EP0912296B1 - Device for sharpening blades - Google Patents

Device for sharpening blades Download PDF

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Publication number
EP0912296B1
EP0912296B1 EP97934414A EP97934414A EP0912296B1 EP 0912296 B1 EP0912296 B1 EP 0912296B1 EP 97934414 A EP97934414 A EP 97934414A EP 97934414 A EP97934414 A EP 97934414A EP 0912296 B1 EP0912296 B1 EP 0912296B1
Authority
EP
European Patent Office
Prior art keywords
hard metal
handle
cutting
tool
cutting plate
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
EP97934414A
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German (de)
French (fr)
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EP0912296A1 (en
Inventor
Wolfgang Plankenhorn
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Individual
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Individual
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Publication date
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Publication of EP0912296A1 publication Critical patent/EP0912296A1/en
Application granted granted Critical
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/06—Hand tools or other devices for non-rotary grinding, polishing, or stropping specially designed for sharpening cutting edges

Definitions

  • the invention relates to a device for sharpening Cutting on knives, scissors and the like after the Genus of the main claim.
  • Sharpening knives or The like using carbide has been around for a long time known.
  • Ceramic material is also used instead of hard metal used, which has a hardness similar to hard metal, however is more brittle. Because sintered materials such as hard metal or Ceramics, which are very expensive, come only relatively small Cutting plates made of sintered material in sharpening devices for Use that are clamped in a holding device have to. Cutting plates made of sintered materials are called Use for milling tools, turning tools and the like in large quantities manufactured. Sharpening of cutting edges Cutting devices such as knives, scissors, scythes etc.
  • a knife sharpener is also known (DE G 93 06 427.6) which a hard metal tool on a plastic handle is injected. Between the carbide tool and the handle a circumferential bead is provided, which increases the risk of injury should decrease.
  • the disadvantage of this knife sharpener is that Carbide tool is permanently attached to the handle. In addition, the geometry of the carbide tool leads to a cramped working posture.
  • the inventive device for sharpening cutting edges with the features of the main claim compared to the advantage that a mass-produced and therefore inexpensive carbide insert as Carbide tool is used and that this carbide insert in a corresponding, a handle having tool holder is interchangeably attached, so that a blunt hard metal insert is easily replaceable and different cutting with one tool can be sharpened. Furthermore, by choosing the Cutting plate, the working posture can be influenced favorably.
  • the longitudinal section through the insert is radially symmetrical (rhombic, rectangular, square, triangular) and the Mounting hole in the center of the insert, so that this in several positions on the holding device can be attached and thus several cutting edges Cutting plate can be used one after the other.
  • coated (TiN) carbide inserts are used, so that the service life increases.
  • An embodiment of the subject of the invention is in the drawing as a device for sharpening cutting with disassembled hard metal insert shown and in following described in more detail.
  • Fig. 1 is a knife sharpener in an exploded view shown.
  • a tool holder 3 On a handle 1 with a transverse bore 2 a tool holder 3 arranged with a wedge-shaped Recess 4, which has a lateral boundary wall.
  • a hard metal cutting plate 7 In the tool holder 3 or in the recess 4 is a hard metal cutting plate 7 can be used, which has a rhombic longitudinal cross section and a central bore 8, via which no illustrated screw this carbide insert on the Base of the recess 5 is screwed. Because of the Radial symmetry of the insert 7 with respect to Central bore 8, the insert 7 in two positions can be mounted and thus all 4 cutting edges 9 the same can be used.
  • the cutting edge is sharpened in that a Cutting edge 9 fastened in the tool holder 3 Cutting plate 7 over the cutting surface or the longitudinal surface a cutter is guided and one Material removal caused by scraping or cutting.
  • the Cutting surface connects the two parallel or wedge-shaped mutually arranged longitudinal surfaces. The cutting surface and one of the longitudinal surfaces forms the cutting edge of the cutting edge.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Scissors And Nippers (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Dry Shavers And Clippers (AREA)
  • Shearing Machines (AREA)
  • Harvester Elements (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

PCT No. PCT/DE97/01467 Sec. 371 Date May 17, 1999 Sec. 102(e) Date May 17, 1999 PCT Filed Jul. 11, 1997 PCT Pub. No. WO98/02280 PCT Pub. Date Jan. 22, 1998A device for sharpening blades has a hard metal cutting blade (7) per se known in the art, secured to an ergonomically shaped handle (1). A bead (6) is provided to reduce the risk of accidents.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung zum Schärfen von Schneiden an Messern, Scheren und dergleichen nach der Gattung des Hauptanspruchs. Das Schärfen von Messern oder dergleichen unter Einsatz von Hartmetall ist seit langem bekannt. Statt Hartmetall wird auch Keramikmaterial verwendet, was eine ähnliche Härte wie Hartmetall aufweist, jedoch spröder ist. Da Sinterwerkstoffe, wie Hartmetall oder Keramik, sehr teuer sind, kommen nur verhältnismäßig kleine Schneidplatten aus Sinterwerkstoff in Schärfvorrichtungen zum Einsatz, die in einer Haltevorrichtung festgespannt werden müssen. Schneidplatten aus Sinterwerkstoffen werden als Einsatz für Fräswerkzeuge, Drehmeißel und dergleichen in großen Stückzahlen hergestellt. Das Schärfen von Schneiden an Schneidgeräten wie Messern, Scheren, Sensen usw. wird bislang mit Wetzstäben oder durch Einrichtungen (EP O 431 273), die einen keilförmigen Spalt aufweisen an dem mehrere abgerundete Schleifelemente angeordnet sind, ausgeführt. Bei letzteren wird die zu schärfende Schneide in den keilförmigen Spalt eingesetzt und in Schneidenrichtung an den Schleifelementen entlang geführt. Ein solches "Messerschärfgerät" ist meist nur für einen begrenzten Größenbereich von Messern oder Schneidgeräten einsetzbar. Außerdem ist die je nach Schneidenart unterschiedliche Anschrägung der Schneide bei solchen Messerschärfgeräten festgelegt und nicht änderbar.The invention relates to a device for sharpening Cutting on knives, scissors and the like after the Genus of the main claim. Sharpening knives or The like using carbide has been around for a long time known. Ceramic material is also used instead of hard metal used, which has a hardness similar to hard metal, however is more brittle. Because sintered materials such as hard metal or Ceramics, which are very expensive, come only relatively small Cutting plates made of sintered material in sharpening devices for Use that are clamped in a holding device have to. Cutting plates made of sintered materials are called Use for milling tools, turning tools and the like in large quantities manufactured. Sharpening of cutting edges Cutting devices such as knives, scissors, scythes etc. have so far been used with sharpening rods or by means (EP O 431 273) which have a wedge-shaped gap on which several rounded grinding elements are arranged, executed. at the latter is the edge to be sharpened in the wedge-shaped Inserted gap and in the cutting direction at the Guided along grinding elements. Such one "Knife sharpener" is usually only for a limited Size range of knives or cutters can be used. It also differs depending on the type of cutting edge Bevel of the cutting edge in such knife sharpening devices fixed and cannot be changed.

Außerdem ist ein Messerschärfer bekannt (DE G 93 06 427.6) bei dem ein Hartmetallwerkzeug an einen Kunststoff-Handgriff angespritzt ist. Zwischen Hartmetallwerkzeug und Handgriff ist ein umlaufender Wulst vorgesehen, der die Verletzungsgefahr verringern soll. Nachteilig an diesem Messerschärfer ist, daß das Hartmetallwerkzeug unlösbar mit dem Handgriff verbunden ist. Außerdem führt die Geometrie des Hartmetallwerkzeugs zu einer verkrampften Arbeitshaltung.A knife sharpener is also known (DE G 93 06 427.6) which a hard metal tool on a plastic handle is injected. Between the carbide tool and the handle a circumferential bead is provided, which increases the risk of injury should decrease. The disadvantage of this knife sharpener is that Carbide tool is permanently attached to the handle. In addition, the geometry of the carbide tool leads to a cramped working posture.

Die erfindungsgemäße Vorrichtung zum Schärfen von Schneiden mit den Merkmalen des Hauptanspruchs hat dem gegenüber den Vorteil, daß eine in Serie hergestellte und deshalb preisgünstige Hartmetall-Schneidplatte als Hartmetallwerkzeug verwendet wird und daß diese Hartmetall-Schneidplatte in einer entsprechenden, einen Handgriff aufweisenden Werkzeugaufnahme austauschbar befestigt ist, so daß eine stumpfe Hartmetallschneidplatte leicht auswechselbar ist und unterschiedlichste Schneiden mit einem Werkzeug geschärft werden können. Außerdem kann durch die Wahl der Schneidplatte, die Arbeitshaltung günstig beeinflußt werden. Der Längsschnitt durch die Schneidplatte ist radialsymmetrisch (rhombisch, rechteckig, quadratisch, dreieckig) und die Befestigungsbohrung im Zentrum der Schneidplatte angeordnet, so daß diese in mehreren Positionen an der Haltevorrichtung befestigt werden kann und somit mehrere Schneiden der Schneidplatte nacheinander benutzt werden können.The inventive device for sharpening cutting edges with the features of the main claim compared to the advantage that a mass-produced and therefore inexpensive carbide insert as Carbide tool is used and that this carbide insert in a corresponding, a handle having tool holder is interchangeably attached, so that a blunt hard metal insert is easily replaceable and different cutting with one tool can be sharpened. Furthermore, by choosing the Cutting plate, the working posture can be influenced favorably. The longitudinal section through the insert is radially symmetrical (rhombic, rectangular, square, triangular) and the Mounting hole in the center of the insert, so that this in several positions on the holding device can be attached and thus several cutting edges Cutting plate can be used one after the other.

Nach einer vorteilhaften Ausgestaltung der Erfindung ist der Handgriff ergonomisch ausgebildet, so daß ein ermüdungsarmes Arbeiten möglich ist. According to an advantageous embodiment of the invention Handle ergonomically designed so that a low fatigue Work is possible.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung werden beschichtete (TiN) Hartmetall-Schneidplatten verwendet, so daß sich die Standzeit erhöht.According to a further advantageous embodiment of the invention coated (TiN) carbide inserts are used, so that the service life increases.

Nach einer weiteren vorteilhaften Ausgestaltung der Erfindung ist in der Haltevorrichtung eine Bohrung zur möglichen Aufhängung und zur Drehlageorientierung der Haltevorrichtung vorhanden, so daß die Vorrichtung nicht beschädigt wird und der Benutzer eine haptische Rückmeldung über die Drehlage der Vorrichtung hat, wenn er sie in der Hand hält.According to a further advantageous embodiment of the invention is a hole in the holding device for possible Suspension and for the orientation of the holding device available so that the device is not damaged and the user receives haptic feedback about the rotational position of the Device when he holds it in his hand.

Nach einer vorteilhaften Verwendung der Erfindung wird die Vorrichtung zum Entgraten verwandt, so daß Grate einfach und sicher entfernt werden können.After an advantageous use of the invention Device used for deburring so that burrs are easy and can be removed safely.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous configurations of the invention are the following description, the drawing and the Removable claims.

Ein Ausführungsbeispiel des Gegenstands der Erfindung ist in der Zeichnung als Vorrichtung zum Schärfen von Schneiden mit demontierter Hartmeltall-Schneidplatte dargestellt und im folgenden näher beschrieben.An embodiment of the subject of the invention is in the drawing as a device for sharpening cutting with disassembled hard metal insert shown and in following described in more detail.

In Fig. 1 ist ein Schneidenschärfgerät in Explosionszeichnung dargestellt. An einem Haltegriff 1 mit einer Querbohrung 2 ist eine Werkzeugaufnahme 3 angeordnet mit einer keilförmigen Ausnehmung 4, die eine seitliche Begrenzungswand aufweist. Zwischen Werkzeugaufnahme 3 und Griff 1 ist ein Wulst 6 vorgesehen, um bei Ausrutschen des Schneidgerätes Verletzungen zu vermeiden. In die Werkzeugaufnahme 3 bzw. in die Ausnehmung 4 ist eine Hartmetall-Schneidplatte 7 einsetzbar, die einen rhombischen Längsquerschnitt aufweist und eine Zentralbohrung 8, über die mittels einer nicht dargestellten Schraube diese Hartmetall-Schneidplatte an der Grundfläche der Ausnehmung 5 festschraubbar ist. Wegen der Radialsymmetrie der Schneidplatte 7 bezüglich der Zentralbohrung 8, kann die Schneidplatte 7 in zwei Positionen montiert werden und somit können alle 4 Schneidkanten 9 derselben ausgenutzt werden.In Fig. 1 is a knife sharpener in an exploded view shown. On a handle 1 with a transverse bore 2 a tool holder 3 arranged with a wedge-shaped Recess 4, which has a lateral boundary wall. There is a bead 6 between tool holder 3 and handle 1 provided to when the cutter slips To avoid injuries. In the tool holder 3 or in the recess 4 is a hard metal cutting plate 7 can be used, which has a rhombic longitudinal cross section and a central bore 8, via which no illustrated screw this carbide insert on the Base of the recess 5 is screwed. Because of the Radial symmetry of the insert 7 with respect to Central bore 8, the insert 7 in two positions can be mounted and thus all 4 cutting edges 9 the same can be used.

Das Schärfen von Schneiden erfolgt dadurch, daß eine Schneidkante 9 einer in der Werkzeugaufnahme 3 befestigten Schneidplatte 7 über die Schneidfläche oder die Längsfläche eines Schneidgeräts geführt wird und dabei einen Materialabtrag durch Schaben oder Schneiden bewirkt. Die Schneidfläche verbindet die beiden parallel oder keilförmig zueinander angeordneten Längsflächen. Die Schneidfläche und eine der Längsflächen bilden die Schneidkante der Schneide. The cutting edge is sharpened in that a Cutting edge 9 fastened in the tool holder 3 Cutting plate 7 over the cutting surface or the longitudinal surface a cutter is guided and one Material removal caused by scraping or cutting. The Cutting surface connects the two parallel or wedge-shaped mutually arranged longitudinal surfaces. The cutting surface and one of the longitudinal surfaces forms the cutting edge of the cutting edge.

BezugszahlenlisteLIST OF REFERENCE NUMBERS

11
Haltegriffhandle
22
Querbohrungcross hole
33
Werkzeugaufnahmetool holder
44
Ausnehmungrecess
55
Grundfläche der AusnehmungBase area of the recess
66
Wulstbead
77
Schneidplattecutting board
88th
Zentralbohrungcentral bore
99
Schneidkantecutting edge

Claims (5)

  1. Device for sharpening blades of cutting devices by means of a hard metal tool (7),
    with a handle (1), at whose one free end the hard metal tool is fastened, and
    with a protective bead (6) between the hard metal tool and the handle (1), characterised in that
    a cutting plate (7) which is usable for instance in a milling insert and having a square, radially symmetric (rhombic, rectangular, square or triangular) longitudinal cross-section and a central fixing hole (8) serves as the hard metal tool,
    at the end of the handle is a tool holder (3) with a wedge-shaped support (4) and lateral base (5) for the arrangement and fixing of the cutting plate (7), and
    the cutting plate (7) can be screwed to the tool holder (3) by means of a screw.
  2. Device according to claim 1, characterised in that the handle (1) is ergonomically developed.
  3. Device according to one of the previous claims, characterised in that the hard metal cutting plate (7) is coated.
  4. Device according to one of the previous claims, characterised in that a hole (2) is provided in the holding device (1) for the possible suspension and pivotal orientation of the holding device (1).
  5. Use of a device according to one of the previous claims, characterised in that the device is used for deburring.
EP97934414A 1996-07-11 1997-07-11 Device for sharpening blades Expired - Lifetime EP0912296B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19627813 1996-07-11
DE19627813 1996-07-11
PCT/DE1997/001467 WO1998002280A1 (en) 1996-07-11 1997-07-11 Device for sharpening blades

Publications (2)

Publication Number Publication Date
EP0912296A1 EP0912296A1 (en) 1999-05-06
EP0912296B1 true EP0912296B1 (en) 2003-04-02

Family

ID=7799455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97934414A Expired - Lifetime EP0912296B1 (en) 1996-07-11 1997-07-11 Device for sharpening blades

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US (1) US6119554A (en)
EP (1) EP0912296B1 (en)
AT (1) ATE235991T1 (en)
AU (1) AU725512B2 (en)
CA (1) CA2260186A1 (en)
DE (3) DE19654042A1 (en)
DK (1) DK0912296T3 (en)
NO (1) NO990057D0 (en)
NZ (1) NZ334102A (en)
WO (1) WO1998002280A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU783179B2 (en) * 1999-11-12 2005-09-29 Procter & Gamble Company, The Oral compositions providing optimal surface conditioning
US20050239384A1 (en) * 2004-04-26 2005-10-27 True Setting Sales Reshaping fixture for carbide inserts
US7764995B2 (en) 2004-06-07 2010-07-27 Cardiac Pacemakers, Inc. Method and apparatus to modulate cellular regeneration post myocardial infarct
US7729761B2 (en) 2004-07-14 2010-06-01 Cardiac Pacemakers, Inc. Method and apparatus for controlled gene or protein delivery
US7828711B2 (en) 2004-08-16 2010-11-09 Cardiac Pacemakers, Inc. Method and apparatus for modulating cellular growth and regeneration using ventricular assist device
US7001259B1 (en) * 2004-10-13 2006-02-21 Jiin Haur Industrial Co., Ltd. Blade grinder for gardening cutting tool
US8060219B2 (en) 2004-12-20 2011-11-15 Cardiac Pacemakers, Inc. Epicardial patch including isolated extracellular matrix with pacing electrodes
US7981065B2 (en) 2004-12-20 2011-07-19 Cardiac Pacemakers, Inc. Lead electrode incorporating extracellular matrix
US7774057B2 (en) 2005-09-06 2010-08-10 Cardiac Pacemakers, Inc. Method and apparatus for device controlled gene expression for cardiac protection
DE102007038792A1 (en) * 2007-08-08 2009-02-19 Thorsten Brenner Sharpener for sharpening blades, especially razor blades
CN103522141A (en) * 2013-10-30 2014-01-22 郭斌 Numerical-control steel ball edging device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US289919A (en) * 1883-12-11 Can-opener
FR1594518A (en) * 1967-04-27 1970-06-08
DE6805452U (en) * 1968-10-28 1969-02-27 Berhard Schmid FILE HANDLE
DE3504296A1 (en) * 1985-02-08 1986-08-14 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Lathe tool having a shank as column support for the actual turning tool performing the cutting
US4731957A (en) * 1987-01-12 1988-03-22 Weisinger Martin D Knife sharpener
DE4002758A1 (en) * 1990-01-31 1991-08-01 Georg Krause Knife sharpener tool - has cutting edge drawn along groove formed by two hardened pins clamped side by side
DE9306427U1 (en) * 1993-04-29 1993-09-16 Zecha Hartmetall Werkzeugfabri Knife sharpener
US5377563A (en) * 1993-07-02 1995-01-03 Weeks; Raymond Knife sharpener

Also Published As

Publication number Publication date
CA2260186A1 (en) 1998-01-22
DK0912296T3 (en) 2003-07-21
NO990057L (en) 1999-01-07
DE59709706D1 (en) 2003-05-08
US6119554A (en) 2000-09-19
ATE235991T1 (en) 2003-04-15
WO1998002280A1 (en) 1998-01-22
AU3765297A (en) 1998-02-09
AU725512B2 (en) 2000-10-12
NZ334102A (en) 2000-09-29
NO990057D0 (en) 1999-01-07
DE19780690D2 (en) 1999-09-02
DE19654042A1 (en) 1998-01-15
EP0912296A1 (en) 1999-05-06

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