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Technology and mold for pressure sizing and net shaping of drum-type knuckle flange

A steering knuckle and net-shape technology, applied in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of large machining workload, reduced material utilization, and difficulty in flange part

Inactive Publication Date: 2019-04-26
HUBEI TRI RING FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although qualified die forgings have been produced in batches, the existing problem is that the machining of the flange part is heavy and difficult, and the material utilization rate is also reduced.

Method used

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  • Technology and mold for pressure sizing and net shaping of drum-type knuckle flange
  • Technology and mold for pressure sizing and net shaping of drum-type knuckle flange
  • Technology and mold for pressure sizing and net shaping of drum-type knuckle flange

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] Select the A1 type automobile steering knuckle ( figure 1 ) as an application example of this new process and mold. The forging process before flange fine pressing and net forming includes: using a round bar of Φ125×292 to complete the four processes of rod drawing, overall flattening, splitting, and pre-forging on a 3T hammer, and then transfer to a 5T or 10T hammer The final forging is carried out on the machine, and then the final forging flash is cut off on an 800-ton screw press. The whole process adopts one-fire forging. Die forgings obtained by final forging ( figure 2 ) have the same lug and stem dimensions as the part, the flange projection size is the same as the part, and the draft angle of the top surface of the flange is 10° ...

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Abstract

The invention provides a technology and mold for pressure sizing and net shaping of a drum-type knuckle flange, wherein a drum-type knuckle forge piece produced with a horizontal-parting and horizontal-mold-forging technology is used on hammer equipment; the forging piece is put at a vertical state by a vertically divisible concave mold after edge cutting; and acting force is applied with a convexmold, so the flange with a large draft angle can satisfy the size required form a drum-type steering part flange after pressure sizing and net shaping. The invention also provides the mold used to implement the above method. The mold comprises a concave mold frame, a combined convex mold, a divisible concave mold and a divisible concave mold openable mechanism, wherein the concave mold is openedand closed under reciprocating motion of an ejection oil cylinder piston rod and motion of a rotatable hinge and a T-shaped guide device on the divisible concave mold, so the vertical pressure sizingand net shaping of the complicated knuckle forging piece can be realized. The technology and mold provided by the invention have the advantages that the amount and difficulty of subsequent machining are reduced and the material utilization rate is increased.

Description

technical field [0001] The invention belongs to a processing method for steering knuckle forgings, and in particular relates to a drum-type steering knuckle flange precision pressing net forming process and a die. Background technique [0002] The basic structure of the drum steering knuckle is as follows: figure 1 As shown, it is composed of left and right fork lugs that are parallel to each other, a flange that is approximately hexagonal and a stepped shaft. °, 7.2° and 8°. The horizontal projection area of ​​the flange is large, and the height dimension is small, that is, large and thin. In response to this structural feature, Hubei Sanhuan Forging Co., Ltd. has developed a horizontal die forging process on hammer equipment in recent years, choosing the symmetrical plane of the part as the horizontal die forging surface. In order to smoothly fill the narrow and deep flange cavity on the upper and lower dies during die forging, and also facilitate the forging to exit fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J13/02
CPCB21J5/025B21J13/02
Inventor 张运军代和平阮国勇刘高周明王国文吴冬波张鹏夏巨谌
Owner HUBEI TRI RING FORGING
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