CN209080154U - A kind of helicopter blade structure based on 3D metallic print - Google Patents
A kind of helicopter blade structure based on 3D metallic print Download PDFInfo
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- CN209080154U CN209080154U CN201821645409.9U CN201821645409U CN209080154U CN 209080154 U CN209080154 U CN 209080154U CN 201821645409 U CN201821645409 U CN 201821645409U CN 209080154 U CN209080154 U CN 209080154U
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- lattice
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- metallic print
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Abstract
The utility model discloses a kind of helicopter blade structures based on 3D metallic print, comprising: covering including rectangle blade outer layer and is filled in and covers intracutaneous lattice structure skeleton；The rectangle blade is divided into several identical sections, lattice structure skeleton includes several lattice-sites being distributed on section Curve of wing and in curve and is connected to the lattice framework for forming several triangular crystal lattices between lattice-site, and connected between corresponding lattice-site by lattice framework on two neighboring section, constitute several triangular prism lattice structures.The utility model inserts lattice structure inside blade, with covering collective effect, can bear the load such as stretch bending torsion well, keep blade design more simple and effective, blade more lightweight realizes that big batch metaplasia produces, effectively pushes the integrated design and processing of 3D metallic print helicopter blade.
Description
Technical field
The present invention relates to a kind of helicopter blade structures based on 3D metallic print, belong to 3D printing paddle blade structure technology neck
Domain.
Background technique
Important component one of of the blade as helicopter rotor system is constituted from wooden structures or steel wood mixed structure
Start, slowly develops into metal crossbeam cementing structure, existing frequently-used is composite structure.Composite material blade structure is multiple
Miscellaneous, general using molding manufacture, process is cumbersome, costly.3D printing technique breaches the constraint of traditional blade design, gives
The better design space of lifting airscrew designer, produces blade more with practical value.Needing to develop one kind can
Rapid shaping, relative moderate Novel paddle structure.The patent is by Jiangsu Province's postgraduate's scientific research and practice innovation plan item
Mesh (SJCX18_0095) patronage.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of based on 3D metallic print
Lattice is inserted inside blade, with covering collective effect, keeps blade design more simple and effective by helicopter blade structure, realizes work
Industry mass production promotes the integrated design and processing of 3D metallic print helicopter blade.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of helicopter blade structure based on 3D metallic print, covering including rectangle blade outer layer and is filled in covering
Interior lattice structure skeleton；
Wherein, the rectangle blade is divided into several identical sections, and covering is opened up to extension simultaneously from section Curve of wing
Given thickness value is expanded inside to section curve to form；The lattice structure skeleton include be distributed on section Curve of wing and
Several lattice-sites in curve and it is connected to the lattice framework for forming several triangular crystal lattices between lattice-site, and two neighboring cutd open
It is connected between corresponding lattice-site by lattice framework on face, constitutes several triangular prism lattice structures；The lattice structure skeleton
A propeller-blade section section is collectively formed with covering, multiple section sections constitute 3D printing rectangle paddle blade structure.
Alternative laser sintering process directly makes the coefficient 3D metal of above-mentioned lattice-covering after having designed blade
The paddle blade structure of printing then can need to be added some packing materials in blade inner space, guarantee the stability of blade.
Further, the spacing between the adjacent sections is in 1st/20th of blade length.
Further, the thickness value of the covering is in 1-2mm.
Further, the distribution of the lattice-site and lattice framework in the section aerofoil profile meets pneumatic Spreading requirements.
Further, crystalline substance is passed through according to the setting rule of smallest triangle area between the lattice-site on the same profile
Framework is connected to form several triangular crystal lattices.
Further, the section radius of the lattice framework is in 1mm.
Further, it is disposed with the foam insert for realizing support in the lattice structure skeleton, maintains the shape of aerofoil profile,
Keep the stability of structure.
Further, it is provided with blade connector at the rectangle paddle blade structure blade root, is integrally formed with covering, close to blade root
Locate prepared screw-bolt hole.
The utility model has the advantages that a kind of helicopter blade structure based on 3D metallic print provided by the invention, relative to existing skill
Art has the advantage that the lattice structure filled inside (1) 3D printing Metal Rotor Blade can bear stretch bending torsion etc. well and carry
Lotus is inserted lattice inside blade, and covering collective effect compared with the labyrinth inside traditional composite material blade,
Keep blade design more simple and effective, blade more lightweight；(2) using 3D printing technique straight forming, can largely shorten
Manufacture and design the period, reduce processing cost, promotes the integrated design and processing of the helicopter blade of 3D printing metal, while
The application field of 3D printing technique is widened.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of triangular prism lattice structure in the present invention；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of propeller-blade section in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of lattice framework connection type between adjacent sections in the embodiment of the present invention；
Fig. 5 is half structural schematic diagram for filling lattice structure rectangle blade in the embodiment of the present invention；
It include: 1, lattice structure skeleton in figure, 2, C-type beam structure, 3, U-shaped girder construction, 4, trailing-edge strip part, 5, covering,
6, blade connector, 7, bolt hole.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
It is illustrated in figure 2 a kind of helicopter blade structure based on 3D metallic print, the covering 5 including rectangle blade outer layer
And it is filled in the lattice structure skeleton 1 in covering 5；
Wherein, the rectangle blade is divided into 20 identical sections, and covering 5 is opened up to extension simultaneously from section Curve of wing
1mm thickness value is expanded inside to section curve to form；The lattice structure skeleton 1 includes being distributed on section Curve of wing and bent
Several lattice-sites in line and it is connected to the lattice framework that several triangular crystal lattices are formed between lattice-site, and two neighboring section
(as shown in Figure 4) is connected by lattice framework between upper corresponding lattice-site, constitutes several triangular prism lattice knots as shown in Figure 1
Structure；The lattice structure skeleton 1 collectively forms a propeller-blade section section with covering 5, and multiple section sections constitute 3D printing rectangle paddle
Impeller structure.
As shown in figure 3, lattice structure skeleton be divided into before, during and after three sections: section leading edge formed c-type crossbeam structure 2, from paddle
Point is filled with triangular prism lattice along blade radial arrays to main airfoil section end, main carrying exhibition to centrifugal force.Opening is set
Meter is so that the quality of its blade interior surface is readily inspected and controls；The section middle section forms U-shaped girder construction 3, from blade tip to
Main airfoil section end is filled with triangular prism lattice along blade radial arrays, in order to support aerofoil profile, improves the torsion stiffness of blade；It cuts open
Face trailing-edge strip part 4 is filled from blade tip to main airfoil section end with triangular prism lattice along blade radial arrays, primarily to increasing
Add the shimmy rigidity of blade entirety, consequently facilitating the shimmy frequency of adjustment blade.
In the present embodiment, filler foam is added in the vacant inside of lattice structure skeleton 1, maintains the shape of aerofoil profile, protects
Hold the stability of structure；As shown in figure 5, be provided with blade connector 6 at rectangle paddle blade structure blade root, inside do not use triangular prism
Lattice structure filling, but filled with foam, it is integrally formed with covering 5, without segmental machining, and reserves two at blade root
Bolt hole 7 facilitates and is fixed with the connector of bolt group and propeller hub, so that stable connection is reliable.The side of connector and main airfoil section connects
Connect is to smoothly transit.
In the present invention, triangular prism lattice structure is that space square is evolved, and the power of lattice structure is analyzed by software
Characteristic is learned, show that triangular prism lattice dynamics performance is best, and structure is simple, facilitates parametric modeling, therefore present invention selection three
Basic unit of the prism lattice structure as 3D printing lattice structure skeleton.After as soon as two triangular prisms co-own face,
A space hexahedron can be formed.According to the setting of smallest triangle area rule, the point in the aerofoil profile and section of section is selected,
As each vertex of triangular prism lattice, the corresponding vertex of two adjacent sections is connected, the triangular prism of lattice is formed
Lattice structure.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of helicopter blade structure based on 3D metallic print, which is characterized in that the covering (5) including rectangle blade outer layer
And it is filled in the lattice structure skeleton (1) in covering (5)；
Wherein, the rectangle blade is divided into several identical sections, and covering (5) from section Curve of wing open up to extend and to
Given thickness value is expanded inside section curve to form；The lattice structure skeleton (1) includes being distributed on section Curve of wing
And several lattice-sites in curve and it is connected to the lattice framework that several triangular crystal lattices are formed between lattice-site, and two neighboring
It is connected between corresponding lattice-site by lattice framework on section, constitutes several triangular prism lattice structures；The lattice structure bone
Frame (1) and covering (5) collectively form a propeller-blade section section, and multiple section sections constitute 3D printing rectangle paddle blade structure.
2. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that the phase
Spacing between adjacent section is in 1st/20th of blade length.
3. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that the illiteracy
The thickness value of skin (5) is in 1-2mm.
4. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that described to cut open
The distribution of lattice-site and lattice framework in the aerofoil profile of face meets pneumatic Spreading requirements.
5. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that described same
Several triangles are connected to form by lattice framework according to the setting rule of smallest triangle area between lattice-site on one section
Lattice.
6. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that the crystalline substance
The section radius of framework is in 1mm.
7. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that the crystalline substance
The foam insert for realizing support is disposed in lattice structural framework (1).
8. a kind of helicopter blade structure based on 3D metallic print according to claim 1, which is characterized in that the square
Blade connector (6) are provided at shape paddle blade structure blade root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645409.9U CN209080154U (en) | 2018-10-11 | 2018-10-11 | A kind of helicopter blade structure based on 3D metallic print |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821645409.9U CN209080154U (en) | 2018-10-11 | 2018-10-11 | A kind of helicopter blade structure based on 3D metallic print |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209080154U true CN209080154U (en) | 2019-07-09 |
Family
ID=67118806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821645409.9U Expired - Fee Related CN209080154U (en) | 2018-10-11 | 2018-10-11 | A kind of helicopter blade structure based on 3D metallic print |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209080154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113598896A (en) * | 2021-09-06 | 2021-11-05 | 西安凯棣医疗器械有限责任公司 | Circumcision propulsion mechanism and circumcision stitching instrument convenient to operate and use thereof |
| WO2022145859A1 (en) * | 2020-12-28 | 2022-07-07 | 창원대학교산학협력단 | Apparatus for high temperature gas, including three-dimensional lattice structure, and method for manufacturing same |
-
2018
- 2018-10-11 CN CN201821645409.9U patent/CN209080154U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022145859A1 (en) * | 2020-12-28 | 2022-07-07 | 창원대학교산학협력단 | Apparatus for high temperature gas, including three-dimensional lattice structure, and method for manufacturing same |
| CN113598896A (en) * | 2021-09-06 | 2021-11-05 | 西安凯棣医疗器械有限责任公司 | Circumcision propulsion mechanism and circumcision stitching instrument convenient to operate and use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 Termination date: 20211011 |