CN1094393C - Small radius bending method of metal pipe and positioner processing method - Google Patents
Small radius bending method of metal pipe and positioner processing method Download PDFInfo
- Publication number
- CN1094393C CN1094393C CN99115757A CN99115757A CN1094393C CN 1094393 C CN1094393 C CN 1094393C CN 99115757 A CN99115757 A CN 99115757A CN 99115757 A CN99115757 A CN 99115757A CN 1094393 C CN1094393 C CN 1094393C
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- China
- Prior art keywords
- pipe
- metal
- bent
- bending
- metal tube
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- Expired - Fee Related
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 61
- 239000002184 metal Substances 0.000 title claims abstract description 61
- 238000005452 bending Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000003672 processing method Methods 0.000 title claims description 6
- 239000010936 titanium Substances 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- -1 titanium aluminium compound Chemical class 0.000 description 1
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention relates to a technological method for bending a metal pipe in a small bend radius, and a method for manufacturing a positioner for fixing the position of a contact wire in an electrified railway with the utilization of the technological method. The method for bending the metal pipe has the key point that a metal pipe is sheathed with the exterior of the bent part of the metal pipe to be bent, or a metal pipe and/or a metal core rod are/is inserted in the bent part of the metal pipe to be bent, and then the metal is pressed on the existing pipe bending device to be bent to a required angle. The method for manufacturing the positioner by using the method for bending the metal pipe comprises the steps that a titanium pipe is bent to a required angle directly on the pipe bending device by roasting after a titanium-aluminum composite bar is inserted into one end of the titanium pipe; then, a positioning hook is connected with one end of the titanium pipe, and a positioning sleeve is formed by perforating on the bent end. Because the positioner is formed in one time, the mechanical strength and the anticorrosion property of the product are enhanced.
Description
The present invention relates to a kind of metal tube bending process, particularly metal tube is bent to and have than the method for small-bend radius and utilize the method to make in the electric railway the fixedly method of the locator of contact wire position.
In general, the minimum bending radius of metal pipe material bending must not can produce serious ellipse or cracking otherwise be bent the position less than 2D.Bent tube technique all will tamp with fillers such as sands in the metal tube earlier at present, on bending machine, pipe bender or other swan neck system pipe is desired crooked position then and implements cold or hot simmering and bending processing, should make than the bend pipe of macrobending radius but can only make.Be used for deciding the locator of contact wire position in the electric railway, about 102 ° of its angle of bend, radius of curvature R is 0.2D～1.5D, can produce serious ellipse when adopting existing bent tube technique factory crooked and also ftracture, and can't once produce and give the phase product.So, be location hook, positioning pipe, abutment sleeve three parts are made respectively and then to be adopted the method for mechanical pressing to combine when producing locator at present, complex process, and the bulk strength of member and security, reliability is relatively poor.
The present invention seeks at the prior art weak point, aim to provide a kind of metal tube small radius bending technology and utilize this technology to make the method for one-time formed locator.
Technical solution of the present invention: a kind of small radius bending method of metal pipe, earlier be bent position overcoat one metal jacket pipe (2) or be bent and wear a thick-wall metal pipes (3) and/or metal mandrel (4) in the pipe of position being bent metal tube (1), will fill sand in the metal tube then or not fill sand simmering and bending on swan neck system and be shaped.
Be bent added metal tube in position (2,3) and metal mandrel (4) being bent metal tube (1), its size should be bent the metal tube gap and keep as far as possible little gap, and have than small intensity or near the intensity that is bent pipe.
The integrated positioner processing method that is used for fixing the contact wire position in a kind of electric railway, insert one section thick-wall metal pipes (3) at metal tube one end as positioning pipe, inserting one section composition metal plug (4) back in thick-walled metal (3) pipe is shaped this section simmering and bending on swan neck system, form abutment sleeve in crooked end punching then, the other end connects location hook.
Positioning pipe is the titanium pipe, and the thick-wall metal pipes that inserts in the positioning pipe is also selected the titanium pipe for use, and the metal mandrel that inserts in the thick-walled metal titanium pipe is an aluminium bar.Also can directly adopt titanium aluminum composite metal rod as plug.
Bending method among the present invention is very simple, need not to change existing angle pipe equipment again, can metal tube is curved to radius of curvature R＜3D～0.5Dmm, and angle of bend can be to 45 °～180 °, and oval angle is minimum in control, and unlikely institute processing metal pipe cracking.Utilize the positioner processing method of aforementioned bending method, manufacture simplification, and equipment required to reduce greatly, and also the locator that processes is owing to be one-shot forming, intensity improves, and security, reliability significantly strengthens.
Description of drawings:
Fig. 1 is a shape before the outer tube bending.
Fig. 2 is a shape after the outer tube bending.
Fig. 3 is the crooked preceding shape of interpolation plug or pipe.
Fig. 4 is the crooked back shape of interpolation plug or pipe.
Fig. 5 is the locator schematic diagram that utilizes processes of the present invention.
Embodiment 1: the outer tube bending method.Be bent metal tube 1 desire crooked position overlap an external diameter with by the very approaching thick-walled metal sleeve pipe 2 of bend pipe internal diameter, filling sand in pipe then, two ends block after the tamping, bend required angle with pipe bender again, outwell sand and get final product.
Embodiment 2: the interpolation pipe bending method.Basic skills is with embodiment 1, and just sleeve pipe inserts and instructed in the bend pipe, and still need filling behind the sand again, simmering and bending are shaped.
Implement 3: interpolation plug bending method.Desire crooked position and insert a metal mandrel being bent metal tube 1, i.e. direct bend pipe on bending machine then, the method be adapted to need not conducting by bend pipe occasion.
Embodiment 4: the bending method of interpolation plug and pipe.Before inserting metal mandrel, earlier a smaller metal tube is inserted to be bent in the pipe or to be enclosed within to insert in the lump on the plug and is bent metal tube, after directly on bending machine, bend again to required angle and get final product.
Embodiment 5: integrated locator preparation method.Choose the Titanium pipe and make the positioning pipe of locator, the titanium aluminium compound bar of compound one deck titanium pipe is made plug insert one section in any end outside, being depressed into bending radius then on pipe bender is 0.8D, angle of bend to 102 °, location hook on curved end not connects at last, the curved end punching forms abutment sleeve and gets final product.Through this technology made locator, the sweep ellipse is 1: 1.1.Process stabilizing can not ftracture during bend pipe, and member detects and reaches form and position tolerance, and mechanical property improves greatly than the crimping formed product.
Claims (4)
1, a kind of small radius bending method of metal pipe, it is characterized in that earlier being bent position overcoat one metal jacket pipe (2) or being bent and wear a thick-wall metal pipes (3) and/or metal mandrel (4) in the pipe of position being bent metal tube (1), will fill sand in the metal tube then or not fill sand simmering and bending on swan neck system and be shaped.
2, according to the described metal tube small-bend radius of claim 1 bending method, it is characterized in that being bent added metal tube in position (2,3) and metal mandrel (4) being bent metal tube (1), its size should be bent the metal tube gap and keep as far as possible little gap, and have than small intensity or near the intensity that is bent pipe.
3, the integrated positioner processing method that is used for fixing the contact wire position in a kind of electric railway, it is characterized in that inserting one section thick-wall metal pipes (3) at metal tube one end as positioning pipe, inserting one section composition metal plug (4) back in thick-walled metal (3) pipe is shaped this section simmering and bending on swan neck system, form abutment sleeve in crooked end punching then, the other end connects location hook.
4, according to the described positioner processing method of claim 3, it is characterized in that positioning pipe is the titanium pipe, the thick-wall metal pipes that inserts in the positioning pipe is also selected the titanium pipe for use, and the metal mandrel that inserts in the thick-walled metal titanium pipe is an aluminium bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115757A CN1094393C (en) | 1999-04-15 | 1999-04-15 | Small radius bending method of metal pipe and positioner processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115757A CN1094393C (en) | 1999-04-15 | 1999-04-15 | Small radius bending method of metal pipe and positioner processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1270858A CN1270858A (en) | 2000-10-25 |
| CN1094393C true CN1094393C (en) | 2002-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99115757A Expired - Fee Related CN1094393C (en) | 1999-04-15 | 1999-04-15 | Small radius bending method of metal pipe and positioner processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1094393C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411765C (en) * | 2006-04-29 | 2008-08-20 | 渤海船舶重工有限责任公司 | A method of bending a copper tube |
| CN104315910A (en) * | 2014-09-27 | 2015-01-28 | 山东格瑞德集团有限公司 | Manufacturing process of U-shaped bent pipe of copper pipe heat exchanger |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284575B (en) * | 2011-07-06 | 2014-02-12 | 北京航空航天大学 | A push-bending forming device and forming method for internal high-pressure rubber bag pipe fittings |
| CN103433341A (en) * | 2013-08-19 | 2013-12-11 | 天津东义镁制品股份有限公司 | Magnesium alloy extruded tube and method for brake forming of magnesium alloy extruded tube |
| CN105290177A (en) * | 2014-06-16 | 2016-02-03 | 李诤 | Hot bending forming technology of large-caliber thick-walled pipe filled with sand cores through heat in supplementing manner |
| CN104550370B (en) * | 2015-02-04 | 2017-01-04 | 天津重型装备工程研究有限公司 | The manufacturing process of the macrobending angle small-bend radius of thick-wall and large-diameter pipeline |
| CN114871312B (en) * | 2022-04-25 | 2023-07-07 | 南京航空航天大学 | A Bending Method of Heterogeneous Bimetallic Composite Pipe Based on Bending Robot |
| CN115228994B (en) * | 2022-09-20 | 2022-12-13 | 苏州律动游乐设备有限公司 | Method for processing metal elbow connector |
| CN116798696B (en) * | 2023-03-31 | 2024-03-19 | 合肥科烨电物理设备制造有限公司 | Method for solving wrinkles generated on small-radius bending inner side of thin-wall mineral insulated conductor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088140A (en) * | 1992-10-12 | 1994-06-22 | 本田技研工业株式会社 | Bending method of metal pipe |
| CN2215362Y (en) * | 1994-03-25 | 1995-12-20 | 中国第一汽车集团公司车身装备厂 | Metal pipe bender |
-
1999
- 1999-04-15 CN CN99115757A patent/CN1094393C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088140A (en) * | 1992-10-12 | 1994-06-22 | 本田技研工业株式会社 | Bending method of metal pipe |
| CN2215362Y (en) * | 1994-03-25 | 1995-12-20 | 中国第一汽车集团公司车身装备厂 | Metal pipe bender |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411765C (en) * | 2006-04-29 | 2008-08-20 | 渤海船舶重工有限责任公司 | A method of bending a copper tube |
| CN104315910A (en) * | 2014-09-27 | 2015-01-28 | 山东格瑞德集团有限公司 | Manufacturing process of U-shaped bent pipe of copper pipe heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270858A (en) | 2000-10-25 |
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