Split type stirring head

Abstract

The invention provides a split type stirring head. The split type stirring head comprises a clamping part, a stirring pin, a shaft shoulder and multiple screws. The clamping part comprises a clamping handle, a shaft shoulder connecting part and a stirring pin connecting part, the shaft shoulder connecting part is installed at one end of the clamping handle, the stirring pin connecting part is arranged at one end, away from the clamping handle, of the shaft shoulder connecting part, and the stirring pin is arranged at one end, away from the shaft shoulder connecting part, of the stirring pin connecting part; a through hole matched with the stirring pin connecting part is formed in the shaft shoulder, threaded grooves are formed in the two ends of the shaft shoulder respectively and equal identically, internal thread holes matched with the screws are formed in the shaft shoulder, threaded protrusions capable of being matched with the threaded grooves are arranged at one end, away from the clamping part, of the shaft shoulder connecting part, and internal thread holes corresponding to the internal thread holes in the shaft shoulder one to one are formed in the stirring pin connecting part and capable of being matched with the screws; the number of the screws is equal to that of the internal thread holes of the shaft shoulder. The split type stirring head is stable in structure and convenient to install.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a split type stirring head. Background technique [0002] Friction welding is a method of using the heat generated by the mutual movement and friction of the workpiece ends to make the ends reach a thermoplastic state, and then quickly upset to complete the welding. Friction welding can easily join the same or dissimilar materials, including metals, some metal matrix composites, ceramics and plastics. The friction welding method has been widely used in engineering because of its high productivity and good quality. The friction stir welding method is the same as the conventional friction welding, which uses friction heat and plastic deformation heat as the welding heat source. The difference is that the welding process of friction stir welding is that the stirring needle is inserted into the joint of the workpiece, and the high-speed rotation of the welding stirring head makes ...

AI Technical Summary

Problems solved by technology

However, the one-piece type in the prior art has the need to replace the entire stirring head after the stirring needle is worn out, which leads to an increase in the cost of the friction stirring equipment used by the enterprise, while most of the split type stirring heads are complicated to install and it is not suitable to realize that the center of gravity of the stirring head is in the stirring position after installation. centerline of the needle

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