EP0411253B1 - Method for manufacturing grinding or similar tools covered with extremely hard abrasive grains, in particular for finishing gear wheels and tools obtainable by this process. - Google Patents

Method for manufacturing grinding or similar tools covered with extremely hard abrasive grains, in particular for finishing gear wheels and tools obtainable by this process. Download PDF

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Publication number
EP0411253B1
EP0411253B1 EP90108786A EP90108786A EP0411253B1 EP 0411253 B1 EP0411253 B1 EP 0411253B1 EP 90108786 A EP90108786 A EP 90108786A EP 90108786 A EP90108786 A EP 90108786A EP 0411253 B1 EP0411253 B1 EP 0411253B1
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EP
European Patent Office
Prior art keywords
extremely hard
grinding
tools
hard abrasive
abrasive grains
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
EP90108786A
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German (de)
French (fr)
Other versions
EP0411253A2 (en
EP0411253A3 (en
Inventor
Herbert Loos
Manfred Erhardt
Gerhard Reichert
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.)
Gleason Works
Original Assignee
Hurth Maschinen und Werkzeuge Gmbh-Ik
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
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Publication of EP0411253A2 publication Critical patent/EP0411253A2/en
Publication of EP0411253A3 publication Critical patent/EP0411253A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0054—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by impressing abrasive powder in a matrix

Definitions

  • the invention relates to a method for producing a grinding or the like tool coated with extremely hard abrasive grains, in particular one for fine gear machining, and a grinding or the like tool obtainable therewith.
  • This tool can have the shape of a disc of any cross-section, a gear, a rack or a worm.
  • extreme hard abrasive grains which should be understood to mean diamond, CBN, tungsten carbide and the like grains as used in abrasive, i.e. no tools with uniformly directed cutting edges are known.
  • DE 33 36 593 C1 discloses a tool coated with CBN grains for finishing the tooth flanks of workpiece gears, in which the tooth flanks are ground. Grinding the tooth flanks is extremely time-consuming and the tools used for this, coated with diamond grains, are very expensive to use.
  • FR 2 107 309 A shows a method for producing a grinding wheel profiled in the axial direction, which has a ceramic base body covered with a mixture of a plastic and diamond grains.
  • a mold block is required to profile the base body, with which the base body is profiled before covering; if using a steel body, an additional grinding wheel would be required for profiling.
  • the plastic / diamond grain mixture is applied in the form of a tape on the outside of the base body after its pores have been closed.
  • the invention has for its object to develop a method with which tools of the type mentioned can be manufactured more cost-effectively than before, or to develop a tool of the type mentioned at the outset so that it can be manufactured more cost-effectively.
  • the solution to the problem is primarily that the extremely hard abrasive grains are absorbed by the pores of a ceramic base body and held there by means of an adhesive.
  • Claim 2 relates to a grinding tool obtainable by this method.
  • a very important advantage of the method according to the invention and the tool thus obtainable is that the basic body made of ceramic, regardless of its shape, can be prepared very precisely with a simple, inexpensive grinding tool; Subsequent processing of the extremely hard abrasive grains as in the tool known from DE 33 36 593 C1 is not necessary.
  • a plate-shaped grinding wheel 1 made of ceramic material is covered with extremely hard abrasive grains 3 at least on one end face 2 thereof.
  • the end face 2 to be covered is coated with an adhesive 4 and the abrasive grains 3 are applied immediately thereafter. This can be done by sprinkling or by applying with a brush.
  • the abrasive grains 3 are pressed against the grinding wheel. The abrasive grains 3 slide into the pores 5 of the ceramic material 6 (FIG. 2), into which the adhesive 4 has already “sucked in”.
  • the grinding grains 3 can be pressed in with a correspondingly shaped pressing tool, not shown, but also by brushing in with a simple tool, for example a spatula, in an extreme case even with the finger.
  • Dan adhesive 4 is then allowed to harden in accordance with the manufacturer's instructions. In the case of an epoxy-based adhesive, this can be, for example, 2 hours at about 150 ° C.
  • the grinding wheel according to Fig. 1 is briefly pulled off in the area of its outer contour, e.g. with a single-grain diamond dresser. Each time you pull it off, new abrasive grains are exposed on the occupied end face 2, which then function as "cutting".
  • a grinding wheel 1 coated with diamond grains as described above can be used both for grinding gear-like tools coated with CBN grains in accordance with DE-OS 33 36 593 and for grinding hardened workpiece gears in particular.
  • a grinding wheel coated with CBN grains is usually used to grind hardened workpiece gears.
  • a gear-shaped tool 7 (FIG. 3) can be coated in the same way on its tooth flanks with extremely hard abrasive grains. To do this, it only needs to be precisely aligned and ground beforehand. To press in the abrasive grains 3, the tool 7 is unrolled with a master wheel 8, since the abrasive grains 3 then only protrude very little and evenly from the previously ground tooth flanks.
  • a grinding wheel 10 with a circular cross-section (cylindrical, conical, spherical, etc.), which is effective on its peripheral surface 12, as shown in FIG. 4, can be coated with extremely hard abrasive grains in basically the same way. To do this, it is precisely aligned and subtracted beforehand. To press in the abrasive grains 3, the grinding wheel 10 is allowed to roll on a correspondingly shaped counter surface or such a counter surface is guided along the rolling grinding wheel. If the grinding wheel 10 is also to be covered on one or both end faces 11, the same procedure can be followed as described above in connection with the plate-shaped grinding wheel 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

For manufacturing grinding tools (1, 7) coated with extra hard grinding particles (3), instead of a basic body of steel a commercially available grinding tool of corresponding shape and size of a ceramic material is used as the basic body. This is brushed with an adhesive (4) at the points to be coated, the grinding particles (3) are applied and pressed in the pores (5) of the ceramic material (6); finally, the adhesive (4) is allowed to set. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Herstellen eines mit extrem harten Schleifkörnern belegten Schleif- od. dgl. Werkzeugs, insbes. eines solchen zur Zahnradfeinbearbeitung, und ein damit erhältliches Schleif- od. dgl. Werkzeug. Dabei kann dieses Werkzeug die Form einer Scheibe von beliebigem Querschnitt, eines Zahnrades, einer Zahnstange oder einer Schnecke haben. An dieser Stelle sei ausdrücklich darauf hingewiesen, daß die hier und im folgenden verwendeten Begriffe "Schleifen" und "Schleifwerkzeug" im weitesten Sinne zu verstehen sind, d.h. daß insbesondere auch "Honen", "Hartschaben", "Schabschleifen", "Abziehen" und "Abrichten" einschließlich der dafür verwendeten Werkzeuge darunter zu verstehen sind. Das gilt sinngemäß auch für den Begriff "extrem harte Schleifkörner", worunter Diamant-, CBN-, Wolframkarbid- und dgl. Körner verstanden werden sollen, wie sie bei abrasiven, d.h. keine einheitlich gerichteten Schneidkanten aufweisenden Werkzeugen bekannt sind.The invention relates to a method for producing a grinding or the like tool coated with extremely hard abrasive grains, in particular one for fine gear machining, and a grinding or the like tool obtainable therewith. This tool can have the shape of a disc of any cross-section, a gear, a rack or a worm. At this point it should be expressly pointed out that the terms "grinding" and "grinding tool" used here and below are to be understood in the broadest sense, i.e. that in particular also "honing", "hard cockroaches", "scraping", "honing" and "dressing" including the tools used for this are to be understood. This also applies analogously to the term "extremely hard abrasive grains", which should be understood to mean diamond, CBN, tungsten carbide and the like grains as used in abrasive, i.e. no tools with uniformly directed cutting edges are known.

Stand der TechnikState of the art

Aus der DE 33 36 593 C1 ist ein mit CBN-Körnern beschichtetes Werkzeug zum Feinbearbeiten der Zahnflanken von Werkstück-Zahnrädern bekannt, bei dem die Zahnflanken überschliffen sind. Das Überschleifen der Zahnflanken ist enorm zeitaufwendig und die dafür verwendeten, mit Diamantkörnern beschichteten Werkzeuge sind sehr teuer in der Anwendung.DE 33 36 593 C1 discloses a tool coated with CBN grains for finishing the tooth flanks of workpiece gears, in which the tooth flanks are ground. Grinding the tooth flanks is extremely time-consuming and the tools used for this, coated with diamond grains, are very expensive to use.

In der FR 2 107 309 A ist ein Verfahren zum Herstellen einer in Achsrichtung profilierten Schleifscheibe gezeigt, die einen mit einem Gemisch aus einem Kunststoff und Diamantkörnern belegter Grundkörper aus Keramik aufweist. Zum Profilieren des Grundkörpers ist ein Formblock erforderlich, mit dem der Grundkörper vor dem Belegen profiliert wird; bei Verwendung eines Grundkörpers aus Stahl wäre eine weitere Schleifscheibe zum Profilieren nötig. Das Kunststoff/Diamantkörner-Gemisch wird in Form eines Bandes außen auf den Grundkörper aufgebracht, nachdem dessen Poren verschlossen wurden.FR 2 107 309 A shows a method for producing a grinding wheel profiled in the axial direction, which has a ceramic base body covered with a mixture of a plastic and diamond grains. A mold block is required to profile the base body, with which the base body is profiled before covering; if using a steel body, an additional grinding wheel would be required for profiling. The plastic / diamond grain mixture is applied in the form of a tape on the outside of the base body after its pores have been closed.

Aufgabetask

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu entwickeln, mit dem Werkzeuge der eingangs genannten Art kostengünstiger herstellbar sind als bisher, bzw. ein Werkzeug der eingangs genannten Art so weiterzuentwickeln, daß es kostengünstiger herstellbar ist.The invention has for its object to develop a method with which tools of the type mentioned can be manufactured more cost-effectively than before, or to develop a tool of the type mentioned at the outset so that it can be manufactured more cost-effectively.

Lösungsolution

Gemäß dem Patentanspruch 1 besteht die Lösung der Aufgabe primär drin, daß die extrem harten Schleifkörner von den Poren eines Grundkörpers aus Keramik aufgenommen und dort mittels eines Klebstoffes gehalten werden. Der Anspruch 2 bezieht sich auf ein nach diesem Verfahren erhältliches Schleifwerkzeug.According to claim 1, the solution to the problem is primarily that the extremely hard abrasive grains are absorbed by the pores of a ceramic base body and held there by means of an adhesive. Claim 2 relates to a grinding tool obtainable by this method.

Ein ganz wesentlicher Vorteil des erfindungsgemäßen Verfahrens bzw. des so erhältlichen Werkzeugs besteht darin, daß der Grundkörper aus Keramik unabhängig von seiner Form mit einem einfachen, preiswert zu beschaffenden Schleifwerkzeug sehr präzise hergerichtet werden kann; ein nachträgliches Bearbeiten der extrem harten Schleifkörner wie bei dem aus der DE 33 36 593 C1 bekannten Werkzeug ist nicht erforderlich.A very important advantage of the method according to the invention and the tool thus obtainable is that the basic body made of ceramic, regardless of its shape, can be prepared very precisely with a simple, inexpensive grinding tool; Subsequent processing of the extremely hard abrasive grains as in the tool known from DE 33 36 593 C1 is not necessary.

Zeichnungdrawing

Die Erfindung wird nachstehend anhand von drei Ausführungsbeispielen beschrieben, die in 4 Figuren dargestellt sind.
Es zeigen

Fig. 1
eine tellerförmige Schleifscheibe im Schnitt,
Fig. 2
einen vergrößert dargestellten Ausschnitt aus einem gemäß der Erfindung hergestellten Werkzeug,
Fig. 3
ein zahnradförmiges Schleif- od. dgl. Werkzeug, und
Fig. 4
eine zylindrische Schleifscheibe im Schnitt.
The invention is described below with reference to three exemplary embodiments, which are shown in 4 figures.
Show it
Fig. 1
a plate-shaped grinding wheel in the cut,
Fig. 2
2 shows an enlarged section of a tool produced according to the invention,
Fig. 3
a gear-shaped grinding or the like. Tool, and
Fig. 4
a cylindrical grinding wheel in section.

Beschreibungdescription

Eine tellerförmige Schleifscheibe 1 (Fig. 1) aus Keramik-Material ist zumindest auf ihrer einen Stirnseite 2 mit extrem harten Schleifkörnern 3 belegt. Dazu wird die zu belegende Stirnseite 2 mit einem Klebstoff 4 eingestrichen und unmittelbar danach werden die Schleifkörner 3 aufgebracht. Das kann durch Aufstreuen erfolgen oder durch Auftragen mit einem Pinsel. Noch ehe der Klebstoff 4 anfängt hart zu werden, werden die Schleifkörner 3 gegen die Schleifscheibe gedrückt. Dabei schieben sich die Schleifkörner 3 in die Poren 5 des Keramik-Materials 6 (Fig. 2), in die sich der Klebstoff 4 schon vorher "eingesaugt" hat. Das Eindrücken der Schleifkörner 3 kann mit einem entsprechend geformten, nicht dargestellten Drückwerkzeug erfolgen, aber auch durch Einstreichen mit einem einfachen Werkzeug, z.B. einem Spatel, im Extremfall sogar mit dem Finger. Anschließend läßt man dan Klebstoff 4 entsprechend den Vorschriften des Herstellers aushärten. Bei einem Kleber auf Epoxydharz-Basis kann das z.B. 2 Stunden bei etwa 150oC sein.A plate-shaped grinding wheel 1 (FIG. 1) made of ceramic material is covered with extremely hard abrasive grains 3 at least on one end face 2 thereof. For this purpose, the end face 2 to be covered is coated with an adhesive 4 and the abrasive grains 3 are applied immediately thereafter. This can be done by sprinkling or by applying with a brush. Before the adhesive 4 begins to harden, the abrasive grains 3 are pressed against the grinding wheel. The abrasive grains 3 slide into the pores 5 of the ceramic material 6 (FIG. 2), into which the adhesive 4 has already “sucked in”. The grinding grains 3 can be pressed in with a correspondingly shaped pressing tool, not shown, but also by brushing in with a simple tool, for example a spatula, in an extreme case even with the finger. Dan adhesive 4 is then allowed to harden in accordance with the manufacturer's instructions. In the case of an epoxy-based adhesive, this can be, for example, 2 hours at about 150 ° C.

Die Schleifscheibe nach Fig. 1 wird, um mit ihr arbeiten zu können, im Bereich ihrer Außenkontur kurz abgezogen, z.B. mit einem Einkorn-Diamant-Abrichter. Dabei werden bei jedem Abziehen neue Schleifkörner an der belegten Stirnseite 2 freigelegt, die dann als "Schneiden" fungieren.In order to be able to work with it, the grinding wheel according to Fig. 1 is briefly pulled off in the area of its outer contour, e.g. with a single-grain diamond dresser. Each time you pull it off, new abrasive grains are exposed on the occupied end face 2, which then function as "cutting".

Eine wie vorstehend beschrieben mit Diamantkörnern beschichtete Schleifscheibe 1 kann sowohl zum Schleifen von mit CBN-Körnern beschichteten zahnradartigen Werkzeugen gemäß der DE-OS 33 36 593 verwendet werden als auch zum Schleifen von insbesondere gehärteten Werkstück-Zahnrädern. Eine entsprechend mit CBN-Körnern beschichtete Schleifscheibe wird i.d.R. zum Schleifen von gehärteten Werkstück-Zahnrädern benützt.A grinding wheel 1 coated with diamond grains as described above can be used both for grinding gear-like tools coated with CBN grains in accordance with DE-OS 33 36 593 and for grinding hardened workpiece gears in particular. A grinding wheel coated with CBN grains is usually used to grind hardened workpiece gears.

Ein zahnradförmiges Werkzeug 7 (Fig. 3) kann in im Prinzip gleicher Weise auf seinen Zahnflanken mit extrem harten Schleifkörnern belegt werden. Dazu muß es nur vorher exakt ausgerichtet und genau geschliffen worden sein. Zum Eindrücken der Schleifkörner 3 läßt man das Werkzeug 7 mit einem Meisterrad 8 abrollen, da dann die Schleifkörner 3 nur noch ganz wenig und gleichmäßig aus den vorher geschliffenen Zahnflanken vorstehen.A gear-shaped tool 7 (FIG. 3) can be coated in the same way on its tooth flanks with extremely hard abrasive grains. To do this, it only needs to be precisely aligned and ground beforehand. To press in the abrasive grains 3, the tool 7 is unrolled with a master wheel 8, since the abrasive grains 3 then only protrude very little and evenly from the previously ground tooth flanks.

Schließlich kann auch eine auf ihrer Umfangsfläche 12 wirksame Schleifscheibe 10 mit kreisförmigem Querschnitt (zylindrisch, kegelig, ballig usw.), wie eine mögliche Form in Fig. 4 gezeigt ist, in im Prinzip gleicher Weise mit extrem harten Schleifkörnern belegt werden. Dazu wird sie vorher exakt ausgerichtet und abgezogen. Zum Eindrücken der Schleifkörner 3 läßt man die Schleifscheibe 10 auf einer entsprechend geformten Gegenfläche abrollen oder führt eine solche Gegenfläche an der abrollenden Schleifscheibe entlang. Wenn die Schleifscheibe 10 auch an einer oder beiden Stirnflächen 11 belegt werden soll, kann in gleicher Weise vorgegangen werden wie es oben im Zusammenhang mit der tellerförmigen Schleifscheibe 1 beschrieben ist.Finally, a grinding wheel 10 with a circular cross-section (cylindrical, conical, spherical, etc.), which is effective on its peripheral surface 12, as shown in FIG. 4, can be coated with extremely hard abrasive grains in basically the same way. To do this, it is precisely aligned and subtracted beforehand. To press in the abrasive grains 3, the grinding wheel 10 is allowed to roll on a correspondingly shaped counter surface or such a counter surface is guided along the rolling grinding wheel. If the grinding wheel 10 is also to be covered on one or both end faces 11, the same procedure can be followed as described above in connection with the plate-shaped grinding wheel 1.

BegriffslisteList of terms

11
SchleifscheibeGrinding wheel
22nd
Stirnseite von 1Front of 1
33rd
SchleifkornAbrasive grain
44th
Klebstoffadhesive
55
Pore in 6Pore in 6
66
Keramik-MaterialCeramic material
77
zahnradförmiges Werkzeuggear-shaped tool
88th
MeisterradMaster bike
1010th
SchleifscheibeGrinding wheel
1111
Stirnseite von 10Front of 10
1212th
Umfangsfläche von 10Circumferential area of 10

Claims (2)

  1. A method of manufacturing a grinding or similar tool covered with extremely hard abrasive granules, in particular for the fine machining of gearwheels, comprising the method steps:
    a) high-precision preparation of a basic body (6) accurately aligned for the purpose and made of a porous ceramic material;
    b) application of a adhesive (4) to the surface(s) to be covered;
    c) application of the extremely hard abrasive granules (3) to the adhesive (4);
    d) pressing of the extremely hard abrasive granules (3) into the pores (5) of the basic body (6), pressing being carried out according to the form of the basic body (6) by means of a suitable pressure disc, a spatula or the fingers, or by relative rolling of the basic body (6) on a correspondingly formed surface or using a master wheel (8) in such a manner that the extremely hard abrasive granules (3) project very little and uniformly from the pores (5);
    e) hardening of the adhesive.
  2. A grinding or similar tool, in particular for use in the fine machining of gearwheels, obtainable by the method set out in claim 1.
EP90108786A 1989-08-01 1990-05-10 Method for manufacturing grinding or similar tools covered with extremely hard abrasive grains, in particular for finishing gear wheels and tools obtainable by this process. Expired - Lifetime EP0411253B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925364A DE3925364A1 (en) 1989-08-01 1989-08-01 USE OF A GRINDING OD. DGL. TOOLS FROM A CERAMIC MATERIAL AND METHOD FOR PRODUCING GRINDING OD COATED WITH EXTREMELY HARD GRINDING CORES. DGL. TOOLS
DE3925364 1989-08-01

Publications (3)

Publication Number Publication Date
EP0411253A2 EP0411253A2 (en) 1991-02-06
EP0411253A3 EP0411253A3 (en) 1991-11-06
EP0411253B1 true EP0411253B1 (en) 1996-02-28

Family

ID=6386244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108786A Expired - Lifetime EP0411253B1 (en) 1989-08-01 1990-05-10 Method for manufacturing grinding or similar tools covered with extremely hard abrasive grains, in particular for finishing gear wheels and tools obtainable by this process.

Country Status (4)

Country Link
EP (1) EP0411253B1 (en)
JP (1) JPH0366568A (en)
AT (1) ATE134553T1 (en)
DE (2) DE3925364A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9410222U1 (en) * 1994-06-24 1994-08-11 Zahnradpräzision Horst Reineke & Co. GmbH, 58791 Werdohl Honing tool for precision gears
DE9411326U1 (en) * 1994-07-13 1994-09-15 TYROLIT REINEKE Advanced Systems GmbH & Co. KG, 58791 Werdohl Toothed honing tool
DE10007444C2 (en) * 2000-02-18 2002-11-21 Theo Hipp Method and device for dressing grinding wheels, and use of the device
DE102016117132A1 (en) 2016-09-12 2018-03-15 Jakob Lach Gmbh & Co. Kg Diamond tool such as dressing or grinding tool and method for producing the diamond tool
EP3381611A1 (en) * 2017-03-27 2018-10-03 Dr. Müller Diamantmetall AG A grinding tool

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US2523698A (en) * 1946-12-27 1950-09-26 Moore Special Tool Co Inc Method of making diamond loaded abrasive articles
FR993724A (en) * 1948-08-27 1951-11-06 Improvements in the manufacture of abrasive polishers
DE1097788B (en) * 1955-10-31 1961-01-19 Nat Broach & Mach Honing tool for finishing toothed wheels
DE1779326U (en) * 1958-10-17 1958-12-11 Maag Zahnraeder & Maschinen Ag DISC GRINDING DISC.
US3368263A (en) * 1965-12-30 1968-02-13 Dexco Corp Method of making gears and the like
NL7013165A (en) * 1970-09-05 1972-03-07
JPS5021194B1 (en) * 1970-12-05 1975-07-21
JPS4837312A (en) * 1971-09-14 1973-06-01
CH585611A5 (en) * 1975-04-09 1977-03-15 Boccadoro Ferdinando Diamond grain surface grinding wheel mfr. - with thread cut in wheel and part filled with grain before rolling flat
JPS52143592A (en) * 1976-05-26 1977-11-30 Inoue Japax Res Inc Composite grinder
DE2758285A1 (en) * 1977-12-27 1979-06-28 Honda Motor Co Ltd Grinding wheel mfg. process - has hub blank machined and balanced before applying peripheral abrasive coating
DE3035635C2 (en) * 1980-09-20 1982-08-12 Ernst Winter & Sohn ( GmbH & Co.), 2000 Hamburg Process for dressing grinding wheels with diamond or cubic crystalline boron nitride
DE3336593C1 (en) * 1983-10-07 1984-10-04 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Method for producing a gear, rack or worm-shaped tool for fine machining the tooth flanks of especially hardened gears
GB2155372B (en) * 1984-03-08 1987-07-08 Illinois Tool Works Improving or forming curved tooth surfaces
JPS61226268A (en) * 1985-03-29 1986-10-08 Matsutani Seisakusho:Kk Abrasive grain sticking method
JPS61249277A (en) * 1985-04-25 1986-11-06 Shinko Kogyo:Kk Manufacture of super-hard abrasive grain grindstone
US4634453A (en) * 1985-05-20 1987-01-06 Norton Company Ceramic bonded grinding wheel
JPS646907A (en) * 1987-06-29 1989-01-11 Sumitomo Electric Industries Removing device for coating of optical fiber
DE8713758U1 (en) * 1987-10-13 1989-02-09 Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München Gear or rack-shaped tool for fine machining of particularly hardened gears

Also Published As

Publication number Publication date
DE3925364C2 (en) 1991-11-21
DE3925364A1 (en) 1991-02-07
JPH0366568A (en) 1991-03-22
EP0411253A2 (en) 1991-02-06
EP0411253A3 (en) 1991-11-06
ATE134553T1 (en) 1996-03-15
DE59010158D1 (en) 1996-04-04

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