CNC stationary shaft shoulder mounting structure, friction stir welding tool and welding equipment

Abstract

The invention relates to the technical field of friction stir welding, in particular to a CNC stationary shaft shoulder mounting structure, a friction stir welding tool and welding equipment. The stationary shaft shoulder mounting structure comprises a cutter handle, a supporting ring and a shaft sleeve, and the cutter handle is provided with a mounting end suitable for being mounted on CNC equipment and a working end suitable for mounting a stirring needle; and at least one bearing is arranged in the supporting ring, the bearing is arranged at the outer side of the cutter handle in a sleeving manner, and the bearing is in transition fit with the supporting ring. According to the stationary shaft shoulder mounting structure, at the outer side of the rotating cutter handle used by the CNC equipment, the shaft sleeve is directly or indirectly connected to the cutter handle through the bearing in the supporting ring, relative rotation between the cutter handle and the shaft sleeve is achieved, then support is provided for follow-up mounting of a stationary shaft shoulder, friction stir welding of the stationary shaft shoulder can be achieved on the CNC equipment, materials are pressed tightly before welding, the materials are prevented from being shoveled up, meanwhile, the stationary shaft shoulder is beneficial to reducing heat sink and increasing welding upsetting force, then the welding quality is improved, and the equipment purchasing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of friction stir welding, in particular to a CNC static shoulder installation structure, friction stir welding tools and welding equipment. Background technique [0002] As an advanced welding technology, friction stir welding has the characteristics of high welding strength, green and pollution-free. During the welding process, the rotating stirring head plunges into the plate to be welded and moves along the direction of the welding seam to realize welding. At present, the equipment for realizing this welding method includes special friction stir welding machine tools, friction stir welding robots and other welding equipment. However, these devices are expensive and are not suitable for large-scale purchases by small machinery processing plants. [0003] The friction stir welding welding process is similar to the CNC machining process, and the friction stir welding can be realized by simply modifying the...

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Problems solved by technology

However, in this method, the auxiliary shoulder is connected by elastic structures such as springs, which cannot provide a good upsetting force to compress the material. At the same time, the patent proposes that only approximately zero inclination welding can be achieved, and there are also certain welding quality problems in real non-inclination welding.

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