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A Rubber Forming Method for Thin-walled Reinforced Panel Parts with Multiple Surrounding Deep Rib Structures

A panel and component technology, applied in the field of aircraft manufacturing, can solve the problems of difficult control of forming quality and material deformation, instability and cracking of falling pressure forming, and low forming precision, so as to solve the problem of forming cracking, improve forming accuracy, and reduce manufacturing costs. low effect

Active Publication Date: 2021-08-03
XIAN AIRCRAFT IND GROUP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of unstable cracking, small forming limit, low forming precision, difficult control of forming quality and material deformation of thin-walled reinforced panel series parts, and improve product production efficiency, the purpose of the present invention is to provide a multi-surrounding deep rib structure Rubber Forming Method for Thin Wall Reinforced Panel Parts

Method used

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  • A Rubber Forming Method for Thin-walled Reinforced Panel Parts with Multiple Surrounding Deep Rib Structures
  • A Rubber Forming Method for Thin-walled Reinforced Panel Parts with Multiple Surrounding Deep Rib Structures
  • A Rubber Forming Method for Thin-walled Reinforced Panel Parts with Multiple Surrounding Deep Rib Structures

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Embodiment Construction

[0040] Referring to the accompanying drawings, the aircraft sheet metal parts provided by the embodiment are as figure 1 As shown, the reinforced panel part 1 is provided with a plurality of surrounding reinforcing ribs 2, and each annular reinforcing rib 2 is provided with a lightening hole 3 corresponding to the outer shape. The aluminum alloy reinforced panel part 1 has a thin wall, and the reinforcing ribs 2 are densely arranged and deep. The disadvantages of traditional drop forming are long processing cycle, large amount of manual correction, serious instability, wrinkling, thinning and cracking, and cracks sometimes occur on the assembly site. The forming quality restricts the normal development of subsequent bonding work.

[0041] Such as Figure 2 to Figure 11 As shown, a rubber forming method for thin-walled reinforced panel parts with multiple surrounding deep rib structures includes the following steps:

[0042] Step 1 makes the rubber forming mold of the reinfor...

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Abstract

The invention discloses a rubber forming method for a thin-wall reinforced panel part with a multi-encircling deep rib structure, which comprises the following steps: making a rubber forming mold for the reinforced panel part; making an unfolded blank; the first rubber hydroforming; the second rubber hydroforming; Hydraulic correction; trimming and cutting the shape. The molding die in the present invention adopts a supporting platen structure, which promotes beneficial replenishment of surrounding materials inwards, so that the original unidirectional stretching deformation of the peripheral ring material is optimized into a bidirectional compression deformation method, which solves the problem of forming and cracking of the deep rib reinforced panel. The installation and operation methods of the forming mold are simple and convenient, and the material of the support plate is not limited, and light materials such as machinable plastics are preferred, which are easy to process, low in manufacturing cost, and easy to promote and realize.

Description

technical field [0001] The invention relates to sheet metal parts forming technology in the field of aircraft manufacturing, in particular to a rubber forming method and forming method for thin-walled sheet metal parts with various shapes, unequal spacing, internal openings, multiple surrounds, and deep cavities. mold. Background technique [0002] A honeycomb sandwich glued structure is widely distributed on the aircraft body to realize the application function of the wing surface with lighter weight, greater strength and less deformation. The surface of the honeycomb sandwich core is covered with a layer of board-made reinforcement panel parts, which are glued between the inner and outer skins of the aircraft to consolidate and strengthen the board-made shell of the whole aircraft. In order to adapt to the changes in the curvature of the wing shape and solve the material defects of the weak rigidity of the plate reinforcements, the parts are designed with a number of rib ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/02B21D37/10B21D53/92
CPCB21D26/02B21D37/10B21D53/92
Inventor 白颖史靠军张鑫李世峰程晓芳王伟
Owner XIAN AIRCRAFT IND GROUP
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