Stamping forming method of big-flange high-turnup pipe orifice reinforcing piece

A technology of stamping forming and reinforcing parts, which is applied in the field of forming sheet metal parts and stamping forming parts made of high-temperature alloy materials, which can solve the problem of thinning of flanging thickness, large amount of thinning of flanging holes, and failure to meet the high strength of aircraft structure and other issues to achieve the effect of strong persuasiveness, stable product quality, and easy promotion and realization

Active Publication Date: 2017-02-15
XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main defect of this forming method is that the flanging thickness becomes thinner obviously, and the closer to the flanging hole, the greater the thinning amount, which cannot meet the high-strength requirements of the aircraft structure.

Method used

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  • Stamping forming method of big-flange high-turnup pipe orifice reinforcing piece
  • Stamping forming method of big-flange high-turnup pipe orifice reinforcing piece
  • Stamping forming method of big-flange high-turnup pipe orifice reinforcing piece

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Embodiment Construction

[0032] Referring to the accompanying drawings, the aircraft parts provided by the embodiment are as figure 1 As shown, the part is a large flange, high flange nozzle reinforcement 1, and the main body includes two major parts of the outer edge flange 2 and the side wall flange 3. The cross-section of the stiffener is simply Type, the biggest problem in forming by using the prior art is that the flange 2 is seriously wrinkled or the side wall flanging 3 is thinned out of tolerance.

[0033] Such as Figure 2-6 As shown, a new type of large flange, high flanging nozzle reinforcement stamping forming method, including the following steps:

[0034] Step 1: Determine the stamping die structure

[0035] The forming die that this application proposes is as figure 2 As shown, the mold includes a male mold 4 and a concave mold 5, a vent hole is provided in the center of the bottom of the concave mold cavity 11, and the concave mold 5 is provided with an outer edge line 9 of the r...

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Abstract

The invention provides a stamping forming method of a big-flange high-turnup pipe orifice reinforcing piece. The stamping forming method comprises the steps of determining the structures of stamping forming molds (including a male mold and a female mold); establishing a transitional forming body structure; determining and optimizing a positioning mode of a blank and the male and female molds; and conducting stamping forming. According to the method, by increasing the trimming allowance, the transitional forming body is established, through the novel molds, deformation characteristics of the transitional forming body are controlled on the aspect of working dimensions, the defect that according to pure drawing forming or stamping forming, material flow is not uniform is overcome, forming advantages combining stamping and drawing techniques are achieved, and the stamping forming method has great practical value.

Description

technical field [0001] The invention relates to a forming technology of sheet metal parts in the field of aircraft manufacturing, in particular to a stamping forming method for nozzle reinforcements for large-size flanges and high straight wall flanging, especially suitable for bottom extension and high-strength high-temperature Stamping forming of alloy material plate parts. Background technique [0002] In the field of aircraft plate parts manufacturing, the outer flange flange of the nozzle reinforcement needs to be sealed and connected with the theoretical shape of the aircraft, which requires high precision. Due to the particularity of the structure, the singleness of the parts is determined, and a forming method with reasonable technical and economical efficiency is selected. raletively hard. [0003] At present, domestic technical data stipulates that there are two methods for forming such parts. One is conventional deep drawing forming. At this time, there is no ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/10
CPCB21D22/20B21D22/201B21D37/10
Inventor 曹锋白颖章文亮
Owner XIAN AIRCRAFT BRANCH OF XIAN AIRCRAFT INT
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