Water cooling connection device for friction stir welding of high melting point materials

Abstract

The invention discloses a water-cooled connection device for friction stir welding of a high melting point material. The water-cooled connection device for friction stir welding of the high melting point material comprises a main shaft, a cooling cutter handle and a stirring head; a taper hole is machined in the bottom of the main shaft; a shaft shoulder is arranged in the middle of the cooling cutter handle; a circular cone face matched with the taper hole of the main shaft is machined on the outer wall of the portion, on the upper portion of the shaft shoulder, of the cooling cutter handle,and an installing hole used for installing a stirring head is machined in the center of the portion, on the lower portion, of the cooling cutter handle; and a stirring head transition sleeve is fixedto the bottom of the cooling cutter handle through a fastening screw I, and is connected and fixed to the stirring head through a fastening screw II. According to the water-cooled connection device for friction stir welding of the high melting point material, the water-cooled connection device is adopted, efficient connection of the device main shaft and the stirring head is achieved; and coolingis performed on the cutter handle so that cooling on the main shaft and the stirring head is achieved, damage to the device main shaft is avoided, the material requirement on a stirring head clampingpart and the stirring head transition sleeve is lowered, and the service life of the stirring head is prolonged.

Description

technical field [0001] The invention relates to the field of welding, in particular to a water-cooling connection device in friction stir welding of high melting point materials. Background technique [0002] At present, in the process of friction stir welding of high melting point materials, the clamping part of the stirring head is transferred to the welded transmission shaft. Due to the accumulation of heat, the transmission temperature rises, resulting in the temperature of the final transmission shaft and bearings being too high. The welding equipment cannot be used normally, or even dangerous. At the same time, the high temperature has high requirements on the material properties of the clamping part of the stirring head. Contents of the invention [0003] According to the above-mentioned technical problems, a water-cooled connection device for friction stir welding of high melting point materials is provided, which is used to solve the problem of heat transfer from ...

AI Technical Summary

Problems solved by technology

[0003] According to the above-mentioned technical problems, a water-cooled connection device for friction stir welding of high melting point materials is provided, which is used to solve the problem of heat transfer from the clamping part of the stirring head to the welding drive shaft in the existing friction stir welding process. The accumulation of the transmission temperature increases the temperature of the final drive shaft and bearings, which eventually makes the welding equipment unable to work normally, and even causes dangerous defects.

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