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Welding fixture for ring on bottom of carrier rocket propellent tank

A technology for propellant storage tanks and launch vehicles, which is applied to the tooling field of circular friction stir welding at the bottom of multi-specification launch vehicle propellant storage tanks. problems, to achieve the effect of improving the utilization rate of tooling, simplifying the structure, saving time and manpower

Inactive Publication Date: 2016-07-06
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems such as the large structure of the friction stir welding tool for the bottom ring of the tank, the low utilization rate of the tool, and the low production efficiency, the purpose of the present invention is to provide a friction stir welding tool, which is specially used for the bottom ring of the rocket propellant tank. Assembling and welding, it can realize friction stir welding assembly and welding of various specifications of box bottom rings

Method used

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  • Welding fixture for ring on bottom of carrier rocket propellent tank
  • Welding fixture for ring on bottom of carrier rocket propellent tank
  • Welding fixture for ring on bottom of carrier rocket propellent tank

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0027] It can be seen from the background technology that today's storage tanks have diversified tasks, and the processing size is becoming more and more complicated. The longitudinal seam welding of the melon petals at the bottom of the tank is the welding structure with the largest number. In reality, it is necessary to process the longitudinal seams of melon petals of various sizes and specifications at the same station, and the production of tooling with various sizes and the repeated lifting and positioning of the tooling become the bottleneck that limits the efficiency of the product.

[0028] The invention provides a frock for multi-size longitudinal seam welding at the bottom of a bo...

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Abstract

A welding fixture for a ring on the bottom of a carrier rocket propellent tank comprises an installation base and multiple groups of combined clamp assemblies and is characterized in that the combined clamp assemblies are installed on the installation base and can move along the radial direction of the installation base; each combined clamp assembly comprises a back face rigid supporting component and a front face compacting component; an installation interface is disposed on the rigid supporting component; and the front face compacting component is connected to the rigid supporting component by the interface. The welding fixture provided by the invention has the advantages that the technical problems of high fixture manufacture cost in existing assembly and complex assembly processes are solved; a fixture structure is simplified; production and manufacture efficiency is increased; and a fixture utilization rate is increased.

Description

technical field [0001] The invention relates to a friction-stir welding tool, in particular to a tool for friction-stir welding of circular rings at the bottom of propellant storage tanks of launch vehicles with multiple specifications. Background technique [0002] The ring at the bottom of the carrier rocket tank is usually welded by 4~6 melon petals in the way of longitudinal seam butt joint, which is one of the most important welding structures in the propellant tank. In order to ensure the size and welding stability after welding, the Assemble and fix the workpiece. [0003] In the manufacturing process of tank components, fusion welding is usually used, but due to the large amount of heat input in the fusion welding process, it is easy to produce obvious post-weld deformation, so all parts are usually fixed in one-piece assembly before welding to limit out of shape. The existing assembly form needs to design special full-size fixed tooling for different specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26B23K37/04
Inventor 徐文豪崔凡姚君山康志明贾洪德黄征赵萧沈浩然
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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