CN203541316U - Radial scalable expansion tube for radical extension of shape-memory alloy tube joint - Google Patents
Radial scalable expansion tube for radical extension of shape-memory alloy tube joint Download PDFInfo
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- CN203541316U CN203541316U CN201320553865.1U CN201320553865U CN203541316U CN 203541316 U CN203541316 U CN 203541316U CN 201320553865 U CN201320553865 U CN 201320553865U CN 203541316 U CN203541316 U CN 203541316U
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- pipe joint
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- memory alloy
- tube
- opening groove
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Abstract
The utility model relates to radical extension tool for shape-memory alloy tube joints, in particular to a radial scalable expansion tube for the radical extension of the shape-memory alloy tube joints. The radial scalable expansion tube is characterized in that a plurality of left-hand open straight slots and right-hand open straight slots are respectively formed in a tube body along the directions of both openings to separate the tube body into a plurality of left spring pieces and right spring pieces. The aim is to design a radial scalable expansion tube for the shape-memory alloy tubes joints with a large extension range and an even overall radical extension. Compared with the prior art, the joint strength and axial symmetry of the shape-memory alloy tube joints can be improved by using the radial scalable expansion tube as the radical extension tool to avoid permanent residual deformation and ensure overall performance. The radial extension of the shape-memory alloy tube joints can be easily controlled so as to be used in the radical extension of small-bore shape-memory alloy tube joints.
Description
Technical field
The utility model relates to the hole enlargement tool for marmem pipe joint, particularly a kind of radial expansion expander for marmem pipe joint hole enlargement.
Background technology
Marmem is a kind of intellectual material that can remember original shape.Aspect SME, most typical application is exactly marmem pipe joint.
Marmem pipe joint can be realized the connection of two pipelines, and this connected mode had both been different from rib machine tool and has connected, and was also different from welding.Marmem pipe joint is simple cylinder, carries out machining under parent phase state, and its internal diameter is more smaller than the external diameter of connected piece, and internal diameter is processed with convex ridge.During application, marmem pipe joint is cooled to martensitic state, by mechanical force, to pipe joint hole enlargement, makes the internal diameter of pipe joint slightly larger than being taken over external diameter.Under low-temperature condition, connected pipe and pipe joint are assembled together, and then the shape memory pipe joint integral body assembling is heated to a certain temperature, marmem pipe joint is undergone phase transition, its internal diameter size returns to the size before distortion because of SME, but in the process of recovering in shape, owing to being subject to the restriction of connected pipe, it is produced to restraining force, thereby two connected pipes are closely connected together.
All kinds of pipe joints of marmem manufacture have reliability high, be difficult for there is seepage, simple in structure, easy for installation and save the advantages such as assembly space, thereby be widely used in fields such as Aeronautics and Astronautics and boats and ships.But the hole enlargement of marmem pipe joint is at present all to adopt the tapered punch of rigidity to pass to realize hole enlargement in pipeline, due to tapered punch from pipe joint through time be that part contacts with the inwall of pipe joint, therefore pipe joint is not that bulk deformation occurs in hole enlargement process, thereby the inner meeting of this explained hereafter pipe joint out exists very large residual stress.These residual stress not only can affect the dimensional accuracy of pipe joint, even also may in the shape recovery process after assembling, exist, and affect switching performance, and can make the anti-stress corrosion performance of pipe joint decline, thereby reduce its service life.In addition, when shape memory pipe joint being carried out to machinery expanding with tapered punch, often can cause local plastic deformation or the scuffing of pipe joint inner surface, thereby can affect SME and the fastening force of marmem pipe joint.
Summary of the invention
The purpose of this utility model is to design a kind of marmem pipe joint hole enlargement that can be used in, and radial expansion amplitude is large, and the uniform radial expansion expander of whole hole enlargement.
In order to achieve the above object, the utility model adopts following technical solution: a kind of radial expansion expander for marmem pipe joint hole enlargement, it is characterized in that with it the wall of body, along two ends port direction, have some left-hand opening grooves and dextrad opening groove, the wall status of described body is slit into some left shell fragments and right shell fragment.
The utility model is in order to make body when the hole enlargement, in same cross section, each particle is even to outer expansion force, each particle radial expansion is even, technique scheme is further arranged: described left-hand opening groove or dextrad opening groove are evenly arranged on it the wall of described body, make the described left shell fragment cut apart or described right shell fragment size evenly.
The utility model is in order to make body both sides when the hole enlargement, whole even to outer expansion force, overall radial is evenly flexible, guarantee axial symmetry, technique scheme is further arranged: described left-hand opening groove and the cross arrangement of dextrad opening groove arrange, described left-hand opening groove is arranged on described right shell fragment, and described dextrad opening groove is arranged on described left shell fragment.
The utility model is in the hole enlargement of marmem pipe joint, prevent the hole enlargement amount at the annular boss place in marmem pipe joint excessive, avoid marmem pipe joint land area produce exceed the maximum of material can recovery strain amount, produce permanent permanent set, the overall performance that affects marmem pipe joint, further arranges technique scheme: on the outer wall of described body, be provided with marmem pipe joint tube wall in the annular groove that matches of annular boss.
The utility model compared with prior art, the beneficial effect having: because radial expansion amplitude is large, the hole enlargement size of marmem pipe joint is easily controlled; Apply radial expansion expander of the present utility model and can realize the whole hole enlargement of marmem pipe joint, improve bonding strength and the axial symmetry of marmem pipe joint; Can avoid producing permanent permanent set, guarantee overall performance simultaneously; Can be for the hole enlargement of small-bore marmem pipe joint.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present embodiment.
Fig. 2 is the view of Fig. 1 left port.
Fig. 3 is the view of Fig. 1 right output port.
Fig. 4 is the structural representation of hole enlargement object shapes pipe joint of memory alloy.
Fig. 5 is that the present embodiment is being actually used in the work schematic diagram of marmem pipe joint hole enlargement.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the present embodiment comprises body 1, with it the wall of described body 1, along two ends port direction, has some left-hand opening grooves 4 and dextrad opening groove 2, and the wall status of described body 1 is slit into some left shell fragments 6 and right shell fragment 5
As shown in Figure 2 and Figure 3, described left-hand opening groove 4 or dextrad opening groove 2 are evenly arranged on it the wall of described body 1, make the described right shell fragment 5 cut apart or described left shell fragment 6 sizes evenly, make body when hole enlargement, in same cross section, each particle is even to outer expansion force, and each particle radial expansion is even.
Again as shown in Figure 1, Figure 2, shown in Fig. 3, described left-hand opening groove 4 and the 2 cross arrangement settings of dextrad opening groove, described left-hand opening groove 4 is arranged on described right shell fragment 5, described dextrad opening groove 2 is arranged on described left shell fragment 6, make body both sides when hole enlargement, whole even to outer expansion force, overall radial is evenly flexible, guarantees axial symmetry.
In addition, in the hole enlargement at marmem pipe joint 8, prevent the hole enlargement amount at annular boss 7 places in marmem pipe joint excessive, avoid marmem pipe joint land area produce exceed the maximum of material can recovery strain amount, produce permanent permanent set, affect the overall performance of marmem pipe joint, on the outer wall of described body 1, be provided with marmem pipe joint tube wall in the annular groove 3 that matches of annular boss 7.
As shown in Figure 5, the present embodiment (take Fig. 4 the structure of marmem pipe joint be example) when being actually used in marmem pipe joint hole enlargement, outside the heat-preserving container 13 of liquid nitrogen 15 is housed, first the annular boss 7 that utilizes annular groove 3 on reaming sleeve pipe radially and marmem pipe joint radially reaming sleeve pipe 10 and marmem pipe joint 8 coordinates assembling, radially reaming sleeve pipe 10 is enclosed within on reaming primary push rod 9 again, then under the drive of forcing press, press machine output shaft 11 by transition connecting rod 17 with reaming primary push rod 9, radially reaming sleeve pipe 10, marmem pipe joint 8 enters in the heat-preserving container 13 that liquid nitrogen 15 is housed together, by marmem pipe joint 7 and radially the lower surface of reaming sleeve pipe 10 be positioned at respectively on the staged locating hole 18 in guide seats 14, then under the effect of forcing press, press machine output shaft 11 continues to advance downwards along pilot hole 16 with reaming primary push rod 9, cone boss 12 on reaming primary push rod 9 enters radially in reaming sleeve pipe 10, reaming sleeve pipe 10 even distending radially radially, radially 10 pairs of marmem pipe joints 8 of reaming sleeve pipe also carry out radially hole enlargement simultaneously, along with the cone boss 12 on reaming primary push rod 9 constantly advances downwards, the caliber of marmem pipe joint 8 obtains whole hole enlargement.After cone boss 12 is pushed out radially reaming sleeve pipe 10, radially reaming sleeve pipe 10 radial expansions reset, simultaneously when reaming primary push rod 9 upwards playbacks, marmem pipe joint 7 comes off from reaming sleeve pipe 10 radially, stay in the heat-preserving container 13 that liquid nitrogen is housed, make before installing, to be stored in liquid nitrogen after marmem pipe joint 7 hole enlargements, complete the hole enlargement of a marmem pipe joint 8.
Claims (4)
1. the radial expansion expander for marmem pipe joint hole enlargement, it is characterized in that with it the wall of body (1), along two ends port direction, have some left-hand opening grooves (4) and dextrad opening groove (2), the wall status of described body (1) is slit into some left shell fragments (6) and right shell fragment (5).
2. a kind of radial expansion expander for marmem pipe joint hole enlargement according to claim 1, it is characterized in that with it wall that described left-hand opening groove (4) or dextrad opening groove (2) be evenly arranged on described body (1), make the described right shell fragment (5) cut apart or described left shell fragment (6) size evenly.
3. a kind of radial expansion expander for marmem pipe joint hole enlargement according to claim 2, it is characterized in that described left-hand opening groove (4) and dextrad opening groove (2) cross arrangement setting, make described left-hand opening groove (4) be arranged on described right shell fragment (5) upper, described dextrad opening groove (2) is arranged on described left shell fragment (6).
4. a kind of radial expansion expander for marmem pipe joint hole enlargement according to claim 3, it is characterized in that being provided with on the outer wall of described body (1) with marmem pipe joint (8) tube wall in the annular groove (3) that matches of annular boss (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553865.1U CN203541316U (en) | 2013-09-03 | 2013-09-03 | Radial scalable expansion tube for radical extension of shape-memory alloy tube joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553865.1U CN203541316U (en) | 2013-09-03 | 2013-09-03 | Radial scalable expansion tube for radical extension of shape-memory alloy tube joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203541316U true CN203541316U (en) | 2014-04-16 |
Family
ID=50459485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320553865.1U Withdrawn - After Issue CN203541316U (en) | 2013-09-03 | 2013-09-03 | Radial scalable expansion tube for radical extension of shape-memory alloy tube joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203541316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433396A (en) * | 2013-09-03 | 2013-12-11 | 西安胜智航空科技有限公司 | Radial stretching expanding pipe for expanding shape memory alloy pipe joint |
| CN105583310A (en) * | 2014-10-20 | 2016-05-18 | 北京有色金属研究总院 | Hole-enlarging deforming device and method for metal pipe fitting |
-
2013
- 2013-09-03 CN CN201320553865.1U patent/CN203541316U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433396A (en) * | 2013-09-03 | 2013-12-11 | 西安胜智航空科技有限公司 | Radial stretching expanding pipe for expanding shape memory alloy pipe joint |
| CN103433396B (en) * | 2013-09-03 | 2015-09-09 | 西安胜智航空科技有限公司 | A kind of radial expansion expander expanding for marmem pipe joint |
| CN105583310A (en) * | 2014-10-20 | 2016-05-18 | 北京有色金属研究总院 | Hole-enlarging deforming device and method for metal pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150909 |
|
| RGAV | Abandon patent right to avoid regrant |