CN107775720A - A kind of method that fastener is installed in sandwich - Google Patents
A kind of method that fastener is installed in sandwich Download PDFInfo
- Publication number
- CN107775720A CN107775720A CN201610728655.XA CN201610728655A CN107775720A CN 107775720 A CN107775720 A CN 107775720A CN 201610728655 A CN201610728655 A CN 201610728655A CN 107775720 A CN107775720 A CN 107775720A
- Authority
- CN
- China
- Prior art keywords
- fastener
- sandwich
- blind hole
- hole
- drilled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The method that fastener is installed in a kind of sandwich of the present invention, the first drilling blind hole first in sandwich, blind hole diameter are more than fastener head maximum gauge, and blind hole depth is less than upper covering and core thickness sum；Pasty state glue is filled up in blind hole, is solidified；The hole to match with fastener is drilled on the colloid of solidification；If countersunk fastener, the corresponding countersunk head nest of ream system on colloid；Fastener is installed in the hole being drilled.Present invention process is simple, and increase weight is few, is easy to the drilling of sandwich countersunk fastener and installation method that assembling stage is constructed.
Description
Technical field
The present invention relates to mechanical manufacturing technology, and fastener technology is particularly installed on aircraft sandwich structures.
Background technology
Sandwich generally includes honeycomb sandwich construction and the major class of foamed sandwich structure two, by upper and lower two layers of covering and folder
Honeycomb or foam core material composition in centre, is a kind of structure for being widely used in aircraft time load part, have it is in light weight,
The characteristics of rigidity is high.Sandwich is suitable to bear distributed load, but bears the poor ability of concentrfated load.For sandwich
Fastener is typically bolt or screw.When installing fastener in sandwich, load is necessarily concentrated in the installation position of fastener
Lotus position, it is necessary to which carrying out specially treated can just make sandwich bear the concentrfated load that fastener transmits, and generally have with lower section
Method.
The first is that harder material is inlayed in the place for needing to install fastener in sandwich（Such as metal or composite wood
Material）Bushing or cushion block.Bushing or cushion block need the upper and lower covering in sandwich with being installed before core gluing.
Honeycomb sandwich construction is only applicable to second, in the region for needing to install fastener, in the honeycomb of comb core
Filling-foam glue in hole, then carried out with upper and lower covering glued.Harder material is formed after foaming adhesive curing, makes to bear to concentrate
The ability of load is improved.
The third is in the regional area for needing to install fastener, and core is cut off, upper and lower covering is fit together
As solid construction.The gross thickness of usual upper and lower covering is too small, also needs to increase among two layers of covering to increase thickness herein
Material, the several layers of composites of Ru Duopu, or add metallic gasket.Between thicker interlayer position and relatively thin solid position,
It is the transition region that thickness gradually changes.
Above-mentioned three kinds of methods, have one it is common the shortcomings that：Before upper and lower covering and core gluing, it is necessary to accurate（The
It is a kind of）Or substantially（Second, third kind）Determine the installation site of fastener.If sandwich be installed to upper level part it
Before can not determine the installation site of fastener, these three methods can not all use.In addition, these three methods can all increase it is more
Weight.The shortcomings that second method, also resides in it and may be only available for honeycomb sandwich construction, can not be applied to foamed sandwich structure.The
Three kinds of methods add the complexity of manufacturing process because the change of local thickness and material be present.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind without that will determine to fasten before sandwich gluing
Part installation site, the thickness for not changing sandwich and material, increase weight is less, simple to operate is installed in sandwich
The method of fastener.
In order to solve the above technical problems, the method for fastener is installed, first in interlayer knot in a kind of sandwich of the present invention
First drilling blind hole on structure, blind hole diameter are more than fastener head maximum gauge, and blind hole depth is less than upper covering and core thickness sum；
Pasty state glue is filled up in blind hole, is solidified；The hole to match with fastener is drilled on the colloid of solidification；If countersunk head fastens
Part, the corresponding countersunk head nest of ream system on colloid；Fastener is installed in the hole being drilled.
The present invention has following good effect compared to prior art：
The present invention is before the glued shaping of sandwich, without determining the installation site of fastener, without in advance to sandwich
Carry out any specially treated., can be in its any part by drilling of the present invention, installation when sandwich is installed to upper level part
Fastener；
Sandwich is a structure that each part thickness is uniform, material is unified, therefore its manufacturing process is extremely simple；
Glue is only filled at fastener receptacles, makes hole that there is enough intensity to bear concentrfated load, and the weight brought increases
Add considerably less.
Brief description of the drawings
Fig. 1 is the sandwich diagrammatic cross-section for installing fastener.
In figure：Covering on 1,2 cores, 3 times coverings, 4 colloids, 5 fasteners.
Embodiment
With reference to embodiment, the invention will be further described.
Refering to Fig. 1, major diameter blind hole is bored from upper covering 1 first in sandwich, its diameter is not less than the head of fastener
Portion's diameter；The depth of blind hole retains covering 3 and is defined to pierce upper covering 1 and core 2, and retaining covering 3 has preferably
Intensity.After blind hole is drilled, pasty state glue is filled up in blind hole.After adhesive curing turns into solid, just turn into herein one it is firm
Material, possesses the intensity born required for concentrfated load.The aperture to match with fastener is finally drilled on colloid 4, if
It is countersunk fastener, it is also necessary to the corresponding countersunk head nest of ream system on colloid 4；Fastener 5 is installed in the hole being drilled.
Claims (1)
1. the method for fastener is installed in a kind of sandwich, it is characterised in that first drilling blind hole, blind hole first in sandwich
Diameter is more than fastener head maximum gauge, and blind hole depth is less than upper covering and core thickness sum；Pasty state is filled up in blind hole
Glue, solidification；The hole to match with fastener is drilled on the colloid of solidification；If countersunk fastener, the ream phase on colloid
The countersunk head nest answered；Fastener is installed in the hole being drilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728655.XA CN107775720A (en) | 2016-08-25 | 2016-08-25 | A kind of method that fastener is installed in sandwich |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728655.XA CN107775720A (en) | 2016-08-25 | 2016-08-25 | A kind of method that fastener is installed in sandwich |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107775720A true CN107775720A (en) | 2018-03-09 |
Family
ID=61439017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610728655.XA Pending CN107775720A (en) | 2016-08-25 | 2016-08-25 | A kind of method that fastener is installed in sandwich |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107775720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290626A (en) * | 2021-05-12 | 2021-08-24 | 上海复合材料科技有限公司 | Skin hole making device assembled after bearing cylinder and hole making method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101596667A (en) * | 2009-04-23 | 2009-12-09 | 贵州航天精工制造有限公司 | A kind of on composite the method and the structure of embedding nut |
| JP5005721B2 (en) * | 2009-03-23 | 2012-08-22 | 株式会社朝日堂 | Display board mounting structure |
| CN103586500A (en) * | 2013-11-04 | 2014-02-19 | 中航成飞民用飞机有限责任公司 | Hole making method for honeycomb interlayer composite materials |
| CN104690769A (en) * | 2015-02-12 | 2015-06-10 | 大连崇达电路有限公司 | Processing method of finished holes of circuit board with inner-layer copper thickness of more than 420 micrometers |
| CN105885708A (en) * | 2008-10-09 | 2016-08-24 | 泽菲罗斯公司 | Provision of inserts |
-
2016
- 2016-08-25 CN CN201610728655.XA patent/CN107775720A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885708A (en) * | 2008-10-09 | 2016-08-24 | 泽菲罗斯公司 | Provision of inserts |
| JP5005721B2 (en) * | 2009-03-23 | 2012-08-22 | 株式会社朝日堂 | Display board mounting structure |
| CN101596667A (en) * | 2009-04-23 | 2009-12-09 | 贵州航天精工制造有限公司 | A kind of on composite the method and the structure of embedding nut |
| CN103586500A (en) * | 2013-11-04 | 2014-02-19 | 中航成飞民用飞机有限责任公司 | Hole making method for honeycomb interlayer composite materials |
| CN104690769A (en) * | 2015-02-12 | 2015-06-10 | 大连崇达电路有限公司 | Processing method of finished holes of circuit board with inner-layer copper thickness of more than 420 micrometers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290626A (en) * | 2021-05-12 | 2021-08-24 | 上海复合材料科技有限公司 | Skin hole making device assembled after bearing cylinder and hole making method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
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| WD01 | Invention patent application deemed withdrawn after publication |