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Method for drawing and forming wide flange panel-shaped parts

A flange face and flange technology, which is applied in the field of drawing forming of wide flange panel parts, can solve the problems of part cracking, failure to form, and influence on material flow, etc., and achieve the effect of sufficient forming and rigidity requirements

Inactive Publication Date: 2012-12-12
烟台泰利汽车模具股份有限公司
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Problems solved by technology

However, under normal circumstances, there are raised bumps on the flange surface, which seriously affect the flow of the material during drawing. When the pressing force is large, the material at the bump is broken, causing the part to crack and cannot be formed. When the pressing force is small, the piled material will wrinkle

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  • Method for drawing and forming wide flange panel-shaped parts
  • Method for drawing and forming wide flange panel-shaped parts
  • Method for drawing and forming wide flange panel-shaped parts

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Embodiment Construction

[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0018] In this embodiment, there are two rectangular convex hulls of 300*120*30 on the flange surface of the wide flange panel-shaped workpiece. When drawing, the upper part of the wide flange panel-shaped part 8 is the upper mold, and the lower part is the lower mold. , the punch insert 5 is fixed on the punch insert holder 4 of the lower template, and the drawing punch 7 is fixed on the drawing punch holder 6. When working, the ejector rod 1 lifts the blank holder 2, and the top With a height of 250mm (effective working stroke 240mm), the drawing die 3 goes down and begins to stretch. When the stretch is 210mm and 30mm away from the end of forming, the punch insert 5 at the bottom starts to work, and the shape of t...

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Abstract

The invention relates to a method for drawing and forming wide flange panel-shaped parts. The method comprises the steps as follows: arranging convex die embedding blocks on the positions on a lower die plate of a drawing die and corresponding to a convex hull on a flange face of the wide flange panel-shaped parts, and keeping the material pressing face of the parts in a smoothness state, so as to ensure the mobility of the material on the material pressing face, and as a result, the parts can be fully formed, and the requirement on rigidity of the parts can be ensured. The method is an effective technical method for drawing and forming plate-shaped parts under a complex parts. By adopting the method, the influence of the convex hull on the flange face to the forming effect during drawing and forming processes of the wide flange panel-shaped parts can be effectively solved; the method is specially suitable for being applied to drawing and forming thin-plate type cold punching parts with thickness less than 2mm under the condition that the convex hull on the flange face is 10 to 40mm in height.

Description

technical field [0001] The invention relates to a method for drawing and forming a wide flange panel-shaped part, which belongs to the field of material forming. Background technique [0002] The stamping forming process of materials is widely used in various fields of industrial production. However, when some parts with wide flanges are stretched and formed, if there are convex bumps on the flange surface, and the process is When the flange surface is required to be used as the binder surface, the convex hull will seriously affect the flow of the material on the binder surface. If the blank holder force is increased, the sheet on the binder surface will crack and cannot be drawn further. If If the blank holder force is reduced, the material on the binder surface will wrinkle, and drawing cannot be achieved. A typical example of wide flange panel drawing is the drawing of automobile front floor. [0003] In recent years, my country's automobile industry is changing with ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20
Inventor 王静南董孝峰朱世峰冯宝成曹洪花
Owner 烟台泰利汽车模具股份有限公司
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