Die for drawing forming of tailor rolled blank box-shaped piece

Abstract

The invention discloses a die suitable for drawing forming of a tailor rolled blank box-shaped piece, and is applied to the technical field of blank drawing dies. The die comprises a drawing die part and a hydraulic control part; a drawing die main body comprises a stepped male die, a female die, blocked blank holders, a die gap adjusting device and the like; and the hydraulic control part mainly comprises a pump, a valve, a measurement and control instrument and the like. According to the die, drawing of the rolling tailor rolled blank box-shaped piece can be achieved, and the high-quality rolling tailor rolled blank box-shaped piece can be obtained by controlling blank holder force applied to the thin side and the thick side of a tailor rolled blank to be reasonably matched. The die is simple in structure, low in production cost, high in stamping efficiency and good in part quality, the male die and the female die are convenient to replace, and the blank pressing gap can be flexibly adjusted.

Description

technical field [0001] The invention relates to the technical field of sheet material deep drawing dies, in particular to a die for deep drawing of a box-shaped rolling plate with a different thickness. Background technique [0002] Tailor Rolled Blank (TRB) is a structural lightweight plate produced by flexible rolling technology, which was developed in the 1990s at the Institute of Metal Forming (IBF) of RWTH Aachen University, Germany. The flexible rolling technology can realize the real-time monitoring, control and adjustment of the roll gap during the rolling process, and then obtain the pre-customized variable cross-sectional shape along the rolling direction. Designers can choose the optimized profile of the sheet metal section according to the actual stress of the part, which greatly increases the design flexibility. [0003] Compared with Tailor Welded Blank (TWB, Tailor Welded Blank), TRB has unique advantages in mechanical properties, weight reduction effect, sur...

AI Technical Summary

Problems solved by technology

After applying TRB to box-shaped parts, the most prominent problems in the deep drawing process are cracking and wrinkling defects, and the unevenness of sheet thickness and mechanical properties will also lead to the movement of the thickness transition zone.

Due to the difference in thickness and performance of TRB thin and thick side sheets, coupled with the influence of transition zone movement, the deformation process of TRB becomes more complicated, and the uneven deformation of the thin and thick sides will make the forming of the entire part more difficult. difficulty

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