CN104972274A - Special rolling technology of truck half-shaft casing pipes - Google Patents

Abstract

The invention belongs to the field of automobile accessories, and discloses a special rolling technology of truck half-shaft casing pipes. The special rolling technology comprises the following steps: firstly, a pipe body and a flange plate are independently formed; the pipe body is made by rolling a seamless steel pipe; then, four rollers synchronously rotate, a feeding main shaft drives a core mold to push in the steel pipe; the steel pipe rotates with the four rollers; under the effect of the pushing force, the diameter of the pipe body is changed, and the pipe body is elongated; resistance is generated at the transition part of the pipe body through roller steps, so that metal is collected on the wall of the pipe body, and the wall of the pipe body becomes thicker; the shape of the pipe body is formed by squeezing in a roller shape; the flange plate is formed by forging a tyre membrane; mechanical processing is performed on the pipe body and the flange plate; the pipe body and the flange plate are formed by welding. The special rolling technology disclosed by the invention has the characteristics of being simple, and high in product quality.

Description

A kind of spy rolls truck axle tube technique

Technical field

The invention belongs to auto parts machinery field, be specifically related to spy and roll truck axle tube technique.

Background technology

Axle tube is important security personnel's part on automobile axle, it operationally will bear complicated alternate stress effect, and bear larger moment of torsion and vertical load, its shape is the ladder body of flanged (FLGD) variable cross-section, because its reducing coefficient is larger, so it is more difficult that part is shaped, domestic production producer adopts overall loose tooling forging forming technology.Because reducing coefficient is large, so equipment tonnage is comparatively large, poly-material difficulty, percent defective is high, produce noise large, and stock utilization is low.

Summary of the invention

The present invention is intended to the defect overcoming prior art, provides a kind of spy and rolls truck axle tube technique, has technique simple, the feature that product quality is high.

Object of the present invention carrys out specific implementation by the following technical programs:

A kind of spy rolls truck axle tube technique, and comprise the steps, first body and ring flange are independently shaped separately; Body is by roll seamless steel tube.Then four roller synchronous rotaries, drive core to be pushed by steel pipe by feeding main shaft, steel pipe is with four roller synchronous rotaries, and under the effect of thrust, pipe body reducing is extended, transition portion forms resistance by roll step, makes tube body wall gathering metal thickening, and body profile is extruded by roll shape and forms;

Ring flange is by fetal membrane forging and molding, and carry out machined respectively to body and ring flange, body and ring flange are welded.

Further, body is by roll seamless steel tube.

Compared with prior art, the present invention has following beneficial effect:

Present invention process is simple to operate, effectively solves quality problems, improves product quality, extends life of product.

Detailed description of the invention

Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

A kind of spy of embodiment rolls truck axle tube technique, and comprise the steps, first body and ring flange are independently shaped separately; Body is by roll seamless steel tube.Then four roller synchronous rotaries, drive core to be pushed by steel pipe by feeding main shaft, steel pipe is with four roller synchronous rotaries, and under the effect of thrust, pipe body reducing is extended, transition portion forms resistance by roll step, makes tube body wall gathering metal thickening, and body profile is extruded by roll shape and forms;

Ring flange is by fetal membrane forging and molding, and carry out machined respectively to body and ring flange, body and ring flange are welded.

Last it is noted that the foregoing is only explanation embodiments of the present invention; be not limited to the present invention; for a person skilled in the art; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. spy rolls a truck axle tube technique, it is characterized in that, comprises the steps, first body and ring flange are independently shaped separately; Body is by roll seamless steel tube;

Then four roller synchronous rotaries, drive core to be pushed by steel pipe by feeding main shaft, steel pipe is with four roller synchronous rotaries, and under the effect of thrust, pipe body reducing is extended, transition portion forms resistance by roll step, makes tube body wall gathering metal thickening, and body profile is extruded by roll shape and forms;

Ring flange is by fetal membrane forging and molding, and carry out machined respectively to body and ring flange, body and ring flange are welded.

2. spy rolls truck axle tube technique according to claim 1, and it is characterized in that, steel pipe is by roll seamless steel tube.