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Double-side molding process and die of wheel hub bearing outer ring

A double-sided forming, hub bearing technology, used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc. question

Active Publication Date: 2012-04-25
黄石哈特贝尔精密锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal flow lines of the final product are not ideal
The first process method is the worst, and its disadvantage is that the material utilization rate is low, and the streamlines at the two raceways are all cut off. The second process method is slightly better than the first one, and one side is improved by cold rolling, but The other side is still not good, so neither process can get the best flow lines and the best material utilization

Method used

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  • Double-side molding process and die of wheel hub bearing outer ring
  • Double-side molding process and die of wheel hub bearing outer ring
  • Double-side molding process and die of wheel hub bearing outer ring

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Embodiment Construction

[0020] specific implementation plan

[0021] The structure of the present invention will be further described below in conjunction with the accompanying drawings, but it cannot be construed as a limitation to the present invention, and the remaining unexplained parts of the present invention are consistent with the prior art.

[0022] The double-sided forming process of the outer ring of the first-generation wheel hub bearing, such as image 3 As shown, the following process steps are included:

[0023] 1) Blanking: Design the forging drawing according to the size of the finished part. After designing the thickness of the material core, a fully formed forging volume can be obtained, and then calculate the diameter and length of the bar to ensure that the length-to-diameter ratio of the bar is 0.8-1.2.

[0024] 2) Upsetting: The upsetting diameter is only 0.5-1 mm smaller than the outer diameter of the forging molding.

[0025] 3) Preforming: The mold design of this station i...

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Abstract

The invention relates to a double-side molding process and a die of a wheel hub bearing outer ring, which comprises the following process steps: 1) charging; 2) upsetting; 3) performing; and 4) forming. The forging die comprises a die case, a mobile female die, a die core, a lifting sleeve, a top pin and a female die pad, wherein the mobile female die and the die case are in clearance fit; the die core is fixed in the die case to cooperate with the mobile female die and a punching head to perform forming; the lifting sleeve is arranged between the mobile female die and the die core; the top pin is arranged in the female die pad; the top pin and the female die pad are in clearance fit; and the female die pad is fixed in a machine tool. Compared with the prior art, the process has the advantages of making a forged metal flow line and the working method of a track of finished bearings consistent to a maximum degree, making great contribution to the prolonging of the service life of bearings, solving a common local underfill problem of hot direct extrusion and representing a design mode breaking common rules.

Description

technical field [0001] The invention relates to a double-sided forming process and mold for a first-generation hub bearing outer ring, which is suitable for manufacturing on a high-speed upsetting machine. technical background [0002] The first-generation hub bearing is an important running part of a car. The bearing bears the important task of reducing the frictional resistance when the chassis is running and maintaining the normal driving of the car. If the hub bearing fails, it may cause noise, bearing heating, etc., especially the front wheel is more obvious, which may easily lead to dangerous phenomena such as loss of direction control. Therefore, there are strict requirements on the life and reliability of the bearing. [0003] The bearing is mainly composed of inner ring, steel ball, seal and outer ring. The function of the inner ring is to support and transmit torque, the number is 2; the function of the outer ring is to assemble in the hub, connect the front whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/08B21J13/02
Inventor 石磊
Owner 黄石哈特贝尔精密锻造有限公司
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