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Friction stir welding fixture and method for aluminum alloy frame

An aluminum alloy frame, friction stir technology, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of difficult clamping and positioning, small welding deformation, small residual stress, etc., and achieve accurate clamping positioning and welding deformation. The effect of small size and low processing cost

Active Publication Date: 2018-06-29
HUNAN JOINFRONT WELDING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing aluminum alloy frame production process generally uses fusion welding to connect the plates. The welding deformation of fusion welding is large, and a large processing allowance needs to be left. It requires high welding environment and welding personnel's skills, and there are problems with poor quality. Stability and other inevitable shortcomings, using friction stir welding for welding, welding deformation is small, the residual stress is small, can eliminate welding defects such as pores, inclusions, cracks, etc. However, the use of friction stir welding to weld the aluminum alloy frame has the following difficulties: due to the characteristics of the aluminum alloy frame structure, such as the shape of the aluminum alloy frame, it is difficult to clamp and position, and it is not easy to ensure that the frame The accuracy of the welded parts is not easy to take out, and in the process of friction stir welding, it is easy to appear the phenomenon of incomplete penetration

Method used

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  • Friction stir welding fixture and method for aluminum alloy frame
  • Friction stir welding fixture and method for aluminum alloy frame
  • Friction stir welding fixture and method for aluminum alloy frame

Examples

Experimental program
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Effect test

Embodiment 1

[0036] like Figure 1 to Figure 5As shown, the friction stir welding fixture of the aluminum alloy frame in this embodiment, the aluminum alloy frame 1 includes two horizontal plates 11 and two vertical plates 12, specifically, the horizontal plate 11 and the vertical plate 12 are industrial The font plate, the clamp includes a support frame 2 and two support boxes 3 for clamping and fixing the end of the horizontal plate 11 against the end side of the vertical plate 12, and the support frame 2 includes a support surface 21 and support legs 22 , the supporting legs 22 are detachable supporting legs 22 that can be partially or completely disassembled for the aluminum alloy frame body 1 to take out. The supporting boxes 3 are arranged on both sides of the supporting surface 21. The positioning mechanism 32 for positioning and locking, the pressing mechanism 33 for compressing the horizontal plate 11 in the vertical direction, the side positioning mechanism 34 for positioning and...

Embodiment 2

[0043] The friction stir welding jig of the aluminum alloy frame of this embodiment is basically the same as that of Embodiment 1, the main difference is that, as Image 6 and Figure 7 As shown, the support frame 2 of this embodiment further includes an adjustment guide rail 23 , and the support legs 22 are arranged on the adjustment guide rail 23 and can move along the adjustment guide rail 23 to adjust the distance between the support legs 22 . Specifically, the supporting leg 22 includes a front supporting leg and a rear supporting leg, wherein the rear supporting leg is arranged on the adjusting guide rail 23, and the front supporting leg is a detachable supporting leg that can be freely installed and disassembled. The support frame 2 of the present embodiment can be used for plates with large size changes, especially horizontal plates 11 with large length changes. For a short period of time, adjust the distance between the rear support legs. Since the front support legs...

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Abstract

The invention discloses a friction stir welding fixture for an aluminum alloy frame. The aluminum alloy frame comprises horizontal plates and vertical plates. The friction stir welding fixture comprises a supporting frame and two supporting boxes. The supporting frame comprises a supporting surface and supporting legs. The supporting legs are detachable supporting legs and are arranged on the twosides of the supporting surface. Each supporting box comprises a box body, a positioning mechanism, a pressing mechanism, lateral positioning mechanisms and lateral clamping mechanisms, wherein the positioning mechanism and the pressing mechanism are arranged on the upper surface of the box body, the lateral positioning mechanisms are arranged on the side faces of the box body, and the lateral clamping mechanisms are also arranged on the side faces of the box body. A welding method comprises the steps of clamping of the horizontal plates and the vertical plates, lateral clamping, welding, taking out of a workpiece, and the like. The friction stir welding fixture and method for the aluminum alloy frame have the advantages that the welding deformation is small, clamping and positioning are accurate, the workpiece can be taken out easily after being welded and is not prone to deformation, the welding quality is table, chamfering is not needed, no machining allowance needs to be reserved,and the machining cost is low.

Description

technical field [0001] The invention belongs to the technical field of friction stir welding, and in particular relates to a friction stir welding jig and a welding method for an aluminum alloy frame. Background technique [0002] The existing aluminum alloy frame production process generally uses fusion welding to connect the plates. The welding deformation of fusion welding is large, and a large processing allowance needs to be left. Inevitable shortcomings such as stability, friction stir welding is used for welding, with small welding deformation and small residual stress, which can eliminate welding defects such as pores, inclusions, cracks, etc., and does not produce arc light, smoke, noise and other pollution. The quality of the product can be improved However, the use of friction stir welding to weld the aluminum alloy frame has the following difficulties: due to the characteristics of the aluminum alloy frame structure, such as the shape of the aluminum alloy frame,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26B23K37/04
CPCB23K20/122B23K20/126
Inventor 蒋习均钟南李志明周长兴
Owner HUNAN JOINFRONT WELDING TECH
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