Stationary shaft shoulder wire filling friction stir welding handpiece system

Abstract

The invention discloses a stationary shaft shoulder wire filling friction stir welding handpiece system. The stationary shaft shoulder wire filling friction stir welding handpiece system comprises a stirring needle installing handle, a main shaft tool holder, a main shaft protecting plate, a stationary shaft shoulder installing base, a stationary shaft shoulder, a stirring needle and an automaticwire feeder and is characterized in that one side of the stationary shaft shoulder installing base is provided with a press roll mechanism and the wire feeder, the press roll mechanism has the vertical freedom degree and is used for achieving elastic rolling on filling wires fed by the wire feeder, and synchronous wire filling is achieved. When welding is conducted, the filling wires are pushed bythe automatic wire feeder, the filling wires are added to the front end of the stirring needle through a wire filling guide groove of the stationary shaft shoulder as the action of a press wheel in the press roll system, and therefore automatic and effective filling of the filling wires is achieved. Meanwhile, the problem that the counteraction force of the filling wires on the press wheel is sometimes large and sometimes small due to working assembly gap changes in the rolling process, and then the exerted effective pressing force in the welding process is influenced is effectively solved, and then the welding technology quality stability is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of static shoulder friction stir welding, and in particular relates to a welding head system for friction stir welding of aluminum alloy product parts with different assembly gap sizes. Background technique [0002] Since Friction stir welding (FSW) was invented in 1991, it has been widely used industrially in the fields of aviation, aerospace, automobile, shipbuilding, and rail transportation. Usually, in order to ensure a good FSW welding effect, the assembly clearance of the workpieces to be welded must be controlled within a certain process allowable range. Closely related (at present, under normal circumstances, the assembly gap needs to be controlled within 10% of the thickness of the plate to be welded, and the maximum does not exceed 1.0mm). However, in actual engineering applications, due to problems such as out-of-tolerance precision and size of parts, insufficient flatness or rigidity of tooling,...

AI Technical Summary

Problems solved by technology

In specific engineering applications, the actual situation is that the gaps of the entire weld to be welded are of different sizes. At this time, it is difficult to arrange the filling material in the gap of the weld to be welded in advance, and especially when the size of the workpiece to be welded is large, When the weld seam to be welded is long, it is more difficult to arrange the filling material in the gap of the weld seam to be welded in different sizes in advance

Therefore, aiming at the problem that the current SSFSW wire filling method has poor adaptability to the gap size of the weld to be welded and cannot realize synchronous wire filling, a static shoulder filling method that is highly adaptable to the weld assembly gap and can realize synchronous automatic wire filling is developed. Wire friction stir welding head becomes a top priority

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