EP1017517B1 - Verfahren zum stanzen und stanzvorrichtung - Google Patents

Verfahren zum stanzen und stanzvorrichtung Download PDF

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Publication number
EP1017517B1
EP1017517B1 EP98928737A EP98928737A EP1017517B1 EP 1017517 B1 EP1017517 B1 EP 1017517B1 EP 98928737 A EP98928737 A EP 98928737A EP 98928737 A EP98928737 A EP 98928737A EP 1017517 B1 EP1017517 B1 EP 1017517B1
Authority
EP
European Patent Office
Prior art keywords
punch
holes
wall
die
punched
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.)
Expired - Lifetime
Application number
EP98928737A
Other languages
English (en)
French (fr)
Other versions
EP1017517A1 (de
Inventor
Pervi Carlsson
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.)
PM Teknik HB
Original Assignee
PM Teknik HB
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 PM Teknik HB filed Critical PM Teknik HB
Publication of EP1017517A1 publication Critical patent/EP1017517A1/de
Application granted granted Critical
Publication of EP1017517B1 publication Critical patent/EP1017517B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14—Punching tools; Punching dies

Definitions

  • the present invention relates to a method of the kind defined in the preamble of Claim 1 and in the document DE-A-2 024 620.
  • Holes can normally be punched in a workpiece with no difficulty, provided that the holes shall be punched through a part of the workpiece where both sides of said are freely accessible from outside the workpiece, for instance when holes are to be punched in sheet material.
  • the sheet, plate or strip is then laid against a fixed support surface that includes punch cavities and a punch-carrying tool is positioned with the punches opposite the punch cavities and pressed down against the sheet and therewith punch-out the holes.
  • the object of the present invention is to endeavour to overcome this problem and to provide a method which will enable holes to be punched in two-wall workpieces regardless of the material from which they are made.
  • the insertion of a die between the two walls of the workpiece provides an anvil means which fills out the space between said walls and provides support for the wall as it is met by the punch.
  • the anvil means enables the hole or holes to be punched without deforming the wall.
  • the method can be applied for punching-out a single hole, it is primarily advantageous for use when punching-out a plurality of holes simultaneously in the wall of the workpiece. This constitutes a preferred embodiment of the inventive method.
  • punching of the holes is carried out in two stages, wherein the holes are punched in the second wall after having removed the die.
  • the punches move down through the holes made in the first wall.
  • a workpiece 1 in the form of a two-wall elongated strip having a bottom wall 2 and a top wall 3 in which respective rows of holes 10, 4 have been punched.
  • the illustrated workpiece may be made of aluminium, for instance.
  • Fig. 2 illustrates the difficulty of punching holes in such a workpiece. If the workpiece is simply clamped to the work table of the punching machine, the upper wall 3 will not be supported and the punch 5 will deform the wall 3 as it punches holes therein. The disc punched from the workpiece will remain on the bottom wall and present an obstacle to continued punching.
  • Figs. 3 and 5 illustrate the manner in which holes are punched in the upper wall 3 of the workpiece 1 in accordance with the invention.
  • a die 8 is inserted in the space between the two walls 2, 3, so as to support the upper wall 3.
  • the upper side of the die 8 is provided with punch cavities 7a, 7b etc., and the die is positioned so that the punch cavities are located centrally of respective punches 5a, 5b etc.
  • the die thus functions as an effective anvil means, therewith enabling the holes 4 to be punched readily in the upper wall 3.
  • the length of stroke of the punches must be limited in the first punching operation, so that the discs punched from the workpiece will not be pressed firmly into the die cavities and become fixed therein.
  • the discs punched from the holes 7a, 7b etc. are removed from the die 8, for instance with the aid of compressed air, and the die 8 then inserted into the new workpiece.
  • Withdrawal and insertion of the die 8 may, of course, be controlled automatically or effected purely manually.
  • a punch die that is common for all holes to be punched in the upper wall 3. It is also conceivable, however, to use two (or more) shorter units and to insert a die into the workpiece from each direction.
  • the invention is primarily conceived for punching holes in a workpiece of the illustrated appearance, it will be apparent that the invention can also be applied with workpieces that have lateral extensions in two directions where the holes are distributed over one surface instead of along a strip.
  • the illustrated example can be readily modified for use when the two walls are angled to one another, i.e. not parallel. Neither is the inventive method restricted to square profiles, but can also be applied to U-profiles or to a double-wall workpiece in which the two walls are joined together solely at certain places.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)

Claims (3)

  1. Verfahren zum Stanzen von einem oder mehreren Löchern (4, 10) in ein zweiwandiges Werkstück (1), bei dem die Wände (2, 3) voneinander beabatandet sind, wobei das Loch/die Löcher durch die erste und zweite Wand gestanzt wird/werden, das Folgendes aufweist: das Einschieben einer Schablone (8), die mit Ausstanzungen (7, 7a, 7b) versehen ist und deren Stärke dem Wandabstand entspricht, zwischen die Wände; sowie das Aktivieren eines Stanzwerkzeugs, das einen oder mehrere Lochstempel (5, 5a, 5b) aufnimmt, um damit ein Loch oder Löcher in die erste Wand zu stanzen, nachdem die Schablone in eine Position bewegt wurde, in der eine Ausstanzung mittig gegenüber ihrem entsprechenden Lochstempel angeordnet ist, wobei der Durchmesser der Ausstanzung dem Durchmesser des entsprechendes Lochstempels entspricht, so dass jedes Loch (4) gebildet wird, indem eine Scheibe aus der ersten Wand (3) herausgeschnitten wird und diese Scheibe in der Ausstanzung aufgenommen wird, und dadurch gekennzeichnet, dass nach dem Ausstanzen des Lochs/der Löcher in der ersten Wand die Schablone (8) aus dem Zwischenraum entfernt wird und das Loch/die Löcher (10) in der zweiten Wand (2) in einem zweiten Stanzvorgang gestanzt werden, bei dem der/die Lochstempel sich durch das in die erste Wand (3) gestanzte Loch/die Löcher (4) bewegt/bewegen.
  2. Verfahren nach Anspruch 1, bei dem eine Vielzahl von Löchern (4) gleichzeitig in der ersten Wand (3) gestanzt wird, wobei die Schablone (8) eine Vielzahl von Ausstanzungen (7a, 7b) aufweist, und das Stempelwerkzeug eine entsprechende Anzahl von Lochstempeln aufweist.
  3. Verfahren nach Anspruch 1 oder 2, bei dem das Werkstück (1) ein verlängerter Metallstreifen mit einem kastenförmigen Querschnitt ist, wobei die Schablone (8) in Längsrichtung des Streifens in das kastenförmige Profil eingeschoben wird.
EP98928737A 1997-06-05 1998-06-02 Verfahren zum stanzen und stanzvorrichtung Expired - Lifetime EP1017517B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9702153 1997-06-05
SE9702153A SE512912C2 (sv) 1997-06-05 1997-06-05 Förfarande för stansning och stansdyna
PCT/SE1998/001044 WO1998055244A1 (en) 1997-06-05 1998-06-02 A method for punching and a punch die

Publications (2)

Publication Number Publication Date
EP1017517A1 EP1017517A1 (de) 2000-07-12
EP1017517B1 true EP1017517B1 (de) 2003-02-26

Family

ID=20407268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98928737A Expired - Lifetime EP1017517B1 (de) 1997-06-05 1998-06-02 Verfahren zum stanzen und stanzvorrichtung

Country Status (7)

Country Link
EP (1) EP1017517B1 (de)
AT (1) ATE233138T1 (de)
AU (1) AU8046398A (de)
DE (1) DE69811697T2 (de)
DK (1) DK1017517T3 (de)
SE (1) SE512912C2 (de)
WO (1) WO1998055244A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013003118B4 (de) * 2013-02-25 2015-03-26 Jenoptik Automatisierungstechnik Gmbh Verfahren zum Entsorgen von einem bei einem Lochungsvorgang eines Hohlprofils enstehenden Butzens

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
YU33025B (en) * 1969-10-07 1976-03-31 J Milek Uredaj za stancanje perforacija na cijevima raznih duzina i oblika
GB1329095A (en) * 1970-08-20 1973-09-05 Hdson L G Method and apparatus for perforating tubes
US4679289A (en) * 1986-08-15 1987-07-14 Brazeway, Inc. Method and apparatus for forming intruded branch attachment structures in tubing
IE60206B1 (en) * 1987-12-04 1994-06-15 Higgins Joseph Augustine "A method and apparatus for punching"
DE4334203C2 (de) * 1992-10-20 2003-08-07 Karl-Heinz Staffa Werkzeug zum Einbringen von Durchzügen in ein Sammelrohr eines Wärmetauschers

Also Published As

Publication number Publication date
DK1017517T3 (da) 2003-06-10
DE69811697T2 (de) 2003-10-23
EP1017517A1 (de) 2000-07-12
WO1998055244A1 (en) 1998-12-10
SE512912C2 (sv) 2000-06-05
ATE233138T1 (de) 2003-03-15
DE69811697D1 (de) 2003-04-03
SE9702153L (sv) 1998-12-06
SE9702153D0 (sv) 1997-06-05
AU8046398A (en) 1998-12-21

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