A Rubber Forming Method for Concave Curved Surface and Semi-arc-shaped Reinforced Bend Sheet Metal Parts

A technology of sheet metal parts and semi-circular arcs, applied in the field of aircraft manufacturing, can solve the problems such as the large curvature limitation of partition parts, and achieve the effects of improving the forming accuracy, and the installation and operation methods are simple, convenient and easy to achieve.

Active Publication Date: 2020-06-30
XIAN AIRCRAFT IND GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the large curvature of the diaphragm part and the semi-arc-shaped flange structure of the concave surface limit its direct rubber forming.

Method used

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  • A Rubber Forming Method for Concave Curved Surface and Semi-arc-shaped Reinforced Bend Sheet Metal Parts
  • A Rubber Forming Method for Concave Curved Surface and Semi-arc-shaped Reinforced Bend Sheet Metal Parts
  • A Rubber Forming Method for Concave Curved Surface and Semi-arc-shaped Reinforced Bend Sheet Metal Parts

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Embodiment Construction

[0024] Referring to the accompanying drawings, the aircraft parts provided by the embodiment are as figure 1 As shown, the part 1 is a sheet metal part with curved edges on both the inner and outer sides. The inner side has a large curvature, concave shape, and the bent side is in the shape of a semicircle. The biggest problem in forming the part with the existing technology is that the inner concave surface 2 is semicircle. The curved edge is prone to thinning and cracking, and it completely depends on the skill level of the workers, and the surface quality of the parts is poor.

[0025] The molding die that this application proposes is as figure 2 As shown, the forming mold includes a forming die 3, a cover plate 4, an auxiliary pad 5 and a base plate 6, the base plate 6 is a cuboid frame, and the shape of the working surface of the forming die 3 is consistent with the shape of the inner concave surface 2 of the sheet metal part 1 to be formed. The cross-section of the sur...

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Abstract

The invention discloses a rubber pad forming method of a concave surface semi-arc reinforced flange sheet metal part. A mold is included, the mold comprises a bottom plate, a mold body, a cover plateand an auxiliary cushioning block, the shape of the working face of the mold body is in accord with the concave surface shape of a to-be-molded metal sheet part, the shapes of the auxiliary cushioningblock and the working face of the mold body are matched, the height of the shape of the auxiliary cushioning block is lower than the mold body, the mold body and the auxiliary cushioning block are connected with the bottom plate, wools are fixed to the bottom plate, the cover plate is pressed downwards by using hydraulic molding equipment, suspended sheet materials are pressed by rubber pads to adhere to the working surface of the mold and the upper surface of the auxiliary cushioning block to form a transition work piece with an L-shaped inner flange, the transition work piece is placed on another flanging mold, and therefore the outer side flange of the transition work piece is molded.

Description

technical field [0001] The invention relates to a sheet metal part forming technology in the field of aircraft manufacturing, in particular to a rubber forming method for a concave curved surface semicircular arc-shaped reinforced bending edge sheet metal part. Background technique [0002] With the continuous advancement of aerospace technology, higher requirements are put forward for aviation parts. The complexity and precision of aviation sheet metal parts have become the development trend of modern aircraft performance and quality improvement. [0003] The leading edge components of the newly developed aircraft are distributed with a series of bulkhead parts. Restricted by the installation environment, the inside of this series of parts is designed with a large curvature concave flange, taking into account the design strength requirements, and the cross-sectional shape of the flange is a semi-arc reinforced structure. [0004] Usually, the contour length of the blank of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D19/08B21D22/10B21D37/10
CPCB21D19/08B21D22/10B21D37/10
Inventor 白颖李善良邹峰王汝娇李世峰常蓓
Owner XIAN AIRCRAFT IND GROUP
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