CN202291094U - Shape memory alloy pipe joint expanding device based on elastic medium - Google Patents
Shape memory alloy pipe joint expanding device based on elastic medium Download PDFInfo
- Publication number
- CN202291094U CN202291094U CN2011204382098U CN201120438209U CN202291094U CN 202291094 U CN202291094 U CN 202291094U CN 2011204382098 U CN2011204382098 U CN 2011204382098U CN 201120438209 U CN201120438209 U CN 201120438209U CN 202291094 U CN202291094 U CN 202291094U
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- pipe joint
- seaming chuck
- pressure head
- push
- elastic
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Abstract
The utility model aims at providing a shape memory alloy pipe joint expanding device based on an elastic medium. The shape memory alloy pipe joint expanding device comprises a base plate, a fixed plate, an upper pressure head, a lower pressure head, a spring, an elastic rod, an elastic ring and a punch head, wherein the upper pressure head is arranged on the lower pressure head; one end of the elastic rod is arranged in the lower pressure head, and the other end of the elastic rod is arranged in the upper pressure head; the elastic ring is sleeved on the elastic rod; the fixed plate is connected with the base plate; the upper pressure head is connected with the fixed plate and the base plate through a bolt; a spring is arranged on the bolt; one end of the spring is connected with the fixed plate; the other end of the spring is connected with the lower pressure head; one end of the punch head is arranged in the fixed plate; and the other end of the punch head is arranged in the lower pressure head and connected with the elastic rod. The shape memory alloy pipe joint expanding device is simple in structure and easy to manufacture; and a shape memory alloy pipe joint produced by the shape memory alloy pipe joint expanding device has the advantages of global deformation under static force, deformation uniformity, high size precision, low residual stress and better connection performance.
Description
Technical field
The utility model relates to a kind of device that is used for the metal hole enlargement.
Background technology
Marmem (SMA) is a kind of new function material that grows up the beginning of the sixties in last century, has obtained in fields such as Aeronautics and Astronautics and medical treatment using widely.This material has SME, promptly after plastic deformation under a certain low-temperature condition, is heated a certain temperature again, and material can return to the state before the distortion again.Marmem pipe joint is exactly the SME that utilizes this alloy; Elder generation carries out the hole enlargement distortion at low temperatures with the pipe joint that internal diameter size is slightly less than external diameter of pipe to be connected; Make the external diameter of its internal diameter greater than the pipe that is attached thereto; Such two parts just are easy to be assembled together under this low-temperature condition; And then the joint integral body that assembles is heated to a certain temperature, make the size before the internal diameter size of marmem pipe joint returns to distortion, thereby two parts are closely connected together through restraining force.Pipe joint is one of the most ripe application of marmem, especially in the hydraulic air pipe-line system, uses the most extensive.All kinds of pipe joints of marmem manufacturing have the reliability height, seepage be difficult for to take place, simple in structure, easy for installation and save advantage such as assembly space.It is reported that existing 1,500,000 marmem pipe joints are applied to oil accident together not occur in the oil pressure pipeline of the various aircraft of the U.S..The U.S. has stipulated all must use marmem in all type aircraft fluid pressure lines.
But the hole enlargement of marmem pipe joint at present all is to adopt the tapered punch of rigidity to pass in manage to realize hole enlargement; Owing to contact with the inwall of pipe is local all the time when tapered punch passes in the pipe; Make that pipe is not that bulk deformation takes place in the hole enlargement process; Thereby the pipe joint that comes out of this explained hereafter is inner can have very big residual stress, and these residual stress not only can influence the dimensional accuracy of pipe joint, even also may exist in the shape recovery process after assembling; This can make the anti-stress corrosion performance of pipe joint descend, thereby reduces its fatigue life.In addition, when the shape memory pipe joint being carried out machinery expanding, cause the local plastic deformation or the scuffing of pipe joint inner surface easily, thereby can influence the SME and the fastening force of marmem pipe joint with tapered punch.
Summary of the invention
The purpose of the utility model is to provide and can on ordinary press, uses, and the marmem pipe joint expander based on elastic fluid that distortion is even, residual stress is little and dimensional accuracy is high that can be shaped expeditiously.
The purpose of the utility model is achieved in that
The utility model is characterized in that based on the marmem pipe joint expander of elastic fluid: comprise backing plate, fixed head, seaming chuck, push-down head, spring, flexible rod, elastic ring, drift, seaming chuck is installed on the push-down head; Flexible rod one end is installed in the push-down head, and the flexible rod other end is installed in the seaming chuck, and elastic ring is enclosed within on the flexible rod; Fixed head links to each other with backing plate, and seaming chuck connects fixed head and backing plate, mounting spring on the bolt through bolt; One end of spring connects fixed head; The other end of spring connects push-down head, and an end of drift is installed in the fixed head, and the other end of drift is installed in the push-down head and with flexible rod and links to each other.
The utility model can also comprise:
1, has flange on the described backing plate, have flange on the push-down head.
2, described bolt has four, and four holes that are used for construction bolt are set on the backing plate.
3, the contact-making surface of seaming chuck and the marmem that is used to process is the inclined-plane.
4, the outer shroud inwall of the stile of described push-down head and seaming chuck adopts and is slidingly matched.
The advantage of the utility model is:
1. do not need special-purpose experimental facilities, on common single action press, just can realize the two functions of pressing of single action, the hole enlargement of accomplishing marmem pipe joint is shaped.
2. apparatus structure is simple, is easy to make, and only needs a covering device, changes polyamine fat rubber ring, and the hole enlargement that just can accomplish the different-diameter marmem pipe joint is shaped, so highly versatile.
3. this device is easy to use, reliable, and cost is low, and high efficiency.
4. marmem pipe joint bulk deformation under static(al) of producing with this device, distortion is even, and dimensional accuracy is high, and residual stress is little, and switching performance is better.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is for touching sketch map on the utility model;
Fig. 3 is the elastic device structure chart of the utility model;
Fig. 4 is the counterdie structure chart of the utility model.
The specific embodiment
For example the utility model is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～4, the utility model is made up of patrix, elastic device and counterdie three parts, respectively like Fig. 2～shown in Figure 4.
Part of the upper die (Fig. 2) is made up of backing plate 1, fixed head 2, spring 3, seaming chuck 8, drift 9, ladder bolt 10 and set bolt 11.Have flange on the backing plate 1; Can directly link to each other with the top shoe of forcing press; Also have 4 stepped holes on it, the embedding of 4 ladder bolts 10 is adopted matched in clearance between ladder bolt 10 and the backing plate 1 when being used for the device assembling; The light face portion of ladder bolt is passed freely through, and backing plate 1 following also has 4 screwed holes, being screwed into of 4 set bolts when being used for fixed head 2 with drift 9 assemblings; The embedding that drift 9 was topped bar when the shoulder hole that the fixed head center is offered was used to assemble; 4 stepped holes of periphery are used for fixing the embedding of bolt 11; 4 peripheral through holes are used for passing of 4 ladder bolts 10; Adopt matched in clearance between these holes and the bolt, ladder bolt 10 is free to slide therebetween; The light face portion of 4 ladder bolts 10 is with 4 springs respectively, and screw thread one end and seaming chuck 8 link; Seaming chuck 8 centers also have a through hole, and adopt between the drift 9 and be slidingly matched, and seaming chuck 8 should adopt the inclined-plane with the contact-making surface of marmem pipe base 7 in addition, and can make its and contacting of workpiece is that line contacts, thus the friction when reducing hole enlargement.Such structure can realize the two functions of pressing of single action when patrix is worked.
Elastic device (Fig. 3) is made up of polyamine fat rubber bar 4 and polyamine fat rubber ring 5.Can directly be exerted pressure to rubber bar 4 ends by drift 9 during device work makes it produce local bulging; And the radial load that produces passed to rubber ring 5; And then make it produce whole radially bulging, by rubber ring 5 uniform radial load is passed to marmem pipe base 7 again and make it produce uniform integral expansion.
(Fig. 4) has only push-down head 6 in the part of the lower die.The latter half of push-down head 6 has flange, can directly be fixed on the workbench of forcing press, and its center has a blind hole, is used for the location of elastic device.The outer shroud inwall of seaming chuck 8 adopts and is slidingly matched in stile of giving prominence on it and the patrix, play the guiding role, and package unit is unlikely because of producing eccentricity issues when work influences the dimensional accuracy of part.
The enforcement of the utility model is divided into three phases, i.e. preparatory stage, hole enlargement stage and discharging stage.
Preparatory stage: at first the package unit that lumps together is placed on the workbench of forcing press,, with bolt counterdie is fixed on the workbench again to push down the flange of counterdie behind the good center with pressing plate.Start forcing press its top shoe is displaced downwardly to after upper die plate contacts, push down the flange of patrix again with pressing plate, and patrix is fixed on the forcing press top shoe with bolt.Start forcing press and make on the top shoe and move, upper and lower mould is opened, when workpiece is enough put in the space of opening of upper and lower mould, stop to move on the slide block.
The hole enlargement stage: marmem pipe base 7 is enclosed within on the elastic device of assembly in counterdie, the lower end of marmem pipe base 7 is contacted with the conical surface of counterdie, start forcing press then patrix is moved downward.When seaming chuck 8 with after marmem pipe base 7 contacts; Owing to the inhibition of marmem pipe base 7 stops to move; This moment is along with the continuation of patrix is descending; Seaming chuck 8 can be pushed down the upper end of rubber ring 5 and marmem pipe base 7 under the elastic force effect of 4 springs 3, is preventing can not press too deadly and the obstruction hole enlargement again when them from deforming vertically to pipe.Like this; Along with moving down of drift; Radially bulging just only can therewith take place thereby drive rubber ring 5 with rubber ring 5 contacted parts local radially bulging taking place in rubber bar 4, and this radial load can pass to the marmem pipe base 7 that is enclosed within rubber ring 5 outsides again; Make it that whole hole enlargement bulging take place, concrete hole enlargement size can be controlled through the ram travel of regulating forcing press.
The discharging stage: hole enlargement is opened upper and lower mould after finishing, and makes it get back to the preceding position of piece installing, and this moment, elastic device was removed the state the back can be got back to distortion again because of the elastic return effect before in external force, at this moment just can successfully the workpiece well that is shaped be taken out.
So just accomplished the hole enlargement process of a marmem pipe joint.
Claims (9)
1. based on the marmem pipe joint expander of elastic fluid, it is characterized in that: comprise backing plate, fixed head, seaming chuck, push-down head, spring, flexible rod, elastic ring, drift, seaming chuck is installed on the push-down head; Flexible rod one end is installed in the push-down head, and the flexible rod other end is installed in the seaming chuck, and elastic ring is enclosed within on the flexible rod; Fixed head links to each other with backing plate, and seaming chuck connects fixed head and backing plate, mounting spring on the bolt through bolt; One end of spring connects fixed head; The other end of spring connects push-down head, and an end of drift is installed in the fixed head, and the other end of drift is installed in the push-down head and with flexible rod and links to each other.
2. the marmem pipe joint expander based on elastic fluid according to claim 1 is characterized in that: have flange on the described backing plate, have flange on the push-down head.
3. the marmem pipe joint expander based on elastic fluid according to claim 1 and 2, it is characterized in that: described bolt has four, and four holes that are used for construction bolt are set on the backing plate.
4. the marmem pipe joint expander based on elastic fluid according to claim 1 and 2 is characterized in that: seaming chuck is the inclined-plane with the contact-making surface of the marmem that is used to process.
5. the marmem pipe joint expander based on elastic fluid according to claim 3 is characterized in that: seaming chuck is the inclined-plane with the contact-making surface of the marmem that is used to process.
6. the marmem pipe joint expander based on elastic fluid according to claim 1 and 2 is characterized in that: the outer shroud inwall of the stile of described push-down head and seaming chuck adopts and is slidingly matched.
7. the marmem pipe joint expander based on elastic fluid according to claim 3 is characterized in that: the outer shroud inwall of the stile of described push-down head and seaming chuck adopts and is slidingly matched.
8. the marmem pipe joint expander based on elastic fluid according to claim 4 is characterized in that: the outer shroud inwall of the stile of described push-down head and seaming chuck adopts and is slidingly matched.
9. the marmem pipe joint expander based on elastic fluid according to claim 5 is characterized in that: the outer shroud inwall of the stile of described push-down head and seaming chuck adopts and is slidingly matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204382098U CN202291094U (en) | 2011-11-08 | 2011-11-08 | Shape memory alloy pipe joint expanding device based on elastic medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204382098U CN202291094U (en) | 2011-11-08 | 2011-11-08 | Shape memory alloy pipe joint expanding device based on elastic medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202291094U true CN202291094U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204382098U Expired - Fee Related CN202291094U (en) | 2011-11-08 | 2011-11-08 | Shape memory alloy pipe joint expanding device based on elastic medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202291094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423784A (en) * | 2011-11-08 | 2012-04-25 | 哈尔滨工程大学 | Device and method for expanding diameter of shape memory alloy pipe joint based on elastic medium |
-
2011
- 2011-11-08 CN CN2011204382098U patent/CN202291094U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423784A (en) * | 2011-11-08 | 2012-04-25 | 哈尔滨工程大学 | Device and method for expanding diameter of shape memory alloy pipe joint based on elastic medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |