EP1407838A2 - Outil d' expansion de corps creux avec entraínement électro-hydraulique - Google Patents

Outil d' expansion de corps creux avec entraínement électro-hydraulique Download PDF

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Publication number
EP1407838A2
EP1407838A2 EP03014662A EP03014662A EP1407838A2 EP 1407838 A2 EP1407838 A2 EP 1407838A2 EP 03014662 A EP03014662 A EP 03014662A EP 03014662 A EP03014662 A EP 03014662A EP 1407838 A2 EP1407838 A2 EP 1407838A2
Authority
EP
European Patent Office
Prior art keywords
expansion
piston
piston rod
tool according
fuselage
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.)
Withdrawn
Application number
EP03014662A
Other languages
German (de)
English (en)
Other versions
EP1407838A3 (fr
Inventor
Ewald Wagner
Manfred Waltersdorf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rothenberger AG
Original Assignee
Rothenberger AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rothenberger AG filed Critical Rothenberger AG
Publication of EP1407838A2 publication Critical patent/EP1407838A2/fr
Publication of EP1407838A3 publication Critical patent/EP1407838A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/18—Combined units comprising both motor and pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/02—Enlarging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load

Definitions

  • the invention relates to an expansion tool for hollow bodies, in particular for pipes with an electro-hydraulic drive, containing one Electric motor, a hydraulic pump, a working cylinder with an axis and a piston, a piston rod, a return spring for the piston, an overpressure backflow valve and a reservoir for a hydraulic fluid, the working cylinder being connected to an expansion head which is a cap with a set of radially movable expansion jaws has, and wherein at the end of the piston rod an expansion body is arranged, which is adapted to the expansion body by means of the piston Cavity can be inserted within the expanding jaws.
  • expansion tools also called “expanders” for short, exist usually from two modules, namely from an expansion head and a drive, both of which are releasably connected to one another.
  • she are used to expand hollow workpieces, especially pipes and pipe ends for the purpose of producing tight, pressure and tensile pipe connections.
  • Metals such as serve as pipe materials soft steel, aluminum, especially copper, with plastic on both sides coated metal such as aluminum and also plastic, which is the property has to partially get together again after expanding pull.
  • the material properties in particular the flow behavior form a first criterion for the design of the Expander. With all materials it should be noted that the deformation forces increase over the deformation path.
  • the expansion head has a set of radially movable expansion jaws, their outer surfaces, the so-called work surfaces, not just the geometry of the workpieces, but also their deformation properties and are adapted to the work sequences when expanding. If you look at the set of expanding jaws - in a first approximation and simplified - than on the circumference closed body of rotation, so the work surfaces Cylinder surfaces, stepped cylinder surfaces, conical surfaces and Combinations of cylindrical surfaces and conical surfaces and the like be more.
  • a radial ring flange connects to the work surfaces, with which the spreading surfaces are guided in a cap, which is detachable is connected to the drive.
  • the radial guide in the cap can be done by rivets, press pins and grooves in the ring flange and / or be supported.
  • Such jaw sets are usually made of rotating bodies made of steel produced by radial, axially parallel sawing in four to eight sectors, where the width of the saw blade is the gap width and the radial
  • the displacement path of the individual expanding jaws is determined, i.e. the maximal Reduction in diameter compared to the original rotating body. So the work surfaces are sector surfaces, and the original one Ring flange forms flange sectors.
  • Special forms of expanding jaws can also be made by precision casting, e.g. such forms, where the side faces of the sectors delimiting the column below Forming a movable toothing interlock so that the Column by zone to prevent the pipe material from "sinking" into the column be bridged. This is a particular risk with plastics and the large radial expansion paths required for this.
  • each expanding jaw Seen in an axially parallel cross section, each expanding jaw has together with the flange sector an approximately L-shaped cross section.
  • expander forceps The well-known archetype of such expanders is the so-called expander forceps, in which the expansion body is mounted in a base body, from which a first handle protrudes radially. It is pivotable in the base body a second handle is mounted, the movement of which by means of cams and without rollers, toggle levers or a rack on the expansion body is transmitted.
  • the different types of power transmission are from accompanies different friction losses.
  • the invention is therefore based on the object of an electro-hydraulic Expansion tool of the type described above continue to develop that with different expansion heads Size, geometry and with different gear ratios can be provided without the risk that on the one hand large expansion heads cannot reliably expand End can be performed and without on the other hand with small expansion heads destruction or damage to the expansion head he follows.
  • an electro-hydraulic expansion tool described genus improved in that it with Expansion heads of different sizes, geometries and with different translation ratios can be provided without there is a risk that on the one hand with large expansion heads Expansion process can not be completed reliably and without destruction on the other hand with small expansion heads or damage to the expansion head.
  • the invention now proposes a way of setting the piston travel in a defined manner, thereby the maximum distances according to the design of the Expansion heads and the expansion body by intercepting the forces inside limit the hydraulic system.
  • the defines preset Piston travel is now safe for all expansion heads in question until the overpressure backflow valve responds to the end led without destruction even smaller than the largest Expansion heads can come.
  • the expansion body acts on the expansion heads with one each through the opening angle of the expansion body conditional translation, resulting in a significant Strengthening leads.
  • This - for expanding pipes larger Diameter up to 28 mm and above and for deformation-resistant Desired pipe materials - power reinforcement would have been a destructive one Effect on smaller expansion heads, for example with one Misalignment of the expanding jaws and or if accidentally Put on the wrong expander head.
  • the axial power loss within of the hydraulic system takes place without the first in the expansion head power amplification taking place.
  • FIG. 1 In Figure 1 and, partially in Figure 2, is a drive 1 with an electric motor 2 shown, the via a gear 3 and an eccentric 4 on a Hydraulic pump 5 acts, which is designed as a piston pump.
  • a Valve control over a Valve control, not numbered in more detail, is converted from a memory 6 with a Refill cap 7 hydraulic fluid sucked in and through a channel 8 in a piston chamber 9 of a working cylinder 10 with an axis A-A pressed in which a piston 11 with an attached piston rod 12 is arranged.
  • a connecting device is located in the outer end of the piston rod 12 13 for interchangeable insertion of different expansion bodies 14, of which here the halves 14a and 14b with two expansion bodies different lengths and slopes are shown. It goes without saying that spreaders with different base diameters are used can become what e.g. from a comparison of the halves 14a and 14b emerges.
  • the base of 14a has a smaller one, the base of 14b a larger diameter than the piston rod 12.
  • the connecting device 13 here is a threaded connection, e.g. also by a Bayonet connection can be replaced.
  • a screwed-on sleeve 15 through Screws 16 is fixed.
  • the outer end of the sleeve 15 carries another Connection device 17 for interchangeable attachment of expansion heads 18 ( Figures 3 to 5).
  • the connector 17 is here a threaded connection, e.g. also through a bayonet connection can be replaced.
  • a stop body 20 which consists of two Parts consists of an adjusting nut 20a and a hollow cylinder 20b.
  • the adjusting nut 20a is by means of a threaded connection 21 adjustable.
  • Two radial recesses 22 (FIG. 2) are used for this purpose correspondingly complementary projections 23 of an adjusting tool 24 6 can be used.
  • At 25 is the radial face the sleeve 15 referred to when setting as the reference edge for the Adjustment tool 24 is used.
  • the entire hydraulic system - including the response value of the Overpressure backflow valve 27 - has such a design that the largest expansion head in question for all pipe dimensions and Pipe materials reliably complete their expansion process can, provided the stop body 20 is correctly set.
  • an expansion head 18 is shown, the The basic principle of construction is known from the prior art.
  • a cap 28 are - equidistant on the circumference distributed - numerous expanding jaws 29, which by rivets 30 in radial Slit the cap and through a distance between one Insert ring 31, the end face 25 ( Figure 2) and an annular flange Throw cap 28 are guided.
  • the outer surfaces are the work surfaces, and inside the expansion jaws 29 there is a cavity 32 geometry described above. This gives the expanding jaws 29 - seen axially parallel - a substantially L-shaped cross section.
  • Figure 6 also shows that the setting tool 24 at least on one part its length as a sleeve and with the projections 23 to Engagement in the adjusting nut 20a and with an annular scale 39 is provided for the setting depth.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
EP03014662A 2002-10-11 2003-06-27 Outil d' expansion de corps creux avec entraínement électro-hydraulique Withdrawn EP1407838A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002147549 DE10247549B3 (de) 2002-10-11 2002-10-11 Expansionswerkzeug für Hohlkörper mit einem elektrohydraulischen Antrieb
DE10247549 2002-10-11

Publications (2)

Publication Number Publication Date
EP1407838A2 true EP1407838A2 (fr) 2004-04-14
EP1407838A3 EP1407838A3 (fr) 2005-10-12

Family

ID=32010445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014662A Withdrawn EP1407838A3 (fr) 2002-10-11 2003-06-27 Outil d' expansion de corps creux avec entraínement électro-hydraulique

Country Status (2)

Country Link
EP (1) EP1407838A3 (fr)
DE (1) DE10247549B3 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084748A1 (fr) * 2005-02-10 2006-08-17 Westphal Werner Reservoir sous pression
WO2012037935A1 (fr) * 2010-08-24 2012-03-29 Rothenberger Ag Éléments d'accouplement pour raccorder un appareil d'entraînement à une tête d'expanseur
WO2013017669A1 (fr) * 2011-08-03 2013-02-07 Pressure Wave Systems Gmbh Dispositif de compression ainsi qu'un dispositif de réfrigération qui en est équipé et une machine frigorifique qui en est équipée
EP2776183A4 (fr) * 2011-11-11 2015-07-22 Addisonmckee Inc Unité de pompe hydraulique à commande par servomoteur pour matériel de forme d'embout de tube
CN105618600A (zh) * 2014-10-28 2016-06-01 中国石油化工股份有限公司 管径膨胀装置
CN107202048A (zh) * 2017-06-13 2017-09-26 北京航空航天大学 一种高度集成压力平衡式深海电液伺服机构
US9975289B2 (en) 2016-07-27 2018-05-22 Black & Decker Inc. PEX expanding tool
CN108500156A (zh) * 2018-06-01 2018-09-07 金华市威科工贸有限公司 一种便携式电动液压胀管器
EP2900397B1 (fr) 2012-09-28 2019-06-19 Gustav Klauke GmbH Outil élargisseur à main et procédé pour faire fonctionner un outil élargisseur de travail à main
RU205213U1 (ru) * 2021-04-26 2021-07-02 Управляющая компания общество с ограниченной ответственностью "ТМС групп" Калибратор
CN114109803A (zh) * 2021-07-26 2022-03-01 浙江飞越机电有限公司 液压管件加工工具的偏心柱塞结构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010035221B4 (de) * 2010-08-24 2013-04-18 Rothenberger Ag Kupplung für die axiale Verbindung eines Antriebsgeräts mit Expanderkopf
DE102010035222B4 (de) * 2010-08-24 2013-04-18 Rothenberger Ag Kupplung für die axiale Verbindung eines Antriebsgerätes mit einem Expanderkopf
DE102013106287A1 (de) * 2013-06-17 2014-12-18 Thyssenkrupp Steel Europe Ag Vorrichtung zur Herstellung mindestens eines Hinterschnitts in ein geschlitztes oder geschlossenes Blechprofil
DE102013107294A1 (de) * 2013-07-10 2015-01-15 Gustav Klauke Gmbh Handarbeitsgerät und Hand-Aufweitgerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385087A (en) * 1966-02-18 1968-05-28 Huth Mfg Corp Swaging tool
US3995703A (en) * 1974-05-20 1976-12-07 Robert Bosch G.M.B.H. Electrohydraulically operated portable power tool
US4010630A (en) * 1976-04-08 1977-03-08 Textron, Inc. Hydraulic actuated power tool
US4494398A (en) * 1983-02-14 1985-01-22 Midas International Corporation Tubing expander apparatus
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308736A (en) * 1979-01-05 1982-01-05 J & S Hydraulics, Inc. Tube expander
US6508097B2 (en) * 2000-05-19 2003-01-21 Airmo, Inc. Modular system for expanding and reducing tubing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385087A (en) * 1966-02-18 1968-05-28 Huth Mfg Corp Swaging tool
US3995703A (en) * 1974-05-20 1976-12-07 Robert Bosch G.M.B.H. Electrohydraulically operated portable power tool
US4010630A (en) * 1976-04-08 1977-03-08 Textron, Inc. Hydraulic actuated power tool
US4494398A (en) * 1983-02-14 1985-01-22 Midas International Corporation Tubing expander apparatus
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006084748A1 (fr) * 2005-02-10 2006-08-17 Westphal Werner Reservoir sous pression
US9943949B2 (en) 2010-08-24 2018-04-17 Rothenberger Ag Coupling parts for connecting a driving device to an expander head
WO2012037935A1 (fr) * 2010-08-24 2012-03-29 Rothenberger Ag Éléments d'accouplement pour raccorder un appareil d'entraînement à une tête d'expanseur
WO2013017669A1 (fr) * 2011-08-03 2013-02-07 Pressure Wave Systems Gmbh Dispositif de compression ainsi qu'un dispositif de réfrigération qui en est équipé et une machine frigorifique qui en est équipée
US10578099B2 (en) 2011-08-03 2020-03-03 Pressure Wave Systems Gmbh Cooling device fitted with a compressor
EP2776183A4 (fr) * 2011-11-11 2015-07-22 Addisonmckee Inc Unité de pompe hydraulique à commande par servomoteur pour matériel de forme d'embout de tube
US9505049B2 (en) 2011-11-11 2016-11-29 Addisonmckee Inc. Servo motor controlled hydraulic pump unit for tube end forming equipment
EP2900397B1 (fr) 2012-09-28 2019-06-19 Gustav Klauke GmbH Outil élargisseur à main et procédé pour faire fonctionner un outil élargisseur de travail à main
EP2900397B2 (fr) † 2012-09-28 2022-07-13 Gustav Klauke GmbH Outil élargisseur à main
CN105618600B (zh) * 2014-10-28 2017-12-26 中国石油化工股份有限公司 管径膨胀装置
CN105618600A (zh) * 2014-10-28 2016-06-01 中国石油化工股份有限公司 管径膨胀装置
US9975289B2 (en) 2016-07-27 2018-05-22 Black & Decker Inc. PEX expanding tool
CN107202048B (zh) * 2017-06-13 2018-05-29 北京航空航天大学 一种高度集成压力平衡式深海电液伺服机构
CN107202048A (zh) * 2017-06-13 2017-09-26 北京航空航天大学 一种高度集成压力平衡式深海电液伺服机构
CN108500156A (zh) * 2018-06-01 2018-09-07 金华市威科工贸有限公司 一种便携式电动液压胀管器
RU205213U1 (ru) * 2021-04-26 2021-07-02 Управляющая компания общество с ограниченной ответственностью "ТМС групп" Калибратор
CN114109803A (zh) * 2021-07-26 2022-03-01 浙江飞越机电有限公司 液压管件加工工具的偏心柱塞结构
CN114109803B (zh) * 2021-07-26 2024-04-26 浙江飞越机电有限公司 液压管件加工工具的偏心柱塞结构

Also Published As

Publication number Publication date
DE10247549B3 (de) 2004-05-06
EP1407838A3 (fr) 2005-10-12

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