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Drawing method of edge sealing frame type part hydraulically formed based on rubber bladder

A technology of hydroforming and rubber bladder, which is applied in the field of drawing of sealing frame parts based on hydroforming of rubber bladder, can solve the problems of easy wrinkling and twisting, and achieve shortened mold design and manufacturing cycle, high surface quality and convenient operation. Effect

Inactive Publication Date: 2015-04-15
HARBIN
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a drawing method for sealing frame parts based on rubber bladder hydroforming, which can solve the problems of easy wrinkling and twisting after forming of sealing frame parts, reduce manufacturing costs, and improve the quality of parts. Forming quality

Method used

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Embodiment Construction

[0009] The specific implementation manners of the present invention will be further described below.

[0010] The general idea of ​​the present invention is to use the material transfer method to add drawbeads or draw sills to the mold design, so that the bent part can be changed into two-way stretch deformation or the excess material that is prone to wrinkles can be transferred to the draw sill. . When the wool is bent, apply tangential tension to change the stress state in the section of the wool, reduce or basically eliminate the bending springback, thereby improving the forming accuracy of the part.

[0011] Step 1, according to the analysis of the forming process of the part and the forming characteristics of the material, determine the drawing direction and the wrinkled part of the part, so as to determine the number, position and shape of the drawing sill or the drawing bead on the drawing forming die, Design and manufacture drawing dies.

[0012] The focus of drawing...

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Abstract

The invention belongs to the feild of a machinery manufacturing technology and relates to a drawing method of an edge sealing frame type part hydraulically formed based on a rubber bladder. The drawing method comprises the following steps of: step 1, analyzing according to the part forming technology and the material forming features, confirming the drawing direction and the part position easily wrinkled, and further confirming the amount, position and shape of drawing thresholds or drawing ribs on a drawing and shaping die, and designing and manufacturing the drawing and shaping die; step 2, selecting the forming material status, the wool size, the material fiber direction and the forming pressure of the hydraulic forming machine of the rubber bladder, and manufacturing the part. According to the drawing method, the part can be formed by one time, the part cannot be affected due to sizing after being quenched and the drawing and forming effect is ensured, so that the part surface is higher in quality and better in rigidity, and the adhesion quality of the edge sealing frame type part is also improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a drawing method for sealing frame parts based on hydroforming of a rubber bag. Background technique [0002] In order to meet the needs of bonding, aircraft sealing frame parts have high requirements for surface quality and flatness, and the shape and structure of such parts are relatively complex, mostly space curved surface structures. For this type of parts, the material is thin, and the material is retracted and released during the forming process, and the flange edge is prone to wrinkles; the traditional sheet metal process requires manual correction after forming, which inevitably produces hammer marks. These problems directly affect and restrict the forming quality and bonding quality of parts. [0003] At present, in the domestic aircraft manufacturing industry, the application of rubber bladder hydroforming machines still stays in the ordinary mold formi...

Claims

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Application Information

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IPC IPC(8): B21D25/02
Inventor 马德权刘军基王福昌刘丽红杜秀翠赵红卫邵继胜杜淑萍张雪东黑东盛岳景山
Owner HARBIN
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