The invention relates to the technical field of
welding, and discloses a complex sheet
metal frame cabinet tailor-
welding method which comprises the following steps: S1, splitting: assembling an upper frame, a lower frame and a middle stand column according to a design structure of a frame cabinet; s2, bending is conducted, specifically, corners of the upper frame, the lower frame and the middle stand column are bent; s3, splicing is conducted, specifically, the upper frame, the lower frame and the middle stand columns are spliced into a frame, and the middle stand columns are clamped in the bent positions; and S4,
welding is conducted, specifically, the spliced exposed parts of the upper frame, the lower frame and the middle stand column are welded. Through the four-step process of modular splitting, precise bending, mechanical
interlocking and flat welding optimization, an innovative frame of mechanical positioning and then welding fixing is constructed,
welding deformation is controlled from the source, the
assembly consistency is improved, mechanical structure design and the
welding process are deeply coupled, and the welding efficiency is improved. And a dual anti-
deformation mechanism of physical
interlocking constraint and welding heat
input control is formed.