Milling and welding integrated device for upper and lower circular seams in bottom of storage box

Abstract

The invention relates to a milling and welding integrated device for upper and lower circular seams in the bottom of a storage box. The device consists of a tool main body, an air cylinder inner supporting mechanism, an air bag inner supporting mechanism, a fork type ring lifting mechanism, a milling inner holder supporting mechanism, a welding back lining supporting mechanism and a circular seam outer pressing mechanism. The device disclosed by the invention has the advantages of guaranteeing accordant standards of milling, assembling and welding tools, preventing repeated assembly and location and effectively guaranteeing the product quality; by integrating milling, assembly and welding, the device has the advantages of reducing the steps of lifting, regulating, aligning, pressing and the like for replacing a work station, effectively shortening the production period, greatly improving the efficiency, also reducing the amount of tools and lowering the production cost. The air bag inner supporting mechanism has a telescopic function and can be used for preventing a trouble that a work piece is difficultly separated from a mold due to shrinkage after being welded.

Description

technical field [0001] The invention belongs to the field of metal welding, and in particular relates to an integrated device for milling and welding the upper and lower ring seams of the tank bottom. Background technique [0002] The storage tank is a thin-walled pressure vessel, and the bottom of the storage tank is an ellipsoid, such as figure 1 As shown, each box bottom is made up of top cover 2, circular ring 1 and fork ring 3. The combination of the top cover and the circular ring forms the upper circular seam of the bottom of the box, and the combination of the fork ring and the circular ring forms the lower circular seam of the bottom of the box. Both girth weld areas are surfaces. In order to ensure the fit of the contact surfaces, the upper end face of the fork ring and the upper and lower end faces of the ring should be milled before welding. [0003] In order to prevent welding deformation and ensure welding quality, the current common practice is to use milli...

AI Technical Summary

Problems solved by technology

Multiple sets of tooling are used for milling and welding, the equipment investment is large, the process is cumbersome, and there are repeated workpiece positioning errors, resulting in low production efficiency and high production costs.

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