Method for manufacturing universal joint using pipe

Abstract

The purpose of the present invention is to provide a method for manufacturing a universal joint using a pipe, wherein a shaft joint having a yoke formed integrally therewith and a pipe joint are manufactured by cutting a pipe into a material having a predetermined length, forming the material, pressing the material, and then processing the material, thereby providing advantageous effects of manufacturing cost reduction, productivity improvement, and product weight decrease while guaranteeing durability. Particularly, a pipe joint is manufactured by a material preparing step of cutting a pipe into a predetermined length, thereby preparing a material; a shaft forming step of forming the outer portion of a shaft forming portion of the material, excluding a head forming portion, by a forming machine such that, by reducing the outer diameter thereof, a shaft is formed; an incising step of forming a splitting groove on the head forming portion, which has not been reduced, in the axial direction such that the same is bifurcated; a yoke forming step of pressing the incised head forming portion such that a pair of yokes are formed on the head so as to face each other; a pin hole forming step of forming a pin hole in the yoke; a material preparing step of manufacturing a shaft joint through a spline shaft forming step of forming a spline shaft on the outer surface of the reduced hollow shaft and cutting the pipe into a predetermined length, thereby preparing a material; a tube forming step of forming the outer portion of a tube forming portion of the material, excluding a head forming portion, by the forming machine such that the outer diameter thereof is reduced; an incising step of forming a splitting groove on the head forming portion, which has not been reduced, in the axialdirection such that the same is bifurcated; a yoke forming step of pressing the incised head forming portion such that a pair of yokes are formed on the head so as to face each other; a pin hole forming step of forming a pin hole in the yoke; and a spline boss forming step of forming a spline boss on the inner surface of the reduced hollow tube.

Description

technical field [0001] The present invention relates to a method of manufacturing a universal joint from a pipe suitable for a steering device for operating a direction of travel of a vehicle arbitrarily, and more specifically, it is desired to provide a method of manufacturing a universal joint from a pipe , the manufacture of shaft joints and pipe joints integrated with the yoke can be manufactured by forming and pressing the material formed by cutting the pipe according to the specified length, and then processing it, so as to save manufacturing costs, improve productivity, and reduce products. While reducing the weight effect, durability can also be satisfied. Background technique [0002] Generally, in order to allow the driver to change the direction of travel of the vehicle arbitrarily, a steering device is provided on the automobile. The steering device includes: a steering wheel, which is arranged in front of the driver's seat, and is used to change the direction o...

AI Technical Summary

Problems solved by technology

[0008] In the above-mentioned prior art, the raw material is made of a round bar. In order to form the yoke, it is formed by a process of developing the bar-shaped material by a forging process and bending it. In addition, in the case of a pipe joint, it should be formed by an extrusion molding process. Hole through the center, but the manufacturing process is complicated, making it difficult to increase productivity

[0009] In addition, in the case of shaft joints, since the structure of the spline shaft is formed outside the rod-shaped material, it is difficult to reduce the weight, and it is also difficult to contribute to the efforts to reduce the weight of parts in the automotive industry for the purpose of improving fuel consumption, etc.

Images