AI Technical Summary

Problems solved by technology

The defect of the first processing method is that the turning precision is very high, but due to mass production, even if the CNC lathe is used for turning, there will always be tool marks, so abnormal sounds are often generated during the movement

The defect of the second processing method is: since the cage must be used to separate and prevent the steel balls from falling off during the rolling process, the cage must also rotate around the base with the steel balls. During the rotation, the cage and the mounting bolts will produce Friction, friction with steel balls, so the cage is very easy to damage; especially when the angular raceway structure is compact and the diameter of the steel ball is less than 4 mm, the structure and design determine that the thickness of the cage is at most 1 mm, in this case Cages are hardly usable for high-volume industrial production

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