Cold-heading die for manufacturing external-hexangular ball-head pin of automobile

Abstract

The invention provides a cold-heading die for manufacturing an external-hexangular ball-head pin of an automobile. The cold-heading die comprises an upper die and a lower die which are matched with each other, wherein the lower die comprises a lower forming die main body, a fixing sleeve and a cold-heading die sleeve, the lower forming die main body is cylindrical, the cold-heading die sleeve sleeves the outer peripheral surface of the lower forming die main body, the fixing sleeve sleeves the outer side of the cold-heading die sleeve, and a plurality of inwardly-concave lower inclined grooves are formed in the outer peripheral surface of the fixing sleeve; a forming cavity which penetrates through the upper and lower ends is formed in the center of the lower forming die main body and is of a multistage-ladder shape with a big upper part and a small lower part, and the top of the forming cavity expands outwards to form a lower ball head groove; an upper ball head groove matched with the lower ball head groove is formed in the bottom of an upper forming die main body. According to the cold-heading die, through improving a process design method of the die, the concentricity and accuracy are guaranteed, the generation of relatively more wastes is avoided, and human, physical and financial resources and the like are saved.

Description

technical field [0001] The invention relates to the manufacture of automobile parts, in particular to a cold heading die for manufacturing automobile outer hexagonal ball studs. Background technique [0002] The traditional 22-10264 ball stud pin has a simple structure and low cost, but it is not firm and flexible during use, and the concentricity and product accuracy cannot meet the requirements. The 22-10264 ball stud pin has a special structure and high structural requirements. The current manufacturing process of the 22-10264 ball stud pin is produced by the machining center. The existing process flow is: send the cut material to the machining center for turning , Milling instrument processing, and finally product packaging. However, the machining equipment is expensive, and the processing efficiency is low, the concentricity cannot be guaranteed, and the product accuracy cannot meet the requirements. At the same time, due to the use of instrument processing, more waste...

AI Technical Summary

Problems solved by technology

However, the machining equipment is expensive, and the processing efficiency is low, the concentricity cannot be guaranteed, and the product accuracy cannot meet the requirements. At the same time, due to the use of instrument processing, more waste will be generated, and the metal flow line will be destroyed, resulting in low product strength.

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