Equilateral three-jaw flange sliding sleeve inversion reverse extrusion technology and inversion reverse extrusion mould

Abstract

The invention provides an equilateral three-jaw flange sliding sleeve inversion reverse extrusion technology. The equilateral three-jaw flange sliding sleeve inversion reverse extrusion technology comprises inversion reverse extrusion, wherein the inversion reverse extrusion comprises the steps of placing a rod material after sheet stamping into a mould cavity of an inversion reverse extrusion mould, simultaneously carrying out upsetting and extrusion on the rod material to form a blank, wherein one end of the blank is provided with an equilateral three-jaw flange disc, and the other end of the blank is in a barrel-type shape. The equilateral three-jaw flange sliding sleeve inversion reverse extrusion technology provided by the invention has the advantages that the relative movement of a reverse extrusion concave module and a reverse extrusion punch is utilized to carry out backward extrusion, an upsetting flange and reverse extrusion equal-wall-thickness sliding sleeve process are simultaneously performed, the technology is reduced, the efficiency is improved, the technology solves the problem that a material is hard to discharge, a thick gap is formed between the reverse extrusion punch and an inner wall of a reverse extrusion module cavity, the contacting area of the reverse extrusion punch and the rod material is small, the friction force is reduced when the material returns, the service life of the mould is prolonged, the technology is simple and practicable, the material is saved, the efficiency is improved, an inversion reverse extrusion mould is simple to manufacture, the assembly is easy, the service life is long, and the cost of the mould is saved.

Description

technical field [0001] The invention relates to the field of metal precision forging, in particular to an equilateral three-jaw flange sliding sleeve reverse back-extrusion process and a reverse back-extrusion die. Background technique [0002] The equilateral three-jaw flange sliding sleeve is a kind of universal joint with a three-jaw flange in the constant velocity universal joint. It is a kind of complicated shape among ordinary universal joints. Please refer to Figure 1A and Figure 1B . Figure 1A It is a top view structural diagram of an equilateral three-jaw flange sliding sleeve, Figure 1B for Figure 1A main view. The equilateral three-jaw flange sliding sleeve 100 includes an equilateral three-jaw flange 101 at the upper end and a cylindrical sliding sleeve 102 with equal wall thickness at the lower end. The cylindrical sliding sleeve 102 has a barrel-shaped blind hole 103 . The traditional manufacturing process of the equilateral three-jaw flange sliding slee...

AI Technical Summary

Problems solved by technology

The traditional manufacturing process of the equilateral three-jaw flange sliding sleeve mostly uses sand casting, which has low manufacturing precision, cumbersome process, large follow-up processing allowance and long cycle time.

At present, the conventional forging process is mostly used instead of sand casting, and the process of forging the cylindrical sliding sleeve 102 with equal wall thickness first, and then upsetting the equal-sided three-jaw flange 101 is adopted. Although the efficiency can be improved, the upsetting force is large. , it is easy to make the equal-wall thickness cylindrical sliding sleeve 102 at the lower end wrap on the stripper, the stripping force is large, and the life of the mold is greatly reduced

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