EP1700648A1 - Dispositif d' élargissement de corps creux - Google Patents

Dispositif d' élargissement de corps creux Download PDF

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Publication number
EP1700648A1
EP1700648A1 EP06001479A EP06001479A EP1700648A1 EP 1700648 A1 EP1700648 A1 EP 1700648A1 EP 06001479 A EP06001479 A EP 06001479A EP 06001479 A EP06001479 A EP 06001479A EP 1700648 A1 EP1700648 A1 EP 1700648A1
Authority
EP
European Patent Office
Prior art keywords
expansion
expansion device
jaws
hard material
expanding mandrel
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Withdrawn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
EP06001479A
Other languages
German (de)
English (en)
Inventor
Helmut Rothenberger Dr.
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 EP1700648A1 publication Critical patent/EP1700648A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21D41/021—Enlarging by means of tube-flaring hand tools

Definitions

  • the invention relates to an expansion device for hollow bodies according to the preamble of patent claim 1.
  • the pressure distribution block can be provided with a hard surface coating of, for example, titanium nitride.
  • a transition from surface pressure to edge or line pressing does not take place at the contact surfaces, and the surfaces touching in the area of the titanium nitride coating are not involved in the expansion process, but form only a pressure-tight seal.
  • a hand tool is such a device neither intended nor suitable.
  • the invention is therefore based on the object to provide an expansion device of the type described above, by the despite the very complex Kunststoffform- and friction conditions, which are explained in detail in the detailed description, the life or life expectancy the expansion device and in particular the expanding mandrel of the system is significantly extended.
  • a base body 1 which forms a guide housing and on which in a radial plane projecting a first hand lever 2 is rigidly fixed.
  • the parts 1 and 2 can also be made in one piece.
  • the main body 1 has formed two protruding fork parts 3, of which only the rear is shown.
  • the fork parts 3 are penetrated by a pivot pin 4 whose axis intersects the system axis A-A perpendicular.
  • a second hand lever 5 is pivotally mounted between the fork parts 3, which has its own gap-shaped recess 5a between the fork parts 3.
  • a stop 6 is arranged, which consists of a threaded pin 6a and a cap nut 6b with a knurling 6c.
  • the attachment of the stop 6 can be done alternatively in the hand lever 2 or in the main body 1 instead of in the hand lever 5.
  • the recess 5a is in turn penetrated by an axle 7, which is pivotable about the axle 4 when the hand lever 5 moves.
  • the axle pin 7 carries within the recess 5a a toggle lever 8, which acts on a further, the system axis AA perpendicular cutting, axle pin 9 on an expanding mandrel 10.
  • the axle bolts 4, 7 and 9 are parallel to each other.
  • the expanding mandrel 10 contains three sections, namely a bifurcated portion 10a, in the leg of the axle 9 is mounted, a cylindrical portion 10b and a conical portion 10c, which causes the spreading described below.
  • the expanding mandrel 10 is guided in a coaxial with the system axis AA bore 11 of the base body 1.
  • the knee lever is used both for expanding and for forced retraction of the expanding mandrel, which follow the expansion jaws in the transverse direction thereto.
  • the main body 1 carries on its own external thread 1a (Figure 2) coaxially with the system axis A-A an adapter ring 12 with an external thread 12a and a knurling 12b. From the main body 1 and the adapter 12, the conical portion 10c of the expanding mandrel 10 projects - under the action of the toggle lever 8 axially movable - out.
  • the stop 6 prevents the axle bolts 4, 7 and 9 can reach an extended position in which the forces are known to go to infinity.
  • An expansion head 13 which has a cap 14 and a set of identical sector-shaped spreader jaws 15 that are radially guided in the cap 14, can be replaceably screwed to the main body 1.
  • This diameter "D” determines the inner diameter of a flared or expanded tube end 17a of a tube 17 (FIG. 3).
  • the adapter 12 can be dispensed with when it comes to equipping the main body with a smaller expansion head 13. Then, the expansion head 13 is screwed directly onto the thread of the base body 1.
  • the expansion jaws 15 have inside sector-shaped conical surfaces, which lie only in a single and very specific position to each other in a common conical surface or envelope surface. The reason lies in the manufacturing processes of the blank; eg by machining or by precision casting. The blank is later sawn diametrically and axially parallel under intentional material loss, whereby the mentioned radial gap 16 arise. Furthermore, the expansion heads 13 and the depth of the Screwing onto the body 1 tolerances.
  • the expanding mandrel 10 has only a single conical surface. During expansion, this leads to the fact that 10 positions with line and edge pressings with infinite values must be passed through on the surface of the expanding mandrel. In addition, during the expansion of the tube 17, additional sliding movements occur, which occur under increasing forces, because the expanded material solidifies during flow due to the material. This has a correspondingly high wear on the expanding mandrel 10 result.
  • the conical portion 10c of the expanding mandrel 10 is provided on its surface with a highlighted by thick lines coating 18 made of a hard material, preferably titanium nitride (TiN).
  • TiN titanium nitride
  • the figure 2 shows now - with continuation of the previous numbering further details of the device.
  • the coating of the expanding mandrel also on the cylindrical portion 10 b of Expanding mandrel 10 may extend.
  • This has the further advantage that the wear-causing influence of the transverse forces exerted by the toggle lever 8 on the expanding mandrel guide can also be counteracted.
  • the spreading jaws are guided by rivets 19 in the cap.
  • the implementation of the axial movement of the expanding mandrel 10 in radial movements of the expanding jaws is indicated by arrows.
  • FIG. 3 shows an axial section through a tube end 17a that has been widened or expanded with the device according to FIG.
  • a non-expanded tube 17 is inserted and soldered there.
  • the inner surface of the tube 17 slides due to the increase in the circumference of the outer surfaces of the expansion jaws 15. It is therefore of additional advantage to provide these outer surfaces and possibly also the inner surfaces of the expansion jaws with the said hard material covering.
  • Figure 4 shows an axial section similar to Figure 2, but with the difference that the expanding mandrel 20 consists of a correspondingly wear-resistant coated cone part, which is screwed interchangeable by means of a threaded connection 21 in a housing-side drive rod 22.
  • a transition piece 23 is still screwed by means of a threaded connection 24 with a cylindrical recess 23 a, in which the end of the expanding mandrel 20 can be pulled back.
  • This embodiment has the additional advantage that, with a corresponding design of the drive rod 22, an uncoated expanding mandrel can be exchanged for an expanding mandrel 20 which is coated according to the invention, which also makes retrofitting possible.
  • the expanding mandrel 20 can be driven in an analogous manner as in Figures 1 and 2 by a toggle not shown here or by a combination of pinion and rack or by a cam. However, it is also possible to provide an electromechanical or electro-hydraulic drive device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Chemical Vapour Deposition (AREA)
EP06001479A 2005-03-08 2006-01-25 Dispositif d' élargissement de corps creux Withdrawn EP1700648A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005010494A DE102005010494A1 (de) 2005-03-08 2005-03-08 Expansionsvorrichtung für Hohlkörper

Publications (1)

Publication Number Publication Date
EP1700648A1 true EP1700648A1 (fr) 2006-09-13

Family

ID=36481361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06001479A Withdrawn EP1700648A1 (fr) 2005-03-08 2006-01-25 Dispositif d' élargissement de corps creux

Country Status (4)

Country Link
US (1) US20060201228A1 (fr)
EP (1) EP1700648A1 (fr)
JP (1) JP2006247747A (fr)
DE (1) DE102005010494A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450879C1 (ru) * 2011-03-29 2012-05-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский университет имени первого Президента России Б.Н. Ельцина" Устройство для раздачи труб
CN105436333A (zh) * 2016-01-05 2016-03-30 天津市久盛通达科技有限公司 一种钢管易口机
CN107931460A (zh) * 2017-11-14 2018-04-20 山东同创汽车散热装置股份有限公司 一种扩张定位装置及压铆机

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007294B3 (de) * 2007-02-14 2008-07-10 Rothenberger Ag Antriebsgerät mit einer Kupplung für Werkzeugköpfe
AU2011201540B2 (en) 2010-04-06 2013-10-31 Milwaukee Electric Tool Corporation Pex expanding tool
DK2420333T3 (en) * 2010-08-16 2015-03-02 Uponor Innovation Ab Tools and methods for expansion of a touching
US9057397B2 (en) * 2010-09-22 2015-06-16 Mcgard Llc Chrome-plated fastener with organic coating
US9914260B2 (en) 2014-06-20 2018-03-13 Milwaukee Electric Tool Corporation PEX expanding tool
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
JP6580935B2 (ja) * 2015-10-16 2019-09-25 Ｊｆｅスチール株式会社 拡管機
EP3184183A1 (fr) * 2015-12-22 2017-06-28 Carrosserie Technic Écarteur mécanique
US9975289B2 (en) 2016-07-27 2018-05-22 Black & Decker Inc. PEX expanding tool
US11596999B2 (en) 2019-02-20 2023-03-07 Milwaukee Electric Tool Corporation PEX expansion tool
EP3698942A3 (fr) 2019-02-20 2020-10-28 Milwaukee Electric Tool Corporation Outil d'expansion pex
US11110646B2 (en) 2019-07-23 2021-09-07 Brochman Innovations, Llc PEX tubing expander head
CN214726466U (zh) 2020-11-27 2021-11-16 米沃奇电动工具公司 扩展工具
EP4319959A1 (fr) 2021-04-09 2024-02-14 Milwaukee Electric Tool Corporation Outil d'expansion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550424A (en) 1968-06-12 1970-12-29 Wlodzimierz Rast Tube expander
DE2654102C2 (de) 1976-11-29 1984-01-05 Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt Expansionskopf für Rohraufweitegeräte mit auswechselbaren Expansionsbacken
DE3826187A1 (de) 1988-08-02 1990-02-08 Rothenberger Werkzeuge Masch Aufweitewerkzeug fuer hohle werkstuecke
EP0653256A1 (fr) * 1993-11-12 1995-05-17 DE WAAL TECHNOLOGY & CONSULTANCY B.V. Dispositif pour écarter mécaniquement un tuyau ou section de tuyau
US5727414A (en) * 1995-06-07 1998-03-17 American National Can Company Method for reshaping a container
DE19730054C1 (de) * 1997-07-14 1999-03-18 Eckhard Wolter Expansionswerkzeug zum Verformen rohrförmiger Werkstückenden
DE10343869B3 (de) 2003-09-23 2004-09-09 Daimlerchrysler Ag Aufnahme einer Aufweitlanze zum partiellen Aufweiten eines rohrförmigen Hohlprofils

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117814A1 (de) * 1991-05-31 1992-12-03 Bosch Gmbh Robert Werkzeug fuer feinstbearbeitung
US6722014B2 (en) * 2001-07-20 2004-04-20 Camax Tool Company, Inc. Energized sequential tool coating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550424A (en) 1968-06-12 1970-12-29 Wlodzimierz Rast Tube expander
DE2654102C2 (de) 1976-11-29 1984-01-05 Rothenberger GmbH & Co Werkzeuge-Maschinen KG, 6000 Frankfurt Expansionskopf für Rohraufweitegeräte mit auswechselbaren Expansionsbacken
DE3826187A1 (de) 1988-08-02 1990-02-08 Rothenberger Werkzeuge Masch Aufweitewerkzeug fuer hohle werkstuecke
EP0653256A1 (fr) * 1993-11-12 1995-05-17 DE WAAL TECHNOLOGY & CONSULTANCY B.V. Dispositif pour écarter mécaniquement un tuyau ou section de tuyau
US5727414A (en) * 1995-06-07 1998-03-17 American National Can Company Method for reshaping a container
DE19730054C1 (de) * 1997-07-14 1999-03-18 Eckhard Wolter Expansionswerkzeug zum Verformen rohrförmiger Werkstückenden
DE10343869B3 (de) 2003-09-23 2004-09-09 Daimlerchrysler Ag Aufnahme einer Aufweitlanze zum partiellen Aufweiten eines rohrförmigen Hohlprofils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"RÖMPP CHEMIE LEXIKON", vol. T-Z, 1995, GEORG THIEME VERLAG, pages: 4631

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450879C1 (ru) * 2011-03-29 2012-05-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский университет имени первого Президента России Б.Н. Ельцина" Устройство для раздачи труб
CN105436333A (zh) * 2016-01-05 2016-03-30 天津市久盛通达科技有限公司 一种钢管易口机
CN107931460A (zh) * 2017-11-14 2018-04-20 山东同创汽车散热装置股份有限公司 一种扩张定位装置及压铆机
CN107931460B (zh) * 2017-11-14 2024-01-23 山东同创汽车散热装置股份有限公司 一种扩张定位装置及压铆机

Also Published As

Publication number Publication date
DE102005010494A1 (de) 2006-09-14
US20060201228A1 (en) 2006-09-14
JP2006247747A (ja) 2006-09-21

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