EP1733819A1 - Stanzwerkzeug zum Stanzen von Blechmaterial - Google Patents

Stanzwerkzeug zum Stanzen von Blechmaterial Download PDF

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Publication number
EP1733819A1
EP1733819A1 EP06300351A EP06300351A EP1733819A1 EP 1733819 A1 EP1733819 A1 EP 1733819A1 EP 06300351 A EP06300351 A EP 06300351A EP 06300351 A EP06300351 A EP 06300351A EP 1733819 A1 EP1733819 A1 EP 1733819A1
Authority
EP
European Patent Office
Prior art keywords
teeth
punch
cutting
zones
tapping
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.)
Granted
Application number
EP06300351A
Other languages
English (en)
French (fr)
Other versions
EP1733819B1 (de
Inventor
Bruno Racodon
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.)
Racodon Outillage
Original Assignee
Racodon Outillage
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 Racodon Outillage filed Critical Racodon Outillage
Publication of EP1733819A1 publication Critical patent/EP1733819A1/de
Application granted granted Critical
Publication of EP1733819B1 publication Critical patent/EP1733819B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D28/34—Perforating tools; Die holders
    • B21D28/343—Draw punches

Definitions

  • the invention relates to the technical sector punching tools and cutting metal sheet metal materials or plates for the conformation of holes.
  • FIGS. 1 and 2 show the known prior art of the applicant.
  • FIG. 1 shows a punch (1) with two teeth (1a) disposed at the end of the cylindrical body (1b) of the punch considered on its peripheral annular periphery according to the teaching of the patent.
  • FR 2461536 .
  • the teeth are thus shaped with one side a ramp (1c) projecting to end to form the tooth and a vertical wall (1d) vertical junction.
  • Such a punch makes it possible to cut a piece of sheet-like material into two chips. The problem remains, however, in the efforts made to ensure the cuts, and also and especially the problem of the removal of the resulting chips, and the instability of the punch.
  • FIG. 2 It has been proposed according to the prior art and FIG. 2 in particular a punch (2) including three teeth (2a) arranged at 120 ° on the annular peripheral periphery of the tool, with ramp shapes of the same type as the previous case.
  • Such a punch has drawbacks, first of all in its cost of manufacturing and machining which is high, and then and especially in the evacuation of the three resulting chips which is often difficult.
  • the cutting punch of metal material of the sheet type is remarkable in that it is designed and arranged in its front useful part for cutting with profiled projections in the form of teeth arranged transversely in the thickness of the body of the punch and for defining four areas of chips, and in that these transverse and therefore non-radial teeth are arranged parallel and on both sides of the thread by coming substantially tangent with the latter, and in that the four chip cutting zones are arranged parallel and in opposition two by two of the same profile two by two.
  • the punch is remarkable in that the transverse teeth define on their outer side connecting areas with the peripheral periphery of the body of the punches, and in that between the two teeth, is defined a deep curvilinear connection forming a cradle whose bottom comes substantially near or at the level of the last thread of the internal thread of the punch, and in that zones are defined by the cradle shapes situated between the teeth and the internal thread, and in that other zones are defined from the outer flanks of the teeth, and in that the four zones are independent and allow cutting of the worked part into four separate chips.
  • the punch (10) illustrated in its three variants in Figures 3 and 7 has a particular known configuration present in both cases.
  • This punch (10) comprises a cylindrical body (10a) with in its rear part a knurling (10b) to facilitate handling and an internal tapping (10c) for receiving a tool handle.
  • the punch (10) is designed and arranged in its front useful part for cutting with protrusions (10d) profiled in the form of teeth arranged transversely in the thickness of the body of the punch and to delimit four zones of chips (C1-C2-C3-C4).
  • These transverse teeth (10d) and therefore non-radial are located parallel and on both sides of the thread (10c) coming substantially tangent with it.
  • the end (10d1) of the teeth can be chamfered or beveled to facilitate penetration into the material and cutting.
  • These transverse teeth (10d) show on their outer side (10d2) connection areas with the periphery of the body of the punches.
  • connection (10e) deep curvilinear cradle whose bottom comes substantially near or at the last thread of the inner thread of the punch.
  • the bottom of the cradle (10e) is level or slightly offset more or less from the end connecting the outer flanks of the teeth with the body of the punch.
  • the punch head has been further improved to optimize the cutting force.
  • the supplements made to the implementation of the solution provided in FIG. 3 are essentially located on the transverse teeth (10d) and the outer flanks.
  • the upper chamfered portion of each tooth (10d) is set in a particular manner by being non-rectilinear and defining a V-shape (10d2) open at an amplitude of 170 to 175 ° with the bottom V in the central part of the tooth. This is achieved by a specific machining.
  • the clearances (10m) from the tapping can even lead into the chamfered part.
  • clearance angles (10n) are established on the outer flanks of the teeth (10d) to provide a dish configuration and facilitate cutting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
EP20060300351 2005-06-16 2006-04-11 Stanzwerkzeug zum Stanzen von Blechmaterial Expired - Fee Related EP1733819B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0551642A FR2887173B1 (fr) 2005-06-16 2005-06-16 Poincon de decoupe de matiere metallique du type tole

Publications (2)

Publication Number Publication Date
EP1733819A1 true EP1733819A1 (de) 2006-12-20
EP1733819B1 EP1733819B1 (de) 2008-03-19

Family

ID=35432001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060300351 Expired - Fee Related EP1733819B1 (de) 2005-06-16 2006-04-11 Stanzwerkzeug zum Stanzen von Blechmaterial

Country Status (3)

Country Link
EP (1) EP1733819B1 (de)
DE (1) DE602006000738T2 (de)
FR (1) FR2887173B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD736280S1 (en) 2012-04-11 2015-08-11 Milwaukee Electric Tool Corporation Die

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2237069A (en) * 1940-08-16 1941-04-01 Gustaf O Christenson Draw punch
FR2461536A1 (fr) * 1979-07-23 1981-02-06 Greenlee Bros & Co Poincon de decoupage
FR2472455A1 (fr) * 1979-11-23 1981-07-03 Grangier Hubert Machine pour la decoupe de materiaux rigides en feuilles
US4543722A (en) * 1983-01-27 1985-10-01 Ex-Cell-O Corporation Slug-splitting punch
US5727436A (en) * 1995-03-27 1998-03-17 Ideal Industries, Inc. Draw punch having relieved helical working faces
US6116133A (en) * 1998-04-07 2000-09-12 Nishida; Rikio Puncher head and puncher
EP1340559A2 (de) * 2002-02-28 2003-09-03 Greenlee Textron Inc. Stanzvorrichtung mit Lochpositionsbestimmung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2237069A (en) * 1940-08-16 1941-04-01 Gustaf O Christenson Draw punch
FR2461536A1 (fr) * 1979-07-23 1981-02-06 Greenlee Bros & Co Poincon de decoupage
FR2472455A1 (fr) * 1979-11-23 1981-07-03 Grangier Hubert Machine pour la decoupe de materiaux rigides en feuilles
US4543722A (en) * 1983-01-27 1985-10-01 Ex-Cell-O Corporation Slug-splitting punch
US5727436A (en) * 1995-03-27 1998-03-17 Ideal Industries, Inc. Draw punch having relieved helical working faces
US6116133A (en) * 1998-04-07 2000-09-12 Nishida; Rikio Puncher head and puncher
EP1340559A2 (de) * 2002-02-28 2003-09-03 Greenlee Textron Inc. Stanzvorrichtung mit Lochpositionsbestimmung

Also Published As

Publication number Publication date
EP1733819B1 (de) 2008-03-19
DE602006000738D1 (de) 2008-04-30
FR2887173B1 (fr) 2007-09-14
FR2887173A1 (fr) 2006-12-22
DE602006000738T2 (de) 2009-04-23

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