Integrated friction plug welding spindle head device

Abstract

The invention discloses an integrated friction plug welding spindle head device. The integrated friction plug welding spindle head device comprises a rotating shaft and an oil cylinder; the oil cylinder comprises an outer shell, a rear large cover and an inner shell; a first oil port and a second oil port are correspondingly formed in the outer shell and the rear large cover; the inner shell is arranged in the outer shell, and moves in the axial direction of the outer shell under the oil intake and discharge action of the first oil port and the second oil port, and control over the axial loadof welding is realized by adjusting pressure difference between the first oil port and the second oil port; the rear end of the inner shell is connected with a rear cover located in the rear large cover; the rear cover and the rear large cover are correspondingly provided with a guide rail sliding block and an axial stroke limiting slot which cooperate with each other; the rotating shaft is arranged in the inner shell, and is in coordination with the inner shell through a bearing pack; and the front end of the rotating shaft is connected with a plug rod, and the rear end of the rotating shaftis connected with a hydraulic motor. The integrated friction plug welding spindle head device disclosed by the invention has the characteristics of being high in integration degree, small in size, light in weight, convenient to disassemble, and the like, and can be installed on a mechanical arm to complete onsite repairing on the defect of a structure, repair welding on a keyhole during friction stir welding, and the like.

Description

technical field

[0001] The invention relates to welding manufacturing technology, in particular to a friction plug welding spindle head device mainly used for in-situ repair of welding defects of aluminum alloy structures and friction stir welding keyhole repair. Background technique

[0002] Friction plug repair welding is a solid-phase joining technology, which has the advantages of low welding temperature, small residual stress and deformation, and has broad application prospects, especially in aerospace, automobile, marine engineering and other fields. The basic process of friction plug welding can be described as: the stopper rod (consumable material) is driven by the driving device, and is fed axially while rotating at a high speed, and the stopper rod is subjected to a certain axial load during this process. After the contact between the stopper rod and the plug hole, a large amount of welding heat input is generated due to friction, and the workpiece to be welded bec...

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