Method for improving elongation and shrinkage of rod part of steering knuckle

A steering knuckle and elongation technology, which is applied to steering rods, steering mechanisms, vehicle components, etc., can solve the problems of high mechanical performance requirements of steering knuckles, and achieve the goals of avoiding mechanical performance degradation, improving elongation, and improving stress distribution Effect

Active Publication Date: 2021-03-16
HUBEI TRI RING FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the steering knuckle bears a large load during use, and the magnitude and direction of the load change with the road conditions and vehicle speed, the mechanical performance requirements of the steering knuckle are relatively high, amo

Method used

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  • Method for improving elongation and shrinkage of rod part of steering knuckle
  • Method for improving elongation and shrinkage of rod part of steering knuckle
  • Method for improving elongation and shrinkage of rod part of steering knuckle

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the implementation scope of the present invention is not limited thereto.

[0034] The steering knuckle processed in this embodiment is ZF 144 steering knuckle, and its structure is as follows image 3 shown. The test method of the elongation and shrinkage of the steering knuckle rod is carried out according to the detection method described above, and the shape and position of the test bar 5 are as follows: image 3 shown. The steering knuckle processed according to the original technology is tested by the above detection method. The test rod 5 on the side close to the long ear 3 can meet the requirements, and the test rod 5 on the side close to the short ear 4 does not meet the requirements. Therefore, this embodiment improves it by the following method.

[0035] Specifically, the round steel is heated, upsetting, extruded, pre...

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Abstract

The invention relates to the technical field of steering knuckles, and in particular relates to a method for improving the elongation and the shrinkage of a rod part of a steering knuckle. The methodcomprises the steps of heating round steel, upsetting, extruding, pre-forging and finish-forging to obtain a forging blank, and during pre-forging, arranging a transition arc at the joint of the rod part and a disc part of the steering knuckle, and the transition arc forming an annular face around the axis of the rod part. The radius of the transition arc on the side, close to a steering knuckle long lug, of the annular face is R1, R1 is a fixed value, the radius of the transition arc on the side, close to a steering knuckle short lug, of the annular face is R2, the plane where the axis of therod part of the steering knuckle and the axis of a main pin hole are located serves as a datum plane, and R2 is evenly reduced to R1 along with the angle deviating from the datum plane. According tothe method, rod part mold filling can be facilitated, shear damage of an internal metal flow line in the forming process of the rod part of the steering knuckle is reduced, and reduction of the mechanical performance of the rod part is avoided; the rod part can be uniformly distributed, and two sides of the flow line are uniformly and symmetrically distributed; and the stress distribution at the joint of the rod part and the disc part of the steering knuckle is improved.

Description

technical field [0001] The invention relates to the technical field of steering knuckles, in particular to a method for improving the elongation and contraction ratio of the steering knuckle stem. Background technique [0002] The steering knuckle is one of the main parts on the steering axle of the car, which can make the car run stably and transmit the driving direction sensitively. The function of the steering knuckle is to bear the front load of the car, support and drive the front wheel to rotate around the kingpin to make the car turn. The steering knuckle includes a rod part, a disc part and an ear part (long ear and short ear), wherein the long ear and the short ear are provided with coaxial kingpin holes. [0003] Steering knuckles are generally forged from round steel into forging blanks, and then heat-treated and machined to obtain finished products. Since the steering knuckle bears a large load during use, and the magnitude and direction of the load change with ...

Claims

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Application Information

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IPC IPC(8): B62D7/18
CPCB62D7/18
Inventor 张运军陈天赋黄明伟代合平晏洋倪权斌刘宏扬左长兵王国文杨杰牛洪波
Owner HUBEI TRI RING FORGING
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