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Bimetallic brake drum structure, brake drum shell and manufacturing method thereof

A brake drum, bimetal technology, applied in the direction of brake type, brake components, brake drum, etc., can solve the problem of not using thin steel plates, and achieve the effect of reducing process cost, ensuring structure, and strengthening strength and rigidity

Active Publication Date: 2021-06-22
张译
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a bimetallic brake drum structure, which can solve the defect that thin steel plates cannot be used in the manufacture of bimetallic brake drums, and at the same time ensure the thickness and strength of the flange of the brake drum and reduce the risk of bimetallic brake drums. drum manufacturing cost

Method used

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  • Bimetallic brake drum structure, brake drum shell and manufacturing method thereof
  • Bimetallic brake drum structure, brake drum shell and manufacturing method thereof
  • Bimetallic brake drum structure, brake drum shell and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0042] Embodiment 1: as figure 2 As shown, the bimetallic brake drum of this embodiment has the following structural features. The brake drum is composed of a rim portion 1 and a flange portion 2 . The rim portion 1 is composed of a steel shell layer 11 and a cast iron friction layer 12, the friction layer 12 is arranged inside the shell layer 11, and the two are combined by casting. The flange part 2 is composed of a steel structure layer 21 and a cast iron reinforcement layer 22, and the two are also combined by casting. The shell layer 11 of the rim part 1 and the structural layer 21 of the flange part 2 are an integral structure formed by processing steel materials. Different parts adopt different processing methods, for example, the same steel plate is processed, the shell layer 11 of the rim part 1 is formed by spinning and rolling, and the structural layer 21 of the flange part 2 is formed by stamping.

[0043] The rim part 1 of the present embodiment has the same st...

Embodiment 2

[0059] Such as Figure 10 As shown, the structure of the bimetallic brake drum of the present embodiment is basically the same as that of the embodiment, the difference is that the reinforcement layer of the flange portion is not the cast iron layer 22 combined by casting, but a round steel or other material made separately. The ring plate 221, the ring plate 221 is nested in the annular groove 24 of the flange part 2, the bolt hole 3 is set on the ring plate 221, and is fixedly connected with the structural layer 21 and the automobile wheel hub through the bolt hole 3, and the ring plate 221 increases The deformation resistance of the structural layer 21. It can also serve the purpose of increasing the thickness of the flange part and increasing the strength. The processing technology is simpler, but the effect is somewhat different than that of the embodiment, and it is still possible to realize the purpose of the present invention.

Embodiment 3

[0061] As shown in 11, further simplification is carried out on the basis of embodiment 2 to form embodiment 3. When making the brake drum shell, the flange part 2 is not flanged, and there is no need to form the flanging, but directly in the method. The inner side of the blue part structure layer 21 is directly fixed with bolts to the reinforcement layer steel plate 222, and a corresponding engaging structure can also be set between the reinforcement layer steel plate 222 and the steel structure layer 21 to facilitate the close combination between the two.

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Abstract

The invention discloses a bimetallic brake drum structure. The bimetallic brake drum structure comprises a rim part and a flange part, wherein the rim part is of a double-layer metal structure and comprises a shell layer and a friction layer which are combined in a casting mode; the flange part is of a double-layer metal structure and comprises a structural layer and a reinforcing layer which are tightly combined; and the shell layer of the rim part and the structural layer of the flange part are of an integrated structure made of the same material. A manufacturing method of the bimetallic brake drum comprises the following steps of: blanking and cutting of a thin steel plate, stamping and shaping, spinning and thinning, rolling and forming, manufacturing of the reinforcing layer of the flange part, manufacturing of the friction layer of the rim part and finish machining. Due to the fact that the double-layer flange part structure is arranged, the reinforcing layer of the flange part can achieve the effect of reinforcing the rigidity of the structural layer of the flange part, and the deformation resistance is improved. Therefore, when a brake drum shell is manufactured, the thin steel plate can be used for spinning and rolling operation, the spinning process difficulty of the steel plate during spinning and thinning is reduced, and the process cost is reduced.

Description

technical field [0001] The present invention relates to a bimetallic automobile brake drum structure, in particular to a bimetallic brake drum with steel material as the shell layer and gray cast iron as the friction layer. The present invention also relates to the above-mentioned bimetallic brake drum shell, At the same time, it also relates to the manufacturing method of the brake drum and the shell of the structure. Background technique [0002] The drum brake system used by trucks is to set the cylindrical metal brake drum on the inner ring of the wheel hub, and connect the hub with the end flange, and the brake pads and brake system are set in the inner space of the brake drum . The original automobile brake drum was made of pure gray cast iron. Because gray cast iron is a friction material with better performance, gray cast iron brake drum also once occupied the main market of automobile brake drum. However, there are obvious defects in the gray cast iron brake drum,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/10B23P15/00
CPCF16D65/10B23P15/00F16D2065/1304F16D2065/132
Inventor 张译
Owner 张译
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