Resistance spot welding method and system suitable for steel and aluminum vehicle body mixed-line production

A technology of resistance spot welding and car body, applied in resistance welding equipment, resistance electrode holder, electrode maintenance, etc., can solve the problem of inability to achieve collinear production

Inactive Publication Date: 2019-01-11
ANHUI JEE AUTOMATION EQUIP CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Due to the large difference in physical and metallurgical properties between steel and aluminum alloy, the current steel body and aluminum body are produced by welding with a set of resistance spot welding systems, which cannot achieve collinear production

Method used

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  • Resistance spot welding method and system suitable for steel and aluminum vehicle body mixed-line production
  • Resistance spot welding method and system suitable for steel and aluminum vehicle body mixed-line production
  • Resistance spot welding method and system suitable for steel and aluminum vehicle body mixed-line production

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] According to the robot resistance spot welding system of the present invention, the steel body and the aluminum body are welded at the same station to realize collinear production.

[0034] Considering the differences in physical and metallurgical properties of steel plates and aluminum alloys, the requirements for welding parameters are quite different, and different welding parameters are set for this purpose. Compared with steel, aluminum alloy spot welding requires higher welding current, shorter welding time (the welding current of aluminum alloy is about 3 times that of steel, and the welding time is about 1 / 3 of steel) and higher electrode pressure .

[0035] Considering the dif...

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Abstract

The invention discloses a resistance spot welding system and method suitable for steel and aluminum vehicle body mixed-line production. The resistance spot welding system comprises a welding robot body, a welding gun, a robot control cabinet, a welding gun control cabinet, a first cap changing and sharpening machine for a steel vehicle body and a second cap changing and sharpening machine for an aluminum vehicle body, the welding gun control cabinet is used for storing a steel vehicle body welding program and an aluminum vehicle body welding program, welding parameters set in the steel vehiclebody welding program are used for welding of steel pieces, welding parameters set in the aluminum vehicle body welding program are used for welding of aluminum pieces, and the welding gun control cabinet is used for calling a corresponding vehicle body welding program, controlling the welding gun to cooperate with the cap changing and sharpening machines and performing the vehicle body welding flow after a vehicle body welding signal is received. According to the system and the method, the optimized-configuration spot welding system is adopted, and line-sharing production of a steel piece vehicle body and an aluminum piece vehicle body can be realized.

Description

technical field [0001] The invention relates to a resistance spot welding method and a resistance spot welding system suitable for the mixed line production of steel-aluminum car bodies. Background technique [0002] Resistance spot welding is to press the workpiece to be welded between the two electrodes, and pass the current, and use the resistance heat generated by the current flowing through the contact surface of the workpiece and the adjacent area to heat it to a molten or plastic state, and form nodules after cooling, so that A method of forming a metal bond. [0003] like figure 1 As shown, resistance spot welding is mainly divided into four processes: (A) preparation; (B) preload; (C) welding; (D) hold; (E) stop. [0004] As an important connection method, resistance spot welding has become the dominant welding process in thin plate structures represented by body-in-white, such as figure 2 As shown, the main equipment of robot resistance spot welding includes we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/11B23K11/30B23K11/31B23K11/36
CPCB23K11/115B23K11/3063B23K11/3072B23K11/314B23K11/36
Inventor 刘蕾赵彤彤汤伟汤东华王静
Owner ANHUI JEE AUTOMATION EQUIP CO LTD
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