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Center water-cooled stirring and friction processing tool

A technology of friction stir and processing tools, applied in the field of friction stir processing (or friction stir welding)

Inactive Publication Date: 2012-08-08
郑英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the molding process, due to the high temperature of the stirring tool and the combined stress of torsion and bending, the stirring needle is easy to wear and break
The reason is that the frictional heat makes the working temperature of the stirring needle very high, and the high temperature greatly reduces the strength and hardness of the stirring needle

Method used

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  • Center water-cooled stirring and friction processing tool
  • Center water-cooled stirring and friction processing tool
  • Center water-cooled stirring and friction processing tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Such as figure 1 , figure 2 and image 3 As shown, a central water-cooled friction stir machining tool includes a stirring head 7 connected to a main shaft 14 of a machine tool. The stirring head 7 has a handle 1 , a shaft shoulder 2 and a stirring needle 3 , the handle 1 is provided with a tension rod 8 , and the tension rod 8 and the handle 1 are connected by threads. There is a water pipe channel 9 and a drain hole 10 inside the tension rod 8, and an annular water outlet pipe 12 is arranged outside the tension rod 8, and the annular water outlet pipe 12 has a water outlet 13, and there is a water outlet sealing ring between the annular water outlet pipe 12 and the tension rod 8 18. The water pipe channel 9 has an annular sealing groove 11; the handle 1 has a blind hole 6 leading to the center of the stirring needle 3. A cooling water pipe 4 is arranged in the blind hole 6 and the water pipe passage 9 , and there is a drainage gap 5 between the cooling water pipe...

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PUM

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Abstract

A center water-cooled stirring and friction processing tool comprises a stirring head. The stirring head comprises a handle portion, a shaft shoulder, and a stirring pin. A blind hole leading to the center of the stirring pin is provided in the handle portion. A cooling water pipe is arranged in the blind hole. A drainage gap is provided between the cooling water pipe and the blind hole. The cooling water pipe is connected to a tap water pipe, and is equipped with a water flow regulating valve. With the tool designed in the invention, the temperature in the center of the stirring pin can be reduced greatly, the strength of the stirring pin can be improved, the service life of the stirring pin can be extended, and temperature can be controlled by using the water flow regulating valve. The tool in the invention has a simple structure and is convenient to use.

Description

technical field [0001] The invention relates to the field of friction stir processing (or friction stir welding) of metal materials or metal matrix composite materials, and provides a central water-cooled friction stir processing tool. Background technique [0002] Friction stir welding is a solid phase welding technology invented by the British Welding Institute in 1991. The basic principle is to use a stirring tool with a shaft shoulder and a stirring pin to rotate at a high speed. The friction between the shaft shoulder and the stirring pin and the solid material to be welded generates a large amount of frictional heat, and at the same time exerts a large pressure on the material to be welded, thereby Make the material adjacent to the stirring pin and the shoulder enter into a plastic state. When the shoulder is in contact with the surface of the material, the stirring tool moves at a certain speed along the weld, so that the plasticized material is transferred from the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12C22F1/00
Inventor 郑英刘让贤
Owner 郑英