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After-heating laser welding method for jointed gear ring and gear

A technology of laser welding and combining teeth, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as cracks and gear assembly welding deformation, eliminate cracks at the bottom of the weld, reduce welding stress, reduce Effect of Welding Stress

Active Publication Date: 2012-05-30
SHANGHAI AUTOMOBILE GEAR WORKS
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a laser welding method for combining the gear ring and the gear after heat, which mainly solves the welding deformation and generation of the gear assembly in the process of combining the bevel and the gear after heat laser welding. crack problem, and formed a set of laser welding process suitable for mass production after heat

Method used

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  • After-heating laser welding method for jointed gear ring and gear
  • After-heating laser welding method for jointed gear ring and gear
  • After-heating laser welding method for jointed gear ring and gear

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Embodiment Construction

[0033] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0034] This embodiment includes the following steps:

[0035] The first step will be as figure 1 The shown combined bevel and gear are pretreated separately, and the specific steps are as follows:

[0036] 1.1) Machining: The bevel and gear will be combined with thermal pre-machining, including finish turning, gear and reverse bevel machining, etc.

[0037] 1.2) Heat treatment: adopt carburizing, quenching and tempering heat treatment methods;

[0038] The quenching refers to quenching by press quenching to ensure the flatness of the press-fit large surface and the roundness of the press-fit aperture;

[0039] ...

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Abstract

The invention relates to an after-heating laser welding method for a jointed gear ring and a gear and belongs to the technical field of a vehicle transmission. The after-heating laser welding method comprises the following steps: respectively preprocessing a jointed bevel gear and the gear; performing after-heating processing pressing and electromagnetic preheating treatment for a welding area; and lastly, placing the gear on a turntable, rotating the turntable for 180 degrees, jacking the gear out of a platform by a vertical shaft under the turntable, clamping the gear from an inner hole, pressing downward under the action of a reverse thrust bearing, and performing spot welding, pre-welding and deep fusion welding in turn according to an initial position for welding. According to the after-heating laser welding method, the problem that a gear assembly is subjected to welding deformation and crack generation during an after-heating laser welding processing process of the jointed bevel gear and the gear is solved, and a set of after-heating laser welding technical parameters suitable for bath production is formed.

Description

technical field [0001] The invention relates to a method in the technical field of automobile transmissions, in particular to a laser welding method for combining a gear ring and a gear after heat. Background technique [0002] As an internationally advanced transmission, DCT transmission has the characteristics of energy saving and superior shifting performance. In order to achieve the goals of saving space, compact structure, reducing weight and shifting comfort, most of the gear assembly structure can only be laser welded. Or the way of electronic speed welding. Compared with electronic speed welding, laser welding has the characteristics that it does not need to be carried out under vacuum, and has the advantage of convenient operation for mass production. [0003] After searching the existing technologies, it is found that laser welding is a process that uses high-intensity laser beams to interact with metals to melt the metals to achieve a good combination of differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/20B23K26/42B23K26/21B23K26/70
Inventor 杨立黄明礼马森林许建兴张轶夏瑞春杨晨
Owner SHANGHAI AUTOMOBILE GEAR WORKS
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