A production process of a ball stud

Abstract

The invention discloses a production process of a ball pin, and relates to machining technologies. The production process of the ball pin is used for solving the problem that a common ball pin is prone to breakage. The production process comprises the following steps that (1) material selection and blanking are carried out; (2) forging and strengthening are carried out, and specifically a metal raw material in the step (1) is heated to 700-750 DEG C and then undergoes hot forging; (3) rough blank shaping is carried out, and specifically the forged metal is heated to 850-890 DEG C again, and then undergoes rolling shaping by using a die; (4) rough blank grinding is carried out; (5) heat treatment is carried out; and (6) post-processing is carried out. The production process of the ball pinhas the following advantages and effects that the ball pin formed through hot forging and rolling is not prone to crack due to the technological problem in the manufacturing process, then the ball pinis not prone to breakage due to stress concentration at the cracking position in the using process, moreover, the ball pin has relatively high surface hardness while the toughness of the core part isreserved by adopting the forming mode, then the fatigue damage is not prone to occurrence in the using process of the ball pin, and then the breakage is further not prone to occurrence.

Description

technical field [0001] The invention relates to mechanical processing technology, in particular to a production process of a ball stud. Background technique [0002] The ball stud is a widely used component in the independent suspension system of automobiles. The end of the control arm or thrust rod in the suspension system is usually equipped with a ball stud for connecting with other components, so that in the process of control The up and down beating and steering movement of the wheels are realized in the middle. [0003] At present, the Chinese invention patent with the authorized notification number CN103600013B discloses a cold heading forming process for metal parts. The process includes: a) blanking positioning of metal bars; Upsetting hole; f) Spherical cold heading perforation. [0004] Since the ball stud is the main component of the connection force in the suspension system, its strength must be strong enough, otherwise it is easy to crack during use, and the ...

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Problems solved by technology

[0004] Since the ball stud is the main component of the connection force in the suspension system, its strength must be strong enough, otherwise it is easy to crack during use, and the ball stud manufactured by the above cold heading process, after cold heading Once the force is not well controlled during the upsetting process, it is easy to cause cracks on the ball stud, then the stress applied to the ball stud by foreign objects during the use of the ball stud is easy to concentrate at the crack, so it is easy to cause the ball stud to be damaged. pin break

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