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Forming device and method through uneven stretching and in-plane bending of aluminum alloy plate

An aluminum alloy plate, bending forming technology, applied in the direction of metal rolling, etc., can solve the problems of outer edge wrinkling, poor fluidity, space distortion and inner edge wrinkling, etc.

Inactive Publication Date: 2015-02-25
通达科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the poor fluidity of the material in the deformation zone of the sheet metal in the in-plane bending forming process using the uneven compression method in the prior art, the strip is prone to outer edge wrinkling, space distortion and inner edge wrinkling, which affects the stability of the forming process and Insufficient forming precision of the parts, the present invention proposes an in-plane bending forming device and forming method for uneven stretching of aluminum alloy sheets

Method used

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  • Forming device and method through uneven stretching and in-plane bending of aluminum alloy plate
  • Forming device and method through uneven stretching and in-plane bending of aluminum alloy plate
  • Forming device and method through uneven stretching and in-plane bending of aluminum alloy plate

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Experimental program
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Effect test

Embodiment 1

[0038] This embodiment is a device for in-plane bending forming of an aluminum alloy sheet with a length of 400 mm, a width of 20 mm, and a thickness of 2 mm, including a base 1 of the forming device, a pump frame 2, a rotating arm 3, a rotating shaft 4, and a first clamping block 5. Moving block 6, second clamping block 7, hydraulic cylinder 9 and hydraulic pump 10.

[0039] The hydraulic pump 10 is installed on the upper surface of the base 1, and the output shaft of the hydraulic pump 10 is fitted with a hydraulic cylinder 9. The other end of the hydraulic cylinder 9 is located in the square through hole of the rotating arm 3, and is rotated The arm pin 8 is fixed. The bottom end of the hydraulic pump 10 is fixed on the base 1 through the pump frame 2 . The rotating shaft 4 is fixed on the upper surface of the base 1 . The rotating arm 3 is installed on the rotating shaft 4, and the lower surface of the rotating arm 3 and the positioning surface of the rotating shaft are ...

Embodiment 2

[0049] This embodiment uses the in-plane bending forming device for the aluminum alloy sheet described in Embodiment 1 to bend the aluminum alloy sheet.

[0050] The aluminum alloy sheet has a length of 400mm, a width of 20mm, and a thickness of 2mm, and the bending angle is 60°. From the perspective of forming effect, the angle of each bending should not be too large. The maximum angle of one bending of the in-plane bending forming device of the aluminum alloy sheet described in this embodiment is 30°, so two bending formings are required. The specific process is:

[0051] In the first step, the aluminum alloy sheet to be formed is clamped on the first clamping block 5 and the second clamping block 7 and fastened.

[0052] The second step is to start the hydraulic pump for the first bending and stretching. Under the thrust of the hydraulic pump, the rotating arm is rotated to stretch the sheet. The rotation angle of the rotation arm is set according to the bending angle θ o...

Embodiment 3

[0062] This embodiment uses the in-plane bending forming device for the aluminum alloy sheet described in Embodiment 1 to bend the aluminum alloy sheet.

[0063] The aluminum alloy sheet has a length of 400mm, a width of 20mm, and a thickness of 2mm, and the bending angle is 50°. From the perspective of forming effect, the angle of each bending should not be too large. The maximum angle of one bending of the in-plane bending forming device for the aluminum alloy sheet described in this embodiment is 30°, so it is necessary to divide the bending into two times, wherein the first The first bending angle is 30°, and the second bending angle is 20°. The specific process is:

[0064] In the first step, the aluminum alloy sheet to be formed is clamped on the first clamping block 5 and the second clamping block 7 and fastened.

[0065] The second step is to start the hydraulic pump for the first bending and stretching. Under the thrust of the hydraulic pump, the rotating arm is ro...

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Abstract

The invention discloses a forming device and method through uneven stretching and in-plane bending of an aluminum alloy plate. The forming method comprises the following steps: fixing the aluminum alloy plate through a clamping part; realizing the partial uneven stretching of the aluminum alloy plate in the length direction through the rotation of a mechanical device; accumulating and coordinating partial deformation to enable the aluminum alloy plate to deform in an in-plane bending manner so as to form a circular ring. The device and the method have the advantages that the rotation radius of the upper edge of the aluminum alloy plate is larger than that of the lower edge of the aluminum alloy plate through the rotation of the mechanical device; during the process of rotation, the increment of the arc length of the upper edge is larger than that of the arc length of the lower edge of the aluminum alloy plate, so that the upper edge and the lower edge of the aluminum alloy plate are lengthened unevenly; according to the principle of incremental forming, the partial deformation is accumulated and coordinated so as to enable the aluminum alloy plate to deform in an in-plane plastic bending manner; then the aluminum alloy plate develops in the direction of forming the circular ring; meanwhile, due to an intermittent loading procedure, parts with different radians and complex shapes can also be formed.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to an in-plane bending forming device and forming method of an aluminum alloy sheet material with uneven stretching. Background technique [0002] When the metal sheet is deformed by monotonous and uneven stretching, it can be bent and formed in the plane to form a ring-shaped part. This forming method is different from the traditional plastic bending loading path and stress state. It takes advantage of the non-uniformity of plastic deformation and has attractive application prospects. In the past, ring parts such as snap rings and metal pads were mostly punched out of plates. , There are many waste materials, and the in-plane bending forming method has the characteristics of saving material, high degree of flexibility, low energy consumption and high efficiency. It is a precision forming technology that can fully utilize the potential of material forming. In foreign countries,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21H1/06
Inventor 孙宝龙王永军杨润强
Owner 通达科技(东莞)有限公司
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