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Sheet metal plasticity compound bulge forming method

A metal thin plate and bulging technology, applied in metal processing equipment, feeding devices, positioning devices, etc., can solve the problems of difficult parts with large forming angles and long plastic forming processing time, so as to improve surface quality and plastic forming The processing time is too long and the effect of shortening the processing and forming time

Active Publication Date: 2015-12-02
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the requirements of the formed parts, the processing trajectory is programmed in the UG software in advance, and the generated NC code is imported into the CNC machine tool, and then the preformed metal sheet is processed and formed on the sheet metal CNC progressive forming machine tool. A large number of experiments show that, Compared with other composite forming methods, the composite forming method combining spherical bulging and sheet metal numerical control progressive forming can effectively improve the processing time of metal sheet plastic forming and the difficulty of forming parts with large forming angles, especially for large forming angles. Forming corner parts has significant technical advantages over other composite forming methods

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  • Sheet metal plasticity compound bulge forming method
  • Sheet metal plasticity compound bulge forming method
  • Sheet metal plasticity compound bulge forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: 08Al with a thickness of 1.5 mm was selected as the experimental processing material, and the aluminum plate was cut into 20 shaped plates of 200×200 mm on a shearing machine for use in the experiment. Divide the 20 sheets into two groups, and use the sheet metal numerical control incremental forming method and the compound forming method of a kind of metal thin plate spherical bulging and sheet material numerical control incremental forming to process the workpieces of the same shape respectively.

[0029] During the processing, observe whether the formed parts are broken or not, and record the total time required for the processing of the formed parts. By comparing the two plastic forming methods, the total time required for the processing and forming of each group of parts and the size of the forming angle are obtained, indicating that the two Effect of a plastic forming method on the formability of sheet metal.

[0030] Firstly, only the 10 sheets of the ...

Embodiment 2

[0034] Example 2: The second group of 10 sheets was processed by using a compound forming method provided by the present invention which combines spherical bulging of sheet metal and sheet metal numerical control progressive forming. First utilize sheet metal stamping machine to carry out spherical bulging (pre-forming) to metal sheet, the depth of spherical bulging can be calculated according to the model formula in step (2), bulging depth H=2.35cm, then according to spherical shape The depth of the bulging is calculated as the diameter of the spherical bulging D = 10cm, and then the preformed metal sheet is subjected to sheet metal numerical control progressive forming, and the forming results of the 10 formed parts processed by the composite forming method are shown in Table 2 .

[0035] Table 2 Forming results of composite forming method

[0036]

[0037]

[0038] In the second group of experiments, the processing time of 10 shaped parts was about 6 minutes, and the...

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Abstract

The invention discloses a sheet metal plasticity compound bulge forming method, and belongs to the technical field of sheet metal plastic processing forming. The forming method comprises the steps of: first utilizing bulging to preform the sheet metal, calculating the depth of bulging based on the size of a forming angle, and placing the sheet metal which is preformed to a NCincremental sheet metal forming machine tool for processing and forming. The compound forming method is a combination of digitalized sheet metal NC incremental forming technology and traditional spherical bulging forming technology, and achieves special forming effect through advantage complementing. Experimentsshow that, the compound forming method, which is achieved by combining the spherical bulging and sheet metal NC incremental forming, can effectivelysolve the technical problems of overlong processing time of sheet metal plastic forming, and the difficulty of forming parts with large forming angles, especially the difficulty of forming parts with large forming angles.The forming method of the invention has explicit technical advantages over other compound forming methods.

Description

Technical field: [0001] The invention belongs to the technical field of metal plastic processing and forming, and in particular relates to a metal sheet plastic composite bulging forming method. Background technique: [0002] Sheet metal numerical control incremental forming technology is a kind of flexible processing forming technology that has just emerged in the world. It organically combines rapid prototyping technology and plastic forming technology. It involves mechanics, plastic forming technology, numerical control technology, CAD / CAM and other disciplines. Advanced intelligent manufacturing technology. The remarkable advantage of this technology is that as a flexible processing technology, complex curved surface shapes that cannot be formed by conventional forming methods can be formed in local areas without using special molds or only simple molds; Small force, low equipment energy consumption, similar to static pressure, small vibration, low noise, so it belongs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/02B21D28/00B21D43/00
Inventor 钱健清华峰许铭李志庆
Owner ANHUI UNIVERSITY OF TECHNOLOGY