Manufacture method of curling automobile hub bearing unit

Abstract

The invention belongs to a novel manufacture method of a curling automobile hub bearing unit, belonging to the manufacture method of automobile spare parts and solving the defect that a bearing of a traditional automobile hub bearing unit is uniformly axially fixed in a bearing seat. The manufacture method of the curling automobile hub bearing unit comprises the following steps: firstly, processing the bearing seat into a bearing mounting cavity and a coiling ring; secondly, mounting the bearing in the bearing mounting cavity; and thirdly, using a spiral riveting machine for coiling processing. The spiral riveting machine uses a die with a vertical cross section in a reversed Y shape to vertically axially place the bearing seat on a spiral riveting machine worktable, and the die moves downwards to roll the coiling ring towards an inner cavity of the bearing seat until the coiling ring is tightly stuck to the end surface of the bearing to form a coiling loop; the end surface of the bearing and the coiling loop axially position the bearing, and the inner wall of the bearing mounting cavity radially positions the bearing. The curling automobile hub bearing unit made by adopting the method has high reliability and stability.

Description

technical field [0001] The invention belongs to a method for manufacturing automobile parts, in particular to a method for manufacturing a curling type automobile wheel hub bearing unit. Background technique [0002] The automobile hub bearing unit is mainly composed of a bearing and a bearing seat. The bearing seat is a sleeve with a flange. The bearing is installed in the bearing seat and axially fixed to the bearing. Relying on the cooperation with the circlip, it is difficult to install the circlip in such a fixing method, and the bearing is not fixed firmly, so that the automobile hub bearing unit fixed by this fixing method cannot meet the high reliability required by the automobile industry. For this reason, a new type of automobile hub bearing unit is designed, such as figure 1 , figure 2 As shown, the bearing 1 is installed in the bearing installation cavity of the bearing seat 2, and one end of the outer ring of the bearing is against the inner end surface of th...

AI Technical Summary

Problems solved by technology

[0002] The automobile hub bearing unit is mainly composed of a bearing and a bearing seat. The bearing seat is a sleeve with a flange. The bearing is installed in the bearing seat and axially fixed to the bearing. Relying on the cooperation with the circlip, it is difficult to install the circlip in such a fixing method, and the bearing is not fixed firmly, so that the automobile hub bearing unit fixed by this fixing method cannot meet the high reliability required by the automobile industry

For this reason, a new type of automobile hub bearing unit is designed, such as figure 1 , figure 2 As shown, the bearing 1 is installed in the bearing installation cavity of the bearing seat 2, and one end of the outer ring of the bearing is against the inner end surface of the bearing installation cavity, and a curling ring 3 is set on the end surface of the bearing seat 2 to fix the bearing in the axial direction. The bearings of the automobile hub bearing unit of the fixed method are fixed firmly, and the bearing will not produce radial runout or axial movement in the bearing seat, but when this type of automobile hub bearing unit is curled, it must be ensured that the curling ring and the bearing seat sleeve The cylinder is connected as a whole, the crimping ring can be pressed against the outer ring of the bearing, and the bearing seat sleeve must not be deformed, otherwise the bearing will have radial runout or axial movement in the bearing seat, which makes the automobile hub bearing unit easy Damage, poor reliability and stability

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