CN102886406B - Soft mandrel for forming conduit - Google Patents
Soft mandrel for forming conduit Download PDFInfo
- Publication number
- CN102886406B CN102886406B CN201210385222.0A CN201210385222A CN102886406B CN 102886406 B CN102886406 B CN 102886406B CN 201210385222 A CN201210385222 A CN 201210385222A CN 102886406 B CN102886406 B CN 102886406B
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- Prior art keywords
- sleeve
- screw
- conical screw
- expansion set
- screw rod
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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 a kind of duct forming soft plug.
Background technology
Tube bending processing is the basic working procedure that conduit manufactures.Aero-engine upper conduit quantity is a lot, different, most conduit is curvature of space, adopt in CNC tube bending machine BENDING PROCESS, as easy as rolling off a logly occur that outer wall is thinning and even break, the phenomenons such as the thickening even wrinkling and cross section of inwall is oval, for avoiding occurring the problems referred to above, before bend pipe, the normal filler that loads is to improve interior support.
Because the domestic tubing of aviation only ensures catheter outer diameter and thickness of pipe wall size, not tight to guide pipe inner hole dimensional requirement, numerical-control bending plug does not mate with domestic tubing, can only fill with the traditional handicraft such as rosin, back-up sand by inner chamber, to meet Large Diameter Pipeline stainless steel pipe normal temperature numerical-control bending batch production requirements, but filling rosin equipment falls behind, back-up sand relies on manually completely, affect by individual differences, the tightness adding sand is unstable, thus affects guiding-tube bend quality.
Summary of the invention
The object of the invention is to improve aeroengine pipeline bending quality and efficiency, change and fill with the conventional tube such as rosin, back-up sand forming technology, spy provides the soft plug of a kind of duct forming.
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, it is inner that conical screw 3 is arranged on expansion set 2, screw 5 is arranged on one end of conical screw 3 through packing ring 6, swivel nut 4 is threaded connection the one end being arranged on conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and Outer Taper cone angle is 6 ~ 10 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less than catheter diameter actual size 0.2 ~ 0.3 millimeter, during work, turn swivel nut 4, drive conical screw 3 to move to the left, the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 coordinates with it.
The material of described sleeve 1 is engineering plastics, is specially polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 end is with inner cone structure, and the angle a of interior wimble structure is between 6 ~ 10 °.
Duct forming is the inner wall supporting device for tube bending forming with soft plug, in guiding-tube bend process, for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.Bearing tolerances is comparatively large, and for eliminating gap, plug adopts cone centering expanding structure, by the outer field plastic sleeve of motion swelling plug of cone screw rod, thus swelling catheter diameter, eliminate the radial clearance between plug and ips.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts 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, and diameter is that the part of d section is slidably matched with conical screw 3, and 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, eliminate filling rosin, the sand filling process in conduit manufacturing process, solve filling rosin equipment to fall behind, back-up sand relies on manually completely, affect by individual differences, the tightness instability of back-up sand waits unsafe factor, substantially increases production efficiency, reduce cost, shorten the production cycle.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the soft mandrel structure schematic diagram of duct forming;
Fig. 2 is expansion set structural representation.
Detailed description of the invention
Embodiment 1
Present embodiments provide 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, it is inner that conical screw 3 is arranged on expansion set 2, screw 5 is arranged on one end of conical screw 3 through packing ring 6, swivel nut 4 is threaded connection the one end being arranged on conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and Outer Taper cone angle is 6 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less than catheter diameter actual size 0.2 ~ 0.3 millimeter, during work, turn swivel nut 4, drive conical screw 3 to move to the left, the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 coordinates with it.
The material of described sleeve 1 is engineering plastics, is specially polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 end is with inner cone structure, and the angle a of interior wimble structure is at 6 °.
Duct forming is the inner wall supporting device for tube bending forming with soft plug, in guiding-tube bend process, for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.Bearing tolerances is comparatively large, and for eliminating gap, plug adopts cone centering expanding structure, by the outer field plastic sleeve of motion swelling plug of cone screw rod, thus swelling catheter diameter, eliminate the radial clearance between plug and ips.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts 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, and diameter is that the part of d section is slidably matched with conical screw 3, and h is of a size of 1.5 millimeters.
Embodiment 2
Present embodiments provide 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, it is inner that conical screw 3 is arranged on expansion set 2, screw 5 is arranged on one end of conical screw 3 through packing ring 6, swivel nut 4 is threaded connection the one end being arranged on conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and Outer Taper cone angle is 8 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less than catheter diameter actual size 0.2 ~ 0.3 millimeter, during work, turn swivel nut 4, drive conical screw 3 to move to the left, the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 coordinates with it.
The material of described sleeve 1 is engineering plastics, is specially polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 end is with inner cone structure, and the angle a of interior wimble structure is at 8 °.
Duct forming is the inner wall supporting device for tube bending forming with soft plug, in guiding-tube bend process, for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.Bearing tolerances is comparatively large, and for eliminating gap, plug adopts cone centering expanding structure, by the outer field plastic sleeve of motion swelling plug of cone screw rod, thus swelling catheter diameter, eliminate the radial clearance between plug and ips.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts 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, and diameter is that the part of d section is slidably matched with conical screw 3, and h is of a size of 2 millimeters.
Embodiment 3
Present embodiments provide 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, it is inner that conical screw 3 is arranged on expansion set 2, screw 5 is arranged on one end of conical screw 3 through packing ring 6, swivel nut 4 is threaded connection the one end being arranged on conical screw 3, the other end of conical screw 3 is the Outer Taper structure with tapering, and Outer Taper cone angle is 10 °.
Sleeve 1 and catheter diameter matched in clearance, during free state, sleeve 1 diameter is less than catheter diameter actual size 0.2 ~ 0.3 millimeter, during work, turn swivel nut 4, drive conical screw 3 to move to the left, the inner conical surface that the Outer Taper part swelling expansion set 2 of conical screw 3 coordinates with it.
The material of described sleeve 1 is engineering plastics, is specially polyetheretherketonematerials materials part.
Described conical screw 3 is 45# steel materials and parts.
Described expansion set 2 end is with inner cone structure, and the angle a of interior wimble structure is at 10 °.
Duct forming is the inner wall supporting device for tube bending forming with soft plug, in guiding-tube bend process, for the inwall of supporting tube bending radius, prevents tubular distortion and subsides.Bearing tolerances is comparatively large, and for eliminating gap, plug adopts cone centering expanding structure, by the outer field plastic sleeve of motion swelling plug of cone screw rod, thus swelling catheter diameter, eliminate the radial clearance between plug and ips.
The material of sleeve 1 is engineering plastics, in plug swelling process, avoids tube wall to scratch; Expansion set 2 adopts 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, and diameter is that the part of d section is slidably matched with conical screw 3, and h is of a size of 3 millimeters.
Claims (3)
1. the soft plug of duct forming, 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), it is inner that conical screw (3) is arranged on expansion set (2), screw (5) is arranged on one end of conical screw (3) through packing ring (6), swivel nut (4) is threaded connection the one end being arranged on conical screw (3), the other end of conical screw (3) is the Outer Taper structure with tapering, and Outer Taper cone angle is 6 ~ 10 °; The material of sleeve (1) is polyetheretherketonematerials materials.
2. according to the soft plug of duct forming according to claim 1, it is characterized in that: described conical screw (3) is 45# steel materials and parts.
3. according to the soft plug of duct forming according to claim 1, it is characterized in that: described expansion set (2) end is with inner cone 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 CN102886406A (en) | 2013-01-23 |
| CN102886406B true CN102886406B (en) | 2015-06-10 |
Family
ID=47530199
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 (11)
| 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 |
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10020725B4 (en) * | 2000-04-27 | 2005-06-30 | Thyssenkrupp Stahl Ag | Bending device for thin-walled metal pipes |
| CN202079160U (en) * | 2010-02-08 | 2011-12-21 | 株式会社东京发条制作所 | Spring guide locator |
-
2012
- 2012-10-09 CN CN201210385222.0A patent/CN102886406B/en not_active Expired - Fee Related
Patent Citations (11)
| 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 |
| 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 |
| 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 |
|---|---|
| CN102886406A (en) | 2013-01-23 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| 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: 20150610 Termination date: 20171009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |