Passenger vehicle steering knuckle precise forging die for hammer forging

Abstract

The invention discloses a passenger vehicle steering knuckle precise forging die for hammer forging. The passenger vehicle steering knuckle precise forging die comprises an upper forging die and a lower forging die, the upper forging die is provided with an upper pre-forging cavity and an upper final-forging cavity, the lower forging die is provided with a lower pre-forging cavity matched with the upper pre-forging cavity and a lower final-forging cavity matched with the upper final-forging cavity, the periphery of the lower forging die at the lower pre-forging cavity and the lower final-forging die is provided with a resistance dam. The passenger vehicle steering knuckle precise forging die disclosed by the invention is suitable for the precise forging of the passenger vehicle steering knuckle for the hammer forging, the sufficient forming of the forge piece is satisfied, and the demands of size precision of misplacement of die and the surface quality and the long service life are satisfied.

Description

[0001] technical field [0002] The invention relates to the field of precision forging and thermal processing of forged steering knuckles on passenger car chassis, in particular to a precision forging die for passenger car steering knuckles for hammer forging. Background technique [0003] The key technology of forging steering knuckle is precision forging technology, and the core of precision forging technology is precision forging die. This technology has the following characteristics: [0004] (1) The forging and forming of forged knuckles is difficult, and the life of ordinary molds is short; [0005] (2) There is no ejection mechanism on the die forging hammer for forging the steering knuckle, and the ejection of the forging is mainly realized by shocking the forging die; [0006] (3) Forged steering knuckles require high dimensional accuracy and surface quality, and precision die forging is required; [0007] (4) The forged steering knuckle is parted on a curve...

AI Technical Summary

Problems solved by technology

[0004] (1) The forging and forming of forged knuckles is difficult, and the life of ordinary molds is short;

[0005] (2) There is no ejection mechanism on the die forging hammer for forging the steering knuckle, and the ejection of the forging is mainly realized by shocking the forging die;

[0008] The forming of forged steering knuckle is difficult, requires high precision, and is not easy to demould. At present, almost all of them are faced with short die life, poor surface quality of forging parts, large forging error mold size, and difficult production control.

The filling of forgings is not enough, it is easy to form defects such as forging folds, and it is difficult to control the dimensional accuracy.

The key technology is that the mold clamping of the upper and lower molds depends on the X-shaped radial guide rail of the hammer forging equipment and the gap between the upper and lower forging mold locks. During the mass production process, the tolerance of the wrong mold fluctuates greatly. , the hot material is easy to overflow under the reaction of the gas in the cavity, which cannot ensure that the forged steering knuckle is fully formed

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