Part and through-hole one-stage forming method in resin base composite material hot-pressed formation

A composite material and hot-press forming technology, which is applied in the field of through-hole forming to achieve the effect of improving production efficiency

Inactive Publication Date: 2008-01-09
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defect that the existing technology is to punch holes after the parts are made, the purpose of the present invention is to provide a method for one-time forming of parts and through-holes in resin-based composite material thermoforming. , The configuration of the template makes the through hole of the part formed at the same time as it is made

Method used

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  • Part and through-hole one-stage forming method in resin base composite material hot-pressed formation
  • Part and through-hole one-stage forming method in resin base composite material hot-pressed formation
  • Part and through-hole one-stage forming method in resin base composite material hot-pressed formation

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Experimental program
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Effect test

Embodiment 1

[0056] Prepare the workpiece 1 and the configuration of the A through hole 11 on the workpiece as shown in FIG. 1 .

[0057] The product 1 is a plate structure with a plurality of A through holes 11, the thickness h is 2 mm, the diameter d of the A through holes 11 is 16 mm, and the number of A through holes 11 is 21.

[0058] The first step: according to the shape of the part 1 and the number n of through holes 11 on the part A, the layout m, and the diameter d, design the outer dimensions of the upper and lower molds, the first, second and third templates, and the cone column;

[0059] Wherein, the thickness of the upper mold 71 is 13.5mm, and the diameter of the blind hole is 16mm; the thickness h of the first template 2 1 2mm, B through hole 21 diameter d 1 is 15.5mm; the thickness h of the second template 3 2 3mm, c through hole 31 diameter d 2 is 21mm; the thickness h of the third template 4 3 5mm, D through hole 41 diameter d 3 is 16.5mm; the thickness of the lower...

Embodiment 2

[0069] As shown in Figure 5, the workpiece is a trapezoidal structure with multiple through holes, with a thickness of 3 mm. There are 91 through holes in the middle and side surfaces, with a diameter of 20 mm. There are 7 connecting holes on each side, with a diameter of 8 mm. .

[0070] Step 1: According to the shape of the part and the number, layout and diameter of the through holes on the part, design the outer dimensions of the upper and lower molds, the first, second and third templates, and the cone column;

[0071] Wherein, the diameter of the through hole in the middle surface and the side of the upper mold 71 is 20mm, and the diameter of the through hole on both sides is 8mm; the thickness h of the first template 2 1 3mm, the diameter of the through hole in the middle surface and side surface d 1 18.5mm, the diameter of the through hole on both sides is 6.5mm; the thickness of the second template 3 is 3mm, the diameter of the through hole in the middle surface and ...

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Abstract

The present invention discloses one-step hot pressing process of forming composite resin material product with through hole. The process includes forming one preformed body with pre-dipped material in the pressure forming device; setting one pillar with conic tip inside the through hole of the lower mold, and mounting the upper mold on the upper heating board of the press and the lower mold on the lower heating board; setting the preformed body on the pillar with conic tip and hot pressing to form. The present invention is superior to the conventional technological process with first forming and subsequent machining through hole.

Description

technical field [0001] The present invention relates to a method for forming through-holes, more particularly, it refers to a method for forming multiple through-holes on a fiber-reinforced resin-based composite material at the same time as it is thermocompressed, that is, The through hole on the part is also formed when the part is formed, which saves the process of reprocessing the through hole under the conventional process. Background technique [0002] Fiber-reinforced resin-based composites have the advantages of light weight, high specific strength, high specific stiffness, corrosion resistance, anti-aging, and long service life, and are widely used in aerospace, transportation, and energy fields. At present, fiber-reinforced resin-based composite parts with through holes often cannot be molded at one time, and the through holes need to be formed by machining (drilling, punching) after the part is cured. Such a molding method brings the following problems: (1) the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/42B29C43/58B29C33/38B29K105/06B29K67/00B29K23/00B29K63/00B29K61/04B29K33/18B29K25/00B29K309/08B29K307/04B29K309/00
Inventor 张佐光郝继军孙志杰李敏
Owner BEIHANG UNIV
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