Titanium alloy cylinder circular seam adjustable automatic welding device and welding method

Abstract

The invention provides an adjustable automatic welding device for circular seams of titanium alloy cylinders and a welding method. An outer connecting rod, a left pressing plate, a right pressing plate, an inner connecting rod, an outer connecting rod nut, an inner connecting rod nut and a tail protection pulling cover are included; the inner connecting rod can be inserted into the outer connecting rod, the left pressing plate can be sleeved with the outer connecting rod, the right pressing plate can be sleeved with the inner connecting rod, the outer connecting rod and the inner connecting rod are in clearance fit, and the length between the left pressing plate and the right pressing plate can be adjusted; the inner surface of the left pressing plate and the inner surface of the right pressing plate are circular arc surfaces, and the left pressing plate and the right pressing plate can be closely fitted to the inner surface of a product to be welded; the outer connecting rod nut presses the left pressing plate, and the inner connecting rod nut presses the right pressing plate; and the tail protection pulling cover is connected to a nozzle of a welding gun, and protection is achieved through driving of the welding gun. According to the automatic welding device and the welding method, the outer connecting rod and the inner connecting rod are in clearance fit, the length of the part, inserted into the outer connecting rod, of the inner connecting rod is adjusted, the total length of the device is adjusted, the device is suitable for welding the cylinders with different lengths, the adaptability is wide, the structure is simple, welding of circular seams of the structures of the titanium alloy cylinders is safely and reliably completed, oxidation nearby the circular seamsis avoided, and the welding quality of the circular seams of the titanium alloy cylinders is ensured.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to an adjustable automatic welding device and welding method for the annular seam of a titanium alloy cylinder. Background technique [0002] At present, titanium alloy structures are more and more widely used in the field of aerospace. As a widely used structural form, the titanium alloy cylinder is mainly composed of a front frame, a rear frame and a skin roll, in which the front frame + skin roll, skin roll + rear frame need to be welded in a circular seam. Since titanium alloys are prone to oxidation at high temperatures, and it is difficult to add a drag cover to manual welding, an automatic welding method is required. The currently used titanium alloy girth welding tool has a fixed length, so it can only weld products with a specific length. Once the product length changes, the original tool cannot be used. Contents of the invention [0003] In view of the defects i...

AI Technical Summary

Problems solved by technology

Since titanium alloys are prone to oxidation at high temperatures, and it is difficult to add a drag cover to manual welding, an automatic welding method is required

The currently used titanium alloy girth welding tool has a fixed length, so it can only weld products with a specific length. Once the product length changes, the original tool cannot be used

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