CN102886406A - Soft mandrel for forming conduit - Google Patents
Soft mandrel for forming conduit Download PDFInfo
- Publication number
- CN102886406A CN102886406A CN2012103852220A CN201210385222A CN102886406A CN 102886406 A CN102886406 A CN 102886406A CN 2012103852220 A CN2012103852220 A CN 2012103852220A CN 201210385222 A CN201210385222 A CN 201210385222A CN 102886406 A CN102886406 A CN 102886406A
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- sleeve
- screw
- conical screw
- expansion set
- screw rod
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- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention relates to a soft mandrel for forming a conduit, which is characterized by comprising a sleeve, an expanded sleeve, a tapered screw rod, a screw shell, a screw and a gasket, wherein the sleeve is sheathed outside the expanded sleeve; the tapper screw rod is arranged in the expanded sleeve; the screw passes through the gasket and is arranged at one end of the tapered screw rod; the screw shell is arranged at one end of the tapered screw rod in a threaded connection manner; an outer cone structure with conical degree is arranged at the other end of the tapered screw rod; and the outer cone has an taper angle of 6-10 degrees. The soft mandrel has the advantages that the working procedure of filling rosin and sand are omitted in the conduit manufacturing technology, so that the problems that a rosin filling device is backward, sand filling completely depends on manpower and is influenced by individual differences, the degree of tightness of sand filling is not stable, and the like can be solved; and the production efficiency is greatly improved, the cost is reduced, and the production period is shortened.
Description
Technical field
The present invention relates to the inner wall supporting device field of tube bending forming, particularly the soft plug of a kind of duct forming.
Background technology
Tube bending processing is the basic working procedure that conduit is made.Aero-engine upper conduit quantity is a lot, different, most conduits are curvature of space, adopt in the CNC tube bending machine BENDING PROCESS, as easy as rolling off a logly the outer wall attenuation occurs even break, the phenomenons such as inwall thickening even wrinkling and cross section are oval, for avoiding occurring the problems referred to above, the filler of often packing into before the bend pipe is to improve interior support.
Because aviation only guarantees conduit external diameter and thickness of pipe wall size with domestic tubing, not tight to the guide pipe inner hole dimensional requirement, numerical-control bending does not mate with plug and domestic tubing, can only fill with by inner chamber the traditional handicrafts such as rosin, back-up sand, to satisfy Large Diameter Pipeline stainless steel pipe normal temperature numerical-control bending batch production requirements, fall behind yet fill with rosin equipment, back-up sand relies on manually fully, affected by individual differences, the tightness that adds sand is unstable, thereby affects the guiding-tube bend quality.
Summary of the invention
The objective of the invention is to change conventional tube forming technologies such as filling with rosin, back-up sand in order to improve aeroengine pipeline bending quality and efficient, the spy provides a kind of duct forming soft plug.
The invention provides the soft plug of a kind of duct forming, it is characterized in that: the soft plug of described duct forming comprises sleeve 1, expansion set 2, conical screw 3, swivel nut 4, screw 5, packing ring 6;
Wherein: sleeve 1 is enclosed within the outside of expansion set 2, conical screw 3 is installed in expansion set 2 inside, screw 5 passes the end that packing ring 6 is installed in conical screw 3, swivel nut 4 is threaded connection an end that is installed in conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and the Outer Taper cone angle is 6 ~ 10 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less 0.2～0.3 millimeter than catheter diameter actual size, during work, turn swivel nut 4, drive conical screw 3 and move to the left the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 cooperates with it.
The material of described sleeve 1 is engineering plastics, is specially the polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 ends are with interior wimble structure, and the angle a of interior wimble structure is between 6 ~ 10 °.
Duct forming is inner wall supporting device for tube bending forming with soft plug, in the guiding-tube bend process, is used for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.The endoporus tolerance is larger, is the elimination gap, plug employing cone centering expanding structure, and by the outer field plastic sleeve of motion swelling plug of cone screw rod, thereby warp in the swelling conduit is eliminated the radial clearance between the interior warp of plug and pipe.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts the T8A material, stage-hardening, and L1 section hardness is high, and L2 section hardness is low, and its left end screw thread is connected with sleeve 1, right-hand member d1 section part and sleeve 1 matched in clearance, diameter is that the part of d section is slidingly matched with conical screw 3, h is of a size of 1.5～3 millimeters.
Advantage of the present invention:
The soft plug of duct forming of the present invention, filling rosin, sand filling process in the conduit manufacturing process have been cancelled, having solved filling rosin equipment falls behind, back-up sand relies on manually fully, affected by individual differences, the unstable unsafe factor that waits of the tightness of back-up sand has improved production efficiency greatly, reduce cost, shortened the production cycle.
Description of drawings
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
Fig. 1 is duct forming with soft mandrel structure schematic diagram;
Fig. 2 is the expansion set structural representation.
The specific embodiment
Embodiment 1
Present embodiment provides a kind of duct forming soft plug, it is characterized in that: the soft plug of described duct forming comprises sleeve 1, expansion set 2, conical screw 3, swivel nut 4, screw 5, packing ring 6;
Wherein: sleeve 1 is enclosed within the outside of expansion set 2, conical screw 3 is installed in expansion set 2 inside, screw 5 passes the end that packing ring 6 is installed in conical screw 3, swivel nut 4 is threaded connection an end that is installed in conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and the Outer Taper cone angle is 6 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less 0.2～0.3 millimeter than catheter diameter actual size, during work, turn swivel nut 4, drive conical screw 3 and move to the left the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 cooperates with it.
The material of described sleeve 1 is engineering plastics, is specially the polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 ends are with interior wimble structure, and the angle a of interior wimble structure is at 6 °.
Duct forming is inner wall supporting device for tube bending forming with soft plug, in the guiding-tube bend process, is used for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.The endoporus tolerance is larger, is the elimination gap, plug employing cone centering expanding structure, and by the outer field plastic sleeve of motion swelling plug of cone screw rod, thereby warp in the swelling conduit is eliminated the radial clearance between the interior warp of plug and pipe.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts the T8A material, stage-hardening, and L1 section hardness is high, and L2 section hardness is low, and its left end screw thread is connected with sleeve 1, right-hand member d1 section part and sleeve 1 matched in clearance, diameter is that the part of d section is slidingly matched with conical screw 3, h is of a size of 1.5 millimeters.
Present embodiment provides a kind of duct forming soft plug, it is characterized in that: the soft plug of described duct forming comprises sleeve 1, expansion set 2, conical screw 3, swivel nut 4, screw 5, packing ring 6;
Wherein: sleeve 1 is enclosed within the outside of expansion set 2, conical screw 3 is installed in expansion set 2 inside, screw 5 passes the end that packing ring 6 is installed in conical screw 3, swivel nut 4 is threaded connection an end that is installed in conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and the Outer Taper cone angle is 8 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less 0.2～0.3 millimeter than catheter diameter actual size, during work, turn swivel nut 4, drive conical screw 3 and move to the left the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 cooperates with it.
The material of described sleeve 1 is engineering plastics, is specially the polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 ends are with interior wimble structure, and the angle a of interior wimble structure is at 8 °.
Duct forming is inner wall supporting device for tube bending forming with soft plug, in the guiding-tube bend process, is used for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.The endoporus tolerance is larger, is the elimination gap, plug employing cone centering expanding structure, and by the outer field plastic sleeve of motion swelling plug of cone screw rod, thereby warp in the swelling conduit is eliminated the radial clearance between the interior warp of plug and pipe.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts the T8A material, stage-hardening, and L1 section hardness is high, and L2 section hardness is low, and its left end screw thread is connected with sleeve 1, right-hand member d1 section part and sleeve 1 matched in clearance, diameter is that the part of d section is slidingly matched with conical screw 3, h is of a size of 2 millimeters.
Present embodiment provides a kind of duct forming soft plug, it is characterized in that: the soft plug of described duct forming comprises sleeve 1, expansion set 2, conical screw 3, swivel nut 4, screw 5, packing ring 6;
Wherein: sleeve 1 is enclosed within the outside of expansion set 2, conical screw 3 is installed in expansion set 2 inside, screw 5 passes the end that packing ring 6 is installed in conical screw 3, swivel nut 4 is threaded connection an end that is installed in conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and the Outer Taper cone angle is 10 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less 0.2～0.3 millimeter than catheter diameter actual size, during work, turn swivel nut 4, drive conical screw 3 and move to the left the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 cooperates with it.
The material of described sleeve 1 is engineering plastics, is specially the polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 ends are with interior wimble structure, and the angle a of interior wimble structure is at 10 °.
Duct forming is inner wall supporting device for tube bending forming with soft plug, in the guiding-tube bend process, is used for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.The endoporus tolerance is larger, is the elimination gap, plug employing cone centering expanding structure, and by the outer field plastic sleeve of motion swelling plug of cone screw rod, thereby warp in the swelling conduit is eliminated the radial clearance between the interior warp of plug and pipe.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts the T8A material, stage-hardening, and L1 section hardness is high, and L2 section hardness is low, and its left end screw thread is connected with sleeve 1, right-hand member d1 section part and sleeve 1 matched in clearance, diameter is that the part of d section is slidingly matched with conical screw 3, h is of a size of 3 millimeters.
Claims (4)
1. soft plug of duct forming, it is characterized in that: the soft plug of described duct forming comprises sleeve (1), expansion set (2), conical screw (3), swivel nut (4), screw (5), packing ring (6);
Wherein: sleeve (1) is enclosed within the outside of expansion set (2), conical screw (3) is installed in expansion set (2) inside, screw (5) passes the end that packing ring (6) is installed in conical screw (3), swivel nut (4) is threaded connection an end that is installed in conical screw (3), the other end of conical screw (3) is the Outer Taper structure with tapering, and the Outer Taper cone angle is 6 ~ 10 °.
2. according to the soft plug of duct forming claimed in claim 1, it is characterized in that: the material of described sleeve (1) is engineering plastics, is specially the polyetheretherketonematerials materials part.
3. according to the soft plug of duct forming claimed in claim 1, it is characterized in that: described conical screw (3) is 45# steel materials and parts.
4. according to the soft plug of duct forming claimed in claim 1, it is characterized in that: described expansion set (2) is terminal with interior wimble structure, and the angle a of interior wimble structure is between 6 ~ 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385222.0A CN102886406B (en) | 2012-10-09 | 2012-10-09 | Soft mandrel for forming conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385222.0A CN102886406B (en) | 2012-10-09 | 2012-10-09 | Soft mandrel for forming conduit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102886406A true CN102886406A (en) | 2013-01-23 |
| CN102886406B CN102886406B (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210385222.0A Expired - Fee Related CN102886406B (en) | 2012-10-09 | 2012-10-09 | Soft mandrel for forming conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102886406B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096428U (en) * | 1991-07-05 | 1992-02-19 | 李采云 | Core stick for soft elbow with expansion diameter |
| JP2701009B2 (en) * | 1995-01-30 | 1998-01-21 | 藤壷技研工業株式会社 | Bending tube straightening method and straightening connector connecting method |
| JPH11159687A (en) * | 1997-11-28 | 1999-06-15 | Showa Alum Corp | Sealing structure preventing deformation due to use of gas pressure in workpiece bending process and bending method |
| CN2467219Y (en) * | 2000-12-15 | 2001-12-26 | 沈小蛇 | Antiflat and anti shrunken device for steel pipe bending processing |
| US20030154756A1 (en) * | 2000-04-27 | 2003-08-21 | Thomas Flehmig | Bending device for thin-walled metal pipes |
| CN101367099A (en) * | 2007-08-14 | 2009-02-18 | 西北工业大学 | Flexible bend pipe core mould |
| CN201231287Y (en) * | 2008-05-27 | 2009-05-06 | 西安飞机工业（集团）有限责任公司 | Split type conduit supporting plug |
| EP2035210B1 (en) * | 2006-05-04 | 2009-11-11 | Caldervale Technology Limited | Device for preparing pipe ends for jointing |
| CN201436097U (en) * | 2009-07-02 | 2010-04-07 | 广东美的电器股份有限公司 | Spindle for bend pipe formation of metal pipe |
| CN201603786U (en) * | 2010-01-20 | 2010-10-13 | 上海华钢不锈钢有限公司 | Lining core rod made of plastic material for U-shaped bent pipe |
| CN202079160U (en) * | 2010-02-08 | 2011-12-21 | 株式会社东京发条制作所 | Spring guide locator |
| CN102699163A (en) * | 2012-05-29 | 2012-10-03 | 无锡金羊管件有限公司 | Pipe bending process adopting internal supporting method and special internal supporting bag |
| CN202910130U (en) * | 2012-10-09 | 2013-05-01 | 沈阳黎明航空发动机(集团)有限责任公司 | Soft mandril for guide pipe forming |
-
2012
- 2012-10-09 CN CN201210385222.0A patent/CN102886406B/en not_active Expired - Fee Related
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096428U (en) * | 1991-07-05 | 1992-02-19 | 李采云 | Core stick for soft elbow with expansion diameter |
| JP2701009B2 (en) * | 1995-01-30 | 1998-01-21 | 藤壷技研工業株式会社 | Bending tube straightening method and straightening connector connecting method |
| JPH11159687A (en) * | 1997-11-28 | 1999-06-15 | Showa Alum Corp | Sealing structure preventing deformation due to use of gas pressure in workpiece bending process and bending method |
| US20030154756A1 (en) * | 2000-04-27 | 2003-08-21 | Thomas Flehmig | Bending device for thin-walled metal pipes |
| CN2467219Y (en) * | 2000-12-15 | 2001-12-26 | 沈小蛇 | Antiflat and anti shrunken device for steel pipe bending processing |
| EP2035210B1 (en) * | 2006-05-04 | 2009-11-11 | Caldervale Technology Limited | Device for preparing pipe ends for jointing |
| CN101367099A (en) * | 2007-08-14 | 2009-02-18 | 西北工业大学 | Flexible bend pipe core mould |
| CN201231287Y (en) * | 2008-05-27 | 2009-05-06 | 西安飞机工业（集团）有限责任公司 | Split type conduit supporting plug |
| CN201436097U (en) * | 2009-07-02 | 2010-04-07 | 广东美的电器股份有限公司 | Spindle for bend pipe formation of metal pipe |
| CN201603786U (en) * | 2010-01-20 | 2010-10-13 | 上海华钢不锈钢有限公司 | Lining core rod made of plastic material for U-shaped bent pipe |
| CN202079160U (en) * | 2010-02-08 | 2011-12-21 | 株式会社东京发条制作所 | Spring guide locator |
| CN102699163A (en) * | 2012-05-29 | 2012-10-03 | 无锡金羊管件有限公司 | Pipe bending process adopting internal supporting method and special internal supporting bag |
| CN202910130U (en) * | 2012-10-09 | 2013-05-01 | 沈阳黎明航空发动机(集团)有限责任公司 | Soft mandril for guide pipe forming |
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| Publication number | Publication date |
|---|---|
| CN102886406B (en) | 2015-06-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20150610 Termination date: 20171009 |