Method for straightening flame of large-deformation automobile drive axle housing

A technology of flame rectification and drive axle housing, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of low efficiency, high cost, limited deformation, etc., achieve simple equipment and measuring tools, and improve reuse rate , The effect of reducing the cost of correction

Active Publication Date: 2013-04-03
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flame straightening can effectively avoid defects such as workpiece springback and cold work hardening, but the amount of deformation that can be corrected is limited and the efficiency is low. The correction process requires a lot of oxygen and acetylene

Method used

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  • Method for straightening flame of large-deformation automobile drive axle housing
  • Method for straightening flame of large-deformation automobile drive axle housing
  • Method for straightening flame of large-deformation automobile drive axle housing

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Embodiment Construction

[0027] In the present embodiment, a flame rectification method of a large deformation automobile drive axle housing is carried out according to the following steps:

[0028] Step 1: Place the deformed axle housing on the detection platform, measure the distance δ between the center O of the inner circle 6 of the axle housing reinforcement ring and the intersection point M of the centerlines of the two half-shaft casings, and the δ value is the deformation δ value of the axle housing.

[0029] Step 2: Fill the inner cavity of the deformed axle housing with sand with a water content of 4%-8% by weight and a particle size of 0.15mm-1.18mm, and use the inner ring 10 of the reinforcing ring of the deformed axle housing as the main reducer housing The body is sealed, and the left end 7 and the right end 8 of the half-shaft sleeve of the axle housing are sealed with cylindrical wooden plugs respectively; the deformed axle housing is fixed and supported by "V" blocks at the two ends of...

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Abstract

The invention discloses a method for straightening the flame of a large-deformation automobile drive axle housing. The method is characterized in that a deformed axle housing is put on a detection platform to measure the axle housing deformation; sand is fully filled in an inner cavity of the deformed axle housing, the deformed axle housing is sealed and is then put on a 'V'-shaped piece fixed bearing, the other parts of the deformed axle housing are kept suspended in the air, the back side of a working surface of the deformed axle housing is put upwards, and loading application force points for assisting the straightening are positioned on two end positions, at which an axle housing spring seat assembly is installed; and heating wires which have the same length and width and are symmetrically distributed are marked on the axle housing along the longitudinal direction sequentially, acetylene flame is used to move from one ends to the other ends of the heating wires to heat, after each heating is completed, water is adopted to cool the axle housing, and flame heating and loading force applying are repeatedly carried out until the axle housing deformation reaches the tolerance allowed range of the axle housing design. By the method, the material shaping reserve consumption can be effectively avoided, and accordingly, the reutilization ratio of the large-deformation drive axle housing is increased.

Description

technical field [0001] The invention relates to a flame straightening method, in particular to a flame straightening method for a deformed drive axle housing. technical background [0002] The automobile drive axle housing is made of steel and processed by stamping and welding processes. It is the basic part for installing the main reducer, differential, half shaft, wheel hub and suspension. Its main function is to support and protect the main reducer and differential. Gearbox and half shaft etc. When the car is running, due to uneven roads, uneven loads, overloading of the car, etc., the axle housing is prone to overall deformation, resulting in an out-of-tolerance distance between the center of the inner circle of the axle housing reinforcement ring and the intersection of the centerlines of the two half-axle casings, which affects the vehicle's stability. Drive safely. [0003] At present, there are mainly two methods to solve the deformation: mechanical correction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/00B21D3/10B21C51/00
Inventor 宋守许刘志峰沈晔超胡柏林郑尚敏
Owner HEFEI UNIV OF TECH
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