Tailor-welded blank hydraulic partitioning and side pressing forming device and forming method thereof

Abstract

The invention provides a tailor-welded blank hydraulic partitioning and side pressing forming device and a forming method thereof. The device comprises an upper die seat, a male die, a side pressing mechanism, a hydraulic cylinder cavity and a lower die seat. The male die is fixed to the upper die seat, and the hydraulic cylinder cavity is fixedly formed in the lower die seat. The side pressing mechanism comprises an upper side pressing ring, an upper side pressing ring fixing column and four sets of side pressing assemblies with the same structures. Each side pressing assembly comprises a partitioning and side pressing ring, a guide column and a piston. Before forming, hydraulic oil enters the hydraulic cylinder cavity to drive the side pressing assemblies to be ejected, and a tailor-welded blank is clamped by the four side pressing assemblies; during forming, the upper die seat and the male die move downwards, a control system controls side pressing force in real time by adjusting the change of oil pressure in hydraulic cylinders, and smooth forming of the tailor-welded blank is guaranteed; and after forming is completed, the upper die seat and the male die move upwards, the sidepressing mechanism moves downwards, the upper die seat, the male die and the side pressing mechanism return to respective initial positions, the integration level of the mechanical structure of the forming device is high, and the forming device is suitable for a partitioning and side pressing experiment of the tailor-welded blank and beneficial for forming of the tailor-welded blank.

Description

technical field [0001] The invention belongs to the field of experimental devices, and in particular relates to a hydraulic segmented edge forming device for tailor welded blanks and a forming method thereof. Background technique [0002] In the modern automobile industry, tailor-welded blanks have many advantages in lightening the weight of automobiles and reducing the types and quantities of molds. Therefore, it has received more and more attention. Now many automobile manufacturers have used tailor-welded blanks in automobile production. The latest research results show that more than 50% of the latest steel body structures are made of tailor-welded blanks. [0003] However, although Tailored Welded Blanks have many advantages, there are also many technical difficulties that are difficult to solve, and the current research on Tailored Welded Blanks still cannot meet people's needs in Tailored Welded Blanks forming technology. In the forming process of tailor welded blank...

AI Technical Summary

Problems solved by technology

Specifically, the hydraulic segmented blank holder forming device for tailor welded blanks provided by the present invention divides the blank holder into four pieces in the axial direction, and realizes independent and real-time online control for each segmented blank holder, so that Solve the problem of how to better implement effective blank-holding control over the entire deformation zone when the thickness of the sheet metal in the deformation zone is unevenly distributed along the circumferential direction

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