EP0667217A1 - Outil de coupe rotatif - Google Patents

Outil de coupe rotatif Download PDF

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Publication number
EP0667217A1
EP0667217A1 EP95100946A EP95100946A EP0667217A1 EP 0667217 A1 EP0667217 A1 EP 0667217A1 EP 95100946 A EP95100946 A EP 95100946A EP 95100946 A EP95100946 A EP 95100946A EP 0667217 A1 EP0667217 A1 EP 0667217A1
Authority
EP
European Patent Office
Prior art keywords
cutting
tool
cutting tool
rotary cutting
hard metal
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Withdrawn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
EP95100946A
Other languages
German (de)
English (en)
Inventor
Johannes Hendrikus Maartens
Werner Weith
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.)
MAARTENS KLEINMETAAL B.V.
Widia GmbH
Original Assignee
Krupp Widia GmbH
Widia GmbH
Maartens Kleinmetaal BV
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 Krupp Widia GmbH, Widia GmbH, Maartens Kleinmetaal BV filed Critical Krupp Widia GmbH
Publication of EP0667217A1 publication Critical patent/EP0667217A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/384—Cutting-out; Stamping-out using rotating drums
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4436—Materials or surface treatments therefore
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures

Definitions

  • the invention relates to a rotary cutting tool with a cylindrical tool holder and at least one cutting tool arranged on the tool cylinder jacket for cutting workpieces.
  • Rotary cutting tools of this type are used in particular for punching out closed contours from plastic, paper or so-called multi-layer composite foils, of which in particular for punching out hygiene wipes, bandages, inserts etc.
  • the separation principle is essentially based on the fact that a cutting roller with the tool or tools rolls on an anvil drum, between which the films or individual pieces are guided. Because the cutting tools protrude from the lateral unrolling guides of the cutting roller and anvil, the material is first compressed and finally torn apart after the yield point has been exceeded.
  • the shape of the cutting tools is known in principle from the prior art.
  • Cutting tools are understood to mean in particular knife cutting tools, but also bite cutting, in which two wedge-shaped cutting edges are moved towards one another.
  • the cutting tools can also be used to scratch any cutting contour in order to create a predetermined breaking point.
  • Rotary cutting tools made from a one-piece steel body are known from the prior art, which do not always give satisfactory results in terms of hardness, toughness and abrasion resistance.
  • a short service life has a negative effect, the end of which is determined by the blunting and flattening of the cutting tools. If the cutting tools or their cutting edges can no longer be reground, the tool must be replaced completely.
  • Rotary cutting tools that have a tool holder (or basic tool holder) made of steel, which has tool holders on its casing, can be remedied with regard to a longer service life, inserted into the hard metal tools and screwed there. The same applies in the event that tool carriers with the tools are screwed onto the basic tool holder.
  • the carbide tools have the advantage of a longer service life. In the case of small cutting knife penetration depths or cutting gaps, however, cutting inaccuracies or cutting errors occur in that the tool holder and the tool support have a certain surface roughness, on the basis of which the setting accuracy of the cutting knife fluctuates considerably with respect to the desired cutting depth.
  • the carbide tool or a combined tool holder with tool that is screwed onto a basic tool holder have different elasticity modules and thermal expansion coefficients, e.g. steel 11.5 '10 -6 ° C-' to carbide 5.5. 10-6 * C- 1 , with the consequence of an indefinite, in particular excessive deflection of the rotary cutting tool during cutting.
  • the rotary cutting tool according to claim 1 which is characterized according to the invention in that the cylindrical tool holder and the cutting tool or the cutting tools consist of a one-piece sintered hard metal body and that the cutting edge causing the cutting has a profile that is opposite the lateral guides of the tool holder slightly, preferably 0.05 to 2 ⁇ m.
  • the one-piece design of the rotary cutting tool preferably as a hollow cylinder, which is attached to a shaft, is sufficiently low in deflection, i.e. it has sufficient rigidity.
  • the cutting accuracy in particular is significantly improved.
  • carbide is considerably more resistant to abrasion than steel, i.e. longer tool life can be achieved before the knife edges are reground.
  • the cemented carbide consists of a fine grain mixture.
  • Sintered hard metals are powder metallurgically created by compiling a starting mixture, the mixing, Grinding, pre-pressing and sintering and any necessary regrinding produced.
  • Very fine grain mixtures in the above sense have a particle size before sintering of a maximum of 1 ⁇ m in diameter.
  • the cemented carbide should preferably have an elastic modulus between 350,000 and 640,000.
  • the resulting stiffness guarantees consistently good cutting results.
  • the cutting wedge of the cutting edge is preferably asymmetrical in cross-sectional profile with respect to a tool holder surface normal, in particular the cutting wedge center line of a cross section has a curvature in the Z direction.
  • the rotary cutting tool essentially consists of a cylindrical tool carrier 10 which has bores 11, with which this body can be fastened to a rotating shaft by means of screws.
  • the cylindrical tool carrier 10 On its jacket side, the cylindrical tool carrier 10 carries one or more cutting tools 12, 13, the contour of which can be seen in more detail in FIG. 2.
  • This is a closed or open cutting edge, which in the present case has a concave shape when viewed from the top. If desired, such as to create interrupted (perforated) cutting lines, the cutting edge can also be interrupted.
  • the knife edge 12 or 13 does not necessarily have to protrude vertically from the tool carrier 10 as a wedge, but, in contrast, can be slightly tilted or even bent.
  • the tool carrier 10 and the cutting tool or tools are in one piece and consist of a one-piece sintered hard metal body.
EP95100946A 1994-02-09 1995-01-25 Outil de coupe rotatif Withdrawn EP0667217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9402109U DE9402109U1 (de) 1994-02-09 1994-02-09 Rotationsschneidwerkzeug
DE9402109U 1994-02-09

Publications (1)

Publication Number Publication Date
EP0667217A1 true EP0667217A1 (fr) 1995-08-16

Family

ID=6904328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95100946A Withdrawn EP0667217A1 (fr) 1994-02-09 1995-01-25 Outil de coupe rotatif

Country Status (2)

Country Link
EP (1) EP0667217A1 (fr)
DE (1) DE9402109U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1011018A5 (fr) * 1995-12-22 1999-04-06 Matsushita Electric Ind Co Ltd Dispositif de frappe et procede de frappe.
EP1612014A1 (fr) * 2004-07-02 2006-01-04 Sandvik Intellectual Property AB Outil de coupe rotatif ainsi que dispositif de coupe comprenant un tel dispositif
US8540795B2 (en) 2008-12-18 2013-09-24 Sandvik Intellectual Property Ab Rotary cutter knife

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952179A (en) * 1974-05-08 1976-04-20 Rockwell International Corporation Rotary cutting die and method for its production
US3965786A (en) * 1974-07-16 1976-06-29 Moore Business Forms, Inc. Rotary die cutter
WO1985002570A1 (fr) * 1983-12-06 1985-06-20 Aren Bjoern Procede de fabrication d'un outil approprie a un travail de coupe et/ou de façonnage et outil fabrique de preference conformement a ce procede
JPH02500A (ja) * 1987-10-29 1990-01-05 Virginia Mason Res Center Ｉ型糖尿病素因の診断用プローブ
EP0396899A2 (fr) * 1989-04-14 1990-11-14 Bobst S.A. Cylindre-outil dans une machine rotative travaillant une matière en bande ou en plaque et procédé de réalisation
EP0401769A1 (fr) * 1989-06-06 1990-12-12 Gerhardt, Jorgen Dispositif pour emmener des rayons de matériau découpé hors d'une feuille de matériau
DE3924053A1 (de) * 1989-07-21 1991-01-24 Wilhelm Aichele Vorrichtung zum rotationsschneiden von werkstoffbahnen
JPH04147939A (ja) * 1990-10-09 1992-05-21 Mitsubishi Heavy Ind Ltd 超硬合金及びその製造方法
WO1992019451A1 (fr) * 1991-04-25 1992-11-12 Noven Pharmaceuticals, Inc. Procede et appareil permettant de former un systeme transdermique d'apport de medicament
WO1993013917A1 (fr) * 1992-01-09 1993-07-22 Rosemann Richard R Outil de tranchage rotatif

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH130203A (de) * 1926-10-25 1928-11-30 Krupp Ag Gesinterte Hartmetallegierung.
DE741840C (de) * 1930-07-26 1943-11-18 Krupp Ag Verfahren zur Herstellung von gesinterten harten Metallegierungen fuer Arbeitsgeraete und Werkzeuge
DE622347C (de) * 1931-07-19 1935-11-26 Fried Krupp Akt Ges Gussstahlf Verfahren zur Herstellung von Hartmetallegierungen fuer Arbeitsgeraete und Werkzeuge aus Wolframkarbid und einem zusaetzlichen Hilfsmetall
DE2442389B2 (de) * 1973-09-06 1976-11-18 Union Carbide Corp., New York, N.Y. (V.StA.) Verfahren zur herstellung von sinterhartmetall-koerpern aus wolframcarbid
US4240313A (en) * 1978-12-08 1980-12-23 Philip Morris Incorporated Rotary cutting knife mounting
DE2907325A1 (de) * 1979-02-24 1980-09-04 Winkler Duennebier Kg Masch Schneidwalze zur erzeugung profilierter innen-und aussenschnitte
DE3311796C2 (de) * 1983-03-31 1985-07-25 Alexander 6000 Frankfurt Winkler Vorrichtung zum Durchtrennen von Werkstücken
DE3411557A1 (de) * 1984-03-29 1985-10-03 Bielomatik Leuze Gmbh + Co, 7442 Neuffen Schneidwerkzeug zum herstellen von loechern
DE3738519A1 (de) * 1987-11-13 1989-05-24 Kessel Inh Guenther Zeim A Rotationssymetrisches werkzeug zur bearbeitung von schaumstoff, insbesondere von hartschaum
DE3806602A1 (de) * 1988-03-02 1988-07-07 Krupp Gmbh Hartmetallkoerper
ES2024255A6 (es) * 1990-05-16 1992-02-16 Comercial De Tecnologia Sanita Mecanismo para el corte en continuo de material laminar en forma de banda.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3952179A (en) * 1974-05-08 1976-04-20 Rockwell International Corporation Rotary cutting die and method for its production
US3965786A (en) * 1974-07-16 1976-06-29 Moore Business Forms, Inc. Rotary die cutter
WO1985002570A1 (fr) * 1983-12-06 1985-06-20 Aren Bjoern Procede de fabrication d'un outil approprie a un travail de coupe et/ou de façonnage et outil fabrique de preference conformement a ce procede
JPH02500A (ja) * 1987-10-29 1990-01-05 Virginia Mason Res Center Ｉ型糖尿病素因の診断用プローブ
EP0396899A2 (fr) * 1989-04-14 1990-11-14 Bobst S.A. Cylindre-outil dans une machine rotative travaillant une matière en bande ou en plaque et procédé de réalisation
EP0401769A1 (fr) * 1989-06-06 1990-12-12 Gerhardt, Jorgen Dispositif pour emmener des rayons de matériau découpé hors d'une feuille de matériau
DE3924053A1 (de) * 1989-07-21 1991-01-24 Wilhelm Aichele Vorrichtung zum rotationsschneiden von werkstoffbahnen
JPH04147939A (ja) * 1990-10-09 1992-05-21 Mitsubishi Heavy Ind Ltd 超硬合金及びその製造方法
WO1992019451A1 (fr) * 1991-04-25 1992-11-12 Noven Pharmaceuticals, Inc. Procede et appareil permettant de former un systeme transdermique d'apport de medicament
WO1993013917A1 (fr) * 1992-01-09 1993-07-22 Rosemann Richard R Outil de tranchage rotatif

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 141 (M - 1232) 9 April 1992 (1992-04-09) *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 431 (C - 0983) 9 September 1992 (1992-09-09) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1011018A5 (fr) * 1995-12-22 1999-04-06 Matsushita Electric Ind Co Ltd Dispositif de frappe et procede de frappe.
EP1612014A1 (fr) * 2004-07-02 2006-01-04 Sandvik Intellectual Property AB Outil de coupe rotatif ainsi que dispositif de coupe comprenant un tel dispositif
US8540795B2 (en) 2008-12-18 2013-09-24 Sandvik Intellectual Property Ab Rotary cutter knife

Also Published As

Publication number Publication date
DE9402109U1 (de) 1994-03-31

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19960217