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Sinking forming method and forming die for profile parts with special-shaped cross-section

A technology for special-shaped cross-sections and forming molds, which is applied in the direction of forming tools, manufacturing tools, and metal processing equipment. It can solve problems such as cracks and wrinkles, and achieve the effects of suppressing cracks, shortening the manufacturing cycle, and ensuring shape requirements and surface quality.

Active Publication Date: 2017-12-19
XI'AN AIRCRAFT INTERNATIONAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sag mold and forming method for the sag forming of T-shaped cross-section profiles. Shoulder and other defects, and the manufacturing process is simple, low cost, save a lot of labor, and has high economic value

Method used

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  • Sinking forming method and forming die for profile parts with special-shaped cross-section
  • Sinking forming method and forming die for profile parts with special-shaped cross-section
  • Sinking forming method and forming die for profile parts with special-shaped cross-section

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Embodiment Construction

[0018] Referring to the accompanying drawings, the part 1 provided by the embodiment is formed by sinking a T-section profile, the wing plate 2 of the part is horizontal, and the web 3 of the part is a vertical rib. The part is a typical aluminum-lithium alloy of an aircraft Profile parts.

[0019] For the forming of this part, the forming mold proposed by the application includes an upper mold 6 and a lower mold, the lower surface of the upper mold has a sunken profile matching the upper surface of the profile part wing plate 2, and the lower mold contains the first half mold 7. The second half-mold 8, the mandrel 10 and the movable mold 9, the upper surface of the first half-mold 7 matches the lower surface of the wing plate on one side of the profile part, and the inner side wall of the first half-mold matches one part of the web of the profile part. The side walls match, the upper surface of the second half-mold 8 matches the lower surface of the wing plate on the other si...

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Abstract

The invention discloses a sinking forming die and method for a special-shaped section profile part. The special-shaped section profile part is provided with a horizontal wing plate and a vertical-rib-shaped web. A lower die of the forming die comprises a first half die, a second half die, a core die and a movable die, wherein the core die is fixedly matched with the first half die and the second half die to position a non-sinking part of the profile part, the movable die is matched with the first half die and the second half die to dynamically position a sinking part of the T-shaped section profile part, and the moving stroke of the movable die and the sinking depth of the profile part are the same.

Description

technical field [0001] The invention relates to aircraft manufacturing technology, in particular to the forming of aircraft profile parts, in particular to a sinking forming method and forming die for profile parts with special-shaped cross-sections. Background technique [0002] Profiles are often used to form various large-scale, complex cross-section, asymmetrical, and variable-curvature three-dimensional profile parts. Therefore, they are widely used in manufacturing industries such as aerospace, automobiles, buildings, bridges, elevators, and trains. The flanges on the aircraft, the front and rear sections of the fuselage, and the long trusses of the engine nacelle, etc., these parts constitute the stressed parts of the aircraft skeleton, which directly affect the aerodynamic shape of the aircraft, so the shape accuracy is very high. This type of material parts Most of them cooperate with other sheet metal parts through sag forming, but some special-shaped cross-section...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/10
CPCB21D37/10
Inventor 孟涛吴亢王顺红王伟
Owner XI'AN AIRCRAFT INTERNATIONAL