Cold and hot combined stamping forming device for aluminum alloy plate and stamping method thereof

An aluminum alloy plate, stamping forming technology, applied in the field of stamping, to achieve high mechanical properties, improve formability, and solve the effect of cracking and springback

Active Publication Date: 2020-08-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing aluminum alloy stamping forming process can not meet this requirement.

Method used

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  • Cold and hot combined stamping forming device for aluminum alloy plate and stamping method thereof
  • Cold and hot combined stamping forming device for aluminum alloy plate and stamping method thereof
  • Cold and hot combined stamping forming device for aluminum alloy plate and stamping method thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0108] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and Embodiment 1. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the present invention.

[0109] like Figure 1-Figure 5 As shown in Example 1, when the cold-heat composite stamping of aluminum alloy sheet is implemented, the stamping blank is a rectangular thin plate with a size of 500×300mm, the material is annealed 2024 aluminum alloy, and the thickness is 1.5mm. After stamping, the bottom surface is corrugated. Surface grooved parts.

[0110] A cold and hot composite aluminum alloy sheet metal cold and hot composite stamping forming device, such as Figure 2-Figure 4 As shown, the device includes a pre-forming mechanism 100 at the No. 1 stamping position, and a...

Embodiment example 2

[0132] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Embodiment 2. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the present invention.

[0133] like Figure 6-Figure 8 As shown in Example 2, when cold and hot composite stamping of aluminum alloy sheet is implemented, the stamping blank is a rectangular thin plate with a size of 500×700mm, and the material is annealed 2024 aluminum alloy with a thickness of 1.5mm. After stamping, the bottom surface is corrugated. Surface grooved parts. in, Figure 7 Yes Image 6 Partial left sectional view of Figure 8 Yes Image 6 Partial right sectional view of . use Figure 6-Figure 8 The device shown can achieve the purpose of producing multiple pieces at the sam...

Embodiment example 3

[0158] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Example 3. It should be understood that the specific implementation cases described here are only used to explain the present invention, and are not intended to limit the present invention.

[0159] like Figure 9-Figure 11 As shown, in Example 3, when cold and hot composite stamping of aluminum alloy sheets is implemented, the width of the blank coil 303 is 300 mm. Solvent treatment. The material used is 7075 aluminum alloy in T6 state, with a thickness of 1.5mm. After punching, it is a groove-shaped part with a wave-shaped bottom surface.

[0160] A cold and hot composite aluminum alloy sheet metal cold and hot composite stamping forming device, such as Figure 9-Figure 11 As shown, the device includes a pre-forming mechanism 100 at the No. 1 stamping positi...

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Abstract

The invention discloses a cold and hot combined stamping forming device for an aluminum alloy plate. The device comprises a pre-forming mechanism and a finish-forming mechanism, wherein the pre-forming mechanism comprises a first stamping convex die, a first stamping concave die, a first blank holder and a cooling mechanism; an elastic heat-insulating support is arranged on the first stamping concave die; and the finish-forming mechanism comprises a second stamping convex die, a second stamping concave die, a second blank holder and a cooling mechanism. Meanwhile, a corresponding stamping method is further provided. Through the stamping forming device and the stamping method, aluminum alloy forming performance is improved, the problems of forming fracturing, rebounding and the like under room temperature are solved, and the stamping forming percent of pass of the aluminum alloy plate is increased; moreover, aging strengthening and deformation strengthening can be introduced simultaneously in the stamping forming process, so that the effect of strengthening deformation and aging is achieved, then cold deformation of different allowances are designed on different parts or different portions of the same part to be combined with subsequent artificial aging, and consequently the overall strength of the parts or the strength of the different portions of the parts is changed; and besides, forming precision can be improved.

Description

technical field [0001] The invention belongs to the technical field of stamping, and in particular relates to a cold-heat composite stamping forming device for an aluminum alloy plate and a stamping method thereof. Background technique [0002] Whether it is a traditional fuel vehicle or a new energy vehicle, lightweight technology is a universally recognized basic technology for energy conservation and emission reduction of vehicles. Automobile lightweight is to reduce the curb weight of the car as much as possible under the premise of ensuring the strength and safety performance of the car, which can not only increase the driving speed, increase the cruising range, shorten the braking distance, improve the handling performance, but also be more energy-saving and environmentally friendly. Aluminum alloy lightweight technology is the most potential development direction of international automobile lightweight. [0003] For the stamping forming of heat-treatable and deformab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/02B21D37/16C22F1/04
CPCB21D22/02B21D22/022B21D37/16C22F1/002C22F1/04
Inventor 华林胡志力万心勇
Owner WUHAN UNIV OF TECH
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