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Manufacturing method of wheel rim for vehicle

A manufacturing method and rim technology are applied in the field of manufacturing vehicle wheel rims from blank rings, which can solve the problems of inability to directly use rectangular flat plates and material waste, and achieve the possibility of suppressing bending, depression and waste. Effect

Active Publication Date: 2016-06-01
TOPY INDUSTRIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to use a rectangular flat panel directly, which will cause waste of materials
In addition, since the rim portion is formed by drawing a circular flat plate, a large deformation process has been applied before the stamping process is performed on the rim portion, especially when the material is a steel plate, due to work hardening , it is difficult to form the rim part into a high-quality rim part by press forming later

Method used

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  • Manufacturing method of wheel rim for vehicle
  • Manufacturing method of wheel rim for vehicle
  • Manufacturing method of wheel rim for vehicle

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0047] Below, refer to Figure 1 to Figure 15 A method of manufacturing a vehicle wheel rim according to an embodiment of the present invention will be described.

[0048] The manufacturing method of the vehicle wheel rim (hereinafter referred to simply as rim) 30 of the embodiment of the present invention is as follows: figure 1 , figure 2A method of producing a rim 30 from a blank ring (plain ring) 20 as shown. The material of the blank ring 20 is steel. The rim 30 is, for example, a rim for a passenger car, a truck / bus, or an industrial vehicle.

[0049] Such as Figure 6 As shown, the rim 30 has a first flange portion 30a, a first bead seat portion 30b, a protruding portion 30h, and a recessed portion 30d in sequence from one axial end toward the other end (the recessed portion 30d consists of the first side wall portion 30c, The concave bottom surface portion 30d1, the second side wall portion 30e), the second bead seat portion 30f, and the second flange portion 30...

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Abstract

A method for manufacturing a wheel rim for a wheel has: a base ring fabrication step for coiling a rectangular steel plate (10) into the form of a cylinder and welding and joining the two end parts of the coil to fabricate a base ring (20); and a rim-molding step carried out by a press, which moves an inner peripheral mold (42) and an outer peripheral mold (41) divided in the peripheral direction, to the base ring (20) to simultaneously reduce the diameter of the base ring (20) with the outer peripheral mold (41) and increase the diameter of the base ring (20) with the inner peripheral mold (42) and form the base ring (20) into a rim shape. The rim-molding step comprises at least one pre-molding step, and a finishing step.

Description

technical field [0001] The present invention relates to a method for manufacturing a wheel rim for a vehicle, in particular to a method for manufacturing a wheel rim for a vehicle from a blank ring. Background technique [0002] Patent Document 1 discloses manufacturing such as Figure 16 As shown, the wheel rim 6 and the wheel disc 7 are integrated. Patent Document 1 discloses a method of forming a rim 6 by press using an outer peripheral die 8 a and an inner peripheral die 8 b. [0003] However, the manufacturing method of the vehicle wheel rim disclosed in the above publication has the following problems. [0004] Since the rim 6 and the wheel disc 7 are integrated, it is necessary to use a circular flat plate. Therefore, it is not possible to directly use a rectangular flat plate, which causes waste of materials. In addition, since the rim portion is formed by drawing a circular flat plate, a large deformation process has been applied before the stamping process is pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/30B60B21/02
CPCB21D53/30B60B21/02
Inventor 阿部喜四郎
Owner TOPY INDUSTRIES