Manufacturing process for lambdoidal control arm

A manufacturing process and control arm technology, applied to railway car body parts, transportation and packaging, vehicle parts, etc., can solve the problems of long processing time, affecting product production efficiency, affecting product forming performance, etc., to shorten the total production time, guaranteed performance, and the effect of saving production time

Inactive Publication Date: 2012-06-20
芜湖禾田汽车工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The forging process of this control arm has the following problems: First, due to the large cross-sectional area of ​​the extruded profile, the subsequent processing time is relatively long, which affects the production efficiency of the product; The heating speed and uniformity of heating affect the forming performance of the product; thirdly, the free forging process is easy to cause folds on the surface of the billet, and it is necessary to increase the repair process to remove the folds, which prolongs the production time, increases the production cost, and reduces the production efficiency; finally, the use of In the way of cold trimming, the product needs to be cooled for a period of time after the final forming die forging before trimming. The manufacturing process of the product is discontinuous, which prolongs the production time of the product and reduces the production efficiency.

Method used

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  • Manufacturing process for lambdoidal control arm
  • Manufacturing process for lambdoidal control arm
  • Manufacturing process for lambdoidal control arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 2 As shown, the manufacturing process of the herringbone control arm includes the following steps: extruded bar sawing-heating-roll forging billet-bending forming-pre-forming die forging-final forming die forging-trimming; specific processes for:

[0033] (1) Extruded bar is sawed, and the aluminum alloy extruded bar is selected as the raw material. The structure of the aluminum alloy extruded bar is as follows Figure 4 Extruded bars are sawn into billets using a high-speed circular saw as shown;

[0034] (2) heating, the billet sawed into is heated by a medium frequency induction heating furnace, and the controlled heating temperature is 440°C;

[0035] (3) Roll forging billets, use a roll forging machine to roll forge the heated billets; use two passes of roll forging; control the roll forging speed to control the billet temperature after roll forging is 420 ° C, roll forging After the blank such as Figure 5 shown;

[0036] (4) Bending and formi...

Embodiment 2

[0043] Such as figure 2 As shown, the manufacturing process of the herringbone control arm includes the following steps: extruded bar sawing-heating-roll forging billet-bending forming-pre-forming die forging-final forming die forging-trimming; specific processes for:

[0044] (1) Extruded bar is sawed, and the aluminum alloy extruded bar is selected as the raw material. The structure of the aluminum alloy extruded bar is as follows Figure 4 Extruded bars are sawn into billets using a high-speed circular saw as shown;

[0045] (2) heating, the billet sawed into is heated by an intermediate frequency induction heating furnace, and the controlled heating temperature is 480°C;

[0046] (3) Roll forging billets, use a roll forging machine to roll forge the heated billets; use two passes of roll forging; control the roll forging speed to control the temperature of the billets after roll forging is 460 ° C, roll forging After the blank such as Figure 5 shown;

[0047] (4) Be...

Embodiment 3

[0054] Such as figure 2 As shown, the manufacturing process of the herringbone control arm includes the following steps: extruded bar sawing-heating-roll forging billet-bending forming-pre-forming die forging-final forming die forging-trimming; specific processes for:

[0055] (1) Extruded bar is sawed, and the aluminum alloy extruded bar is selected as the raw material. The structure of the aluminum alloy extruded bar is as follows Figure 4 Extruded bars are sawn into billets using a high-speed circular saw as shown;

[0056] (2) heating, the billet sawed into is heated by a medium frequency induction heating furnace, and the controlled heating temperature is 460°C;

[0057] (3) Roll forging billets, use a roll forging machine to roll forge the heated billets; use two passes of roll forging; control the roll forging speed to control the temperature of the billets after roll forging is 440 ° C, roll forging After the blank such as Figure 5 shown;

[0058] (4) Bending a...

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Abstract

The invention discloses a manufacturing process for a lambdoidal control arm. The manufacturing process comprises the following steps of: sawing an extruded bar; heating the extruded bar; rolling and forging the extruded bar to form a blank; bending to form the blank; preforming a forged die; finally forming the forged die; and trimming the forged die. In the manufacturing process, the extruded bar is taken as a raw material; the blank is heated to 440 DEG C-480 DEG C through electric induction; the blank is rolled and forged twice by a forging roll to realize volume distribution; the processes of bending to form the blank, preforming the forged die and finally forming the forged die are carried in sequence; and the trimming process is carried out in a thermal cutting manner. Compared with the prior art, a repairing process and a secondary heating process are reduced, the processing steps for the lambdoidal control arm are simplified, production cost for the product can be lowered, production rate can be increased, and product performances can be ensured.

Description

technical field [0001] The invention relates to the field of automobile control arms, in particular to a manufacturing process of a herringbone control arm. Background technique [0002] The car control arm belongs to the connection structure in the car chassis suspension system, which is used to connect the wheel hub and the sub-frame. With the requirements of automobile lightweight, iron control arms are gradually replaced by aluminum alloy control arms. Herringbone control arms are mostly forged, and the forging process is as follows: figure 1 As shown, it specifically includes the process: (1) Extruded profile cutting, using aluminum alloy extruded profile as raw material, using a band sawing machine to saw according to the required length; (2) heating, placing the cut material on an electric heating Heating in the furnace, the heating temperature is controlled at 420-480°C, and the uniformity of the heating temperature is ±10°C; (3) Free forging, the heated material i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K7/12B21J5/02
Inventor 潘琦俊包其华施先锋
Owner 芜湖禾田汽车工业有限公司
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