EP1281456A2 - Procédé de fabrication d'un raccord métallique en une pièce - Google Patents

Procédé de fabrication d'un raccord métallique en une pièce Download PDF

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Publication number
EP1281456A2
EP1281456A2 EP02090282A EP02090282A EP1281456A2 EP 1281456 A2 EP1281456 A2 EP 1281456A2 EP 02090282 A EP02090282 A EP 02090282A EP 02090282 A EP02090282 A EP 02090282A EP 1281456 A2 EP1281456 A2 EP 1281456A2
Authority
EP
European Patent Office
Prior art keywords
press fitting
piece
cut
fitting
section
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Withdrawn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
EP02090282A
Other languages
German (de)
English (en)
Other versions
EP1281456A3 (fr
Inventor
Bernd Sedlak
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.)
Mapress GmbH and Co KG
Original Assignee
Mapress GmbH and Co KG
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
Priority claimed from DE10233374A external-priority patent/DE10233374B4/de
Application filed by Mapress GmbH and Co KG filed Critical Mapress GmbH and Co KG
Publication of EP1281456A2 publication Critical patent/EP1281456A2/fr
Publication of EP1281456A3 publication Critical patent/EP1281456A3/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Withdrawn legal-status Critical Current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
    • B21D53/00—Making other particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/286—Making tube fittings for connecting pipes, e.g. U-pieces starting from sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/02—Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded

Definitions

  • the invention relates to a method for producing a one-piece press fitting Metal, according to the preamble of claim 1.
  • Press fittings for sanitary and heating made of carbon steel or high-alloy steel as well made of copper are known (see brochures: mapress mannesmann press fitting system, Sanitary heating product range, September 1998 and mapress KUPFER, 03/1999).
  • the press fitting which is preferably designed as a sleeve, elbow, T-piece or reducer is because of the high requirements with regard to the surface and the dimensional tolerance from a section of a specially manufactured pipe using won several forming steps.
  • the output pipe is predominantly a longitudinally welded pipe, the tight tolerances and a high surface quality having. In special cases, the output pipe can also be seamless, the Fluctuations in wall thickness are greater than with the longitudinally welded pipe.
  • the output pipe is cut into sections and the ends machined. Through the application several forming steps, e.g. B. pulling in, flanging, pressing becomes the final contour and dimension created. Since the starting product is already relatively high quality, too the press fitting made from it is relatively expensive.
  • the object of the invention is a method for producing a one-piece press fitting Specify from metal, which is more cost-effective while maintaining good compressibility compared to the known methods.
  • a positive fit is used during the forming process Contour, section pressed and the threaded section rolled.
  • the positive contour can be a square or a hexagon around a flat key to be able to hold on.
  • Another advantage of the procedure according to the invention is that the one-piece Press fitting is made from a seamless raw material. It is not a weld as a potential vulnerability. Typical weak points in a welded joint are the edge offset, the uneven or insufficient scraping the seam elevation and binding errors.
  • edge offset and the insufficient scraping of the seam elevation affect the plastic deformation of welded pipe sections to Pressfrtting.
  • Partial image a shows the starting belt 1, the thickness 2 of which corresponds approximately to the later thickness 3 of the body to be produced.
  • a round blank 4 is prepared from this starting strip 1 in a stamping process (partial image b ).
  • the round blank 4 is formed into a sheet metal body 5 in a deep-drawing process (partial image c ). If necessary, the often uneven end face area 6 is straightened by a cut-off cut.
  • the bead area 7 is molded on the closed side of the sheet metal body 5 (partial picture d ).
  • Partial image e shows the molding of a bead 8 in the middle area and the molding of the second transition area 7 'at the open end.
  • an opening 9 is punched out at the closed end.
  • the heat treatment required at the end of the cold forming is not shown, usually a recrystallizing annealing in order to eliminate the internal stresses.
  • Figure 2a , b shows a one-piece special press fitting, here a transition piece 10 with an external thread.
  • this transition piece 10 is produced in one piece from a flat sheet metal piece using deep-drawing technology and further forming steps.
  • a section 12 having a form-fitting contour, here in the form of an internal hexagon, is molded on in addition to the threaded section 11.
  • the right area of the transition piece 10 is designed in a known manner as a compressible connecting element 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP02090282A 2001-08-03 2002-07-26 Procédé de fabrication d'un raccord métallique en une pièce Withdrawn EP1281456A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10138444 2001-08-03
DE10138444 2001-08-03
DE10233374 2002-07-18
DE10233374A DE10233374B4 (de) 2001-08-03 2002-07-18 Verfahren zur Herstellung eines einteiligen Pressfittings aus Metall

Publications (2)

Publication Number Publication Date
EP1281456A2 true EP1281456A2 (fr) 2003-02-05
EP1281456A3 EP1281456A3 (fr) 2004-05-12

Family

ID=26009882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090282A Withdrawn EP1281456A3 (fr) 2001-08-03 2002-07-26 Procédé de fabrication d'un raccord métallique en une pièce

Country Status (1)

Country Link
EP (1) EP1281456A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1707861A1 (fr) * 2005-04-01 2006-10-04 VIEGA GmbH & Co. KG. Raccord et son procédé de fabrication
DE202007010417U1 (de) * 2007-07-26 2008-12-04 Rehau Ag + Co Vorrichtung zur Aufnahme einer Hydraulikflüssigkeit innerhalb eines Kraftfahrzeug-Hydraliksystems

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1850049A (en) * 1932-01-29 1932-03-15 Jr Edward S Cornell Pipe fitting and method of making the same
US5090743A (en) * 1989-06-12 1992-02-25 Mannesmann Aktiengesellschaft Compressible fitting and associated method
US5761949A (en) * 1997-02-19 1998-06-09 Trans-Matic Manufacturing Company Deep-drawn stamping process including side piercing
EP1070896A2 (fr) * 1999-07-22 2001-01-24 Mapress GmbH & Co. KG Procédé de fabrication d'un élément d emmanchement par pressage
DE19948142A1 (de) * 1999-09-28 2001-04-19 Mapress Gmbh & Co Kg Verfahren zur Herstellung eines Preßfittings
US6253594B1 (en) * 2000-04-14 2001-07-03 Trans-Matic Manufacturing Company Method of producing a stamped item

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1850049A (en) * 1932-01-29 1932-03-15 Jr Edward S Cornell Pipe fitting and method of making the same
US5090743A (en) * 1989-06-12 1992-02-25 Mannesmann Aktiengesellschaft Compressible fitting and associated method
US5761949A (en) * 1997-02-19 1998-06-09 Trans-Matic Manufacturing Company Deep-drawn stamping process including side piercing
EP1070896A2 (fr) * 1999-07-22 2001-01-24 Mapress GmbH & Co. KG Procédé de fabrication d'un élément d emmanchement par pressage
DE19948142A1 (de) * 1999-09-28 2001-04-19 Mapress Gmbh & Co Kg Verfahren zur Herstellung eines Preßfittings
US6253594B1 (en) * 2000-04-14 2001-07-03 Trans-Matic Manufacturing Company Method of producing a stamped item

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7658419B2 (en) 2005-01-04 2010-02-09 Viega Gmbh & Co. Kg Fitting and method for manufacturing a fitting
EP1707861A1 (fr) * 2005-04-01 2006-10-04 VIEGA GmbH & Co. KG. Raccord et son procédé de fabrication
US7587924B2 (en) 2005-04-01 2009-09-15 Viega Gmbh & Co., Kg Fitting and method for manufacturing a fitting
DE202007010417U1 (de) * 2007-07-26 2008-12-04 Rehau Ag + Co Vorrichtung zur Aufnahme einer Hydraulikflüssigkeit innerhalb eines Kraftfahrzeug-Hydraliksystems

Also Published As

Publication number Publication date
EP1281456A3 (fr) 2004-05-12

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