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Hollow half shaft and manufacturing method thereof

A technology of hollow half shaft and manufacturing method, which is applied in the field of auto parts, can solve the problems of lossy half shaft quality and low spline strength, and achieve the effect of reducing weight, high spline strength and ensuring quality

Pending Publication Date: 2019-08-16
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the spline strength is low and damage the quality of the half shaft, and provide a hollow half shaft with high spline strength and no damage to the quality of the half shaft and its manufacturing method

Method used

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  • Hollow half shaft and manufacturing method thereof
  • Hollow half shaft and manufacturing method thereof
  • Hollow half shaft and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] see Figure 1 to Figure 8 , a hollow half shaft, including a flange 4, an intermediate shaft 2 and a spline end 3, the head end of the intermediate shaft 2 is connected to the flange 4, and the tail end of the intermediate shaft 2 is connected to the spline end 3 connection; the intermediate shaft 2 is a hollow structure, including a middle long tube 21 and a long tube inner chamber 22 inside; the spline end 3 includes an outer spline column 31 and a spline pattern 1 set on its side circumference, The inner end of the outer spline column 31 is connected to the tail end of the middle long tube 21 through the transition section 5, and the transition section 5 includes the transition section tube 51 and the transition chamber 52 provided inside; the outer spline column 31 is hollow structure, the inside of the outer spline column 31 is provided with an inner spline cavity 32, the wall thickness of the outer spline column 31 is greater than that of the middle long tube 21, ...

Embodiment 2

[0076] Basic content is the same as embodiment 1, the difference is:

[0077] Structurally: the first cavity surface 54 is connected to the inner cavity 22 of the long tube after being passed through the spline inner flash 33 , and the diameter of the first cavity surface 54 is longer than the length of the side wall 53 of the cavity.

[0078] On the manufacturing method: the manufacturing method includes the manufacturing process of the outer spline column 31, the manufacturing process refers to: first select the middle long tube 21 of a predetermined length, and a long tube inner cavity 22 is arranged in it, and then select a spline of a predetermined length Long tube 35, the inside of this spline long tube 35 is provided with internal spline cavity 32 and transition cavity 52, the wall thickness of spline long tube 35 is greater than the tube thickness of middle long tube 21, then spline long tube 35 and middle The tail end of the long tube 21 is welded. After welding, the ...

Embodiment 3

[0080]Basic content is the same as embodiment 1, the difference is:

[0081] Structurally: the outer spline column 31 is a solid structure, the radius of the cross section of the outer spline column 31 is larger than the tube thickness of the middle long tube 21, and the transition cavity 52 includes a cavity side wall 53 and a first cavity connected to its two ends Surface 54, tail cavity surface 55, the diameter of the first cavity surface 54 is longer than the length of the cavity side wall 53, the tail cavity surface 55 is connected with the spline step hole 34 provided in the outer spline column 31, the first cavity surface 54 is splined The inner flash 33 is connected with the inner cavity 22 of the long tube afterward.

[0082] On the manufacturing method: the manufacturing method includes the manufacturing process of the outer spline column 31, the manufacturing process refers to: first select a predetermined length of the middle long tube 21, which is provided with a ...

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Abstract

The invention provides a hollow half shaft, which comprises a flange plate, an intermediate shaft and a spline end. The intermediate shaft is of a hollow structure and comprises an intermediate long pipe and a long pipe inner cavity formed in the intermediate long pipe; the spline end comprises an outer spline column and spline patterns arranged on the side wall of the outer spline column; the inner end of the outer spline column is connected with the tail end of the intermediate long pipe through a transition section, and the transition section comprises a transition pipe and a transition cavity formed in the transition pipe; and according to the structure of the outer spline column, when the outer spline column is of a solid structure, the radius of the cross section of the outer splinecolumn is larger than the pipe thickness of the intermediate long pipe, when the outer spline column is of a hollow structure, an inner spline cavity is formed in the outer spline column, and the wallthickness of the outer spline column is larger than the pipe thickness of the intermediate long pipe. According to the hollow half shaft, the weight is low, the spline strength is high, and the quality of the half shaft is not damaged.

Description

technical field [0001] The invention relates to a drive shaft, which belongs to the technical field of auto parts, and in particular to a hollow half shaft and a manufacturing method thereof, which are specifically suitable for improving the strength of splines on the basis of reducing weight without compromising the quality of the half shaft. Background technique [0002] The half shaft is also called the drive shaft. It is the shaft that connects the differential with the driving wheels. Its main function is to transmit torque. Most of the current half shafts are solid structures. Under the trend of lightweight vehicles, they can no longer meet the demand. [0003] The application publication number is CN107283122A, and the application publication date is October 24, 2017. The invention patent application discloses a manufacturing process of the hollow axle shaft of an automobile, which includes the following steps: forging flange blanks; flange shape turning; flange drilli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B35/14B23P15/00B23K20/12
CPCB60B35/14B23P15/00B23K20/122B23P2700/50
Inventor 付星星张宇吴宪华张龙李少兵
Owner DONGFENG COMML VEHICLE CO LTD