DK0619152T3 - Expansion head for hollow workpiece expansion tool - Google Patents

Expansion head for hollow workpiece expansion tool

Info

Publication number
DK0619152T3
DK0619152T3 DK93105591.7T DK93105591T DK0619152T3 DK 0619152 T3 DK0619152 T3 DK 0619152T3 DK 93105591 T DK93105591 T DK 93105591T DK 0619152 T3 DK0619152 T3 DK 0619152T3
Authority
DK
Denmark
Prior art keywords
flange
sectors
expansion
guide
internal
Prior art date
Application number
DK93105591.7T
Other languages
Danish (da)
Inventor
Karl-Heinz Velte
Original Assignee
Rothenberger Werkzeuge 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 Werkzeuge Ag filed Critical Rothenberger Werkzeuge Ag
Application granted granted Critical
Publication of DK0619152T3 publication Critical patent/DK0619152T3/en

Links

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
    • B21D41/026—Enlarging by means of mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Earth Drilling (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

On an expansion head (1) for expander tools for hollow workpieces, a cup (2) with a guide flange (3) pointing radially inwards and with a set of expansion jaws (4) in the form of sectors, each of which is guided individually so as to be radially moveable on the guide flange (3) by means of an internal-flange sector (5) and of an external-flange sector (6) and of a radial groove (7) formed between these. In order to be able to increase the radial travel of the expansion jaws without loss of the guiding properties, the external-flange sectors (6) have essentially at least the same diameter as the internal-flange sectors (5) and both the internal-flange sectors (5) and the external-flange sectors (6) each have a hole (8 and 9 respectively), in each of which one end of a guide pin (10) is accommodated. Arranged in the guide flange (3) are radial guide grooves for the acceptance and movement of in each case one of the guide pins (10). Annular tension springs (15, 16) for resetting the expansion jaws are furthermore arranged both on the internal-flange sectors (5) and on the external-flange sectors (6). <IMAGE>
DK93105591.7T 1992-01-29 1993-04-05 Expansion head for hollow workpiece expansion tool DK0619152T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4202348A DE4202348C1 (en) 1992-01-29 1992-01-29 Tube end expansion tool - has holding drillings for guide pins at inner and outer flange sectors
EP93105591A EP0619152B1 (en) 1992-01-29 1993-04-05 Expansion head for expander for hollow workpieces

Publications (1)

Publication Number Publication Date
DK0619152T3 true DK0619152T3 (en) 1998-04-06

Family

ID=25911322

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93105591.7T DK0619152T3 (en) 1992-01-29 1993-04-05 Expansion head for hollow workpiece expansion tool

Country Status (5)

Country Link
EP (1) EP0619152B1 (en)
AT (1) ATE156732T1 (en)
DE (1) DE4202348C1 (en)
DK (1) DK0619152T3 (en)
ES (1) ES2106912T3 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339993C1 (en) * 1993-11-24 1995-01-05 Rothenberger Werkzeuge Masch Apparatus for expanding hollow bodies
DE4446506A1 (en) * 1994-12-25 1996-06-27 Rothenberger Werkzeuge Masch Device for expanding hollow bodies
DE19730054C1 (en) * 1997-07-14 1999-03-18 Eckhard Wolter Expansion head with housing for screwing onto expander tongs
DE19924695C2 (en) * 1999-05-28 2001-05-10 Rothenberger Werkzeuge Ag Expansion tool for hollow bodies and process for the production thereof
DE19963885C1 (en) * 1999-12-30 2001-05-03 Rehau Ag & Co Expansion of flexible plastic pipe end, to enable fittings to be mounted, has spreader with internal sliding cone to fix the pipe to be drawn over expansion mandrel to increase its diameter
DE102007007294B3 (en) * 2007-02-14 2008-07-10 Rothenberger Ag Drive unit with coupling for tool heads has housing with chamber for accumulators in end remote from coupling with total voltage of at least 12 Volts; chamber covered by removable cap has hydraulic pump with piston with transverse axis
DE202010004948U1 (en) 2010-04-13 2011-09-01 Rehau Ag + Co. Expander head for hollow workpieces with guided segments
DE102010035222B4 (en) * 2010-08-24 2013-04-18 Rothenberger Ag Coupling for the axial connection of a drive unit with an expander head
DE102010035221B4 (en) * 2010-08-24 2013-04-18 Rothenberger Ag Coupling for the axial connection of a drive unit with expander head
US9943949B2 (en) 2010-08-24 2018-04-17 Rothenberger Ag Coupling parts for connecting a driving device to an expander head
DE102012100894A1 (en) 2012-02-03 2013-08-08 Rehau Ag + Co Expander head for expander tools, this comprehensive expansion tool and their use
DE202012104450U1 (en) 2012-11-19 2014-02-25 Rehau Ag + Co Expansion head for expansion tools and this comprehensive expansion tool
CN110773651A (en) * 2019-11-05 2020-02-11 武汉威研工程技术有限公司 Portable self-centering reamer
DE202019107067U1 (en) * 2019-12-18 2021-03-19 Rehau Ag + Co Expansion head for expansion tools as well as this comprehensive expansion tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB866994A (en) * 1957-11-13 1961-05-03 Wlodimierz Rast Improvements in or relating to an expanding tool for pipes
US3550424A (en) * 1968-06-12 1970-12-29 Wlodzimierz Rast Tube expander
AU8441475A (en) * 1974-09-13 1977-03-03 Ridge Tool Co. Jaw construction for expanding tools
DE2459506B2 (en) * 1974-09-13 1976-07-22 Rast Patent Manufacturers Pty. Ltd., North Plympton, Südaustralien (Australien) JAW ARRANGEMENT FOR EXPANSION TOOLS
FR2486834A1 (en) * 1980-07-18 1982-01-22 Unicum Sa EXPANSION HEAD FOR AN APPARATUS FOR EXHAUSTING OR EXTENDING TUBES OR THE LIKE
DE4104205C1 (en) * 1991-02-12 1992-10-08 Rothenberger Werkzeuge-Maschinen Gmbh, 6233 Kelkheim, De

Also Published As

Publication number Publication date
EP0619152B1 (en) 1997-08-13
DE4202348C1 (en) 1993-06-09
ES2106912T3 (en) 1997-11-16
ATE156732T1 (en) 1997-08-15
EP0619152A1 (en) 1994-10-12

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