EP3278927A1 - Cutting disk - Google Patents
Cutting disk Download PDFInfo
- Publication number
- EP3278927A1 EP3278927A1 EP17180725.8A EP17180725A EP3278927A1 EP 3278927 A1 EP3278927 A1 EP 3278927A1 EP 17180725 A EP17180725 A EP 17180725A EP 3278927 A1 EP3278927 A1 EP 3278927A1
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- EP
- European Patent Office
- Prior art keywords
- cutting disc
- cutting
- mixture
- grain
- disc
- 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.)
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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
- B24D5/12—Cut-off wheels
-
- 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
- B24D5/02—Wheels in one piece
- B24D5/04—Wheels in one piece with reinforcing means
-
- 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
- B24D5/14—Zonally-graded wheels; Composite wheels comprising different abrasives
Definitions
- the invention relates to a cutting disk, in particular for use in the metal-producing industry, having an outer edge, a central bore for connecting the cutting disk to a rotary drive for rotating the cutting disk about an axis of rotation through the central bore and a mixture of abrasive grain, at least one binder and optionally fillers wherein the mixture extends from the outer edge of the cutting disc to the central bore, and wherein the cutting disc has a diameter of 1000 mm to 2000 mm and a mean disc thickness.
- the invention further relates to a method for producing such a cutting disk.
- Such cutting discs are already known from the prior art and are used for example in the EP 1 332 834 A1 described. They are used, for example, in the steel industry for cutting slabs.
- the ratio of diameter to average, that is average slice thickness is approximately 100: 1. This means that it is relatively thick cutting discs, which have a high waste, a large heat input into the workpiece to be machined, a high raw material cost and a high weight of the cutting disc result.
- the rotary drive of the cutting discs at the same time requires a high engine power.
- a thick cutting disc also means a high wear of the rotary drive and a large amount of waste after the consumption of the cutting disc.
- the objective technical task of the present invention is therefore to provide a cutting disk in which the disadvantages described are avoided or significantly reduced.
- Another object is to provide a suitable method for producing such a cutting disk.
- the cutting disc has a ratio of diameter to average thickness of at least 150: 1, preferably from 150: 1 to 250: 1.
- a ratio of diameter to average disk thickness allows a significant reduction of the average disk thickness with a constant diameter compared to the prior art. This results in less wastage, lower engine power, less machine wear, less heat input into the workpiece, lower blade weight, lower raw material costs, and a reduction in waste after consumable disc usage.
- mixture of abrasive grain does not necessarily mean that it must be a single type of abrasive grain. Rather, several types of abrasive grain may also be included in the mixture, with the abrasive grain types having chemical and / or physical properties can distinguish. It can also be provided that a first Schleifkornart present in the region of the central bore in the mixture and a second type of abrasive grain in the remaining part of the cutting disc.
- the cutting discs according to the invention may be provided to increase the lateral stability that the cutting disc is laterally provided in the region of the central bore with stabilizing elements, preferably steel sheets.
- the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, the abrasive grain has a grain size, and Abrasive grain on the side surfaces has a supernatant of less than half, preferably less than one third, the grain size.
- the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, and at least partially a fine grain layer is arranged on the two side surfaces.
- tissue layers in the cutting disc there is another measure to increase the lateral stability is to incorporate tissue layers in the cutting disc, a person skilled in the art has been assumed that three to four layers of fabric are necessary, whereas in the cutting disc according to the invention already one or two layers of fabric, preferably made of glass fibers, can cause a significant increase in the lateral stabilization.
- protection is also desired for a process for producing a cutting disk, wherein it is provided according to the invention that the mixture of abrasive grain, at least one binder and optionally fillers applied to a first press plate, covered with a second press plate and by applying pressure to the is compressed two pressing plates.
- the press plates it is possible to produce very smooth side surfaces with the advantages described above.
- the in the FIG. 1 1 has an outer edge 2 and a central bore 3 for connecting the cutting disc 1 to a rotary drive for rotating the cutting disk 1 about a through the central bore 3 extending axis of rotation 4 (see also in the FIG. 2 illustrated cross-sectional view along the cross-sectional plane 24).
- clamping flanges 23 may be provided, which are not integral part of the blade 1.
- the cutting wheel 1 further comprises a mixture of abrasive grain 5, at least one binder 6 and optionally abrasive fillers, wherein the mixture from the outer edge 2 of the blade 1 extends to the central bore 3.
- the cutting disk 1 finally has a diameter 7 of 1000 mm to 2000 mm and a mean disk thickness 8.
- the term "average disk thickness” is averaged over the radius, average To understand disc thickness. Namely, it can be provided that the cutting disk 1 runs conically from the central bore 3 to the outer edge 2, that is to say that the thickness of the disk increases from the central bore 3 in the radial direction 18 to the outer edge 2.
- the disk thickness in the region of the central bore 3 with the reference numeral 20 the disk thickness at the outer edge 2 by the reference numeral 21 and the average disk thickness by the reference numeral 8.
- FIG. 2 also denotes a first side surface 11 and an opposite second side surface 12, wherein the axis of rotation 4 of the cutting disk 1 is aligned substantially normal to the two side surfaces 11 and 12.
- a cutting disc 1 according to the prior art is shown, wherein this cutting disc 1 has an inner disc thickness 20 of 11 mm, an outer disc thickness 21 of 13 mm and an average disc thickness of 12 mm. At a diameter 7 of 1250 mm results in this cutting disc 1 according to the prior art, a ratio of diameter 7 to average thickness 8 of about 100: 1.
- the cutting disc 1 according to the prior art is composed of four layers 25, which are separated by three layers of tissue 22 from each other.
- FIG. 3 is also an area of the blade 1 is shown enlarged. Schematically indicated is the mixture of abrasive grain 5 and a binder 6.
- the projection 13 of the abrasive grain 5 on the side surfaces 11 and 12 is equal to or greater than half the average grain size 10 of the abrasive grain 5.
- the side surfaces 11 and 12 have a relatively high roughness on.
- the cutting wheel 1 an inner disk thickness 20 of the 7th mm, an outer disk thickness 21 of 9 mm, an average disk thickness 8 of 8 mm and a diameter 7 of 1250 mm.
- the inner pane thickness 20 is 7 mm, the outer pane thickness 21 9 mm, the average pane thickness 8 8 mm and the diameter 7 2000 mm, resulting in an overall ratio of diameter 7 to average disk thickness 8 of 250: 1.
- any intermediate relationship can be realized by an appropriate vote of the diameter and the average thickness of the disc.
- the cutting disk 1 has a reduced projection 13 of less than half, preferably less than one third of the mean grain size 10, in comparison with the prior art. This results in very smooth side surfaces 11 and 12th
- the blade 1 according to the in the FIG. 4 illustrated embodiment has only two layers of fabric 22, which divide the blade 1 in three layers 25.
- each have a fine grain layer 14 is arranged with a thickness 15 of 5% of the average thickness of the disc 8 1.
- the fine grain layer 14 has abrasive grain 5 with a grain size 10 or larger equal to 24 mesh, preferably with a grain size of 10 from 24 mesh to 46 mesh.
- the remainder of the abrasive grain 5 has a grain size 10 of 15 to 20 mesh, preferably a 50/50 blend of 10 grain size of 16 mesh and 20 mesh.
- FIG. 6 illustrated embodiment of the invention differs from that in the FIG. 5 illustrated embodiment mainly in that in the region of the central bore 3 on the side surfaces 11 and 12 of the cutting disc 1 steel sheets 9 are incorporated. These cause an increased lateral stability. In this case, the fine grain layer 14 thus extends from the steel sheets 9 to the outer edge 2.
- the cutting disc 1 on the two side surfaces 11 and 12 an annular edge portion 16 with an increased roughness.
- the fine grain layers 14 extend in this case only from the central bore 3 to this annular edge portion 16.
- FIG. 8 illustrated embodiment differs from that in the FIG. 7 illustrated embodiment in that in addition two steel sheets 9 are arranged in the region of the central bore 3 on the side surfaces 11 and 12.
- the fine grain layer 14 extends in this case in a center region 17 spaced from the central bore 3 and the outer edge 2.
- the cutting disk 1 corundum and / or silicon carbide as abrasive grain 5 and / or synthetic resin as a binder 6 have.
- FIG. 9 shows a flowchart illustrating a preferred embodiment of the method 19 according to the invention for producing a cutting wheel 1:
- a first press plate is provided.
- a fine grain layer 14 and / or at least one stabilizing element 9 in the form of a steel sheet is applied at least in some areas.
- This optional method step is provided with the reference numeral 27.
- a mixture of abrasive grain 5, at least one binder 6 and optionally fillers is applied. This process step is provided with the reference numeral 28.
- the method step 29 is again optional and consists in that, depending on the embodiment to be produced, a fine grain layer 14 and / or at least one stabilizing element 9 in the form of a steel sheet is applied to the mixture at least in regions.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Trennscheibe (1), insbesondere zum Einsatz in der metallerzeugenden Industrie, mit einem Außenrand (2), einer Mittelbohrung (3) zur Anbindung der Trennscheibe (1) an einen Drehantrieb zum Drehen der Trennscheibe (1) um eine durch die Mittelbohrung (3) verlaufende Drehachse (4) und einer Mischung aus Schleifkorn (5), wenigstens einem Bindemittel (6) und gegebenenfalls Füllstoffen, wobei die Mischung vom Außenrand (2) der Trennscheibe (1) bis an die Mittelbohrung (3) reicht, und wobei die Trennscheibe (1) einen Durchmesser (7) von 1000 mm bis 2000 mm und eine mittlere Scheibenstärke (8) aufweist, wobei die Trennscheibe (1) ein Verhältnis von Durchmesser (7) zu mittlerer Scheibenstärke (8) von mindestens 150:1, vorzugsweise von 150:1 bis 250:1, aufweist. Cutting disc (1), in particular for use in the metal-producing industry, having an outer edge (2), a central bore (3) for connecting the cutting disc (1) to a rotary drive for rotating the cutting disc (1) around the center hole (3) extending axis of rotation (4) and a mixture of abrasive grain (5), at least one binder (6) and optionally fillers, wherein the mixture from the outer edge (2) of the blade (1) extends to the central bore (3), and wherein the blade (1) has a diameter (7) of 1000 mm to 2000 mm and a mean disc thickness (8), wherein the cutting disc (1) has a ratio of diameter (7) to average disc thickness (8) of at least 150: 1, preferably 150: 1 to 250: 1.
Description
Die Erfindung betrifft eine Trennscheibe, insbesondere zum Einsatz in der metallerzeugenden Industrie, mit einem Außenrand, einer Mittelbohrung zur Anbindung der Trennscheibe an einen Drehantrieb zum Drehen der Trennscheibe um eine durch die Mittelbohrung verlaufende Drehachse und einer Mischung aus Schleifkorn, wenigstens einem Bindemittel und gegebenenfalls Füllstoffen, wobei die Mischung vom Außenrand der Trennscheibe bis an die Mittelbohrung reicht, und wobei die Trennscheibe einen Durchmesser von 1000 mm bis 2000 mm und eine mittlere Scheibenstärke aufweist. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung einer solchen Trennscheibe.The invention relates to a cutting disk, in particular for use in the metal-producing industry, having an outer edge, a central bore for connecting the cutting disk to a rotary drive for rotating the cutting disk about an axis of rotation through the central bore and a mixture of abrasive grain, at least one binder and optionally fillers wherein the mixture extends from the outer edge of the cutting disc to the central bore, and wherein the cutting disc has a diameter of 1000 mm to 2000 mm and a mean disc thickness. The invention further relates to a method for producing such a cutting disk.
Solche Trennscheiben sind aus dem Stand der Technik bereits bekannt und werden beispielsweise in der
Vor dem Hintergrund dieser Nachteile besteht ein lang gehegter Wunsch darin, große Trennscheiben mit einer kleinen mittleren Scheibenstärke zu konstruieren. Es gibt hier auch bereits erste Ansätze, allerdings erfordern diese einen hohen technischen Aufwand (vergleiche beispielsweise die in der
Die objektive technische Aufgabe der vorliegenden Erfindung besteht also darin, eine Trennscheibe anzugeben, bei welcher die beschriebenen Nachteile vermieden bzw. signifikant reduziert werden. Eine weitere Aufgabe besteht darin, ein geeignetes Verfahren zur Herstellung einer solchen Trennscheibe anzugeben.The objective technical task of the present invention is therefore to provide a cutting disk in which the disadvantages described are avoided or significantly reduced. Another object is to provide a suitable method for producing such a cutting disk.
Diese Aufgaben werden gelöst durch die Merkmale der unabhängigen Ansprüche 1 und 13.These objects are achieved by the features of
Es ist also erfindungsgemäß vorgesehen, dass die Trennscheibe ein Verhältnis von Durchmesser zu mittlerer Scheibenstärke von mindestens 150:1, vorzugsweise von 150:1 bis 250:1, aufweist. Ein solches Verhältnis von Durchmesser zu mittlerer Scheibenstärke erlaubt eine signifikante Reduktion der mittleren Scheibenstärke bei im Vergleich zum Stand der Technik gleichbleibendem Durchmesser. Dies hat einen geringeren Verschnitt, eine geringere Motorleistung, einen geringeren Maschinenverschleiß, weniger Wärmeeintrag in das Werkstück, ein geringeres Gewicht der Trennscheibe, einen geringeren Rohstoffaufwand und eine Reduzierung des Abfalls nach dem Verbrauch der Trennscheibe zur Folge.It is thus provided according to the invention that the cutting disc has a ratio of diameter to average thickness of at least 150: 1, preferably from 150: 1 to 250: 1. Such a ratio of diameter to average disk thickness allows a significant reduction of the average disk thickness with a constant diameter compared to the prior art. This results in less wastage, lower engine power, less machine wear, less heat input into the workpiece, lower blade weight, lower raw material costs, and a reduction in waste after consumable disc usage.
Das erfindungsgemäße Verhältnis von Durchmesser zu mittlerer Scheibenstärke bei Trennscheiben gemäß dem Oberbegriff des Anspruchs 1 schien der Fachwelt nicht erreichbar zu sein. Die vorliegende Erfindung bricht mit diesem Vorurteil.The ratio of diameter to average thickness of cutting wheels according to the preamble of
Die Angabe "Mischung aus Schleifkorn" bedeutet nicht zwingend, dass es sich um eine einzige Art eines Schleifkorns handeln muss. Es können vielmehr auch mehrere Schleifkornarten in der Mischung enthalten sein, wobei sich die Schleifkornarten in ihren chemischen und/oder physikalischen Eigenschaften unterscheiden können. Es kann auch vorgesehen sein, dass eine erste Schleifkornart im Bereich der Mittelbohrung in der Mischung vorliegt und eine zweite Schleifkornart im übrigen Teil der Trennscheibe.The term "mixture of abrasive grain" does not necessarily mean that it must be a single type of abrasive grain. Rather, several types of abrasive grain may also be included in the mixture, with the abrasive grain types having chemical and / or physical properties can distinguish. It can also be provided that a first Schleifkornart present in the region of the central bore in the mixture and a second type of abrasive grain in the remaining part of the cutting disc.
Obgleich dies bei den erfindungsgemäßen Trennscheiben nicht zwingend notwendig ist, so kann es zur Erhöhung der seitlichen Stabilität vorgesehen sein, dass die Trennscheibe seitlich im Bereich der Mittelbohrung mit Stabilisierungselementen, vorzugsweise Stahlblechen, versehen ist.Although this is not absolutely necessary in the case of the cutting discs according to the invention, it may be provided to increase the lateral stability that the cutting disc is laterally provided in the region of the central bore with stabilizing elements, preferably steel sheets.
Alternativ oder ergänzend kann es zur Erhöhung der seitlichen Stabilität der Trennscheibe vorgesehen sein, dass die Trennscheibe eine erste Seitenfläche und eine gegenüberliegende zweite Seitenfläche aufweist, die Drehachse der Trennscheibe im Wesentlichen normal zu den beiden Seitenflächen ausgerichtet ist, das Schleifkorn eine Korngröße aufweist, und das Schleifkorn an den Seitenflächen einen Überstand von weniger als der Hälfte, vorzugsweise von weniger als einem Drittel, der Korngröße aufweist.Alternatively or additionally, it can be provided to increase the lateral stability of the cutting disc, that the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, the abrasive grain has a grain size, and Abrasive grain on the side surfaces has a supernatant of less than half, preferably less than one third, the grain size.
Damit weist die Trennscheibe im Vergleich zum Stand der Technik sehr glatte Seitenflächen auf. Bisher war man davon ausgegangen, dass die Seitenflächen einer großen Trennscheibe eine gewisse Rauheit (Gefüge) aufweisen müssen, damit die Trennscheibe auch an den Seiten eine entsprechende Schleifleistung hat, sich dadurch frei schleift und nicht im Werkstück verklemmt. Hingegen hat man nun in überraschender Weise erkannt, dass sehr glatte Seitenflächen neben der angesprochenen seitlichen Stabilisierung der Trennscheibe zu einer Steigerung der Steifigkeit führen, die Kerbwirkung verringern und damit insgesamt zu Trennscheiben führen, die beständiger gegen Rissbildung sind.Thus, the cutting disc in comparison to the prior art on very smooth side surfaces. So far, it was assumed that the side surfaces of a large cutting disc must have a certain roughness (texture), so that the cutting disc also has a corresponding grinding performance on the sides, thereby free-grinding and not jammed in the workpiece. By contrast, it has now surprisingly been recognized that very smooth side surfaces in addition to the mentioned lateral stabilization of the cutting disc lead to an increase in rigidity, reduce the notch effect and thus lead to a total of cutting wheels that are more resistant to cracking.
Diese Effekte können noch weiter dadurch verstärkt werden, dass die Trennscheibe eine erste Seitenfläche und eine gegenüberliegende zweite Seitenfläche aufweist, die Drehachse der Trennscheibe im Wesentlichen normal zu den beiden Seitenflächen ausgerichtet ist, und an den beiden Seitenflächen zumindest bereichsweise eine Feinkornschicht angeordnet ist.These effects can be further enhanced by the fact that the cutting disc has a first side surface and an opposite second side surface, the axis of rotation of the cutting disc is aligned substantially normal to the two side surfaces, and at least partially a fine grain layer is arranged on the two side surfaces.
Und schließlich besteht eine weitere Maßnahme zur Erhöhung der seitlichen Stabilität darin, Gewebelagen in die Trennscheibe einzuarbeiten, wobei ein Fachmann bisher davon ausgegangen ist, dass drei bis vier Gewebelagen notwendig sind, wohingegen bei der erfindungsgemäßen Trennscheibe bereits eine oder zwei Gewebelagen, vorzugsweise aus Glasfasern, eine deutliche Erhöhung der seitlichen Stabilisierung bewirken können.And finally, there is another measure to increase the lateral stability is to incorporate tissue layers in the cutting disc, a person skilled in the art has been assumed that three to four layers of fabric are necessary, whereas in the cutting disc according to the invention already one or two layers of fabric, preferably made of glass fibers, can cause a significant increase in the lateral stabilization.
Weitere vorteilhafte Ausbildungen der Trennscheibe sind in den abhängigen Ansprüchen 3, 6-9 sowie 11 und 12 definiert.Further advantageous embodiments of the cutting disc are defined in the
Wie eingangs ausgeführt, wird auch Schutz begehrt für ein Verfahren zur Herstellung einer Trennscheibe, wobei es erfindungsgemäß vorgesehen ist, dass die Mischung aus Schleifkorn, wenigstens einem Bindemittel und gegebenenfalls Füllstoffen auf einer ersten Pressplatte aufgebracht, mit einer zweiten Pressplatte abgedeckt und durch Druckausübung auf die beiden Pressplatten verdichtet wird. Durch die Verwendung der Pressplatten ist es möglich, sehr glatte Seitenflächen mit den weiter oben beschriebenen Vorteilen zu erzeugen.As already mentioned, protection is also desired for a process for producing a cutting disk, wherein it is provided according to the invention that the mixture of abrasive grain, at least one binder and optionally fillers applied to a first press plate, covered with a second press plate and by applying pressure to the is compressed two pressing plates. By using the press plates, it is possible to produce very smooth side surfaces with the advantages described above.
Vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens sind in den Ansprüchen 13 und 15 definiert.Advantageous embodiments of the method according to the invention are defined in
Weitere Einzelheiten und Vorteile der Erfindung werden anhand der Figurenbeschreibung unter Bezugnahme auf die Zeichnungen im Folgenden erläutert. Darin zeigen:
Figuren 1 und 2- eine Trennscheibe in einer Draufsicht (
Figur 1 ) und in einer Querschnittsansicht (Figur 2 ) zur Illustration des allgemeinen Aufbaus der Trennscheibe, Figur 3- die Hälfte einer Trennscheibe im Querschnitt gemäß dem Stand der Technik,
Figur 4- die Hälfte einer Trennscheibe im Querschnitt gemäß einem ersten bevorzugten Ausführungsbeispiel der Erfindung,
Figur 5- die Hälfte einer Trennscheibe im Querschnitt gemäß einem zweiten bevorzugten Ausführungsbeispiel der Erfindung,
Figur 6- die Hälfte einer Trennscheibe im Querschnitt gemäß einem dritten bevorzugten Ausführungsbeispiel der Erfindung,
Figur 7- die Hälfte einer Trennscheibe im Querschnitt gemäß einem vierten bevorzugten Ausführungsbeispiel der Erfindung,
Figur 8- die Hälfte einer Trennscheibe im Querschnitt gemäß einem fünften bevorzugten Ausführungsbeispiel, und
Figur 9- ein bevorzugtes Ausführungsbeispiel des erfindungsgemäßen Verfahrens, veranschaulicht anhand eines Flussdiagrams.
- Figures 1 and 2
- a cutting disc in a plan view (
FIG. 1 ) and in a cross-sectional view (FIG. 2 ) to illustrate the general structure of the cutting disc, - FIG. 3
- half of a cutting disk in cross-section according to the prior art,
- FIG. 4
- half of a cutting disk in cross-section according to a first preferred embodiment of the invention,
- FIG. 5
- half of a cutting disk in cross-section according to a second preferred embodiment of the invention,
- FIG. 6
- half of a cutting disk in cross-section according to a third preferred embodiment of the invention,
- FIG. 7
- half of a cutting disk in cross-section according to a fourth preferred embodiment of the invention,
- FIG. 8
- the half of a cutting disk in cross-section according to a fifth preferred embodiment, and
- FIG. 9
- a preferred embodiment of the method according to the invention, illustrated by means of a flow chart.
Die in der
Die Trennscheibe 1 weist weiterhin eine Mischung aus Schleifkorn 5, wenigstens einem Bindemittel 6 und gegebenenfalls schleifaktiven Füllstoffen auf, wobei die Mischung vom Außenrand 2 der Trennscheibe 1 bis an die Mittelbohrung 3 reicht.The
Die Trennscheibe 1 weist schließlich einen Durchmesser 7 von 1000 mm bis 2000 mm auf und eine mittlere Scheibenstärke 8. Unter dem Ausdruck "mittlere Scheibenstärke" ist eine über den Radius gemittelte, durchschnittliche Scheibenstärke zu verstehen. Es kann nämlich vorgesehen sein, dass die Trennscheibe 1 von der Mittelbohrung 3 bis zum Außenrand 2 konisch verläuft, das heißt, dass die Scheibenstärke von der Mittelbohrung 3 in radialer Richtung 18 zum Außenrand 2 ansteigt. In der
Und schließlich sind in der
In der
Die Trennscheibe 1 gemäß dem Stand der Technik ist aus vier Schichten 25 aufgebaut, welche durch drei Gewebelagen 22 voneinander getrennt sind.The
In der
Gemäß dem in der
Gleichzeitig weist die Trennscheibe 1 - wie der vergrößerte Ausschnitt zeigt - einen im Vergleich zum Stand der Technik reduzierten Überstand 13 von weniger als der Hälfte, vorzugsweise von weniger als einem Drittel der mittleren Korngröße 10 auf. Dadurch ergeben sich sehr glatte Seitenflächen 11 und 12.At the same time, as the enlarged section shows, the
Die Trennscheibe 1 gemäß dem in der
Bei dem in der
Das in der
Bei dem in der
Das in der
Es sei noch darauf hingewiesen, dass die Trennscheibe 1 gemäß den erfindungsgemäßen Ausführungsbeispielen Korunde und/oder Siliziumkarbid als Schleifkorn 5 und/oder Kunstharz als Bindemittel 6 aufweisen.It should be noted that the
In einem ersten Verfahrensschritt 26 wird eine erste Pressplatte bereitgestellt.In a
Auf diese wird optional je nach herzustellendem Ausführungsbeispiel zumindest bereichsweise eine Feinkornschicht 14 und/oder wenigstens ein Stabilisierungselement 9 in Form eines Stahlblechs aufgebracht. Dieser optionale Verfahrensschritt ist mit dem Bezugszeichen 27 versehen.Optionally, depending on the exemplary embodiment to be produced, a
Anschließend wird eine Mischung aus Schleifkorn 5, wenigstens einem Bindemittel 6 und gegebenenfalls Füllstoffen aufgebracht. Dieser Verfahrensschritt ist mit dem Bezugszeichen 28 versehen.Subsequently, a mixture of
Der Verfahrensschritt 29 ist wiederum optional und besteht darin, dass je nach herzustellendem Ausführungsbeispiel zumindest bereichsweise eine Feinkornschicht 14 und/oder wenigstens ein Stabilisierungselement 9 in Form eines Stahlblechs auf die Mischung aufgebracht wird.The
Anschließend wird im Zuge des Verfahrensschritts 30 eine zweite Pressplatte appliziert und eine Verdichtung der Mischung durch Durckausübung auf die beiden Pressplatten hervorgerufen (Verfahrensschritt 31).Subsequently, in the course of
Gleichzeitig oder danach erfolgt eine Aushärtung der Trennscheibe 1 bei einer geeigneten Temperatur (Verfahrensschritt 32).At the same time or thereafter, a curing of the
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI201730983T SI3278927T1 (en) | 2016-08-04 | 2017-07-11 | Cutting disk |
PL17180725T PL3278927T3 (en) | 2016-08-04 | 2017-07-11 | Cutting disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50717/2016A AT518913B1 (en) | 2016-08-04 | 2016-08-04 | cutting wheel |
Publications (2)
Publication Number | Publication Date |
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EP3278927A1 true EP3278927A1 (en) | 2018-02-07 |
EP3278927B1 EP3278927B1 (en) | 2021-09-01 |
Family
ID=59381059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17180725.8A Active EP3278927B1 (en) | 2016-08-04 | 2017-07-11 | Cutting disk |
Country Status (5)
Country | Link |
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EP (1) | EP3278927B1 (en) |
AT (1) | AT518913B1 (en) |
ES (1) | ES2899358T3 (en) |
PL (1) | PL3278927T3 (en) |
SI (1) | SI3278927T1 (en) |
Citations (10)
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US2078354A (en) * | 1935-04-25 | 1937-04-27 | Norton Co | Abrasive article |
US2690632A (en) * | 1953-09-25 | 1954-10-05 | Allison Company | Abrasive cutting wheel |
US3526999A (en) * | 1968-08-08 | 1970-09-08 | Leopold Jagers | Cutting blades |
US3838543A (en) * | 1970-05-25 | 1974-10-01 | Norton Co | High speed cut-off wheel |
JPS63147264U (en) * | 1987-03-17 | 1988-09-28 | ||
EP1332834A1 (en) * | 2002-01-24 | 2003-08-06 | Tyrolit Schleifmittelwerke Swarovski KG | Cut-off wheel with lateral steel plates |
EP1611998A1 (en) * | 2004-07-03 | 2006-01-04 | August Rüggeberg GmbH & Co. KG | Cut-off wheel for stationary application |
JP2006082187A (en) * | 2004-09-16 | 2006-03-30 | Mitsubishi Materials Corp | Thin blade grinding wheel |
WO2007087820A1 (en) * | 2006-01-24 | 2007-08-09 | Dronco Ag | Grinding and/or cut-off disc, device for producing a grinding and/or cut-off disc and method of producing a grinding and/or cut-off disc |
WO2013184873A1 (en) * | 2012-06-06 | 2013-12-12 | Saint-Gobain Abrasives, Inc. | Small diameter cutting tool |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2814918A (en) * | 1956-06-07 | 1957-12-03 | Norton Co | Cut-off wheel |
-
2016
- 2016-08-04 AT ATA50717/2016A patent/AT518913B1/en active
-
2017
- 2017-07-11 ES ES17180725T patent/ES2899358T3/en active Active
- 2017-07-11 EP EP17180725.8A patent/EP3278927B1/en active Active
- 2017-07-11 PL PL17180725T patent/PL3278927T3/en unknown
- 2017-07-11 SI SI201730983T patent/SI3278927T1/en unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2078354A (en) * | 1935-04-25 | 1937-04-27 | Norton Co | Abrasive article |
US2690632A (en) * | 1953-09-25 | 1954-10-05 | Allison Company | Abrasive cutting wheel |
US3526999A (en) * | 1968-08-08 | 1970-09-08 | Leopold Jagers | Cutting blades |
US3838543A (en) * | 1970-05-25 | 1974-10-01 | Norton Co | High speed cut-off wheel |
JPS63147264U (en) * | 1987-03-17 | 1988-09-28 | ||
EP1332834A1 (en) * | 2002-01-24 | 2003-08-06 | Tyrolit Schleifmittelwerke Swarovski KG | Cut-off wheel with lateral steel plates |
EP1611998A1 (en) * | 2004-07-03 | 2006-01-04 | August Rüggeberg GmbH & Co. KG | Cut-off wheel for stationary application |
JP2006082187A (en) * | 2004-09-16 | 2006-03-30 | Mitsubishi Materials Corp | Thin blade grinding wheel |
WO2007087820A1 (en) * | 2006-01-24 | 2007-08-09 | Dronco Ag | Grinding and/or cut-off disc, device for producing a grinding and/or cut-off disc and method of producing a grinding and/or cut-off disc |
WO2013184873A1 (en) * | 2012-06-06 | 2013-12-12 | Saint-Gobain Abrasives, Inc. | Small diameter cutting tool |
Also Published As
Publication number | Publication date |
---|---|
SI3278927T1 (en) | 2022-01-31 |
AT518913B1 (en) | 2019-04-15 |
ES2899358T3 (en) | 2022-03-11 |
EP3278927B1 (en) | 2021-09-01 |
AT518913A1 (en) | 2018-02-15 |
PL3278927T3 (en) | 2022-01-17 |
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