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Closed forging technique for steering knuckle

A joint-closed technology, which is applied in the field of forging production technology of automobile steering knuckles, can solve the problems of low material utilization rate and large metal consumption, achieve high material utilization rate, reduce investment, and improve the effect of forging material utilization rate

Active Publication Date: 2012-07-04
HUBEI TRI RING FORGING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The above-mentioned production technologies all adopt the open die forging process with flash. When producing the steering knuckle with this type of process, the stem of the steering knuckle is in the lower mold and the ear is in the upper mold. During the production process, a large flash is generated, which requires cutting Side process, high metal consumption, low material utilization rate

Method used

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  • Closed forging technique for steering knuckle
  • Closed forging technique for steering knuckle
  • Closed forging technique for steering knuckle

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention is described.

[0030] 1. Cutting: Use GB4025C band saw machine to cut φ140 round bar with a length of 275±1mm; Heating: Use KGPS800-1 medium frequency induction heating furnace to heat the round bar to the temperature required for forging process;

[0031] 2. Die forging:

[0032] 1) Upsetting: Upsetting the heated round bar on the upsetting table 1 and removing the oxide scale generated during heating at the same time. The length of the upsetting billet is 210±5mm, and the shape is like a drum;

[0033] 2) Extrusion billet: the upsetting billet is placed in the extrusion billet mold to extrude the billet;

[0034] The billet after extrusion, the extrusion billet mold, and its partial cross-sectional view are as follows: Figure 7 to Figure 11 As shown, the closed forging process is adopted, and the forging is carried out on an electric direct-drive screw press. The extrusion billet die and the fin...

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Abstract

The invention discloses a closed forging technique for a steering knuckle, belongs to automotive steering knuckle forging in the machining field, and overcomes the defects of need of procedures, such as trimming and the like, large metal consumption, low use ratio of a material and the like. The steering knuckle is forged on an electric straight direct drive spindle press by the closed forging technique; an extrusion blanking mould and a final forging mould both have a closed structure; a rod part of the steering knuckle is placed on an upper mould, and an ear part is placed on a lower mould;extrusion blanking and final forging forming can be tried; required blow energy is determined by actually debugging, a procedure of the blow energy is stored and used in the process of mass production; and in a series of technical schemes, the flashless forging of the steering knuckle is realized by three forging process steps, the procedures, such as preforging, trimming, revising and the like are saved, the use ratio of a forging material of the steering knuckle is increased, mould input is reduced, working efficiency is improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to the forging processing technology in the field of machinery manufacturing, and relates to a forging production technology of an automobile steering knuckle. Background technique [0002] The car steering knuckle is an important security part that bears the load of the front wheel. It connects the steering system, braking system and driving system of the car. Strong guarantee, it belongs to the security parts with very complicated shape in the chassis parts of the car. The steering knuckle is mainly composed of three parts: the rod, the flange and the two ears, and the flange connects the rod and the two ears. The common steering knuckle adopts the horizontal forging method, that is, the forging direction of the main deformation step and the steering knuckle The shaft axis is vertical. However, there is a kind of steering knuckle with ribs on both sides of the steering limit space to connect the two ears. This structure makes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K7/12B21K5/00B21K5/02B21K5/06
Inventor 胡道财曹世金陈天赋杨杰
Owner HUBEI TRI RING FORGING
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