CN107575461A - A kind of marmem interference engagement is spirally connected component - Google Patents
A kind of marmem interference engagement is spirally connected component Download PDFInfo
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- CN107575461A CN107575461A CN201710775596.6A CN201710775596A CN107575461A CN 107575461 A CN107575461 A CN 107575461A CN 201710775596 A CN201710775596 A CN 201710775596A CN 107575461 A CN107575461 A CN 107575461A
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- China
- Prior art keywords
- marmem
- bolt
- spirally connected
- component
- nut
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Abstract
It is spirally connected component the invention discloses a kind of marmem interference engagement, including：Marmem bolt and the marmem nut coordinated with marmem bolt thread；Bolt blank after tensile pre-deformation is processed into standard external, nut blank after reaming predeformation is processed into and bolted standard female, after the component that is spirally connected completes assembling with connected piece, heated to overall, marmem bolt is heated to reply, and bolt length reduces, and the diameter of bolt uniformly becomes big, with connected hole rows into uniform interference, the shortcomings of interfering exoncoma is avoided the occurrence of；Marmem nut is heated to reply, and nut uniform diameter reduces, clamp bolt, and loose phenomenon occurs in the component long-term work that prevents from being spirally connected.
Description
Technical field
It is spirally connected component the present invention relates to marmem interference engagement.
Background technology
Interference connection refers to that the nail rod diameter after assembling is more than a kind of connected mode of assembling front aperture, and interference is connected to tired
Generic connectivity is superior in terms of labor life-span and sealing.
The bolt of commonly used interference connection is titanium alloy high locked bolts, and it, which has, connects reliable, in light weight, controllable preload
The features such as lotus, high fatigue life, it is widely used in aircraft assembling.In airliner C919 wing wallboard connection
Substantial amounts of titanium alloy high locked bolts interference connection is employed, titanium alloy high locked bolts, which play, to be mitigated aircraft weight and improve the tired longevity
The double effectses of life.Major defect present in interference connection at present, such as：Amount of interference is small, amount of interference is uneven, exoncoma is existing
As, generally assembling is using forced, required installing space is big, be bolted to and bear certain load after, the component that is spirally connected can produce
Raw loosening etc..
The content of the invention
The present invention is directed to above-mentioned technical problem, proposes that one kind can effectively solve plain interference fit bolt and amount of interference be present
There is the shortcomings of exoncoma in small, amount of interference non-uniform phenomenon and connection procedure, while effectively prevent the component generation loaded that is spirally connected
The marmem interference engagement of loose phenomenon is spirally connected component.
To achieve the above objectives, can be achieved through the following technical solutions：
A kind of marmem interference engagement is spirally connected component, including：Marmem bolt and with shape memory close
The marmem nut that golden bolt thread coordinates；
Wherein, marmem interference engagement is spirally connected component heating reply front bolt diameter less than connected bore dia
0.01-0.5mm；Marmem interference engagement, which is spirally connected with connected unthreaded hole to belong to after component heating is replied, interferes connection, does
The amount of relating to is 1-3%, and wherein amount of interference can pre- elongation be realized by changing the axial direction of bolt.
Further, shape memory alloy material Ti-Ni；Using the marmem bolt axial direction of Ti-Ni materials
Elongation is 7-12%, can recovery strain be 6-8%, the expanding amount of marmem nut is 7-12%, can recovery strain be
6-8%, insulation is needed after the component strain that is now spirally connected in liquid nitrogen, after completing assembling under low temperature, the component recovery that is spirally connected is to room temperature, i.e.,
It is feasible to be connected into interference.
Further, shape memory alloy material Fe-Mn-Si, using the marmem spiral shell of Fe-Mn-Si materials
Stud shaft to elongation be 4-10%, can recovery strain be 1-3%, the expanding amount of marmem nut is 4-10%, can be replied
Strain as 1-3%, preserved at room temperature after the component strain that is now spirally connected, the component that needs to be spirally connected after use is heated to 350-500 DEG C, protects
Warm 10-15min, is cooled to room temperature, you can row connects into interference.
Especially, marmem bolt axial direction elongation can be realized by changing stretching-machine work shift, specifically,
Blank is fixed on stretching machine grip holder both ends, controls the axial working position of chuck to shift near and obtain the examination of axially different elongation
Part, by the machined shaping shape memory alloys bolt of the marmem test specimen after stretching；Marmem nut is expanding
Different expanding bars may be selected to realize in amount, specifically, hollow outer-hexagonal blank is placed on special reaming grinding tool, according to
The expanding bar of different distortion amount realizes the different predeformation of nut, will be expanding after hollow outer-hexagonal test specimen it is machined into spiral shell
The internal thread that bolt external screw thread coordinates, obtains marmem nut.
The invention has the advantages that：Uniformly interference connection is realized by the reverse transformation of material, avoided due to forced peace
Amount of interference caused by dress is uneven and the defects of exoncoma occurs.Before installation, bolt is that gap coordinates with connected unthreaded hole, installation
After the completion of, bolt forms uniformly interference with connected piece unthreaded hole and connected.Ti-Ni Reverse Martensitic Transformation Temperatures are normal temperature, Fe-Mn-Si anti-phases
Become heating recovery temperature as 350-500 DEG C, can avoid using naked light；Check bolt is completed based on material phase-change characteristic itself
Effect, material restoring force is big, and anti-loosing effect is reliable.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
Can be practiced according to the content of specification, and in order to allow it is of the invention with above-mentioned other purposes, feature and advantage can be brighter
It is aobvious understandable, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Totally 5 accompanying drawings of the invention, wherein：
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is radially expanding deformation schematic diagram；
The marmem bolt that Fig. 3 is the present invention is put into connected piece unthreaded hole schematic diagram；
Fig. 4 is schematic diagram after marmem bolts assemblies nut of the invention；
Fig. 5 be the present invention marmem be spirally connected component reply when mechanical analysis figure.
Embodiment
Further detailed elaboration is done to the present invention below in conjunction with the accompanying drawings, it should be apparent that, drawings in the following description
Some case study on implementation that only present invention records, for those of ordinary skill in the art, can also be according to these accompanying drawings
Obtain other accompanying drawings.
As depicted in figs. 1 and 2, a kind of marmem interference engagement is spirally connected component, including：Marmem bolt
1 and with marmem bolt thread coordinate marmem nut 2；
Marmem bolt 1 includes the bolt head 1-1 contacted with connected piece；(refer to and connected with connected unthreaded hole
The default connection through hole of fitting) the capable polished rod portion 1-2 into interference engagement；The threaded portion 1-3 being connected with nut thread.Shape memory
The structure of alloy nut 2 includes the inner bolt hole being connected with marmem bolt thread portion and the outer cylindrical body fixed with spanner.
Wherein, marmem interference engagement is spirally connected component heating reply front bolt diameter less than connected bore dia
0.01-0.5mm；Marmem interference engagement, which is spirally connected with connected unthreaded hole to belong to after component heating is replied, interferes connection, does
The amount of relating to is 1-3%.
Further, shape memory alloy material Ti-Ni；Using the marmem bolt axial direction of Ti-Ni materials
Elongation is 7-12%, can recovery strain be 6-8%, the expanding amount of marmem nut is 7-12%, can recovery strain be
6-8%, insulation is needed after the component strain that is now spirally connected in liquid nitrogen, after completing assembling under low temperature, the component recovery that is spirally connected is to room temperature, i.e.,
It is feasible to be connected into interference.
Further, shape memory alloy material Fe-Mn-Si, using the marmem spiral shell of Fe-Mn-Si materials
Stud shaft to elongation be 4-10%, can recovery strain be 1-3%, the expanding amount of marmem nut is 4-10%, can be replied
Strain as 1-3%, preserved at room temperature after the component strain that is now spirally connected, the component that needs to be spirally connected after use is heated to 350-500 DEG C, protects
Warm 10-15min, is cooled to room temperature, you can row connects into interference.
As shown in figure 3, marmem interference is spirally connected, component is connected in use, marmem bolt 1 is put into
In the unthreaded hole (default connecting hole) of fitting；Now marmem bolt 1 coordinates with connected piece 3 for gap, such as Fig. 4 institutes
Show, marmem nut 2 is screwed in the threaded portion 1-3 of unthreaded hole (default connecting hole) end for stretching out in connected piece, made
Marmem nut 2 is screwed with pre- spanner, until reaching the pretightning force of setting, spiral shell then is interfered to marmem
Connected components are heated, and marmem is because reverse transformation acts on, as shown in Figure 5, on the one hand, marmem bolt 1
Shape memory reply can occur, axially shorten, diameter becomes big, and the unthreaded hole of marmem bolt 1 and connected piece 4 is (default
Connecting hole) go into uniform interference connection；On the other hand, shape memory reply can occur for marmem nut 2, and diameter becomes
It is small, banding marmem bolt 1 as shown in Figure 5, prevent marmem interference to be spirally connected component during loaded
Generation loose phenomenon.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member without departing from the scope of the present invention, when the technology contents using the disclosure above make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification made for any of the above embodiments, in the range of still falling within technical solution of the present invention.
Claims (5)
- The component 1. a kind of marmem interference engagement is spirally connected, it is characterised in that including：Marmem bolt and and shape The marmem nut that shape memory alloys bolt thread coordinates；Wherein, marmem interference engagement is spirally connected component heating reply front bolt diameter less than connected bore dia 0.01- 0.5mm；Marmem interference engagement, which is spirally connected with connected unthreaded hole to belong to after component heating is replied, interferes connection, and amount of interference is 1-3%.
- The component 2. a kind of marmem interference engagement according to claim 1 is spirally connected, it is characterised in that：Shape memory Alloy material is Ti-Ni.
- The component 3. a kind of marmem interference engagement according to claim 1 is spirally connected, it is characterised in that：Shape memory Alloy material is Fe-Mn-Si.
- The component 4. a kind of marmem interference engagement according to claim 2 is spirally connected, it is characterised in that：Shape memory Alloy bolt axial direction elongation is 7-12%, can recovery strain be 6-8%, the expanding amount of marmem nut is 7-12%, Can recovery strain be 6-8%.
- The component 5. a kind of marmem interference engagement according to claim 3 is spirally connected, it is characterised in that：Shape memory Alloy bolt axial direction elongation is 4-10%, can recovery strain be 1-3%, the expanding amount of marmem nut is 4-10%, Can recovery strain be 1-3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775596.6A CN107575461A (en) | 2017-08-31 | 2017-08-31 | A kind of marmem interference engagement is spirally connected component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775596.6A CN107575461A (en) | 2017-08-31 | 2017-08-31 | A kind of marmem interference engagement is spirally connected component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575461A true CN107575461A (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710775596.6A Pending CN107575461A (en) | 2017-08-31 | 2017-08-31 | A kind of marmem interference engagement is spirally connected component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112874A (en) * | 2020-08-15 | 2020-12-22 | 西北工业大学 | Connecting assembly manufactured based on memory alloy and assembling method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2625227A1 (en) * | 1987-12-23 | 1989-06-30 | Intraviss Sn | Alloy steel for nuts and bolts with checking of tightening using ultrasound |
| JPH0861346A (en) * | 1994-08-17 | 1996-03-08 | Ricoh Co Ltd | Screw, bolt, and nut |
| CN1140241A (en) * | 1995-07-07 | 1997-01-15 | 陈福祥 | Tight-fitting threaded parts |
| CN1450279A (en) * | 2003-04-23 | 2003-10-22 | 刘文西 | Shape memory check screw device |
| CN103103456A (en) * | 2013-01-17 | 2013-05-15 | 大连海事大学 | Fe-Mn-Si shape memory alloy check bolt and manufacturing and using methods thereof |
-
2017
- 2017-08-31 CN CN201710775596.6A patent/CN107575461A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2625227A1 (en) * | 1987-12-23 | 1989-06-30 | Intraviss Sn | Alloy steel for nuts and bolts with checking of tightening using ultrasound |
| JPH0861346A (en) * | 1994-08-17 | 1996-03-08 | Ricoh Co Ltd | Screw, bolt, and nut |
| CN1140241A (en) * | 1995-07-07 | 1997-01-15 | 陈福祥 | Tight-fitting threaded parts |
| CN1450279A (en) * | 2003-04-23 | 2003-10-22 | 刘文西 | Shape memory check screw device |
| CN103103456A (en) * | 2013-01-17 | 2013-05-15 | 大连海事大学 | Fe-Mn-Si shape memory alloy check bolt and manufacturing and using methods thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112874A (en) * | 2020-08-15 | 2020-12-22 | 西北工业大学 | Connecting assembly manufactured based on memory alloy and assembling method thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |
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| RJ01 | Rejection of invention patent application after publication |