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Friction stir welding stirring head

A friction stir welding and stirring head technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of low welding quality and efficiency, poor heat dissipation, etc., to reduce heat concentration, improve welding quality and efficiency , good stability effect

Pending Publication Date: 2022-01-21
湖南坤鼎数控科技有限公司
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  • Abstract
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Problems solved by technology

[0004] In the friction stir welding process, the stirring head is the only part that the spindle workpiece contacts, and is the core part of the friction stir welding. The structure and form of the stirring head will directly affect the quality of the product weld and welding efficiency. Some current stirring heads are used Problems of slippage, poor heat dissipation, and low soldering quality and efficiency

Method used

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] see Figure 2-5 , The embodiment of the present invention provides a friction stir welding stirring head, which includes a clamping part 1 , a shoulder part 2 and a needle tip part 3 .

[0023] The clamping part 1 is used to install the stirring head, that is, to fix the stirring head on the clamping device, so as to realize the synchronous rotation of the stirring head and the clamping device. The shoulder part 2 is a transition part between the clamping part 1 and the needle tip part 3 , and is used for connecting the clamping part 1 and the needle tip part 3 . The needle point 3 is used...

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Abstract

The invention belongs to the technical field of welding, and provides a friction stir welding stirring head which comprises a clamping part, a shaft shoulder part and a needle point part. The clamping part with an arc-shaped groove is arranged, so that the clamping friction force can be effectively increased, the fixing effect is improved, the stirring head has better stability in the using process, and sliding in the using process is avoided. An annular groove formed in the shaft shoulder part can increase the heat dissipation area, so that heat concentration generated during welding is effectively reduced. A semicircular groove formed in the needle point part can form an isolated cavity in the welding process, so that plasticized base material is fully stirred and fused in the cavity. Threads arranged on the needle point part and an arc-shaped structure at the front end of the taper position enable the taper position to be inserted into the base material more easily, the flowing direction of the plasticized base material can be guided, a stirring friction welding system for guiding, stirring and mixing of the plasticized base material can be formed in cooperation with the semicircular groove, and the welding quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to a friction stir welding stirring head. Background technique [0002] Friction stir welding is the use of indirect friction heat to achieve the connection of plates. This method breaks the original concept that friction welding is limited to the welding of circular cross-section materials. It is the latest welding technology for aluminum and its alloys. Friction stir welding technology can be replaced to a certain extent. Traditional fusion welding, resistance electric welding, and riveting welding technologies are especially suitable for welding large parts. Friction stir welding technology has shown obvious advantages in aluminum alloy welding, and has been widely promoted in aviation, rail and other industrial fields. [0003] The friction stir welding method is the same as the conventional friction welding, which also uses friction heat and plastic deformation heat as the wel...

Claims

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Application Information

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IPC IPC(8): B23K20/12
CPCB23K20/1255
Inventor 雷勋发罗益吴靖凡
Owner 湖南坤鼎数控科技有限公司
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