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Front axle roll-forging finished blank mold of heavy-duty car

A technology of roll forging refined blanks and heavy vehicles, which is applied in the direction of manufacturing tools, forging/pressing/hammering machines, forging/pressing/hammer devices, etc. Affect product quality stability and other issues, to achieve the effect of improving the connection state, helping metal flow, and uniform plastic deformation

Inactive Publication Date: 2012-01-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semi-closed rectangular groove system will cause uneven deformation distribution of the deformed body along the width direction of the groove, which will cause additional stress and increase the energy consumption of roll forging. At the same time, the contact between the groove and the blank will be uneven, resulting in uneven groove Abrasion affects the stability of product quality and reduces the life of the mold
In order to avoid slipping, this type of groove system can only rely on the method of applying a reduction directly above the corresponding part of the spring plate, which affects the widening of the deformed part during forming roll forging, and it is easy to fall between the spring plate and the I-shaped during forming roll forging. Defects such as large ears and folds caused by beam transitions
This type of groove system is also likely to cause uneven distribution of materials between the two spring plates, resulting in inconsistent dimensions between the beginning and end of the front axle after forming roll forging

Method used

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  • Front axle roll-forging finished blank mold of heavy-duty car
  • Front axle roll-forging finished blank mold of heavy-duty car
  • Front axle roll-forging finished blank mold of heavy-duty car

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The present invention is described in detail by taking the roll forging refined billet die of the front axle of the A680 type automobile as an example.

[0085] The mold includes an upper half mold and a lower half mold. The upper and lower half molds are symmetrically installed on the upper and lower rolls of the roll forging machine through the annular channel and the annular boss on the opposite surface respectively, and the upper and lower half molds The gap between them is 5mm, the central angle α of the upper and lower half molds is both 120°, the inner and outer radii and widths of the upper and lower half molds are 300mm, 495mm, and 265mm respectively, and the annular passage on one side of each half mold The inner and outer radii and groove depths of the grooves are 350mm, 399mm, and 8mm respectively, and the inner and outer radii and heights of the annular bosses on the other side of each mold half are 350mm, 399mm, and 8mm, respectively. There are 6 sections ...

Embodiment 2

[0087] The present invention is described in detail by taking the roll forging refined billet die of the front axle of the EQ142 type automobile as an example.

[0088] The mold includes an upper half mold and a lower half mold. The upper and lower half molds are symmetrically installed on the upper and lower rolls of the roll forging machine through the annular channel and the annular boss on the opposite surface respectively, and the upper and lower half molds The gap between them is 2mm, the central angle α of the upper and lower half molds is 109°, the inner and outer radii and widths of the upper and lower half molds are 260mm, 395mm, and 250mm respectively, and the ring on one side of each half mold The inner and outer radii and groove depths of the through groove are 310mm, 359mm, and 8mm respectively, and the inner and outer radii and heights of the annular bosses on the other side of each half mold are 310mm, 359mm, and 8mm, respectively. The upper and lower half molds...

Embodiment 3

[0090] The present invention is described in detail by taking the roll forging refined billet mold of the front axle of the YQ153A type automobile as an example.

[0091] The mold includes an upper half mold and a lower half mold. The upper and lower half molds are symmetrically installed on the upper and lower rolls of the roll forging machine through the annular channel and the annular boss on the opposite surface respectively, and the upper and lower half molds The gap between them is 5mm, the central angle α of the upper and lower half molds is both 120°, the inner and outer radii and widths of the upper and lower half molds are 300mm, 495mm, and 265mm respectively, and the annular passage on one side of each half mold The inner and outer radii and groove depths of the grooves are 350mm, 399mm, and 8mm respectively, and the inner and outer radii and heights of the annular bosses on the other side of each mold half are 350mm, 399mm, and 8mm, respectively. There are 6 sectio...

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Abstract

The invention provides a front axle roll-forging finished blank mold of a heavy-duty car, which relates to a front axle roll-forging finished blank mold of a car, in particular to a front axle roll-forging finished blank mold of a heavy-duty car. The mold comprises an upper half mold and a lower half mold which are respectively and symmetrically arranged on an upper roll and a lower roll of a roll-forging machine; the gap between the upper half mold and the lower half mold is 2 to 5mm; central angles of the upper half mold and the lower half mold are respectively 107.7-121.6 degrees; each half mold is a ring body, the inner radius and the outer radius and the width of which are respectively 260-300mm, 395-495mm and 250-265mm; the outer ring surfaces between the two ends of the upper half mold and the lower half mold are respectively provided with identical and symmetrical special grooves and through grooves consisting of transition grooves between the special grooves; and the radial sections of the special grooves form respective and corresponding hole types when the special grooves of all the same and corresponding sections on the upper half mold and the lower mold rotate along the upper roll and the lower roll of the roll-forging machine to the same axis position. The front axle roll-forging finished blank mold improves the accuracy of the roll-forging blanking, prolongs theservice life of the mold and reduces the energy consumption.

Description

technical field [0001] The invention relates to a roll forging billet die for the front axle of an automobile, in particular to a roll forging refined billet die for the front axle of a heavy-duty automobile. Background technique [0002] In 2006, "China Mechanical Engineering" Volume 17 Supplement, pages 129-131, published the article "Numerical Simulation and Process Optimization of Automobile Front Axle Billet Roll Forging" by Wang Huajun et al. In this paper, the die for the roll forging blank of the automobile front axle is designed. The die adopts a semi-closed rectangular groove system, and a special-shaped hat-shaped groove is used in the corresponding part of the spring plate, and the resistance groove is engraved on it to solve the problem. Inhomogeneous deformation and required widening in billet roll forging. The semi-closed rectangular groove system will cause uneven deformation distribution of the deformed body along the width direction of the groove, which wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/02
Inventor 夏玉峰周杰贾智柳豪王梦寒刘昭明
Owner CHONGQING UNIV
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