Large-thickness-difference plate part stamping and forging die structure and forming process

Abstract

The invention discloses a large-thickness-difference plate part stamping and forging die structure and a forming process. The large-thickness-difference plate part stamping and forging die comprises a core die, a primary die, a female die and a floating die. A floating die cavity communicated with a blank cavity is formed in the female die or the core die, and the size of the floating die cavity is matched with the boundary dimension of the floating die, so that the floating die can move up and down in the floating die cavity; the floating die cavity penetrates through the center of the female die or the center of the core die, so that the speed or pressure needed by the floating die can be controlled by external forming equipment, the floating die and the primary die move cooperatively, and the core die is used for acting together to restrain buckling deformation of a plate in the material gathering process. According to the stamping and forging forming process, the stamping and forging die is adopted for gathering materials at the bottom of a bowl-shaped blank, and forming of a large-size boss on a plate piece is achieved. The material utilization rate can be increased to adapt to production economy, deformation instability is controlled to improve process stability, and forming equipment and the die structure are simplified to improve process feasibility.

Description

technical field [0001] The invention relates to the technical field of stamping and forging forming of plate parts with large thickness differences. Background technique [0002] With the rapid development of automobile lightweight technology, more and more thick plate parts on the vehicle are thinned at the center or at the edge to reduce the quality of the parts. When such parts are formed by machining from bar stock, the greater the thickness difference of the parts, the greater the processing volume, which not only reduces the utilization rate of materials, but also prolongs the processing time and reduces the production economy. [0003] In view of the problems in the processing of plate parts with large thickness difference, in actual production, the plate parts with large thickness difference are usually designed as two independent parts, which are combined by welding or mechanical connection. Although this method effectively improves the utilization rate of material...

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies of the above-mentioned technologies, the present invention provides a stamping and forging die for plate parts with large thickness difference, which solves the technical problem that buckling deformation easily occurs during the process of forming thick-walled bosses on the bottom of thin-walled plate blanks

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