EP0872294A1 - Stanze zur Herstellung eines Loches in einer Metallplatte - Google Patents

Stanze zur Herstellung eines Loches in einer Metallplatte Download PDF

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Publication number
EP0872294A1
EP0872294A1 EP98400115A EP98400115A EP0872294A1 EP 0872294 A1 EP0872294 A1 EP 0872294A1 EP 98400115 A EP98400115 A EP 98400115A EP 98400115 A EP98400115 A EP 98400115A EP 0872294 A1 EP0872294 A1 EP 0872294A1
Authority
EP
European Patent Office
Prior art keywords
punch
hole
calibration
ramps
wall
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.)
Ceased
Application number
EP98400115A
Other languages
English (en)
French (fr)
Inventor
Raymond Gilbert Marcel Federspiel
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.)
Faurecia Sieges dAutomobile SAS
Original Assignee
Compagnie Europeenne de Sieges pour Automobiles CESA
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 Compagnie Europeenne de Sieges pour Automobiles CESA filed Critical Compagnie Europeenne de Sieges pour Automobiles CESA
Publication of EP0872294A1 publication Critical patent/EP0872294A1/de
Ceased 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Definitions

  • the present invention relates to a punch for the formation of a hole in a metal wall.
  • Such a frame is usually provided with several holes intended for example for fixing axes seat adjustment mechanisms or the attachment of suspension plies for seat pads.
  • the edge of a hole obtained by punching presents a deformation in the bowl which is all the more pronounced and annoying that the diameter of the hole is important.
  • the object of the invention is in particular to allow the hole formation in metallic tubular elements of various sections, using simple means allowing to minimize the deformations of these tubular elements.
  • the invention relates to a punch of the aforementioned type, characterized in that the part of penetration has a general shape of a flat blade, substantially parallel to a longitudinal axis of the punch, delimited by a pointed outline forming a corner dihedral substantially perpendicular to the longitudinal axis of the punch, the penetration part being connected to the part calibration by a connecting part comprising two ramps of opposite inclinations, the normal at each point of each ramp being substantially parallel to a plane parallel to the longitudinal axis and to the edge.
  • the invention also relates to the use of the punch as defined above to form a hole in a metallic tubular element, in particular a tubular metal frame for vehicle seat automobile.
  • FIG. 1 a punch 10 according to a first embodiment of the invention, intended to be mounted on a punching device classic.
  • the punch 10 has a shape general elongated X axis.
  • the punch 10 is intended to form a hole T in particular in a metallic tubular element 12 (shown in Figures 2 to 8), for example an element of armature for motor vehicle seat.
  • the element tubular 12 has a substantially rectangular section.
  • the punch 10 is connected to the device for punching in a manner known per se, by means of a head hanging 14.
  • the punch 10 includes a part 16 of penetration into the wall defining the tubular element 12 and a part for calibrating the hole T, for example of substantially polygonal section, in particular square, as this is illustrated in Figure 1.
  • the penetration part 16 has a general shape flat blade, substantially parallel to the X axis. part 16 is delimited by a pointed outline (in V) forming an edge dihedral 20 substantially perpendicular to the X axis.
  • the penetration part 16 is connected to the part 18 by a connecting part 22 comprising two ramps 24, 26 of opposite inclinations. Normal in each point of each ramp is substantially parallel to a plane parallel to the longitudinal axis X and to the edge 20.
  • the ramps 24, 26 are delimited by intersecting oblique planes following a line substantially orthogonal to the edge 20 of the dihedral.
  • the ramps can be delimited by portions of circular base cylinders tangent to the faces of the penetration part 16.
  • the ramps 24, 26 are offset axially with respect to each other.
  • the blade 16 When entering the wall of the tubular element 12, the blade 16 forms a slot 28 of substantially contour rectangular. The short sides of the slot 18 are extended by two metal shavings 30.32, detached partially by the blade 16, connected to the wall of the tubular element 12 (see in particular Figure 4).
  • a first ramp 24 comes into contact with a first large side of the slot 28 (see FIG. 5), so as to form a first half of the hole T (see figure 6).
  • the ramp 24 partially detaches a chip 34 which remains connected to the wall of the tubular element 12.
  • the ramp 26 partially detaches a chip 36 which remains connected to the wall of the tubular element 12.
  • the ramming stroke of the punch 10 in the wall of the tubular element 12 ends with the setting contact of the calibration part 18 with the edge of the hole T.
  • hole T by forming a slot 28 initial then by shearing of two parts of the wall delimiting the two long sides of the slot 28 by means of the ramps 24, 26 makes it possible to reduce the forces exerted on the tubular element 12 to be drilled and thus to minimize the deformations of this element.
  • the invention makes it possible to form a hole in a metal wall not necessarily delimiting a tubular element, for example a profile wall of open outline.
  • the punch according to the invention makes it possible to form very varied contour holes other than rectangular.
  • Figure 9 a punch 10A, according to a second embodiment of the invention, in which the calibration part 18 has a circular cross section, so that form circular contour holes.
  • chips or knockouts formed when punching a tubular element using the punch according to the invention remain attached to this element tubular, so that the undesirable fall of these chips or knockouts inside the element tubular.
  • the punch according to the invention is simple, of low cost, and allows punching in one operation, by means of this single punch, a wall metallic, without the punching device have to exert a significant force on the punch and without significantly deform the metal wall in the vicinity of the hole formed by the punch.
EP98400115A 1997-04-16 1998-01-21 Stanze zur Herstellung eines Loches in einer Metallplatte Ceased EP0872294A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704696A FR2762242B1 (fr) 1997-04-16 1997-04-16 Poincon pour la formation d'un trou dans une paroi metallique
FR9704696 1997-04-16

Publications (1)

Publication Number Publication Date
EP0872294A1 true EP0872294A1 (de) 1998-10-21

Family

ID=9505990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400115A Ceased EP0872294A1 (de) 1997-04-16 1998-01-21 Stanze zur Herstellung eines Loches in einer Metallplatte

Country Status (2)

Country Link
EP (1) EP0872294A1 (de)
FR (1) FR2762242B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8162046B2 (en) 2010-08-17 2012-04-24 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
WO2015021962A1 (de) * 2013-08-13 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Hydraulisches abstützelement
CN110421059A (zh) * 2019-07-31 2019-11-08 潍坊东鑫智能科技有限公司 一种数控围字机冲孔装置
EP3837161A4 (de) * 2018-08-14 2022-09-07 Halkey-Roberts Corporation Steckstift mit grossem durchmesser für einen gasgenerator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653664A (en) * 1951-06-27 1953-09-29 Configured Tube Products Compa Method of and means for forming an elongated opening in a pipe or the like
FR2103426A1 (de) * 1970-08-20 1972-04-14 Hudson Leslie
DE2143224A1 (de) * 1971-02-15 1972-08-24 Bocceda, Franco, Mailand (Italien) Vorrichtung zur Erzeugung von Bohrungen in Leitungen aus Kupfer , Messing, Kunststoff, wie Polyvinylchlorid, u.dgl., für Flüssigkeiten, Luft und Gase
EP0533574A1 (de) * 1991-09-19 1993-03-24 Valeo Thermique Moteur Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653664A (en) * 1951-06-27 1953-09-29 Configured Tube Products Compa Method of and means for forming an elongated opening in a pipe or the like
FR2103426A1 (de) * 1970-08-20 1972-04-14 Hudson Leslie
DE2143224A1 (de) * 1971-02-15 1972-08-24 Bocceda, Franco, Mailand (Italien) Vorrichtung zur Erzeugung von Bohrungen in Leitungen aus Kupfer , Messing, Kunststoff, wie Polyvinylchlorid, u.dgl., für Flüssigkeiten, Luft und Gase
EP0533574A1 (de) * 1991-09-19 1993-03-24 Valeo Thermique Moteur Verfahren zum Stanzen einer Öffnung in einer rohrförmigen Wand und damit hergestellte rohrförmige Wand

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8162046B2 (en) 2010-08-17 2012-04-24 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8167031B2 (en) 2010-08-17 2012-05-01 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8443879B2 (en) 2010-08-17 2013-05-21 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
US8443880B1 (en) 2010-08-17 2013-05-21 T-3 Property Holdings, Inc. Blowout preventer with shearing blades
WO2015021962A1 (de) * 2013-08-13 2015-02-19 Schaeffler Technologies Gmbh & Co. Kg Hydraulisches abstützelement
EP3837161A4 (de) * 2018-08-14 2022-09-07 Halkey-Roberts Corporation Steckstift mit grossem durchmesser für einen gasgenerator
CN110421059A (zh) * 2019-07-31 2019-11-08 潍坊东鑫智能科技有限公司 一种数控围字机冲孔装置

Also Published As

Publication number Publication date
FR2762242B1 (fr) 1999-07-16
FR2762242A1 (fr) 1998-10-23

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