Methods of improving the elongation and shrinkage of the steering knuckle rod

Abstract

The invention relates to the technical field of steering knuckles, in particular to a method for improving the elongation rate and shrinkage rate of a steering knuckle rod. , a transition arc is provided at the junction of the rod part of the steering knuckle and the disk part, and the transition arc forms an annular surface around the axis of the rod part, and the radius of the transition arc on the side of the annular surface close to the long ear of the steering knuckle is R 1 , the R 1 is a fixed value, the radius of the transition arc on the side of the annular surface close to the short ear of the steering knuckle is R 2 , taking the plane where the shaft axis of the steering knuckle and the axis of the king pin hole are located as the reference plane, the R 2 uniformly decreases to R with the deviation from this reference plane 1 , the present invention can facilitate the filling of the rod part, reduce the shear damage of the internal metal streamline during the forming process of the steering knuckle rod part, and avoid the reduction of the mechanical performance of the rod part; Symmetrical; improved stress distribution at the junction of the knuckle stem and disc.

Description

technical field [0001] The invention relates to the technical field of steering knuckles, in particular to a method for improving the elongation rate and shrinkage rate of a steering knuckle rod portion. Background technique [0002] The steering knuckle is one of the main parts on the steering axle of a car, which can make the car run stably and transmit the driving direction sensitively. The steering knuckle includes a stem portion, a disc portion, and a lug portion (long lug and short lug), wherein the long lug and the short lug 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 in use, and the magnitude and direction of the load change with road conditions and vehicle speed, the mechanical properties of the steering knuckle are required to be higher, and the elongation and shrinkage rate...

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, among which the elongation and shrinkage of the rod can be used to a certain extent It reflects the mechanical performance of the steering knuckle. At present, there is no published prior art to detect this index and actively improve this index

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