Cold extrusion mold for ball pin

Abstract

The invention discloses a cold extrusion mold for a ball pin. The cold extrusion mold comprises an upper mold body (1), a lower mold body (2), an upper mold sleeve (3), a lower mold sleeve (4) and a product (9). The upper mold body (1) is fixed to the interior of the upper mold sleeve (3), and the lower mold body (2) is fixed to the interior of the lower mold sleeve (4); a lower mold base plate (5) is arranged in the lower mold sleeve (4), and is located at the bottom of the lower mold body (2); the product (9) comprises a ball head (27), a neck portion (28) and a rod portion (29) and further comprises a haff guide mold (6) and at least three haff blocks (7); the haff guide mold (6) is fixed to the interior of the lower mold sleeve (4), and a first through hole (8) is formed in the middle of the haff guide mold (6); and the lower mold body (2) is located in the first through hole (8), and the haff blocks (7) are located in the haff guide mold (6). By means of the cold extrusion mold for the ball pin, the machining allowance of the ball pin is lesser, the strength is higher, and the cost is lower.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to a ball pin cold extrusion mold. Background technique [0002] Today, when automobiles are becoming more and more popular, automobile manufacturers pay more and more attention to the product quality and manufacturing cost of automobiles. Therefore, how to improve product quality and reduce the manufacturing cost of automobiles has become an urgent problem for major automobile OEMs and auto parts enterprises. As a connecting part of the automobile suspension, steering system and stability system, the role of the ball joint assembly cannot be ignored. The reason is that each car needs to use a large number of ball joint assemblies to achieve specific functions. A conventional ball joint assembly mainly includes a ball stud and a ball stud seat. Since the ball diameter of the ball stud is larger than the size of the shaft, the general ball stud manufacturing process requires a relativ...

AI Technical Summary

Problems solved by technology

A conventional ball joint assembly mainly includes a ball stud and a ball stud seat. Since the ball diameter of the ball stud is larger than the size of the shaft, the general ball stud manufacturing process requires a relatively large amount of raw materials, so that it can be The manufacturing cost of the ball stud is relatively high; secondly, due to the large amount of cutting, the shear resistance of the neck of the ball stud is also reduced

Generally speaking, a ball stud includes a ball head, a neck and a club. There is a protrusion on the club, and a groove of a certain size is processed between the protrusion and the ball head. According to the prior art, the ball stud is generally produced The pin is first cold-extruded to form the ball head and the club, and two sections are formed on the club, the diameter of the section near the ball head is larger than the diameter of the section far away from the ball head, and then the section near the ball head of the club is turned by a lathe to form a ball neck , the machining allowance is large, the waste of raw materials is serious, the connection strength between the ball head and the ball neck is relatively weak, and the bending strength and shear strength of the ball stud pin are reduced

[0003] The solution to such problems at home and abroad is mainly through triaxial pressure combined extrusion molding and neck extrusion molding. The main disadvantages of this production method are high energy consumption and slow efficiency; High material to process the ball stud, this method requires more molding pressure, and the subsequent processing such as turning consumes more resources

Although the strength problem can be solved, the cost problem has not been solved, and the manufacturing cost has also been increased.

Images