EP0519267B1 - Bore nitride coated micro-milling tool - Google Patents

Bore nitride coated micro-milling tool Download PDF

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Publication number
EP0519267B1
EP0519267B1 EP92109332A EP92109332A EP0519267B1 EP 0519267 B1 EP0519267 B1 EP 0519267B1 EP 92109332 A EP92109332 A EP 92109332A EP 92109332 A EP92109332 A EP 92109332A EP 0519267 B1 EP0519267 B1 EP 0519267B1
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EP
European Patent Office
Prior art keywords
working surface
rotating tool
tool according
micro
superhard material
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
EP92109332A
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German (de)
French (fr)
Other versions
EP0519267A1 (en
Inventor
Werner Dipl.-Ing. Pickert
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.)
Kapp & Co KG Werkzeugmaschinenfabrik GmbH
Original Assignee
Kapp & Co KG Werkzeugmaschinenfabrik GmbH
Kapp & Co KG Werkzeugmaschinenfabrik GmbH
KAPP WERKZEUGMASCH
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 Kapp & Co KG Werkzeugmaschinenfabrik GmbH, Kapp & Co KG Werkzeugmaschinenfabrik GmbH, KAPP WERKZEUGMASCH filed Critical Kapp & Co KG Werkzeugmaschinenfabrik GmbH
Publication of EP0519267A1 publication Critical patent/EP0519267A1/en
Application granted granted Critical
Publication of EP0519267B1 publication Critical patent/EP0519267B1/en
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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
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1904—Composite body of diverse material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1946—Face or end mill
    • Y10T407/1948—Face or end mill with cutting edge entirely across end of tool [e.g., router bit, end mill, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/20—Profiled circular tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/27—Cutters, for shaping comprising tool of specific chemical composition

Definitions

  • the invention relates to a rotating tool for machining hardened workpieces, preferably made of steel.
  • the tool consists of a steel, preferably hardened base body with a defined working surface, which is provided with a covering made of superhard material, preferably boron nitride.
  • Such rotating tools preferably in the form of grinding wheels, are known. They have the disadvantage that there is no defined cutting edge, but that the individual grains of the covering, which is made of superhard material, form several randomly positioned cutting surface pieces. The result is a large spread in terms of service life.
  • the invention has for its object to provide a rotating tool of the type described above, which has a defined cutting edge and is suitable for precision machining of workpieces made of materials with a hardness of up to 62 HRC (Rockwell Hardness).
  • the solution to this problem by the invention is characterized in that the working surface of the tool is provided with a plurality of parallel micro-flutes which are aligned at an acute angle to a tangent applied to the working surface and have a cross-sectional profile with a defined cutting edge and a defined chip space, and that the entire working surface is provided with a homogeneous layer of the same layer thickness made of superhard material, preferably boron nitride.
  • the cross-sectional profile of the micro flutes can be sawtooth-shaped with an approximately radial tooth face forming the cutting edge at the radially outer end, a tooth head extending approximately in the circumferential direction and a tooth back forming the chip space.
  • the distance between the micro flutes is 35 to 600 »m and their depth is 20 to 1,000» m.
  • the layer of superhard material on the work surface has a thickness of 1 to 5 »m.
  • the micro-flutes can be divided by transverse grooves that run at an angle to the micro-flutes. This results in a division of the cutting edge, which leads to narrower chips and enables a better supply of cooling lubricant to the cutting edges.
  • micro flutes and / or transverse grooves can run in an arc.
  • the grinding wheel shown in perspective in FIG. 1 consists of a steel base body 1, which is designed with a defined working surface 2.
  • This work surface 2 is provided with a multiplicity of micro-flutes 3 running parallel to one another, the cross-sectional shape of which can be seen in FIGS. 2 and 3.
  • These micro flutes 3 are aligned at an acute angle to a tangent applied to the work surface 2.
  • Your cross-sectional profile results in a defined one Cutting edge 4 and a defined chip space 5.
  • the entire working surface 2 of the base body 1 is covered with a homogeneous layer 6 of the same layer thickness made of superhard material. Boron nitride is preferably used as the material.
  • the above-described configuration of the rotating tool for machining results in a large number of defined cutting edges through the profiling of the working surface 2 with the micro-flutes 3 described. so that constant and higher tool life can be achieved.
  • the cross-sectional profile of the micro chip flutes 3 can be designed with acute-angled teeth according to FIG. 2 or sawtooth-like according to FIG. 3.
  • the sawtooth-like design results in an approximately radially extending tooth face forming the cutting edge 4 at the radially outer end, a tooth head extending approximately in the circumferential direction and a tooth back forming the chip space 5.
  • the distance between the micro flutes 3 is between 35 to 600 »m, whereas their depth is 20 to 1,000» m.
  • the layer 6 of superhard material applied to the entire surface of the work surface 2 has a thickness of 1 to 5 »m.
  • the micro flutes 3 are additionally subdivided by transverse grooves 7, which run at an angle to the micro flutes 3.
  • transverse grooves 7 A preferred cross section of these transverse grooves 7 is shown in the sectional view in FIG. 4.
  • the profile shape of the work surface 2 can correspond to the final profile of the workpieces to be machined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Drilling Tools (AREA)
  • Chemical Vapour Deposition (AREA)
  • Milling Processes (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Ceramic Products (AREA)

Abstract

The invention relates to a rotating tool for machining hardened workpieces, preferably made of steel, consisting of a steel, preferably hardened, parent body (1) with a defined working surface (2) which is provided with a coating (6) of superhard material, preferably boron nitride. In order to provide defined cutting edges in a tool of this type for the precision machining of workpieces with a hardness of up to 62 HRC, the working surface (2) is provided with a multiplicity of micro chip grooves (3) which run parallel to one another, are orientated at an acute angle to a tangent applied to the working surface (2) and have a cross-sectional profile with defined cutting edge (4) and defined chip space (5), the entire working surface (2) being provided with a homogeneous coating (6) of the same thickness of superhard material, preferably boron nitride. <IMAGE>

Description

Die Erfindung betrifft ein rotierendes Werkzeug zur spanabhebenden Bearbeitung von gehärteten Werkstücken, vorzugsweise aus Stahl. Das Werkzeug besteht aus einem stählernen, vorzugsweise gehärteten Grundkörper mit definierter Arbeitsfläche, die mit einem Belag aus superhartem Material, vorzugsweise Bornitrid, versehen ist.The invention relates to a rotating tool for machining hardened workpieces, preferably made of steel. The tool consists of a steel, preferably hardened base body with a defined working surface, which is provided with a covering made of superhard material, preferably boron nitride.

Derartige rotierende Werkzeuge, vorzugsweise in Form von Schleifscheiben, sind bekannt. Sie haben den Nachteil, daß sich keine definierte Schneidkante ergibt, sondern daß die einzelnen Körner des aus superhartem Material bestehenden Belages mehrere zufällig positionierte Schneidflächenstücke bilden. Als Resultat ergibt sich hinsichtlich der Standzeit eine große Streubreite.Such rotating tools, preferably in the form of grinding wheels, are known. They have the disadvantage that there is no defined cutting edge, but that the individual grains of the covering, which is made of superhard material, form several randomly positioned cutting surface pieces. The result is a large spread in terms of service life.

Ausgehend von diesem bekannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein rotierendes Werkzeug der eingangs beschriebenen Art zu schaffen, das eine definierte Schneidkante hat und zur Präzisionsbearbeitung von Werkstücken geeignet ist, die aus Werkstoffen mit einer Härte bis zu 62 HRC (Rockwell-Härte) bestehen.Based on this known prior art, the invention has for its object to provide a rotating tool of the type described above, which has a defined cutting edge and is suitable for precision machining of workpieces made of materials with a hardness of up to 62 HRC (Rockwell Hardness).

Die Lösung dieser Aufgabenstellung durch die Erfindung ist dadurch gekennzeichnet, daß die Arbeitsfläche des Werkzeuges mit einer Vielzahl von parallel zueinander verlaufenden Mikro-Spannuten versehen ist, die unter einem spitzen Winkel zu einer an die Arbeitsfläche angelegten Tangente ausgerichtet sind und ein Querschnittsprofil mit definierter Schneidkante und definiertem Spanraum aufweisen, und daß die gesamte Arbeitsfläche mit einer homogenen Schicht gleicher Schichtdicke aus superhartem Material, vorzugsweise Bornitrid, versehen ist.The solution to this problem by the invention is characterized in that the working surface of the tool is provided with a plurality of parallel micro-flutes which are aligned at an acute angle to a tangent applied to the working surface and have a cross-sectional profile with a defined cutting edge and a defined chip space, and that the entire working surface is provided with a homogeneous layer of the same layer thickness made of superhard material, preferably boron nitride.

Der Vorteil dieses erfindungsgemäßen Vorschlages besteht darin, daß sich eine definierte Schneidkante ergibt, so daß mit dem erfindungsgemäßen Werkzeug eine vorherbestimmbare Standzeit erreicht wird. Mit dem erfindungsgemäßen Werkzeug können somit konstante und höhere Standmengen an Werkstücken erreicht werden.The advantage of this proposal according to the invention is that a defined cutting edge results, so that a predeterminable service life is achieved with the tool according to the invention. With the tool according to the invention, constant and higher tool life can be achieved.

Vorteilhalterweise kann das Querschnittsprofil der Mikro-Spannuten sägezahnartig mit einer etwa radial verlaufenden, am radial außenliegenden Ende die Schneidkante bildenden Zahnbrust, einem etwa in Umfangsrichtung verlaufenden Zahnkopf und einem den Spanraum bildenden Zahnrücken ausgebildet sein.Advantageously, the cross-sectional profile of the micro flutes can be sawtooth-shaped with an approximately radial tooth face forming the cutting edge at the radially outer end, a tooth head extending approximately in the circumferential direction and a tooth back forming the chip space.

Bei einer bevorzugten Ausführungsform der Erfindung beträgt der Abstand zwischen den Mikro-Spannuten 35 bis 600 »m und ihre Tiefe 20 bis 1.000 »m.In a preferred embodiment of the invention, the distance between the micro flutes is 35 to 600 »m and their depth is 20 to 1,000» m.

Bei einer weiteren Ausführungsform der Erfindung weist die auf der Arbeitsfläche befindliche Schicht aus superhartem Material eine Dicke von 1 bis 5 »m auf.In a further embodiment of the invention, the layer of superhard material on the work surface has a thickness of 1 to 5 »m.

Bei einer bevorzugten Weiterbildung nach der Erfindung können die Mikro-Spannuten durch Quernuten unterteilt sein, die unter einem Winkel zu den Mikro-Spannuten verlaufen. Hierdurch ergibt sich eine Aufteilung der Schneidkante, die zu schmaleren Spänen führt und eine bessere Zufuhr von Kühl-Schmierstoff zu den Schneidkanten ermöglicht.In a preferred development according to the invention, the micro-flutes can be divided by transverse grooves that run at an angle to the micro-flutes. This results in a division of the cutting edge, which leads to narrower chips and enables a better supply of cooling lubricant to the cutting edges.

Die Mikro-Spannuten und/oder Quernuten können bogenförmig verlaufen.The micro flutes and / or transverse grooves can run in an arc.

Schließlich wird vorgeschlagen, die Form des Werkzeuges dem endgültigen Profil der zu bearbeitenden Werkstücke entsprechend auszubilden, beispielsweise der Form einer Verzahnung oder sonstiger Profile, so daß mit dem erfindungsgemäßen Werkzeug Verzahnungs- und andere komplizierte Profile hergestellt werden können.Finally, it is proposed to design the shape of the tool according to the final profile of the workpieces to be machined, for example the shape of a toothing or other profiles, so that toothing and other complicated profiles can be produced with the tool according to the invention.

Auf der Zeichnung ist ein Ausführungsbeispiel des erfindungsgemäßen Werkzeuges in Form einer Schleifscheibe mit einer zweiten Ausführungsvariante für die Querschnittsformgebung der Mikro-Spannuten dargestellt, und zwar zeigen:

Fig. 1
eine perspektivische Ansicht einer Schleifscheibe,
Fig. 2
einen Teilschnitt durch die Arbeitsfläche dieser Schleifscheibe gemäß der Schnittlinie II - II in Fig. 1,
Fig. 3
einen der Fig. 2 entsprechenden Teilschnitt einer abgewandelten Ausführungsform und
Fig. 4
einen weiteren Teilschnitt gemäß der Schnittlinie IV - IV in Fig. 1.
The drawing shows an exemplary embodiment of the tool according to the invention in the form of a grinding wheel with a second embodiment variant for the cross-sectional shape of the micro flutes, namely:
Fig. 1
a perspective view of a grinding wheel,
Fig. 2
2 shows a partial section through the working surface of this grinding wheel according to section line II-II in FIG. 1,
Fig. 3
one of FIG. 2 corresponding partial section of a modified embodiment and
Fig. 4
a further partial section along the section line IV - IV in Fig. 1st

Die in Fig. 1 perspektivisch dargestellte Schleifscheibe besteht aus einem stählernen Grundkörper 1, der mit einer definierten Arbeitsfläche 2 ausgeführt ist. Diese Arbeitsfläche 2 ist mit einer Vielzahl von parallel zueinander verlaufenden Mikro-Spannuten 3 versehen, deren Querschnittsformgebung in den Fig. 2 und 3 zu erkennen ist. Diese Mikro-Spannuten 3 sind unter einem spitzen Winkel zu einer an die Arbeitsfläche 2 angelegten Tangente ausgerichtet. Ihr Querschnittsprofil ergibt eine definierte Schneidkante 4 und einen definierten Spanraum 5. Die gesamte Arbeitsfläche 2 des Grundkörpers 1 ist mit einer homogenen Schicht 6 gleicher Schichtdicke aus superhartem Material überzogen. Als Material findet vorzugsweise Bornitrid Verwendung.The grinding wheel shown in perspective in FIG. 1 consists of a steel base body 1, which is designed with a defined working surface 2. This work surface 2 is provided with a multiplicity of micro-flutes 3 running parallel to one another, the cross-sectional shape of which can be seen in FIGS. 2 and 3. These micro flutes 3 are aligned at an acute angle to a tangent applied to the work surface 2. Your cross-sectional profile results in a defined one Cutting edge 4 and a defined chip space 5. The entire working surface 2 of the base body 1 is covered with a homogeneous layer 6 of the same layer thickness made of superhard material. Boron nitride is preferably used as the material.

Im Gegensatz zu den bekannten bornitrid-belegten Schleifscheiben ergibt sich bei der voranstehend beschriebenen Ausgestaltung des rotierenden Werkzeuges zur spanabhebenden Bearbeitung eine Vielzahl von definierten Schneidkanten durch die Profilierung der Arbeitsfläche 2 mit den geschilderten Mikro-Spannuten 3. Die Standzeit des Werkzeuges wird demzufolge besser vorherbestimmbar, so daß konstante und höhere Standmengen an Werkstücken erreicht werden können.In contrast to the known boron nitride-coated grinding wheels, the above-described configuration of the rotating tool for machining results in a large number of defined cutting edges through the profiling of the working surface 2 with the micro-flutes 3 described. so that constant and higher tool life can be achieved.

Das Querschnittsprofil der Mikro-Spannuten 3 kann gemäß Fig. 2 mit spitzwinkligen Zähnen oder gemäß Fig. 3 sägezahnartig ausgebildet sein. Bei der sägezahnartigen Ausbildung ergibt sich eine etwa radial verlaufende, am radial außenliegenden Ende die Schneidkante 4 bildende Zahnbrust, ein etwa in Umfangsrichtung verlaufender Zahnkopf und ein den Spanraum 5 bildender Zahnrücken. In Jedem Fall liegt der Abstand zwischen den Mikro-Spannuten 3 zwischen 35 bis 600 »m, wogegen ihre Tiefe 20 bis 1.000 »m beträgt. Die auf der gesamten Oberfläche der Arbeitsfläche 2 aufgebrachte Schicht 6 aus superhartem Material hat eine Dicke von 1 bis 5 »m.The cross-sectional profile of the micro chip flutes 3 can be designed with acute-angled teeth according to FIG. 2 or sawtooth-like according to FIG. 3. The sawtooth-like design results in an approximately radially extending tooth face forming the cutting edge 4 at the radially outer end, a tooth head extending approximately in the circumferential direction and a tooth back forming the chip space 5. In any case, the distance between the micro flutes 3 is between 35 to 600 »m, whereas their depth is 20 to 1,000» m. The layer 6 of superhard material applied to the entire surface of the work surface 2 has a thickness of 1 to 5 »m.

Bei der in Fig. 1 dargestellten Ausführungsform der Schleifscheibe sind die Mikro-Spannuten 3 zusätzlich durch Quernuten 7 unterteilt, die unter einem Winkel zu den Mikro-Spannuten 3 verlaufen. Ein bevorzugter Querschnitt dieser Quernuten 7 ist in der Schnittdarstellung der Fig. 4 gezeichnet.In the embodiment of the grinding wheel shown in FIG. 1, the micro flutes 3 are additionally subdivided by transverse grooves 7, which run at an angle to the micro flutes 3. A preferred cross section of these transverse grooves 7 is shown in the sectional view in FIG. 4.

Während beim dargestellten Ausführungsbeispiel sowohl die Mikro-Spannuten 3 als auch die Quernuten 7 geradlinig verlaufen, besteht selbstverständlich die Möglichkeit, die Mikro-Spannuten 3 und/oder die Quernuten 7 mit einem bogenförmigen Verlauf auszubilden. Für den Fall, daß mit dem erfindungsgemäßen Werkzeug eine Präzisions-Hartbearbeitung durch Profilschleifen vorgenommen werden soll, kann die Profilform der Arbeitsfläche 2 dem endgültigen Profil der zu bearbeitenden Werkstücke entsprechen.While both the micro-flutes 3 and the transverse grooves 7 run in a straight line in the illustrated embodiment, there is of course the possibility of the micro-flutes 3 and / or to form the transverse grooves 7 with an arcuate course. In the event that precision hard machining by profile grinding is to be carried out with the tool according to the invention, the profile shape of the work surface 2 can correspond to the final profile of the workpieces to be machined.

Bezugszeichenliste:Reference symbol list:

11
GrundkörperBasic body
22nd
ArbeitsflächeWork surface
33rd
Mikro-SpannutMicro flute
44th
SchneidkanteCutting edge
55
SpanraumChip space
66
Schichtlayer
77
QuernutCross groove

Claims (7)

  1. Rotating tool for machining hardened workpieces, preferably of steel, consisting of a steel, preferably hardened, basic body having a defined working surface which is provided with a layer of superhard material, preferably boron nitride, characterized in that the working surface (2) is provided with a multiplicity of micro chip grooves (3) which run parallel to one another, are orientated at an acute angle to a tangent applied to the working surface (2) and have a cross-sectional profile having a defined cutting edge (4) and a defined chip space (5), and in that the entire working surface (2) is provided with a homogeneous coating (6) of uniform coating thickness of superhard material, preferably boron nitride.
  2. Rotating tool according to Claim 1, characterized in that the cross-sectional profile of the micro chip grooves (3) is of saw-tooth-like design having an approximately radially running tooth face forming the cutting edge (4) at the radially outer end, a tooth head running approximately in the peripheral direction, and a tooth back forming the chip space (5).
  3. Rotating tool according to Claim 1 or 2, characterized in that the distance between the micro chip grooves (3) is 35 to 600 »m and its depth 20 to 1000 »m.
  4. Rotating tool according to one of Claims 1 to 3, characterized in that the coating (6) of superhard material on the working surface (2) has a thickness of 1 to 5 »m.
  5. Rotating tool according to at least one of Claims 1 to 4, characterized in that the micro chip grooves (3) are subdivided by transverse grooves (7) which run at an angle to the micro chip grooves (3).
  6. Rotating tool according to at least one of Claims 1 to 5, characterized in that the micro chip grooves (3) and/or the transverse grooves (7) run in a curved shape.
  7. Rotating tool according to at least one of Claims 1 to 6, characterized in that the shape of the tool corresponds to the final profile of the workpieces to be machined.
EP92109332A 1991-06-17 1992-06-03 Bore nitride coated micro-milling tool Expired - Lifetime EP0519267B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4119872 1991-06-17
DE4119872A DE4119872C2 (en) 1991-06-17 1991-06-17 Rotating tool for machining hard workpieces

Publications (2)

Publication Number Publication Date
EP0519267A1 EP0519267A1 (en) 1992-12-23
EP0519267B1 true EP0519267B1 (en) 1995-04-19

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EP92109332A Expired - Lifetime EP0519267B1 (en) 1991-06-17 1992-06-03 Bore nitride coated micro-milling tool

Country Status (7)

Country Link
US (1) US5299892A (en)
EP (1) EP0519267B1 (en)
JP (1) JPH05192817A (en)
AT (1) ATE121336T1 (en)
CA (1) CA2071121C (en)
DE (2) DE4119872C2 (en)
ES (1) ES2072050T3 (en)

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Publication number Priority date Publication date Assignee Title
EP0770457B1 (en) * 1995-10-25 2001-01-03 Osaka Diamond Industrial Co. Grinding wheel
DE19543748A1 (en) * 1995-11-24 1997-05-28 Widia Gmbh Cutting tool, method for coating a cutting tool and use of the cutting tool
US6149354A (en) * 1998-12-16 2000-11-21 Walters; Jayce P. Tool and method for cutting a seat in the setting of stones in jewelry
US7632175B2 (en) * 2004-05-04 2009-12-15 Blount, Inc. Cutting blade hard-facing method and apparatus
WO2015031651A1 (en) 2013-08-30 2015-03-05 Asko, Inc. Shear knife

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0361027A1 (en) * 1988-09-30 1990-04-04 HAWERA Präzisionswerkzeuge GmbH Profile milling cutter

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US2318549A (en) * 1941-04-14 1943-05-04 Continental Machines Metal cutting saw band
FR1206286A (en) * 1958-07-03 1960-02-09 Paul Hug Ets Sawtooth and saw tooth disc with application
US3553905A (en) * 1967-10-10 1971-01-12 Jerome H Lemelson Tool structures
US3531840A (en) * 1967-11-16 1970-10-06 Omark Industries Inc Durable file
DE7601299U1 (en) * 1976-01-20 1976-05-13 Guenter Effgen Jes-Diamantmetall, 6581 Herrstein GRINDING DISC O.DGL.
JPS5828645B2 (en) * 1977-11-17 1983-06-17 三洋電機株式会社 Disc structure for stylus resharpening
JPS6018753B2 (en) * 1979-03-09 1985-05-11 大日本印刷株式会社 How to manufacture files
JPS6368314A (en) * 1986-09-11 1988-03-28 Toyota Central Res & Dev Lab Inc Manufacture of polishing tool
JPH029586A (en) * 1988-06-24 1990-01-12 Oodaka Seiko Kk Electrodeposition grinder element
IE892863L (en) * 1988-09-09 1990-03-09 Galderma Rech Dermatologique Abrasive compacts
DE3912681A1 (en) * 1989-04-18 1990-10-25 Winter & Sohn Ernst METHOD FOR GALVANIC COATING OF SEGMENT SURFACES ARRANGED ON THE SURFACE OF A BASIC BODY AND PRODUCTS PRODUCED AFTER THAT

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361027A1 (en) * 1988-09-30 1990-04-04 HAWERA Präzisionswerkzeuge GmbH Profile milling cutter

Also Published As

Publication number Publication date
CA2071121C (en) 1996-05-21
EP0519267A1 (en) 1992-12-23
DE4119872A1 (en) 1992-12-24
ATE121336T1 (en) 1995-05-15
JPH05192817A (en) 1993-08-03
DE4119872C2 (en) 1994-06-30
ES2072050T3 (en) 1995-07-01
CA2071121A1 (en) 1992-12-18
US5299892A (en) 1994-04-05
DE59201953D1 (en) 1995-05-24

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