Compression-resistant type automobile hinge pin shaft and manufacturing technology thereof

Abstract

The invention discloses a compression-resistant type automobile hinge pin shaft and manufacturing technology thereof. The compression-resistant type automobile hinge pin shaft comprises a hollow hingepin, wherein an opening part is formed in the side wall of the hinge pin and along the axial direction of the hinge pin; the opening part is provided with a first side wall and a second side wall opposite to each other; a first tooth slot part is formed on the first side wall; a second tooth slot part is formed on the second side wall; the first tooth slot part and the second tooth slot part aremeshed with each other; the first tooth slot part and the second tooth slot part comprise a plurality of continuous tooth slots respectively; the opening width of the tooth crest of each tooth slot is1.4-1.6mm, the tooth depth is 0.6-0.7mm, and the tooth bottom of each tooth slot is of an arc shape; the junction surface of the tooth crests of adjacent tooth slots is of an arc shape. The hinge shaft provided by the invention has good overall compression resistance; with certain elasticity, the hinge shaft can counteract the impact force generated by a hinge part, thus the service life of the hinge pin is prolonged; moreover, the processing process is simple, the molding speed is high, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile parts, in particular to an automobile hinge pin and a manufacturing process thereof. Background technique [0002] With the continuous improvement of people's living standards and the gradual popularization of cars, people have more and more demands on the types of cars, and put forward higher and higher requirements for the design and innovation of cars. The pin shaft is a must for making cars. One of the parts. The pin shaft can be statically fixed and connected, and can also move relative to the connected parts. It is mainly used at the hinge of two parts to form a hinge connection. The pin shaft is usually locked with the parts by a cotter pin, which is reliable in operation and easy to disassemble. [0003] The main force direction of the pin shaft is the radial extrusion force on the surface. However, the pin shafts in the prior art are mostly solid pin rods, resulting in relatively rig...

AI Technical Summary

Problems solved by technology

[0003] The main force direction of the pin shaft is the radial extrusion force on the surface. However, the pin shafts in the prior art are mostly solid pin rods, resulting in relatively rigid pin shafts with poor elasticity, unable to resist the impact force generated by parts, and poor elasticity. The pin shaft is easily deformed, which affects the overall quality of the car

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