CN1177150C - Internal pressure connecting method of two individual pieces - Google Patents
Internal pressure connecting method of two individual piecesInfo
- Publication number
- CN1177150C CN1177150C CNB021331995A CN02133199A CN1177150C CN 1177150 C CN1177150 C CN 1177150C CN B021331995 A CNB021331995 A CN B021331995A CN 02133199 A CN02133199 A CN 02133199A CN 1177150 C CN1177150 C CN 1177150C
- Authority
- CN
- China
- Prior art keywords
- interconnecting piece
- girth
- outer connector
- cross
- section
- 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.)
- Expired - Fee Related
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- Insertion Pins And Rivets (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The present invention relates to an internal pressure connecting method for two pieces, particularly to a connecting method between two objects. The present invention enables the hole-shaped perimeter of a machined external connecting piece (1) is 1.01 to 1.1 times than that of the cross section of internal connecting pieces (2); the internal connecting pieces penetrate through holes of the external connecting piece; die sets (3) are respectively sheathed and fixed on the internal connecting pieces arranged on the left side and the right side of the external connecting piece; two ends of the internal connecting pieces are sealed; an internal pressure medium is introduced into the internal connecting pieces; the plasticity expansion of the internal connecting pieces between the two die sets occurs, the elasticity expansion of the external connecting piece in the corresponding position occurs, and the internal connecting pieces and the external connecting piece are connected to form a whole in an interference match mode after the pressure is released. The connecting method of the present invention reduces the work processes, avoids the defect that the strength of the connecting pieces is reduced because of hole drilling or groove forming, and solves the problems that two kings of material are difficult to weld and the reliability for adhesion is poor. The present invention has the advantages of low requirement for initial machining precision of the connecting pieces, long section capable of being connected, simplified technology and high efficiency.
Description
Technical field: the present invention relates to the connecting means between two articles.
Background technique: at present, the connecting means between two objects such as tube and tube, pipe and plate, Guan Yuhuan, ring and ring mainly contains welding process, bonding method and mechanical connection method.Wherein, that welding process has is yielding, have the heat affected zone, postwelding changes the material structure performance, be easy to produce the defective of weld crack, for the connection between the different materials part, owing to material melting point difference, freezing mechanism difference, the realization difficulty of its welding is very big simultaneously.And bonding method needs special binder, wants the precision machining mating face simultaneously, has increased technology difficulty, binder bad adaptability under different environment, so the poor reliability of bonding method simultaneously.The mechanical connection method mainly contains riveting, key connection and hot charge practice etc. at present.Riveting and key connection method need precision machining riveted holes and keyway, complex process, and need to destroy the link surface, influenced the using scope of link.The hot charging rule needs in advance the link engaging surface to be carried out precision machining, and needs operations such as heating, cooling, its complex process, and difficulty of processing is big, and the length of link can not be very big, also may cause the heating object surface oxidising.
Summary of the invention: the present invention is the interior pressure connecting means of two parts of development, and this method does not need fine finishing is carried out on the mating face of link, does not need be connected the surface Machining riveted holes or the keyway of part.Connecting means of the present invention is achieved in that at first will need the endoporus of the outer connector 1 that connects to process, make hole shape after the processing reach the shape and size of design, hole shape minimum perimeter polygon after outer connector 1 processing is 1.01～1.1 times of interconnecting piece 2 cross section appearance girths, again interconnecting piece 2 is penetrated in the hole of outer connector 1, two moulds 3 are fixed in respectively on the interconnecting piece 2 of the left and right sides of outer connector 1, sealed at both ends with interconnecting piece 2 then, in interconnecting piece 2, feed again and apply inner pressure medium, medium adopts highly pressurised liquid, gas or heat-resisting liquid macroimolecule material, the pressure of highly pressurised liquid is 100MPa～1000MPa, gas pressure is 10MPa～32MPa, the pressure of heat-resisting liquid macroimolecule material is 100MPa～300Mpa, and the size of pilot pressure, make interconnecting piece 2 that section corresponding between two moulds 3 that plastic expansion take place with outer connector 1, the outer connector 1 of its corresponding part is also by bulging generation elastic expansion, the swell increment of the outer surface girth of interconnecting piece 2 cross sections is 0.15%～0.2% of outer connector 1 an endoporus girth, the interior pressure of interconnecting piece 2 is laid down, the outer perimeter of interconnecting piece 2 cross sections is greater than the original perimeter of outer connector 1 endoporus, make outer connector 1 can not be retracted to original state fully, keep certain elastic deformation amount δ e, so just formed the tight connection between two objects.The present invention makes outer connector 1 that elastic expansion take place by exerting pressure in interconnecting piece 2, makes the joint of interconnecting piece 2 that plastic expansion take place, thereby realizes that after release the two interference fit connects into integral body.The material of outer connector 1 can adopt various materials to make, as steel, cast iron, powdered metallurgical material, titanium and alloy thereof, aluminium and alloy thereof, copper and alloy thereof etc.; Outer connector 1 can adopt multiple processing method to obtain, as forging, casting, punching press, powder metallurgy, compacting sintering etc.The material of interconnecting piece 2 can adopt various materials, as steel, titanium, aluminium, copper etc.The profile of outer connector 1 can be circle, polygonal and any enclosed curvilinerar figure etc.; Outer connector 1 can be circular hole, polygonal hole etc. with the joint of interconnecting piece 2.Use connecting means of the present invention, fine finishing need not carried out in mating face between two links, do not need surface Machining riveted holes or keyway at connected piece, reduced manufacturing procedure, also avoided making the defective of link strength reduction, solved that two kinds of unlike materials are difficult to weld and the problem of bonding poor reliability because of boring or fluting.Need not heat for plain carbon steel, the part of making for the very high titanium of yield strength and alloy thereof connects difficulty for reducing, employing is heated to after-applied interior pressure of certain temperature, can obtain reliable connection, it has the foreign material of being suitable for connection, and is low to the initial manufacture required precision of link, can connect the segment length, and work simplification, flexible high, the advantage that efficient is high.
Description of drawings: Fig. 1 is the original state figure before outer connector 1 does not pressurize with interconnecting piece 2, the phase diagram when Fig. 2 is outer connector 1 and interconnecting piece 2 pressurizations, and Fig. 3 is the coupled condition figure after outer connector 1 and interconnecting piece 2 releases.
Embodiment one: present embodiment is: at first will need the endoporus of the outer connector 1 that connects to process, make hole shape after the processing reach the shape and size of design, hole shape minimum perimeter polygon after outer connector 1 processing is 1.01～1.03 times of interconnecting piece 2 cross section appearance girths, again interconnecting piece 2 is penetrated in the hole of outer connector 1, two moulds 3 are fixed in respectively on the interconnecting piece 2 of the left and right sides of outer connector 1, sealed at both ends with interconnecting piece 2 then, in interconnecting piece 2, feed the gas of pressing in applying again, gas pressure is 10MPa～21MPa, and the size of pilot pressure, make interconnecting piece 2 that section corresponding between two moulds 3 that plastic expansion take place with outer connector 1, the outer connector 1 of its corresponding part is also by bulging generation elastic expansion, the swell increment of the outer surface girth of interconnecting piece 2 cross sections is 0.15%～0.16% of outer connector 1 an endoporus girth, pressure in the interconnecting piece 2 are laid down, so just formed the tight connection between two objects.
Embodiment two: what present embodiment and embodiment one were different is that the hole shape minimum perimeter polygon after outer connector 1 processing is 1.04～1.07 times of interconnecting piece 2 cross section appearance girths.The inner pressure medium that applies is a gas, and gas pressure is 22MPa～32MPa, and the swell increment of the outer surface girth of interconnecting piece 2 cross sections is 0.17%～0.18% of outer connector 1 an endoporus girth.
Embodiment three: what present embodiment and embodiment one, two were different is that the hole shape minimum perimeter polygon after outer connector 1 processing is 1.08～1.1 times of interconnecting piece 2 cross section appearance girths.The medium of pressing in applying is a highly pressurised liquid water mixed oil, and fluid pressure is 800MPa～1000MPa, and the swell increment of the outer surface girth of interconnecting piece 2 cross sections is 0.19%～0.2% of outer connector 1 an endoporus girth.
Embodiment four: the interconnecting piece 2 in the present embodiment is titanium and alloy thereof, need heat when in applying, pressing, be incubated being heated under 200 ℃～400 ℃ states, applying inner pressure medium is heat-resisting liquid macroimolecule material, pressure is 100MPa～300MPa, hole shape minimum perimeter polygon after outer connector 1 processing is 1.04～1.07 times of interconnecting piece 2 cross section outer surface girths, and the swell increment of the outer surface girth of the cross section of interconnecting piece 2 is 0.18%～0.2% of outer connector 1 an endoporus girth.
Claims (5)
1, the interior pressure connecting means of two parts, at first will need to it is characterized in that the endoporus of the outer connector (1) that connects to process, make hole shape after the processing reach the shape and size of design, hole shape minimum perimeter polygon after outer connector (1) processing is 1.01～1.1 times of interconnecting piece (2) cross section appearance girth, again interconnecting piece (2) is penetrated in the hole of outer connector (1), two moulds (3) are fixed in respectively on the interconnecting piece (2) of the left and right sides of outer connector (1), sealed at both ends with interconnecting piece (2) then, in interconnecting piece (2), feed again and apply inner pressure medium, medium adopts highly pressurised liquid, gas or heat-resisting liquid macroimolecule material, the pressure of highly pressurised liquid is 100MPa～1000MPa, gas pressure is 10MPa～32MPa, the pressure of heat-resisting liquid macroimolecule material is 100MPa～300Mpa, and the size of pilot pressure, make interconnecting piece (2) that section corresponding between two moulds (3) that plastic expansion take place with outer connector 1, the outer connector of its corresponding part (1) is also by bulging generation elastic expansion, the swell increment of the outer surface girth of interconnecting piece (2) cross section is 0.15%～0.2% of outer connector (a 1) endoporus girth, the interior pressure of interconnecting piece (2) laid down, so just formed the tight connection between two objects.
2, the interior pressure connecting means of two parts according to claim 1, it is characterized in that hole shape minimum perimeter polygon after outer connector (1) processing is 1.01～1.03 times of interconnecting piece (2) cross section appearance girth, the inner pressure medium that applies is a gas, gas pressure is 10MPa～21MPa, and the swell increment of the outer surface girth of interconnecting piece (2) cross section is 0.15%～0.16% of outer connector (a 1) endoporus girth.
3, the interior pressure connecting means of two parts according to claim 1, it is characterized in that hole shape minimum perimeter polygon after outer connector (1) processing is 1.04～1.07 times of interconnecting piece (2) cross section appearance girth, the inner pressure medium that applies is a gas, gas pressure is 22MPa～32MPa, and the swell increment of the outer surface girth of interconnecting piece (2) cross section is 0.17%～0.18% of outer connector (a 1) endoporus girth.
4, the interior pressure connecting means of two parts according to claim 1, it is characterized in that hole shape minimum perimeter polygon after outer connector (1) processing is 1.08～1.1 times of interconnecting piece (2) cross section appearance girth, the inner pressure medium that applies is a highly pressurised liquid water mixed oil, fluid pressure is 800MPa～1000MPa, and the swell increment of the outer surface girth of interconnecting piece (2) cross section is 0.19%～0.2% of outer connector (a 1) endoporus girth.
5, the interior pressure connecting means of two parts according to claim 1, it is characterized in that interconnecting piece (2) is titanium and alloy thereof, need heat when in applying, pressing, be incubated being heated under 200 ℃～400 ℃ states, applying inner pressure medium is heat-resisting liquid macroimolecule material, hole shape minimum perimeter polygon after outer connector (1) processing is 1.04～1.07 times of interconnecting piece (2) cross section outer surface girth, and the swell increment of the outer surface girth of the cross section of interconnecting piece (2) is 0.18%～0.2% of outer connector (a 1) endoporus girth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021331995A CN1177150C (en) | 2002-10-14 | 2002-10-14 | Internal pressure connecting method of two individual pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021331995A CN1177150C (en) | 2002-10-14 | 2002-10-14 | Internal pressure connecting method of two individual pieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1414252A CN1414252A (en) | 2003-04-30 |
| CN1177150C true CN1177150C (en) | 2004-11-24 |
Family
ID=4747091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021331995A Expired - Fee Related CN1177150C (en) | 2002-10-14 | 2002-10-14 | Internal pressure connecting method of two individual pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1177150C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375661C (en) * | 2003-09-26 | 2008-03-19 | 哈尔滨工业大学 | Internal compression assembling machine |
| CN102672414A (en) * | 2012-06-05 | 2012-09-19 | 中国南方航空工业(集团)有限公司 | Method for combining cylinder head and cylinder barrel |
| CN104227321A (en) * | 2014-07-18 | 2014-12-24 | 四川银钢一通凸轮科技股份有限公司 | Tensioning tool, assembling equipment and camshaft assembling method |
-
2002
- 2002-10-14 CN CNB021331995A patent/CN1177150C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1414252A (en) | 2003-04-30 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041124 Termination date: 20101014 |