EP0505615B1 - Grinding wheel - Google Patents

Grinding wheel Download PDF

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Publication number
EP0505615B1
EP0505615B1 EP91120604A EP91120604A EP0505615B1 EP 0505615 B1 EP0505615 B1 EP 0505615B1 EP 91120604 A EP91120604 A EP 91120604A EP 91120604 A EP91120604 A EP 91120604A EP 0505615 B1 EP0505615 B1 EP 0505615B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
grooves
channels
segments
wheel according
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
EP91120604A
Other languages
German (de)
French (fr)
Other versions
EP0505615A1 (en
Inventor
Hans-Robert Dr. Ing. Meyer
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.)
Saint Gobain Diamantwerkzeuge GmbH and Co KG
Original Assignee
Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
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 Ernst Winter and Sohn Diamantwekzeuge GmbH and Co filed Critical Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
Publication of EP0505615A1 publication Critical patent/EP0505615A1/en
Application granted granted Critical
Publication of EP0505615B1 publication Critical patent/EP0505615B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots

Definitions

  • the invention relates to a grinding wheel, in particular a cup grinding wheel, which on its cylindrical outer surface has segments which are divided by grooves and which are coated with grinding grains, preferably made of diamond or cubic-crystalline boron nitride.
  • a grinding wheel is e.g. known from FR-A-1 104 941.
  • the coated segment surfaces should be the same in shape, size and distance, but can be of different geometric shapes, such as circular surfaces , Rounds or square surfaces, for example. Such can be brought about if the peripheral surface of the grinding wheel is divided by grooves which intersect crosswise and are aligned parallel or obliquely to the outer edge of the grinding wheel.
  • the object of the invention is to provide a grinding wheel, which carries the abrasive grains on segments which are divided by grooves, with a large number of coolant channels, without requiring a great deal of effort.
  • annular Grooves are arranged which intersect the grooves, so that coolant channels result which open into the grooves between adjacent segments.
  • the number of coolant channels created in this way and their size can be varied as required by the number and width of the grooves, because for each groove there are a large number of coolant channels which lie on a circle, the number of which depends on the spacing of the grooves or the number of segments. It has been shown to be advantageous if the grooves running parallel to one another are formed deeper than the grooves cut by them and the depth of the grooves is selected such that the grooves only cut the deeper grooves.
  • the cup grinding wheel 1 has a base 2 with a hub 6, which is provided with a bore 8 for clamping the tool.
  • the outside of the wheel rim 4 of the cup grinding wheel 1 is frustum-shaped by grooves 12 and 14 Segments 10 subdivided, which carry diamond grinding bodies 16 on their square end faces.
  • the grooves 12 which run parallel to one another and the grooves 14 which cut them can be produced in one operation by so-called rolling if the base body of the cup grinding wheel 1 is made, for example, of light metal such as aluminum.
  • the grooves 12 and 14 each have a V-shaped cross section, that is to say their side walls are directed obliquely to one another. However, the grooves 12 are deeper than the grooves 14, as can be seen from the information T1 and T2 in FIG. 4.
  • two annular grooves 20 and 22 are arranged on the inside of the disk ring 4 in the illustrated embodiment. These grooves 20 and 22 are so deep that they intersect the deep grooves 12, but not the less deep grooves 14. This creates elongated, narrow coolant channels 18 at the intersection between the deep grooves 12 and the grooves 20 and 22.
  • the number and distribution of these coolant channels 18 is dependent on the number of grooves 20 or 22 and the number or spacing of the deeper grooves 12. Accordingly, the local assignment of the coolant channels 18 to the individual segments 10 is dependent on the position of the grooves 20 and 22, respectively.
  • the groove 20 runs below the center of the individual segments 10, so that coolant channels 18 result which lie between four adjacent segments.
  • the situation is different in the case of the groove 22 arranged laterally offset with respect to the segments 10 through the coolant channels 18, which each lie between two segments.
  • the number and distribution and location of the coolant channels depend on the number of grooves and thus the number of segments and that it is easily possible to create as many cooling channels as the grinding wheel by means of a corresponding number of grooves Carries segments without requiring a major effort.
  • the width of the grooves has an order of magnitude of 1 to 5 mm shown as suitable.
  • the advantage can be exploited that even with large engagement lengths of the grinding wheel, that is to say in those applications in which a larger sector of the circumference of the grinding wheel is in engagement with the workpiece to be treated, without a great technical outlay by a corresponding number of coolant channels, on the one hand, sufficient cooling can be achieved and, on the other hand, optimal flushing of the chip chambers between the segments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Gegenstand der Erfindung bildet eine Schleifscheibe, insbesondere eine Topfschleifscheibe, die auf ihrer zylinderförmigen Außenseite durch Rillen unterteilte Segmente trägt, welche mit Schleifkörnern vorzugsweise aus Diamant oder kubisch - kristallinem Bornitrid beschichtet sind. Eine solche Schleifscheibe ist z.B. aus der FR-A-1 104 941 bekannt.The invention relates to a grinding wheel, in particular a cup grinding wheel, which on its cylindrical outer surface has segments which are divided by grooves and which are coated with grinding grains, preferably made of diamond or cubic-crystalline boron nitride. Such a grinding wheel is e.g. known from FR-A-1 104 941.

Auf verschiedenen Anwendungsgebieten besteht das Bedürfnis nach Schleifscheiben, bei denen die Schleifkörner lediglich auf Segmentflächen angeordnet sind, die im Abstand zueinander stehen, wobei die beschichteten Segmentflächen in ihrer Form, Größe und Abstand gleich sein sollen, jedoch von unterschiedlichen geometrischen Formen sein können, wie Kreisflächen, Ronden oder beispielsweise quadratischen Flächen. Derartiges läßt sich herbeiführen, wenn die Umfangsfläche der Schleifscheibe durch Rillen unterteilt wird, die sich kreuzweise schneiden und parallel oder schräg zum Außenrand der Schleifscheibe ausgerichtet sind.In various fields of application, there is a need for grinding wheels in which the abrasive grains are only arranged on segment surfaces that are spaced apart, the coated segment surfaces should be the same in shape, size and distance, but can be of different geometric shapes, such as circular surfaces , Rounds or square surfaces, for example. Such can be brought about if the peripheral surface of the grinding wheel is divided by grooves which intersect crosswise and are aligned parallel or obliquely to the outer edge of the grinding wheel.

Auch bei derartigen Ausführungsformen ergibt sich jedoch das Problem einer ausreichenden Kühlung der Schleifscheibe insbesondere bei großen Schleifeingriffsflächen und einem hinreichenden Freispülen der Spankammern zwischen den mit Schleifkörnern beschichteten Segmenten.Even with such embodiments, however, there is the problem of sufficient cooling of the grinding wheel, in particular in the case of large grinding engagement surfaces, and adequate flushing of the chip chambers between the segments coated with abrasive grains.

Für die Kühlung ist es bekannt, neben einer Kühlmittelzuführung von außen, die jedoch häufig nicht ausreichend ist, eine Schleifscheibe mit Bohrungen zu versehen, durch welche ein Kühlmittel der Schleifscheibe von innen nach außen zugeführt werden kann. Die Anordnung von Kühlmittelkanälen in größerer Anzahl ist jedoch mit einem erheblichen Arbeits - und damit auch Kostenaufwand verbunden. Das gilt insbesondere dann, wenn die Oberflächensegmente, welche Schleifkörner tragen, verhältnismäßig klein sind, das heißt ihre Anzahl groß ist und eine gleichmäßige Kühlung vorliegen soll.For cooling, it is known, in addition to a coolant supply from the outside, which is often not sufficient, to provide a grinding wheel with holes through which a coolant can be supplied to the grinding wheel from the inside to the outside. The arrangement of coolant channels in large numbers, however, is associated with a considerable amount of work and thus also cost. This applies in particular when the surface segments which carry abrasive grains are relatively small, that is to say that their number is large and there should be uniform cooling.

Aufgabe der Erfindung ist es, eine Schleifscheibe, welche die Schleifkörner auf Segmenten trägt, die durch Rillen unterteilt sind, mit einer Vielzahl von Kühlmittelkanälen zu versehen, ohne daß es dazu eines größeren Aufwandes bedarf. Gemäß der Erfindung ist dafür vorgesehen, daß auf der Innenseite des die Schleifkörner tragenden Scheibenkranzes ringförmige Nuten angeordnet sind, welche die Rillen schneiden, so daß sich Kühlmittelkanäle ergeben, die in den Rillen zwischen benachbarten Segmenten münden. Die Anzahl der so geschaffenen Kühlmittelkanäle und ihre Größe läßt sich beliebig variieren durch die Anzahl und die Breite der Nuten, denn für jede Nut ergibt sich eine Vielzahl von Kühlmittelkanälen, die auf einem Kreis liegen, wobei ihre Anzahl abhängig ist von dem Abstand der Rillen bzw. der Anzahl der Segmente. Als vorteilhaft hat es sich dazu gezeigt, wenn diejenigen parallel zueinander verlaufenden Rillen tiefer ausgebildet sind als die von ihnen geschnittenen Rillen und die Tiefe der Nuten so gewählt wird, daß die Nuten nur die tieferen Rillen schneiden.The object of the invention is to provide a grinding wheel, which carries the abrasive grains on segments which are divided by grooves, with a large number of coolant channels, without requiring a great deal of effort. According to the invention it is provided that on the inside of the wheel rim carrying the abrasive grains annular Grooves are arranged which intersect the grooves, so that coolant channels result which open into the grooves between adjacent segments. The number of coolant channels created in this way and their size can be varied as required by the number and width of the grooves, because for each groove there are a large number of coolant channels which lie on a circle, the number of which depends on the spacing of the grooves or the number of segments. It has been shown to be advantageous if the grooves running parallel to one another are formed deeper than the grooves cut by them and the depth of the grooves is selected such that the grooves only cut the deeper grooves.

Dabei ergeben sich verhältnismäßig lange und schmale Kühlmittelkanäle, wenn die Rillen in der Art einer sogenannten Rändelung ausgebildet sind, bei der die Seitenwände der Rillen schräg zueinander ausgerichtet sind, so daß die Rillen einen etwa V - förmigen Querschnitt haben und die Segmente pyramidenförmig bzw. pyramidenstumpfförmig ausgebildet sind. Breitere Kühlmittelkanäle ergeben sich dagegen wenn die Rillen in der Art einer Riffelung ausgebildet sind, bei der die Seitenwände parallel zueinander stehen und die Segmente quaderförmig gestaltet sind. Werden dazu die Nuten unterhalb der Mitte der Segmente verlaufend angeordnet, so ergeben sich Kühlmittelkanäle, welche in der Mitte von vier benachbarten Segmenten liegen, während bei einem seitlichen Verlauf der Nuten sich Kühlmittelkanäle ergeben, die zwischen zwei benachbarten Segmenten liegen.This results in relatively long and narrow coolant channels if the grooves are designed in the manner of a so-called knurling, in which the side walls of the grooves are oriented obliquely to one another, so that the grooves have an approximately V-shaped cross section and the segments are pyramid-shaped or truncated pyramid-shaped are trained. Broader coolant channels, on the other hand, result if the grooves are designed in the manner of a corrugation in which the side walls are parallel to one another and the segments are cuboid in shape. If the grooves are arranged running underneath the middle of the segments, coolant channels result which lie in the middle of four adjacent segments during with a lateral course of the grooves, coolant channels result which lie between two adjacent segments.

Ein Ausführungsbeispiel der Erfindung ist nachstehend unter Bezugnahme auf eine Zeichnung erläutert. Darin zeigen:

Figur 1:
eine Topfschleifscheibe in perspektivischer Darstellung;
Figur 2:
die Draufsicht auf die Topfschleifscheibe nach Figur 1;
Figur 3:
einen Längsschnitt durch die Topfschleifscheibe nach der Linie III - III der Figur 1;
Figur 4:
einen Schnitt nach der Linie IV - IV der Figur 2 in vergrößertem Maßstab und
Figur 5:
eine Teildraufsicht auf die Schleiffläche in vergrößertem Maßstab.
An embodiment of the invention is explained below with reference to a drawing. In it show:
Figure 1:
a cup grinding wheel in perspective;
Figure 2:
the top view of the cup grinding wheel of Figure 1;
Figure 3:
a longitudinal section through the cup grinding wheel along the line III - III of Figure 1;
Figure 4:
a section along the line IV - IV of Figure 2 on an enlarged scale and
Figure 5:
a partial plan view of the grinding surface on an enlarged scale.

Die Topfschleifscheibe 1 besitzt einen Boden 2 mit einer Nabe 6, die zum Einspannen des Werkzeuges mit einer Bohrung 8 versehen ist.The cup grinding wheel 1 has a base 2 with a hub 6, which is provided with a bore 8 for clamping the tool.

Die Außenseite des Scheibenkranzes 4 der Topfschleifscheibe 1 ist durch Rillen 12 und 14 in pyramidenstumpfförmige Segmente 10 unterteilt, die auf ihrer quadratischen Stirnseite Diamantschleifkörper 16 tragen.The outside of the wheel rim 4 of the cup grinding wheel 1 is frustum-shaped by grooves 12 and 14 Segments 10 subdivided, which carry diamond grinding bodies 16 on their square end faces.

Die parallel zueinander verlaufenden Rillen 12 und die sie schneidenden Rillen 14 lassen sich in einem Arbeitsgang herstellen durch ein sogenanntes Rollieren, wenn der Grundkörper der Topfschleifscheibe 1 beispielsweise aus Leichtmetall wie Aluminium besteht.The grooves 12 which run parallel to one another and the grooves 14 which cut them can be produced in one operation by so-called rolling if the base body of the cup grinding wheel 1 is made, for example, of light metal such as aluminum.

Die Rillen 12 und 14 haben jeweils einen V - förmigen Querschnitt, das heißt ihre Seitenwände sind schräg zueinander gerichtet. Jedoch sind die Rillen 12 tiefer als die Rillen 14, wie sich aus den Angaben T1 und T2 in Figur 4 ergibt.The grooves 12 and 14 each have a V-shaped cross section, that is to say their side walls are directed obliquely to one another. However, the grooves 12 are deeper than the grooves 14, as can be seen from the information T1 and T2 in FIG. 4.

Für die Ausbildung von Kühlmittelkanälen 18 zum Zwecke der Zufuhr von Kühlmitteln sind beim dargestellten Ausführungsbeispiel zwei ringförmige Nuten 20 und 22 auf der Innenseite des Scheibenkranzes 4 angeordnet. Diese Nuten 20 und 22 sind so tief, daß sie die tiefen Rillen 12 schneiden, jedoch nicht die weniger tiefen Rillen 14. Dadurch werden längliche schmale Kühlmittelkanäle 18 geschaffen im Schnittpunkt zwischen den tiefen Rillen 12 und den Nuten 20 und 22.For the formation of coolant channels 18 for the purpose of supplying coolant, two annular grooves 20 and 22 are arranged on the inside of the disk ring 4 in the illustrated embodiment. These grooves 20 and 22 are so deep that they intersect the deep grooves 12, but not the less deep grooves 14. This creates elongated, narrow coolant channels 18 at the intersection between the deep grooves 12 and the grooves 20 and 22.

Die Anzahl und Verteilung dieser Kühlmittelkanäle 18 ist entsprechend Figur 5 abhängig von der Anzahl der Nuten 20 bzw. 22 und der Anzahl bzw. dem Abstand der tieferen Rillen 12. Dementsprechend ist auch die örtliche Zuordnung der Kühlmittelkanäle 18 zu den einzelnen Segmenten 10 abhängig von der Lage der Nuten 20 bzw. 22.According to FIG. 5, the number and distribution of these coolant channels 18 is dependent on the number of grooves 20 or 22 and the number or spacing of the deeper grooves 12. Accordingly, the local assignment of the coolant channels 18 to the individual segments 10 is dependent on the position of the grooves 20 and 22, respectively.

Entsprechend Figur 5 verläuft die Nut 20 unterhalb der Mitte der einzelnen Segmente 10, so daß sich Kühlmittelkanäle 18 ergeben, die zwischen vier aneinandergrenzenden Segmente liegen. Anders liegen die Verhältnisse bei der seitlich zu den Segmenten 10 versetzt angeordneten Nut 22 durch die Kühlmittelkanäle 18 geschaffen werden, welche jeweils zwischen zwei Segmenten liegen.According to FIG. 5, the groove 20 runs below the center of the individual segments 10, so that coolant channels 18 result which lie between four adjacent segments. The situation is different in the case of the groove 22 arranged laterally offset with respect to the segments 10 through the coolant channels 18, which each lie between two segments.

Es ist damit leicht erkennbar, daß die Anzahl und Verteilung sowie Lage der Kühlmittelkanäle abhängig ist von der Anzahl der Rillen und damit der Anzahl der Segmente und daß es ohne weiteres möglich ist, durch eine entsprechende Anzahl von Nuten soviel Kühlkanäle zu schaffen, wie die Schleifscheibe Segmente trägt, ohne daß es dazu eines größeren Aufwandes bedarf. Andererseits besteht die Möglichkeit anstelle einer hohen Anzahl von Kühlmittelkanälen 18 eine geringere Anzahl vorzusehen, jedoch von verhältnismäßig langen Kühlmittelkanälen durch eine entsprechend breite Ausbildung der Nuten 20 bis 22. In der Praxis hat sich dabei eine Größenordnung von 1 bis 5 mm für die Breite der Nuten als geeignet gezeigt.It is thus easy to see that the number and distribution and location of the coolant channels depend on the number of grooves and thus the number of segments and that it is easily possible to create as many cooling channels as the grinding wheel by means of a corresponding number of grooves Carries segments without requiring a major effort. On the other hand, it is possible to provide a smaller number instead of a large number of coolant channels 18, but of relatively long coolant channels due to a correspondingly wide design of the grooves 20 to 22. In practice, the width of the grooves has an order of magnitude of 1 to 5 mm shown as suitable.

In allen möglichen Ausführungsvarianten läßt sich der Vorteil nutzen, daß auch bei großen Eingriffslängen der Schleifscheibe, das heißt bei solchen Anwendungen, bei denen ein größerer Sektor des Umfanges der Schleifscheibe im Eingriff steht mit dem zu behandelnden Werkstück, ohne größeren technischen Aufwand durch eine entsprechende Anzahl von Kühlmittelkanälen einerseits eine ausreichende Kühlung zu erzielen ist und andererseits ein optimales Freispülen der Spankammern zwischen den Segmenten.In all possible design variants, the advantage can be exploited that even with large engagement lengths of the grinding wheel, that is to say in those applications in which a larger sector of the circumference of the grinding wheel is in engagement with the workpiece to be treated, without a great technical outlay by a corresponding number of coolant channels, on the one hand, sufficient cooling can be achieved and, on the other hand, optimal flushing of the chip chambers between the segments.

Claims (8)

  1. Grinding wheel which bears, on its cylindrical outer face, segments (10), which are separated by channels (12, 14), which are coated with abrasive grains (16), characterized in that annular grooves (20, 22), which cut the channels (12, 14) to form cooling channels (18), are placed on the internal side.
  2. Grinding wheel according to claim 1, characterized in that the channels (12, 14) intersect crosswise and are oblique to the outer edge (24) of the grinding wheel (1).
  3. Grinding wheel according to claim 1, characterized in that channels (12) which are parallel to each other are configured deeper than the channels (14) which intersect and the grooves (20, 22) intersect the deeper chanels (12).
  4. Grinding wheel according to claim 1, characterized in that the grooves (20, 22) have a width of 1 to 5 mm.
  5. Grinding wheel according to claim 1, characterized in that the distance of the grooves (20, 22) corresponds to the distance of the segment rows.
  6. Grinding wheel according to claim 1, characterized in that the grooves (20, 22) are situated under the middle of the segments (12).
  7. Grinding wheel according to claim 1, characterized in that the channels (12, 14) have a V-shaped section and the segments (10) are pyramidal.
  8. Grinding wheel according to claim 1, characterized in that the grinding wheel is configured as a cup wheel.
EP91120604A 1991-03-23 1991-11-29 Grinding wheel Expired - Lifetime EP0505615B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4109647A DE4109647A1 (en) 1991-03-23 1991-03-23 GRINDING WHEEL
DE4109647 1991-03-23

Publications (2)

Publication Number Publication Date
EP0505615A1 EP0505615A1 (en) 1992-09-30
EP0505615B1 true EP0505615B1 (en) 1994-05-11

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Application Number Title Priority Date Filing Date
EP91120604A Expired - Lifetime EP0505615B1 (en) 1991-03-23 1991-11-29 Grinding wheel

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EP (1) EP0505615B1 (en)
DE (2) DE4109647A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG119140A1 (en) * 2001-07-04 2006-02-28 Disco Corp Grinding wheel

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3009565B2 (en) * 1993-08-18 2000-02-14 洋 橋本 Grinding tool
FR2752762B1 (en) * 1996-08-29 1998-10-02 Snecma GRINDING WHEEL WITH BUILT-IN WATERING
DE19734793A1 (en) * 1997-08-11 1999-02-18 Kopp Werkzeugmasch Gmbh Grinding wheel
FR2793181B1 (en) * 1999-05-06 2001-06-22 Snecma GRINDING WHEEL AND LATERAL LUBRICATION SYSTEM
DE10361895B4 (en) * 2003-12-30 2013-02-07 Technische Universität Kaiserslautern High-performance grinding wheel
GB2435440A (en) * 2006-02-22 2007-08-29 Siemens Ag A grinding wheel
CN102658525A (en) * 2012-05-22 2012-09-12 河海大学常州校区 Grinding wheel for grinding heat exchange and heat exchange method thereof
CN105751087B (en) * 2016-05-05 2019-04-05 珠海市巨海科技有限公司 Ceramet binding agent grinder and its manufacturing method
CN106607773B (en) * 2016-07-01 2019-04-09 台山市兰宝磨具有限公司 Grinding tool with radiator structure
CN108393815B (en) * 2018-05-03 2023-07-14 西安增材制造国家研究院有限公司 Grinding device of grinding wheel with surface brazed abrasive particles and lubricant sprayed inside
KR20220115979A (en) * 2020-01-13 2022-08-19 징신 송 Electroplated steel wire toothed combination grinding wheel
CN113089397A (en) * 2021-04-13 2021-07-09 中铁隆昌铁路器材有限公司 Quick edging rail-unfired steel rail grinding wheel

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FR1104941A (en) * 1954-05-19 1955-11-25 Development of grinding wheels, in particular diamond wheels
DE1700813U (en) * 1954-10-01 1955-06-23 Hopf Ringleb & Co ROTATING GRINDING DEVICE, ESPECIALLY FOR DENTAL PURPOSES.
DE1105308B (en) * 1959-03-07 1961-04-20 Curt Stoll K G Air-cooled belt roll for belt grinding machines
DE2425179A1 (en) * 1973-05-31 1975-01-02 Pramet N P Z Praskove Metalurg GRINDING WHEEL
DE7601299U1 (en) * 1976-01-20 1976-05-13 Guenter Effgen Jes-Diamantmetall, 6581 Herrstein GRINDING DISC O.DGL.
ZA801174B (en) * 1979-03-09 1981-02-25 De Beers Ind Diamond Circular saws
DE3016075A1 (en) * 1980-04-25 1981-10-29 Fa. August Rüggeberg, 5277 Marienheide Grinder body with head and spindle - has head recess and spindle end tapering at same angle
DE3804781A1 (en) * 1987-02-28 1989-06-01 Zahnradfabrik Friedrichshafen Abrasive wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG119140A1 (en) * 2001-07-04 2006-02-28 Disco Corp Grinding wheel

Also Published As

Publication number Publication date
DE4109647A1 (en) 1992-09-24
DE59101616D1 (en) 1994-06-16
EP0505615A1 (en) 1992-09-30

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