Stamping forming method and die for aerial sheet metal part with V-shaped flange

Abstract

The invention relates to a stamping forming method and die for an aerial sheet metal part with a V-shaped flange, and belongs to the technical field of material engineering. The die comprises an upper die body, a lower die body and a hydraulic machine. The upper die body is connected with a main cylinder of the hydraulic machine, and the lower die body is connected with an ejector rod of the hydraulic machine. The lower die body comprises a lower die plate, a forming blank holder, a hole flanging male die and locating pins. The hole flanging male die is arranged on the upper middle portion of the lower die plate. The forming blank holder is arranged on the periphery of the hole flanging male die in a sleeving manner. A hydraulic machine ejector rod hole is formed in the lower die plate. The upper die body comprises an upper die plate, a forming female die, a part dismounting device and a sealing gasket. The forming female die matched with the hole flanging male die is connected to the upper die plate. An annular groove is formed in the end, close to the upper die plate, of the forming female die. The part dismounting device is arranged in the annular groove and vertically moved along the annular groove. The sealing gasket is arranged among the upper die plate, the forming female die and the part dismounting device. An annular blank is arranged on the hole flanging male die, the side of the V-shaped flange of the part is formed through the forming blank holder and the forming female die in a stamping manner, and then forming hole flanging of the part is completed through the hole flanging male die. According to the method and die, processes are reduced, and efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to a stamping forming method of an aviation sheet metal part with a V-shaped flange and a mold thereof. Background technique [0002] Aviation sheet metal parts with V-shaped flanges are stamped parts made of high-temperature alloy sheets, which require high-quality forming surfaces, and unevenness such as corrugations is not allowed on the surface of the parts. See figure 1 . At present, the stamping process of aviation sheet metal parts with V-shaped flanges is to first draw and form a cylindrical blank with flanges, see figure 2 , after annealing and softening, another set of molds is used to form a V-shaped flange edge, see image 3 . When forming the V-shaped flange edge, there are many large corrugations on the outer edge of the flange of the part. In order to reduce corrugation, an annealing and softening treatment is performed after the V-shaped...

AI Technical Summary

Problems solved by technology

Although the correction can reduce some corrugations, it cannot be completely eliminated, resulting in unqualified parts surface quality

In addition, the existing manufacturing process still has the problem of many forming steps (3 times) and heat treatment steps (2 times), and the manufacturing cost is high

Images