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Single-sided resistance spot-welding welding tool and welding method for railway vehicle

A technology of resistance spot welding and rail vehicles, which is applied in the field of rail vehicles, can solve problems such as not being able to meet production requirements, and achieve the effect of facilitating processing and promoting development

Inactive Publication Date: 2019-10-25
CRRC SIFANG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the traditional resistance spot welding process is still used, the existence of indentation obviously cannot meet the production requirements

Method used

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  • Single-sided resistance spot-welding welding tool and welding method for railway vehicle
  • Single-sided resistance spot-welding welding tool and welding method for railway vehicle
  • Single-sided resistance spot-welding welding tool and welding method for railway vehicle

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] It should be noted that, in the description of the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate directions or positions The terms of the relationship are based on the orientation or positional relationship shown in the drawings, which are for convenience of desc...

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Abstract

The invention discloses a single-sided resistance spot-welding welding tool and welding method for railway vehicles. The welding tool comprises a copper platform, a compression component and a liftingcomponent, wherein the compression component comprises a transverse beam and a compression device; the transverse beam is located above the copper platform and moves in the longitudinal direction ofthe copper platform; the compression device is used for compressing and gluing a workpiece to the copper platform so as to avoid the relative displacement between the workpiece and the copper platform; the lifting component comprises a lifting and driving component and a lifting rod; one end of the workpiece is upwarped through the lifting component; and a welding point on the curved surface shapeof the workpiece is tangent to the copper platform so as to be matched with the walking track of the curved surface workpiece during spot welding and facilitate the processing of the workpiece. On the one hand, the copper platform is used as the negative pole of single-sided resistance spot welding, and on the other hand, the copper platform is used for ensuring the flatness of the workpiece, sothat no indentation occurs on one side of the workpiece after spot welding, and the processing requirements are met. The welding tool can meet the requirements of seamless processing of flat workpieces and curved surface workpieces, and has a positive promotion effect on the development of the railway vehicle technology in China.

Description

technical field [0001] The invention relates to the technical field of rail vehicles, in particular to a single-sided resistance spot welding welding tool and welding method for rail vehicles. Background technique [0002] Resistance spot welding uses a spot welding machine to weld crossed steel bars, which can be formed into steel mesh or skeleton instead of manual binding. Compared with manual binding, resistance spot welding has the characteristics of small welding deformation, high efficiency, labor saving, good product integrity, material saving, and cost reduction. It is widely used in stainless steel and carbon steel welding. However, there are indentation. [0003] At present, during the processing of the carriages of rail vehicles, in order to meet the production requirements of green and environmental protection, the carriages are not coated after welding and forming. In order not to affect the aesthetics, the requirements for the surface quality of the carriage ...

Claims

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Application Information

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IPC IPC(8): B23K11/11B23K11/36
CPCB23K11/11B23K11/36
Inventor 刘子静杨海刘冰王晓峰史学海邱裕强宋朋
Owner CRRC SIFANG CO LTD
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