A kind of blank forging molding process of flange type universal joint sliding sleeve for vehicle

Abstract

The invention discloses a forging molding process for a blank of a flange type universal joint sliding sleeve for a vehicle, which belongs to the field of forging technology. The pre-shearing ball net set in the extrusion area of ​​the rough material, after the back-extrusion into the cylinder, the pre-shearing ball net is just near the contact point between the residual material block and the forging rough material with flange structure, and is heated together. The operation of heating up and cooling down makes the pre-shear ball net vaporized inside the water rapidly increase the expansion and extrusion force, and the pre-shear ball net can be cracked, so that the remaining material block and the forging with flange structure Multiple holes are produced at the joint of the coarse material, thereby reducing the connection strength between the two. With the operation of one-sided knocking, the remaining material block can be semi-self-shedding after being reversely extruded into a tube, and on the one hand, it reduces the need for further processing of the remaining material block in the later stage. The processing workload, on the other hand, can significantly reduce the waste of materials.

Description

technical field [0001] The invention relates to the technical field of forging, and more specifically, relates to a blank forging and forming process of a flanged universal joint sliding sleeve for a vehicle. Background technique [0002] In automobile production, in order to transmit power at a constant speed, a constant velocity universal joint is required. The sliding sleeve is an important component of the slip end of the constant velocity universal joint, which is used to connect the automobile gearbox and the constant velocity drive shaft. The constant velocity universal joint is a mechanism that can transmit motion and torque when the main and driven shafts have angular displacement. The constant velocity universal joint flange in the prior art includes the shell and the flange part on the shell. Its interior is composed of an inner spherical surface and ball grooves uniformly distributed longitudinally on the spherical surface. The spherical surface forms a double e...

AI Technical Summary

Problems solved by technology

[0004] When the existing flange-type universal joint sliding sleeve is forged, the finished product always has residual material at the bottom. The residual material will not only cause material waste, but also need to be processed after forming. Cutting and grinding will virtually increase the workload of the staff, making the overall manufacturing efficiency of the flanged universal joint sliding sleeve lower

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