Integral thermal expansion manufacturing method for heavy-duty vehicle drive axle housing

A technology for driving axle housings and heavy-duty vehicles, which is applied in the field of metal processing, and can solve the problems of large machining volume, large welding workload, and low material utilization rate, so as to reduce production costs, increase material utilization rate, and improve product quality. Effect

Active Publication Date: 2016-08-17
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] The technical problem to be solved by the present invention is to overcome the problems of low material utilization rate and large amount of mechanical processing in the existing stamping welding technology; long stamping welding production process chain, large welding workload, poor product rigidity, and low service life. , providing an overall thermal expansion manufacturing method for a heavy-duty vehicle drive axle housing

Method used

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  • Integral thermal expansion manufacturing method for heavy-duty vehicle drive axle housing
  • Integral thermal expansion manufacturing method for heavy-duty vehicle drive axle housing
  • Integral thermal expansion manufacturing method for heavy-duty vehicle drive axle housing

Examples

Experimental program
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Effect test

Embodiment 1

[0108] refer to figure 2 , for the 485 type load capacity shown in the figure is the driving axle housing of 13T car, adopt the step of the integral thermal expansion manufacturing method of heavy-duty vehicle driving axle housing of the present invention as follows:

[0109] 1. Determine the structural size of the tube blank used:

[0110] refer to image 3 , according to the geometric characteristics and size parameters of the drive axle housing, after selecting the appropriate bulging ratio, the specification of the tube blank is determined to be the diameter D 0 ,D 0 =219mm, wall thickness H 0 , H 0 = 16mm; and according to the principle of equal plastic deformation volume, the blanking length is determined through calculation, that is, the length of the tube blank L 0 =1295±2mm.

[0111] 2. Tube blank preforming before thermal expansion:

[0112] refer to Figure 4 , first perform two heat shrinking steps on the tube blanks on both sides of the bulging zone (abou...

Embodiment 2

[0122] refer to figure 2 , the present embodiment is a 498 type drive axle housing with a load capacity of 13T~15T that is one size larger than the 485 type drive axle housing model of embodiment 1. The steps of the overall thermal expansion manufacturing method of the heavy-duty vehicle drive axle housing according to the present invention are as follows:

[0123] 1. Determine the size specification of the tube blank used:

[0124] refer to image 3 , according to the geometric characteristics and size parameters of the drive axle housing, because the central pipa hole and the outer shell dimensions are larger than those of the 485 type axle housing, the size of the tube blank used should be determined after calculating the bulging ratio. Its outer diameter is D 0 ,D 0 =245mm, wall thickness H 0 , H 0 = 16mm; and according to the principle of equal volume of plastic deformation, the length of blanking is determined after calculation, that is, the length of the tube bla...

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Abstract

The invention discloses an overall thermal expansion manufacturing method for a heavy-duty car drive axle housing, and overcomes the problems that currently, material utilization rate is low, machinery processing load is heavy, the punching and welding production process chain is long, welding workload is heavy, product rigidity is low, and service life is short. The method includes 1, determining the structural size of a used billet, namely selecting the appropriate expansion ratio according to geometrical features and size parameters of an axle housing to be processed, determining the diameter of the specification of the billet to be D0, the wall thickness to be H0 and the length to be L0; 2, preforming the billet before thermal expansion; 3, cutting prefabricated hole in the middle of the preformed billet, namely cutting axial elongated prefabricated through holes in the bedding face after the middle of the billet is flattened and allowing an upper prefabricated through hole and a lower prefabricated through hole to be centered; 4, preforming in the manner of thermal expansion; 5, forming in the manner of thermal expansion; 6, shaping, namely eliminating drive axle housing lute holes and unrounded degree of a lateral flange after twice thermal expansions and allowing the radius of the large arc of an axle housing transition area to be 200mm.

Description

technical field [0001] The invention relates to a processing method in the field of metal processing, more precisely, the invention relates to an integral thermal expansion manufacturing method of a drive axle housing of a heavy-duty vehicle. Background technique [0002] The drive axle of a heavy-duty vehicle is at the end of its transmission system, and it is mainly composed of the final drive, differential, half shaft and drive axle housing. Its functions are: [0003] 1. Transmit the engine torque from the cardan transmission to the driving wheels through the final drive, differential, half shaft, etc., so as to reduce the speed and increase the torque; [0004] 2. Change the direction of torque transmission through the bevel gear pair of the main reducer; [0005] 3. See figure 1 , through the differential to realize the differential effect of the wheels on both sides to ensure that the inner and outer wheels turn at different speeds. The overall structure of the dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D31/04
Inventor 韩英淳刘化民何东野叶辉于多年王源
Owner JILIN UNIV
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