Additive hot-pressing inflatable composite forming method for topological structure wallboard

A technology of topological structure and hot press forming, which is applied in the field of precision sheet metal processing, can solve the problems of difficult control of shape precision, poor integrity of parts, high cost, etc., and achieve the effect of easy control of shape precision, improvement of processing efficiency, and improvement of efficiency

Active Publication Date: 2020-10-09
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above analysis, the present invention aims to provide a composite forming method for topological structure wall panels by adding material, hot pressing and inflating, to solve the shortcomings of poor integrity of parts processed in the prior art, difficulty in controlling shape accuracy or high cost

Method used

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  • Additive hot-pressing inflatable composite forming method for topological structure wallboard
  • Additive hot-pressing inflatable composite forming method for topological structure wallboard
  • Additive hot-pressing inflatable composite forming method for topological structure wallboard

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Embodiment 1

[0051] The topological structure wall panel to be formed in this embodiment, such as figure 1 As shown, it includes curved wall panels and stiffeners on the inner surface of the curved wall panels. The stiffeners alternate vertically and horizontally and are evenly distributed. The formed rib lattice is a topological structure (the stiffener part is solid, and there is no topological structure under the stiffener) The curved wall panel includes an inner surface, a topological part and an outer surface. The inner surface is provided with openings (the topological structure part in each rib is provided with an opening), so that the space where the topological part is located can be formed with the upper mold Closed cavity. The outer surface of the curved wall panel is a smooth curved surface. The exterior surface is a tapered surface, the small end arc radius is R400mm, the small end arc length is 464mm, the big end arc radius is R500mm, the big end arc length is 574mm, and the l...

Embodiment 2

[0059] The topological structure wall panel to be formed in this embodiment has the same structure as the first embodiment, and the material of the topological structure wall panel is TA15 titanium alloy.

[0060] The specific forming method includes the following steps:

[0061] Step 1. Perform plane expansion: Determine the topological structure wall panel blank required for hot press forming according to the shape of the topological structure wall panel and the relative position of the reinforcing ribs: the topological structure wall at this time The arc radius of the small end of the slab is R2762mm and the arc length is 464mm; the arc radius of the big end is R3417mm and the arc length is 574mm; the length of the topological structure wall slab (that is, the vertical distance between the small end arc end and the large end arc end) ) Is 656mm. Determine the position of the reinforcing ribs in the unfolded plan view according to the relative position of the reinforcing ribs on...

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Abstract

The invention discloses an additive hot-pressing inflatable composite forming method for a topological structure wallboard, belongs to the technical field of precision sheet metal processing, and solves the defects of poor integrity, difficulty in appearance precision control or higher cost in existing technical processing. The forming method comprises the following steps of step 1, determining positions of reinforcing ribs and a topological structure of a topological structure wallboard blank required by hot-pressing forming; step 2, preparing the topological structure wallboard blank by an additive; step 3, manufacturing a hot-pressing forming die of the topological structure wallboard; step 4, placing the topological structure wallboard blank in a cavity of a hot-pressing forming die, and performing hot-pressing forming on the topological structure wallboard blank; and step 5, forming a closed cavity between the topological structure wallboard blank and an upper die, communicating the closed cavity with an external gas source through a vent hole, and performing ventilation and pressurized correction on the closed cavity in order to enable a curved surface part between the reinforcing ribs of the topological structure wallboard to form a smooth curved surface. According to the method, the surface quality of parts is improved.

Description

Technical field [0001] The invention belongs to the technical field of precision sheet metal processing, and in particular relates to a topological structure wall panel additive hot-compression air-expansion composite forming method. Background technique [0002] Titanium alloys and aluminum alloys are widely used in aerospace, rail transit, weaponry and other fields because of their excellent performance. In the aerospace field, the integration and lightweight of topological structure wall panel products are getting higher and higher, and the requirements for manufacturing precision are getting higher and higher. In the field of sheet metal forming, the commonly used manufacturing methods for topological structure wall panels mainly include cold press forming, casting forming and direct additive forming. Cold forming is not only difficult to meet the requirements for dimensional accuracy, but also difficult to control the surface accuracy. Usually, a large amount of manual corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21D22/02B21D37/16B21D1/00B21D26/021B22F3/00
CPCB21C37/02B21D22/02B21D37/16B21D1/00B21D26/021Y02P10/25
Inventor 秦中环李保永姚为韩维群刘奇刘伟肖瑞徐柄桐张天麟丁科迪
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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