Forming method and forming mold of semi-closed sheet part

A forming mold and semi-closed technology, applied in the field of sheet metal forming, can solve the problems of corrugation, angle value out-of-tolerance, unevenness and other problems on the surface of parts, and achieve the effect of optimizing forming tooling, reducing correction procedures and avoiding interference

Inactive Publication Date: 2016-10-12
XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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  • Application Information

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Problems solved by technology

As a result, the size of the flange of the part does not match the drawing (including continuous flange), the size of the beveled edge of the part does not match the size of the drawing, there are ripples and unevenness on the upper surface of the part, the angle values ​​of the 4 inner corners of the part are greatly out of tolerance, and the inner sides of the four corners are bent Radius R does not match the drawings and other issues

Method used

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  • Forming method and forming mold of semi-closed sheet part
  • Forming method and forming mold of semi-closed sheet part
  • Forming method and forming mold of semi-closed sheet part

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Embodiment Construction

[0019] See attached picture, figure 1 It is a schematic diagram of a semi-closed thin plate part. According to the structural design of the aircraft, the material grade of the part is LY12CZ state, the thickness of the plate is 1mm, and the height of the whole part is 20mm (such as figure 1 with figure 2 shown). The semi-closed structure formed by the flanges of part 1 is a blind spot for correction, and the size cannot be controlled. The surface quality of the parts after manual forming is poor, and the parts cannot be removed smoothly after forming. Therefore, the forming of the part and the unloading after forming are the problems that the present invention strives to solve.

[0020] First, there must be a forming mold, which contains a base 6 and an inner tire. The base is provided with a concave cavity that matches the shape of the bottom of the part 1. The two ends of the cavity are provided with the first part for forming the part. A positioning hole 11, the inner...

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Abstract

A forming method and forming mold for a semi-closed thin plate part, the forming mold includes a base and an inner tire, the base is provided with a concave cavity matching the shape of the bottom of the part, and the inner tire contains a left inner tire , the right inner tire and the support core, place the bent part on the cavity of the forming mold base, and then fill the left inner tire, right inner tire and support core in the bent part in turn Cavity, use positioning pins to fix and position the forming parts, and finally disassemble the forming mold, remove the process lugs, and correct the external dimensions of the parts.

Description

technical field [0001] The invention relates to the technical field of sheet metal forming, and is mainly aimed at a forming method and a forming die for semi-closed thin plate parts such as pedals at the boarding part of the front cabin door of an aircraft. Background technique [0002] Among aircraft parts, there is a kind of semi-closed thin plate parts that are exposed parts, such as the panel on the side of the boarding door of the front door of the aircraft, and the appearance is required to be beautiful and generous. The surface is not sprayed with protective paint, and no obvious processing traces are required. And the number of stand-alone is large. At the same time, the height of the part is low and the interior needs to be glued to the hat-shaped support, which requires high precision. In aircraft boarding door components, this kind of thin plate parts with semi-closed and asymmetric structure with low cavity is very typical. [0003] This kind of part has a cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/031B21D26/021
CPCB21D26/031B21D26/021
Inventor 王永兴章文亮田晓军
Owner XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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