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A local variable diameter stirring head

A stirring head, partial technology, applied in the field of local variable diameter stirring head, can solve the problems of material overflowing the weld, affecting the quality of the weld, intruding into the material, etc.

Active Publication Date: 2022-07-08
安徽万宇机械设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the front shoulder of the stirring head will intrude into the material during friction stir welding of curved surfaces and affect the quality of the weld seam, and the single small shoulder stirring head will easily cause the material to overflow the weld seam , so as to provide a partially variable-diameter stirring head and welding equipment having the same

Method used

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  • A local variable diameter stirring head
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  • A local variable diameter stirring head

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Embodiment 1

[0031] like Figure 1-6 As shown, this embodiment provides a partially variable diameter stirring head, which includes a stirring needle 3, a shaft shoulder, a stirring head transition end 6 and a clamping end 2, the shaft shoulder, stirring head transition end 6 and clamping end 2 The stirring needles 3 are sequentially threaded from bottom to top, and are locked and fixed by the stirring head tightening nut 1 as the second fastener; wherein, the shaft shoulder includes a plurality of movable shaft shoulder blocks 5; The moving shoulder block 5 is pivotally connected to the stirring needle with the stirring needle as a pivot, and the stirring needle plays the role of installation and positioning; the inner side of each of the moving shoulder blocks 5 has an arc surface 15, The arc-shaped surface 15 is used as a covering surface, which overlaps the outer side of the adjacent movable shoulder block 5. Preferably, the adjacent movable shoulder block 5 has an arc-shaped surface 1...

Embodiment 2

[0039] The present embodiment provides a friction stir welding device, including a drive motor, a main shaft and a stirring head, wherein the stirring head is the locally variable diameter stirring head described in Embodiment 1. The friction stir welding equipment provided in this embodiment is suitable for reducing the intrusion amount of the shaft shoulder during the friction stir welding of the curved surface, and effectively improving the welding quality. When the material is welded, under the action of the main shaft rotation, the rotation of the stirring head generates centrifugal force, and the moving shoulder block is thrown out to the maximum diameter state. When the end point of the convex surface of the stirring needle or the lowest point of the concave surface of the stirring needle as the base point, the front end of the shoulder of the stirring head contacts the welding material, and the moving shoulder block is subject to the resistance of the material to it. T...

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Abstract

The invention relates to the technical field of friction stir welding, in particular to a locally variable diameter stirring head. The partially variable-diameter stirring head has a stirring needle and a shaft shoulder. The shaft shoulder includes a plurality of moving shaft shoulder blocks, and the moving shaft shoulder blocks are pivotally connected to the stirring needle. Each of the moving shaft shoulder blocks The inner side has an arc-shaped surface, the arc-shaped surface is overlapped with the outer side of its adjacent movable shoulder block, and there is an arc-shaped gap between the bottom edges of the two adjacent movable shaft shoulder blocks. The arc-shaped gap The width of the shaft can be changed with the different pivoting movements of the movable shoulder blocks on both sides, so that the working end face of the shaft shoulder has several arc-shaped gaps with variable width, which can reduce the shoulder when the surface friction stir welding is performed. There is no need to install shoulders of multiple sizes to achieve local changes in the diameter of the shoulders, which can effectively improve the welding quality.

Description

technical field [0001] The invention relates to the technical field of friction stir welding, in particular to a locally variable diameter stirring head. Background technique [0002] Friction stir welding (FSW) is an advanced welding technology with the advantages of low welding stress, green and pollution-free, and is widely used in aerospace, automobile and ship fields. The traditional FSW welding is carried out on the gantry type FSW welding machine, but the gantry type FSW welding machine only has three moving directions of XYZ and can only perform conventional two-dimensional welding. In the actual production process, various complex three-dimensional curved workpieces are used. In order to realize the welding of these three-dimensional curved workpieces, scholars have proposed a FSW robot welding machine technology. The FSW robot has multiple degrees of freedom and can realize various complex surface welding. [0003] When the FSW robot is welding, in order to ensur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/12B23K20/26
Inventor 万龙温琦黄体方黄永宪
Owner 安徽万宇机械设备科技有限公司