EP0718057A2 - Dispositif d'élargissement de pièces creuses - Google Patents

Dispositif d'élargissement de pièces creuses Download PDF

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Publication number
EP0718057A2
EP0718057A2 EP95119901A EP95119901A EP0718057A2 EP 0718057 A2 EP0718057 A2 EP 0718057A2 EP 95119901 A EP95119901 A EP 95119901A EP 95119901 A EP95119901 A EP 95119901A EP 0718057 A2 EP0718057 A2 EP 0718057A2
Authority
EP
European Patent Office
Prior art keywords
jaws
expanding
edges
expansion
broken
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Withdrawn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
EP95119901A
Other languages
German (de)
English (en)
Other versions
EP0718057A3 (fr
Inventor
Thilo Weber
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 Werkzeugemaschinen GmbH
Original Assignee
Rothenberger Werkzeugemaschinen GmbH
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 Werkzeugemaschinen GmbH filed Critical Rothenberger Werkzeugemaschinen GmbH
Publication of EP0718057A2 publication Critical patent/EP0718057A2/fr
Publication of EP0718057A3 publication Critical patent/EP0718057A3/xx
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a device for expanding hollow bodies, in particular pipe ends, with more than two identical, essentially sector-shaped expanding jaws arranged about an axis "A", which are separated from one another by parting lines and have partially cylindrical working surfaces and by means of a drive device in the radial direction are arranged movably to the axis "A" in a holder.
  • the parting lines are limited by the side surfaces of the expansion jaws and can be opened between the distance 0 and a predetermined maximum value.
  • the shape of the expanded hollow bodies which consist, for example, of tubes made of copper or plastic, deviates from the exact cylindrical shape, and the sharp edges on the gap edges form on the inner surface of the tube.
  • the sharp edges result from the manufacturing process of the expanding jaws: a rotating body is broken down into sections by sawing processes that form the expanding jaws.
  • each expanding jaw must necessarily correspond to the wall thickness of the pipe, if necessary plus a so-called "capillary gap" for accommodating a solder or an adhesive. It is desirable for the capillary gap to have a gap width that is as constant as possible over the entire circumference of the connection point. This requirement is opposed by the gap or the joint between the individual expanding jaws.
  • Plastic pipes generally have a greater wall thickness than metal pipes of the same outside diameter.
  • the working stroke of the expansion jaws must be adapted to this wall thickness, which necessarily also increases the gap width of the parting lines at the end of the expansion process.
  • WO 84/00120 discloses a tube expander with partially frustoconical expansion jaws which have only short cylindrical surfaces and which are designed as sectors and which perform pivoting movements when expanding.
  • sectors of different shape and length which are referred to as main and secondary jaws, are provided alternately, by any Fill in the gap between the expander jaws.
  • the construction of such expander heads and their control is complicated because the different expander jaws have to perform axial relative movements against one another at times. All expanding jaws have bevels only at their arcuate ends, not at the longitudinal edges which are at least partially parallel to the axis.
  • Expansion heads of this type can only be used in connection with specially designed expander tongs specially designed for this purpose, but not as retrofit elements for expander tongs already on the market. Above all, however, the expansion process must be carried out progressively by pulling the expanded expander jaws out of the tube in order to produce a somewhat cylindrical expansion. Before the expansion process, the tube with the expander jaws must be pushed against the expander pliers against a spring force in order to put the device in working order. This makes the device complicated to set up and the process takes time getting used to.
  • the invention is therefore based on the object of specifying a simply constructed and easy-to-use device of the type described at the outset, with which the hollow body can be expanded as gently as possible and which can be used in conjunction with conventional expander pliers.
  • the object is achieved in that the expanding jaws on both sides of each parting line are broken at the axially parallel edges.
  • Such identical expanding jaws are present more than twice, preferably at least four times, usually six times or eight times.
  • edges can be broken by any geometric shape, for example by chamfering, rounding, or by chemical etching or precision casting. It has surprisingly been found that even slight deviations from a sharp angle of 90 ° between the gap wall and the working surface facilitate the flow of the material and prevent the edges from "mapping" on the inner pipe surface and the dreaded whitening of plastics.
  • a so-called expanding mandrel is usually used as the drive device for the expanding jaws, which has a frustoconical or truncated pyramid-shaped end and is inserted in the axial direction into a correspondingly shaped cavity between the expanding jaws.
  • the axial movement of the expanding mandrel is converted into a single, exclusively radial working stroke of the expanding jaws via appropriately designed sliding surfaces.
  • a plier-shaped expansion tool with a tool body, in which an expanding mandrel is mounted, is described in DE-PS 40 71 404.
  • the expanding mandrel is driven by an arcuate link which acts on a rolling element in the expanding mandrel.
  • the use of the device according to the invention is not limited to such an expansion tool; rather, pliers-like expansion tools with a cam drive or with a rack and pinion drive are also suitable. Threaded spindles or hydraulic drives in which the expanding mandrel is driven by a hydraulic piston can also be used as drive devices.
  • the invention also relates to devices in which each expanding jaw has a plurality of stepped, partially cylindrical working surfaces, as is described, for example, in DE-PS 42 02 348 C1.
  • the number of diameter gradations can be increased even further, so that in this way a universal expansion tool for different Diameter is obtained. It is only necessary that each work surface on both sides of all the joints passes into the gap walls by means of broken edges.
  • FIGS. 1 to 4 Three exemplary embodiments of the subject matter of the invention are explained in more detail below with reference to FIGS. 1 to 4.
  • an expansion head 1 is shown, the supporting part of which is a union nut 2 with an internal thread 3, with which the expansion head 1 can be screwed onto a tool base body, not shown here.
  • This basic tool body includes a broken mandrel 4 with a conical expansion surface 5.
  • the union nut has an annular inner flange 6 on the end facing away from the internal thread 3, which serves to support and hold a total of six expansion jaws 7.
  • Inner flange sectors 8, which are parts of the expanding jaws 7 and have grooves 9 on their outer surfaces, in which an annular tension spring 10 is mounted, cooperate with the inner flange 6 on its inner circular ring surface.
  • the flange sectors 8 are each connected to the inner flange 6 by a rivet 12 pressed into corresponding bores 11, the axis of which runs parallel to the axis AA of the expansion head.
  • the Rivet 12 also penetrates the inner flange 6, which for the purpose of radial movement of the expanding jaws with the rivet has elongated and radially extending recesses, which are not particularly emphasized here.
  • Figure 1 shows the expanding jaws 7 in their most outward position.
  • the spreading jaws 7 have working surfaces 13, which are parts of a common cylindrical surface, the diameter of which corresponds to the final diameter of the widening to be produced. Since the initial position of the expansion jaws is shifted radially inwards, 7 expansion joints 14 are formed during the expansion process between the expansion jaws, which are delimited by side surfaces 7a and 7b, which form the so-called gap walls.
  • edges 7c which form the transitions between the side surfaces 7a, 7b and the working surfaces 13, are broken over their entire length, ie between the end surfaces 7d and the widenings 7e, of the expanding jaws 7, which is explained in more detail with reference to FIGS. 2 to 4 becomes:
  • chamfers which include opening angles of 60 ° or 90 ° between them, i.e. the side surfaces are chamfered on their axially parallel outer edges at angles of 30 ° and 45 °, respectively.
  • the angles between these chamfers and the work surfaces 13 are therefore obtuse angles, which differ significantly from 90 °, that this spatial shape is already sufficient to solve the task at hand!
  • FIG. 4 shows rounded edges 7c which are more difficult to manufacture by machining, but which are very inexpensive to manufacture by precision casting or chemical etching.
  • the chamfers or roundings form, as it were, "notches" as long as the expanding jaws are not expanded. It has been shown that the notch depth and width is not particularly critical and can be found by trial and error can, keeping in mind that the work surfaces 13 should be as large as possible. It can be seen from all the figures that the edge breaks are present on both sides of all separating joints 14, ie the “notches” are mirror-symmetrical to the radial center planes of the separating joints 14. In any case, the radial working stroke of the expanding jaws is also greater than the maximum wall thickness of the pipes to be expanded .
  • the device according to the invention it is possible, for example, to expand plastic pipelines with an outer diameter of 28 mm and a wall thickness of 3 to 4 mm by about 10 mm in diameter in order to be able to insert a correspondingly dimensioned counterpart with a cylindrical surface of corresponding diameter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP95119901A 1994-12-25 1995-12-16 Dispositif d'élargissement de pièces creuses Withdrawn EP0718057A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944446506 DE4446506A1 (de) 1994-12-25 1994-12-25 Vorrichtung zum Aufweiten von Hohlkörpern
DE4446506 1994-12-25

Publications (2)

Publication Number Publication Date
EP0718057A2 true EP0718057A2 (fr) 1996-06-26
EP0718057A3 EP0718057A3 (fr) 1996-07-10

Family

ID=6537049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119901A Withdrawn EP0718057A2 (fr) 1994-12-25 1995-12-16 Dispositif d'élargissement de pièces creuses

Country Status (2)

Country Link
EP (1) EP0718057A2 (fr)
DE (1) DE4446506A1 (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0878287A1 (fr) * 1997-05-12 1998-11-18 Virax S.A. Dispositif d'expansion pour réaliser des emboítures aux extrémités de tuyaux en matière plastique, ou complexe plastique-aluminium
DE19924695A1 (de) * 1999-05-28 2000-11-30 Rothenberger Werkzeuge Ag Expansionswerkzeug für Hohlkörper und Verfahren zu dessen Herstellung
DE19963885C1 (de) * 1999-12-30 2001-05-03 Rehau Ag & Co Verfahren zum Aufweiten von flexiblen Rohren und Vorrichtung zur Durchführung des Verfahrens
EP1938950A1 (fr) 2006-12-28 2008-07-02 Virax, SAS Dispositif d'outil à expansion pour pince sur machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite
US7800224B2 (en) 2006-12-29 2010-09-21 Fairchild Korea Semiconductor, Ltd. Power device package
WO2011035840A2 (fr) 2009-09-23 2011-03-31 Rothenberger Ag Dispositif pour élargir des corps creux
DE202011107262U1 (de) 2011-10-25 2012-02-03 Peter Hoffmann Rohrexpander zum Aufweiten von Kunststoffrohren
DE202012100361U1 (de) 2012-02-03 2013-05-06 Rehau Ag + Co. Expansionskopf für Aufweitwerkzeuge und diesen umfassendes Expansionswerkzeug
US20130192331A1 (en) * 2012-01-30 2013-08-01 Fatigue Technology, Inc. Installation/processing systems, methods, and components
WO2013113509A1 (fr) * 2012-02-03 2013-08-08 Rehau Ag + Co Tête d'expansion pour outils d'élargissement, outil d'expansion comprenant ladite tête et utilisation de ladite tête d'expansion et dudit outil d'expansion
US8517715B2 (en) 2010-04-06 2013-08-27 Milwaukee Electric Tool Corporation PEX expanding tool
CN104624825A (zh) * 2014-12-17 2015-05-20 南京航空航天大学 一种深海用埋弧焊直缝焊管扩径外扇形块及其表面防护方法
RU2636428C2 (ru) * 2012-11-19 2017-11-23 Рехау Аг + Ко Экспандерная головка для расширительных инструментов и включающий ее в себя экспандерный инструмент
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US9914260B2 (en) 2014-06-20 2018-03-13 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
US10130985B2 (en) 2012-01-30 2018-11-20 Fatigue Technology, Inc. Smart installation/processing systems, components, and methods of operating the same
CN109531980A (zh) * 2018-12-29 2019-03-29 天津中财型材有限责任公司 一种塑料管材扩径变形工装
US11596999B2 (en) 2019-02-20 2023-03-07 Milwaukee Electric Tool Corporation PEX expansion tool
US11633775B2 (en) 2019-02-20 2023-04-25 Milwaukee Electric Tool Corporation PEX expansion tool
CN116037784A (zh) * 2023-02-20 2023-05-02 无锡市新峰管业有限公司 一种核电小口径管件扩口设备
US11779990B2 (en) 2021-04-09 2023-10-10 Milwaukee Electric Tool Corporation Expansion tool
US11819902B2 (en) 2020-11-27 2023-11-21 Milwaukee Electric Tool Corporation Expansion tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843560A1 (de) * 1998-09-23 2000-03-30 Rheinauer Maschinen & Armature Verfahren zur Herstellung einer Gehäusehalbschale für eine Absperrarmatur und Vorrichtung zur Durchführung des Verfahrens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000503A1 (fr) * 1986-07-16 1988-01-28 Heather Joan Lind Ameliorations apportees a des expanseurs de tubes
US4753101A (en) * 1986-12-08 1988-06-28 Shultz William E Apparatus and method for expanding and shaping tubular conduits
DE4220794A1 (de) * 1992-06-25 1994-01-05 Wirsbo Rohrprod Und Vertr Gmbh Spreizdorn mit Anfasung

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DE519535C (de) * 1927-02-20 1931-02-28 Paul Thomas Einhaendig zu bedienende Rohraufweitzange
CH617877A5 (en) * 1977-12-06 1980-06-30 Leleu Marcel Sa Expansion and/or positioning chuck
EP0112853A4 (fr) * 1982-07-01 1984-11-22 Rast Patent Mfg Pty Dispositif d'evasement de tuyau.
DE4202348C1 (en) * 1992-01-29 1993-06-09 Rothenberger Werkzeuge-Maschinen Gmbh, 6233 Kelkheim, De Tube end expansion tool - has holding drillings for guide pins at inner and outer flange sectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988000503A1 (fr) * 1986-07-16 1988-01-28 Heather Joan Lind Ameliorations apportees a des expanseurs de tubes
US4753101A (en) * 1986-12-08 1988-06-28 Shultz William E Apparatus and method for expanding and shaping tubular conduits
DE4220794A1 (de) * 1992-06-25 1994-01-05 Wirsbo Rohrprod Und Vertr Gmbh Spreizdorn mit Anfasung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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HEINRICH MAURI 'Der Vorrichtungsbau - Einteilung, Aufgaben und Elemente der Vorrichtungen ' 1957 , SPRINGER-VERLAG , BERLIN * Seite 32, Zeile 38 - Seite 32, Zeile 40; Abbildungen 131,132 * *

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0878287A1 (fr) * 1997-05-12 1998-11-18 Virax S.A. Dispositif d'expansion pour réaliser des emboítures aux extrémités de tuyaux en matière plastique, ou complexe plastique-aluminium
DE19924695A1 (de) * 1999-05-28 2000-11-30 Rothenberger Werkzeuge Ag Expansionswerkzeug für Hohlkörper und Verfahren zu dessen Herstellung
DE19924695C2 (de) * 1999-05-28 2001-05-10 Rothenberger Werkzeuge Ag Expansionswerkzeug für Hohlkörper und Verfahren zu dessen Herstellung
DE19963885C1 (de) * 1999-12-30 2001-05-03 Rehau Ag & Co Verfahren zum Aufweiten von flexiblen Rohren und Vorrichtung zur Durchführung des Verfahrens
EP2226182A2 (fr) 2006-12-28 2010-09-08 Virax, SAS Procédé d'expansion d'une extrémité d'un tuyau en matière plastique ou composite à l'aide d'un dispositif d'outil à expansion pour pince ou machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite, et dispositif d'outil à expansion pour sa mise en oeuvre
FR2910828A1 (fr) * 2006-12-28 2008-07-04 Virax Soc Par Actions Simplifi Dispositif d'outil a expansion pour pince sur machine a realiser des emboitures aux extremites de tuyaux en matiere plastique ou composite
EP2332716A3 (fr) * 2006-12-28 2011-07-27 Virax, SAS Dispositif d'outil à expansion pour pince ou machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite
EP2226182A3 (fr) * 2006-12-28 2010-10-13 Virax, SAS Procédé d'expansion d'une extrémité d'un tuyau en matière plastique ou composite à l'aide d'un dispositif d'outil à expansion pour pince ou machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite, et dispositif d'outil à expansion pour sa mise en oeuvre
EP2258537A1 (fr) 2006-12-28 2010-12-08 Virax, SAS Dispositif d'outil à expansion pour pince ou machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite
EP1938950A1 (fr) 2006-12-28 2008-07-02 Virax, SAS Dispositif d'outil à expansion pour pince sur machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite
EP2332716A2 (fr) 2006-12-28 2011-06-15 Virax, SAS Dispositif d'outil à expansion pour pince ou machine à réaliser des emboîtures aux extrémités de tuyaux en matière plastique ou composite
US8303295B2 (en) 2006-12-28 2012-11-06 Virax, Societe Par Actions Simplifiee Expansion tool device for pliers or machine for producing sockets at the ends of pipes made out of plastic or composite material
US7800224B2 (en) 2006-12-29 2010-09-21 Fairchild Korea Semiconductor, Ltd. Power device package
WO2011035840A2 (fr) 2009-09-23 2011-03-31 Rothenberger Ag Dispositif pour élargir des corps creux
DE102010004426B4 (de) * 2009-09-23 2012-10-18 Rothenberger Ag Vorrichtung zum Aufweiten von Hohlkörpern
DE102010004426A1 (de) 2009-09-23 2011-06-30 Rothenberger Ag, 65779 Vorrichtung zum Aufweiten von Hohlkörpern
US8801424B2 (en) 2009-09-23 2014-08-12 Rothenberger Ag Device for expanding hollow bodies
US8763439B2 (en) 2010-04-06 2014-07-01 Milwaukee Electric Tool Corporation PEX expanding tool
US8517715B2 (en) 2010-04-06 2013-08-27 Milwaukee Electric Tool Corporation PEX expanding tool
DE202011107262U1 (de) 2011-10-25 2012-02-03 Peter Hoffmann Rohrexpander zum Aufweiten von Kunststoffrohren
US10843250B2 (en) 2012-01-30 2020-11-24 Fatigue Technology, Inc. Smart installation/processing systems, components, and methods of operating the same
US20130192331A1 (en) * 2012-01-30 2013-08-01 Fatigue Technology, Inc. Installation/processing systems, methods, and components
US10130985B2 (en) 2012-01-30 2018-11-20 Fatigue Technology, Inc. Smart installation/processing systems, components, and methods of operating the same
CN104093506A (zh) * 2012-02-03 2014-10-08 雷奥两合股份公司 扩张工具的扩张头、包括扩张头的扩张工具及其使用方法
DE202012100361U1 (de) 2012-02-03 2013-05-06 Rehau Ag + Co. Expansionskopf für Aufweitwerkzeuge und diesen umfassendes Expansionswerkzeug
DE102012100894A1 (de) * 2012-02-03 2013-08-08 Rehau Ag + Co Expansionskopf für Aufweitwerkzeuge, diesen umfassendes Expansionswerkzeug sowie deren Verwendung
WO2013113508A1 (fr) 2012-02-03 2013-08-08 Rehau Ag + Co Tête d'expansion pour élargisseurs et élargisseur comprenant ladite tête d'expansion
CN104093544A (zh) * 2012-02-03 2014-10-08 雷奥两合股份公司 扩张工具的扩张头、包括扩张头的扩张工具
WO2013113509A1 (fr) * 2012-02-03 2013-08-08 Rehau Ag + Co Tête d'expansion pour outils d'élargissement, outil d'expansion comprenant ladite tête et utilisation de ladite tête d'expansion et dudit outil d'expansion
US9327337B2 (en) 2012-02-03 2016-05-03 Rehau Ag + Co Expansion head for expansion tools and expansion tool comprising said expansion head
RU2604373C2 (ru) * 2012-02-03 2016-12-10 Рехау Аг+Ко Экспандерная головка для расширительных инструментов и экспандерный инструмент, снабженный этой головкой
US9579708B2 (en) 2012-02-03 2017-02-28 Rehau Ag + Co Expansion head for expansion tools, expansion tool comprising said expansion head and use thereof
AU2013214495B2 (en) * 2012-02-03 2017-03-16 Rehau Ag + Co Expansion head for expansion tools and expansion tool comprising said expansion head
CN104093544B (zh) * 2012-02-03 2017-06-09 雷奥两合股份公司 扩张工具的扩张头、包括扩张头的扩张工具
AU2013214495C1 (en) * 2012-02-03 2017-08-03 Rehau Ag + Co Expansion head for expansion tools and expansion tool comprising said expansion head
AU2013214495A1 (en) * 2012-02-03 2014-06-12 Rehau Ag + Co Expansion head for expansion tools and expansion tool comprising said expansion head
CN104093506B (zh) * 2012-02-03 2018-09-25 雷奥两合股份公司 扩张工具的扩张头、包括扩张头的扩张工具及其使用方法
RU2636428C2 (ru) * 2012-11-19 2017-11-23 Рехау Аг + Ко Экспандерная головка для расширительных инструментов и включающий ее в себя экспандерный инструмент
US9914260B2 (en) 2014-06-20 2018-03-13 Milwaukee Electric Tool Corporation PEX expanding tool
CN104624825A (zh) * 2014-12-17 2015-05-20 南京航空航天大学 一种深海用埋弧焊直缝焊管扩径外扇形块及其表面防护方法
US9993961B2 (en) 2015-04-20 2018-06-12 Milwaukee Electric Tool Corporation PEX expanding tool
US11648727B2 (en) 2015-04-20 2023-05-16 Milwaukee Electric Tool Corporation PEX expanding tool
US9862137B2 (en) 2015-04-20 2018-01-09 Milwaukee Electric Tool Corporation PEX expanding tool
US10926451B2 (en) 2015-04-20 2021-02-23 Milwaukee Electric Tool Corporation PEX expanding tool
US10946576B2 (en) 2015-06-10 2021-03-16 Milwaukee Electric Tool Corporation PEX expanding tool
US10000007B2 (en) 2015-06-10 2018-06-19 Milwaukee Electric Tool Corporation PEX expanding tool
CN109531980A (zh) * 2018-12-29 2019-03-29 天津中财型材有限责任公司 一种塑料管材扩径变形工装
CN109531980B (zh) * 2018-12-29 2024-03-29 天津中财型材有限责任公司 一种塑料管材扩径变形工装
US11633775B2 (en) 2019-02-20 2023-04-25 Milwaukee Electric Tool Corporation PEX expansion tool
US11596999B2 (en) 2019-02-20 2023-03-07 Milwaukee Electric Tool Corporation PEX expansion tool
US11819902B2 (en) 2020-11-27 2023-11-21 Milwaukee Electric Tool Corporation Expansion tool
US11779990B2 (en) 2021-04-09 2023-10-10 Milwaukee Electric Tool Corporation Expansion tool
CN116037784A (zh) * 2023-02-20 2023-05-02 无锡市新峰管业有限公司 一种核电小口径管件扩口设备
CN116037784B (zh) * 2023-02-20 2023-11-10 无锡市新峰管业有限公司 一种核电小口径管件扩口设备

Also Published As

Publication number Publication date
EP0718057A3 (fr) 1996-07-10
DE4446506A1 (de) 1996-06-27

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