EP1859905A2 - Fan-folded abrasive disc - Google Patents

Fan-folded abrasive disc Download PDF

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Publication number
EP1859905A2
EP1859905A2 EP06026974A EP06026974A EP1859905A2 EP 1859905 A2 EP1859905 A2 EP 1859905A2 EP 06026974 A EP06026974 A EP 06026974A EP 06026974 A EP06026974 A EP 06026974A EP 1859905 A2 EP1859905 A2 EP 1859905A2
Authority
EP
European Patent Office
Prior art keywords
edge
grinding wheel
wheel according
fan
grinding
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.)
Granted
Application number
EP06026974A
Other languages
German (de)
French (fr)
Other versions
EP1859905B1 (en
EP1859905A3 (en
Inventor
Olaf Schweitzer
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.)
August Rueggeberg GmbH and Co KG
Original Assignee
August Rueggeberg GmbH and Co KG
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 August Rueggeberg GmbH and Co KG filed Critical August Rueggeberg GmbH and Co KG
Priority to PL06026974T priority Critical patent/PL1859905T3/en
Priority to TW096114026A priority patent/TWI408026B/en
Priority to CA2586791A priority patent/CA2586791C/en
Priority to RU2007117362/02A priority patent/RU2424890C2/en
Priority to BRPI0702553-0A priority patent/BRPI0702553B1/en
Priority to MX2007006000A priority patent/MX2007006000A/en
Priority to AU2007202297A priority patent/AU2007202297B2/en
Priority to CN2007101048718A priority patent/CN101077571B/en
Priority to US11/752,632 priority patent/US7481699B2/en
Publication of EP1859905A2 publication Critical patent/EP1859905A2/en
Publication of EP1859905A3 publication Critical patent/EP1859905A3/en
Application granted granted Critical
Publication of EP1859905B1 publication Critical patent/EP1859905B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/008—Finishing manufactured abrasive sheets, e.g. cutting, deforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face

Definitions

  • Such a fan-grinding wheel is from the EP 1 142 673 B1 known.
  • the grinding blades are square. They have two mutually parallel straight edges and a concave and a convex edge.
  • the convex and the concave edges are each in the form of a circular arc whose radii are the same, but the centers of the radii are offset from each other on a line parallel to the straight edges.
  • the advantage of this embodiment of the grinding blades is that they can be cut without waste, so waste-free from a grinding belt with mutually parallel edges.
  • the abrasive flaps are mounted overlapping each other on the edge region of the support plate, whereby a portion of the outer edge of the abrasive flake package is formed by the convex edge of each abrasive flake.
  • the invention is based on the object, a fan-grinding wheel of the aforementioned kind so ausgestalten that their life is further increased.
  • the claims 7 and 8 give advantageous embodiments of the inner edge again, wherein the embodiment according to claim 7 has the advantage that the grinding blades can be cut to save space from a grinding belt.
  • the embodiment according to claim 8 is particularly preferred when the abrasive slats are not cut from ribbons from a roll, but from sheets, so there may be interleaved.
  • the claims 12 and 13 relate to the fact that the grinding lamellae have a true triangular shape, so that in each case two major edges, whether rectilinear or curved, intersect at an intersection.
  • the claims 14 and 15 relate to a particularly preferred embodiment, according to which the corners of the respective triangle are rounded, by convexly curved side edges whose radii of curvature are significantly smaller than the radii of curvature of the main edges.
  • the detachment of a triangular in the true sense abrasive slat from the strip material is more difficult than the detachment of a grinding blade with rounded corners.
  • the embodiments according to the Claims 12 on the one hand and 14 on the other hand also include hybrid forms between these two embodiments.
  • the grinding blade 1 shown in Fig. 1 is triangular. Their three edges are referred to as outer edge 2, inner edge 3 and trailing edge 4 according to their later position on a support plate of a fan grinding wheel.
  • the edges 2 to 4 are formed as circular arc sections with a corresponding radius of curvature R2, R3 and R4.
  • the outer edge 2 and the trailing edge 4 are - with respect to the grinding blade 1 - convex, while the inner edge 3 is concave.
  • Even with such geometric shapes are triangles, since according to the rules of spherical geometry, the boundary lines of a triangle need not be rectilinear, but can also be curved; It is crucial that two side edges intersect at one point of intersection, ie form a corner.
  • the support plate 5 has an outer annular edge region 8 for receiving the grinding blades 1.
  • This edge region 8 is connected to the hub 6 via a projecting in the direction of the central axis 9 of the support plate 5 annular web 10.
  • the edge region 8 is inclined radially outward against the annular web 10, as shown in FIG. 3 can be removed.
  • the working surface 11 of the grinding lamellae 1 to be arranged on the support plate 5 again runs essentially radially and perpendicular to the central axis 9.
  • This geometry results from the fact that more and more grinding lamellae 1 overlap or overlap one another from inside to outside, as FIG. 2 can be removed.
  • the grinding blades 1 are fastened on the edge region 8 of the support plate 5 by means of an adhesive layer 12.
  • the grinding blades 1 are arranged on the support plate 5 at equal angular intervals, in each case rotationally symmetrical in the same position to the support plate 5.
  • the radius of curvature R2 of the outer edge 2 is circular.
  • a grinding blade 1 is shown in dashed lines, although their respective abrasive region 15 extends only from its trailing edge 4 to the next in the direction of rotation 16 of the grinding wheel leading edge arranged 4.
  • the tangent 17 at the trailing edge 4 at the intersection 18 with the outer edge 2 and the radius R13 through the intersection 18 form an angle ⁇ > 0 °, the tangent 17 leading in the direction of rotation 16 with respect to the radius R13 ,
  • ⁇ is 5 ° ⁇ ⁇ ⁇ 35 °.
  • each grinding lamella 1 extends over an angle ⁇ of the annular abrasive lamella packet 13, where 25 ° ⁇ 90 °.
  • ⁇ the angle of the annular abrasive lamella packet 13
  • Fig. 4 it can be seen how the grinding blades 1 are cut from a grinding belt 20.
  • the width a of the sanding belt 20 is selected so that the intersection point 21 of the outer edge 2 and the inner edge 3 lies on a longitudinal edge 22 of the sanding belt 20, while the point of intersection 23 between the inner edge 3 and the trailing edge 4 on the other longitudinal edge parallel to the longitudinal edge 22 24 is located.
  • the point of intersection 18 between the outer edge 2 and the trailing edge 4 abuts against the inner edge 3 of the adjacent grinding blade 1 to be cut out.
  • FIGS. 5 to 7 Variants of the grinding lamellae are shown in FIGS. 5 to 7.
  • the grinding lamella 1 'shown in FIG. 5 has the already described outer edge 2 and trailing edge 4.
  • the inner edge 3 ' is formed in a straight line. Their radius of curvature R3 'is therefore infinitely long.
  • the grinding lamella 1 "illustrated there has an already described circular arc-shaped outer edge 2 and also a straight inner edge 3 'which is also described above
  • the trailing edge 4' is likewise of straight design, but for its arrangement on the carrier plate 5 the above statement on the angle ⁇ remains valid, the radius of curvature R4 'therefore has an infinite length
  • FIGS. 8 to 11 correspond in their basic structure to those of FIGS. 1, 5, 6, 7, wherein instead of the sharp-edged intersection points 18, 21, 23 respectively rounded corners are provided.
  • These abrasive slats thus each have the basic shape of a triangle.
  • the main edges forming outer edges, inner edges and trailing edges are thus connected to each other by convexly curved side edges whose radius of curvature r each is significantly smaller than the radius of curvature R of the mentioned main edges.
  • the main edges forming outer edges, inner edges and trailing edges are denoted in Figs. 8 to 11 with the same reference numerals as the corresponding edges in Figs. 1, 5, 6, 7, wherein in each case an "a" is added to distinguish. The same applies to the radii of curvature R.
  • the side edges are provided with the same reference numerals, as the intersections 18, 21, 23, wherein these are added to distinguish an "a". The same applies to the name of the radii of curvature r of the minor edges.
  • all three main edges namely the outer edge 2a, the inner edge 3a and the trailing edge 4a are curved, the outer edge 2a and the trailing edge 4a convex, while the inner edge 3a is concavely curved.
  • the radii of curvature are R2a, R4a and R3a.
  • the major edges are connected to each other by three side edges 18a, 21a and 23a, respectively, which are convexly curved and have radii of curvature r18a, r21a and r23a, respectively.
  • the grinding blade 1'a of FIG. 9 differs from that of FIG. 8 in that the inner edge 3'a is rectilinear and consequently the radius of curvature R3'a of this inner edge 3'a has an infinite length.
  • the grinding lamella 1 "a of FIG. 10 again differs from that of FIG. 9 in that also the trailing edge 4'a is rectilinear and consequently its radius of curvature R4'a has an infinite length.
  • the radii of curvature R of the main edges are significantly larger than the radii of curvature r of the minor edges.
  • the ratio of the radii of curvature R of the main edges to the radii of curvature applies r of the minor edges: 3 ⁇ R / r ⁇ 20 and preferably 10 ⁇ R / r ⁇ 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Power Steering Mechanism (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Surgical Instruments (AREA)

Abstract

The grinding wheel has grinding plates that form a triangle with an outer corner (2), an inner corner and a rear corner (4) in a basic form. The grinding plates are arranged in uniform angular distances on an edge region of a supporting disc under formation of a grinding plates-packet (13) such that the outer corner limits a part of an outer edge (14) of the packet, and the rear corner runs leadingly from an inner edge (19) to the outer edge of the packet with respect to a rotary direction (16), where the grinding plates-material is concentrated in a radial outer region of the packet.

Description

Die Erfindung betrifft eine Fächer-Schleifscheibe, die in einer Drehrichtung antreibbar ist,

  • mit einem Tragteller, der
    • -- eine Mittel-Achse,
    • -- eine innere Nabe und
    • -- einen ringförmigen Randbereich aufweist, und
  • mit Schleiflamellen, die
    • -- auf dem Randbereich unter Bildung eines ringförmigen Schleiflamellen-Pakets befestigt sind.
The invention relates to a fan-grinding disc which is drivable in one direction of rotation,
  • with a carrier plate, the
    • a center axis,
    • - an inner hub and
    • - Has an annular edge region, and
  • with grinding blades, the
    • - Are mounted on the edge region to form a ring-shaped abrasive lamella package.

Eine derartige Fächer-Schleifscheibe ist aus der EP 1 142 673 B1 bekannt. Bei dieser bekannten Fächer-Schleifscheibe sind die Schleiflamellen viereckig ausgebildet. Sie weisen zwei zueinander parallele gerade Kanten und eine konkave und eine konvexe Kante auf. Die konvexe und die konkave Kante sind jeweils in Form eines Kreisbogens ausgebildet, deren Radien gleich sind, wobei aber die Mittelpunkte der Radien auf einer zu den geraden Kanten parallelen Linie gegeneinander versetzt sind. Der Vorteil dieser Ausgestaltung der Schleiflamellen liegt darin, dass sie verschnittfrei, also abfallfrei aus einem Schleifband mit zueinander parallelen Kanten geschnitten werden können. Die Schleiflamellen werden auf dem Randbereich des Tragtellers einander überlappend befestigt, wobei durch die konvexe Kante jeder Schleiflamelle ein Abschnitt des Außenrandes des Schleiflamellen-Pakets gebildet wird.Such a fan-grinding wheel is from the EP 1 142 673 B1 known. In this known fan grinding wheel, the grinding blades are square. They have two mutually parallel straight edges and a concave and a convex edge. The convex and the concave edges are each in the form of a circular arc whose radii are the same, but the centers of the radii are offset from each other on a line parallel to the straight edges. The advantage of this embodiment of the grinding blades is that they can be cut without waste, so waste-free from a grinding belt with mutually parallel edges. The abrasive flaps are mounted overlapping each other on the edge region of the support plate, whereby a portion of the outer edge of the abrasive flake package is formed by the convex edge of each abrasive flake.

Der Erfindung liegt die Aufgabe zugrunde, eine Fächer-Schleifscheibe der eingangs genannten geschilderten Art so ausgestalten, dass ihre Standzeit weiter erhöht wird.The invention is based on the object, a fan-grinding wheel of the aforementioned kind so ausgestalten that their life is further increased.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. Durch die erfindungsgemäße Ausgestaltung wird erreicht, dass im radial äußeren Bereich des Schleiflamellen-Pakets besonders viel Schleiflamellen-Material konzentriert ist, wodurch eine besonders hohe Standzeit erreicht wird bei hoher Aggressivität, das heißt hoher Schleifintensität. Der beim Schneiden der Schleiflamellen anfallende Verschnitt wird in Kauf genommen, weil insgesamt - über die Lebensdauer der Fächer-Schleifscheibe betrachtet - wenig Schleifbandmaterial, also wenige Schleiflamellen, für eine Schleifaufgabe verbraucht wird. Insbesondere können durch die erfindungsgemäße Ausgestaltung auch die auf dem Tragteller befindlichen Schleiflamellen fast vollständig verbraucht werden, so dass nur wenig Abfall zu entsorgen ist.This object is achieved by the features of claim 1. Due to the configuration of the invention is achieved that in the radially outer region of the grinding blade package particularly much abrasive blade material is concentrated, whereby a particularly long service life is achieved with high aggressiveness, that is high grinding intensity. The waste produced when cutting the abrasive lamellae is accepted because overall - considered over the life of the fan grinding wheel - little abrasive belt material, so few sanding lamellae, is consumed for a grinding task. In particular, by the inventive design and the grinding plates located on the support plate can be almost completely consumed, so that only little waste is to be disposed of.

Die vorteilhafte Weiterbildung nach Anspruch 2 und insbesondere Anspruch 3 führt dazu, dass der Außenrand des Schleiflamellen-Pakets durch die Schleiflamellen sauber kreisförmig begrenzt wird. Selbstverständlich müssen der Außenradius des Schleiflamellen-Pakets und der Radius der gekrümmten Außenkante nicht absolut identisch, sondern nur im Wesentlichen gleich sein. Eine Ausgestaltung der Hinterkante nach Anspruch 4 ist grundsätzlich möglich und bietet Vorteile beim Zuschneiden der Schleiflamelle, da ein geradliniger Schnitt grundsätzlich einfacher durchzuführen ist als ein gekrümmter Schnitt, jedenfalls dann, wenn mit Stanz- oder Schneidmessern geschnitten wird. Die Ausgestaltung nach Anspruch 5 ist aber für den Schleifeinsatz vorteilhafter.The advantageous development according to claim 2 and in particular claim 3 results in that the outer edge of the grinding blade package is bounded by the grinding blades clean circular. Of course, the outer radius of the sanding lamella package and the radius of the curved outer edge need not be absolutely identical, but only substantially equal. An embodiment of the trailing edge according to claim 4 is basically possible and offers advantages when cutting the grinding blade, since a straight cut is basically easier to perform than a curved cut, at least when cut with punching or cutting blades. However, the embodiment according to claim 5 is more advantageous for the grinding insert.

Insbesondere die Weiterbildung nach Anspruch 6 führt dazu, dass der im Bereich der Hinterkante befindliche schleifaktive Bereich jeder Schleiflamelle von Anfang an eine optimale Form aufweist, was insbesondere in der Kombination mit der Ausgestaltung nach Anspruch 5 der Fall ist. Unter einem gegenüber dem Radius offenen Winkel ist hierbei zu verstehen, dass der Winkel in Drehrichtung gegenüber dem Radius voreilend ist.In particular, the development according to claim 6 results in that located in the region of the trailing edge abrasive active area of each grinding blade from the beginning has an optimal shape, which is particularly the case in combination with the embodiment according to claim 5. Under An angle that is open relative to the radius is to be understood here as meaning that the angle in the direction of rotation is leading with respect to the radius.

Die Ansprüche 7 und 8 geben vorteilhafte Ausgestaltungen der Innenkante wieder, wobei die Ausgestaltung nach Anspruch 7 den Vorteil hat, dass die Schleiflamellen platzsparend aus einem Schleifband geschnitten werden können. Die Ausgestaltung nach Anspruch 8 ist besonders dann zu bevorzugen, wenn die Schleiflamellen nicht aus Bändern von einer Rolle, sondern aus Bögen geschnitten werden, also dort ineinander verschachtelt sein können.The claims 7 and 8 give advantageous embodiments of the inner edge again, wherein the embodiment according to claim 7 has the advantage that the grinding blades can be cut to save space from a grinding belt. The embodiment according to claim 8 is particularly preferred when the abrasive slats are not cut from ribbons from a roll, but from sheets, so there may be interleaved.

Die Unteransprüche 9 bis 11 geben weitere vorteilhafte Ausgestaltungen wieder.The dependent claims 9 to 11 give further advantageous embodiments again.

Die Ansprüche 12 und 13 beziehen sich darauf, dass die Schleif-Lamellen eine echte Dreiecksform haben, dass also jeweils zwei Hauptkanten, gleichgültig ob geradlinig oder gekrümmt, sich in einem Schnittpunkt schneiden. Demgegenüber beziehen sich die Ansprüche 14 und 15 auf eine besonders bevorzugte Ausführungsform, wonach die Ecken des jeweiligen Dreiecks abgerundet sind, und zwar durch konvex gekrümmte Nebenkanten, deren Krümmungs-Radien deutlich kleiner sind als die Krümmungs-Radien der Hauptkanten. Der Vorteil dieser Ausgestaltung liegt darin, dass sowohl die Herstellung der Stanzwerkzeuge als auch das Herauslösen der Schleiflamellen nach dem Stanzen aus dem Bandmaterial vereinfacht wird. Die Herstellung echter spitzer Ecken bei den Stanzwerkzeugen ist aufwändiger. Auch das Herauslösen einer im echten Sinne dreieckigen Schleiflamelle aus dem Bandmaterial ist schwieriger als das Herauslösen einer Schleiflamelle mit abgerundeten Ecken. Die Ausgestaltungen nach den Ansprüchen 12 einerseits und 14 andererseits beinhalten ebenfalls Mischformen zwischen diesen beiden Ausgestaltungen.The claims 12 and 13 relate to the fact that the grinding lamellae have a true triangular shape, so that in each case two major edges, whether rectilinear or curved, intersect at an intersection. In contrast, the claims 14 and 15 relate to a particularly preferred embodiment, according to which the corners of the respective triangle are rounded, by convexly curved side edges whose radii of curvature are significantly smaller than the radii of curvature of the main edges. The advantage of this embodiment is that both the production of the punching tools and the detachment of the abrasive flaps after punching from the strip material is simplified. The production of real sharp corners in the punching tools is more complex. Also, the detachment of a triangular in the true sense abrasive slat from the strip material is more difficult than the detachment of a grinding blade with rounded corners. The embodiments according to the Claims 12 on the one hand and 14 on the other hand also include hybrid forms between these two embodiments.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnung. Es zeigt

Fig. 1
eine Schleiflamelle in Draufsicht,
Fig. 2
eine Fächer-Schleifscheibe nach der Erfindung in Draufsicht,
Fig. 3
einen Querschnitt durch die Fächer-Schleifscheibe nach Fig. 2
Fig. 4
ein Schleifband, aus dem nacheinander Schleiflamellen zu schneiden sind,
Fig. 5
eine abgewandelte Ausführungsform einer Schleiflamelle,
Fig. 6
eine weitere abgewandelte Ausführungsform einer Schleiflamelle,
Fig. 7
eine weitere abgewandelte Ausführungsform einer Schleiflamelle,
Fig. 8
eine der Darstellung in Fig. 1 ähnliche Schleiflamelle mit abgerundeten Ecken,
Fig. 9
eine der Darstellung in Fig. 5 ähnliche Schleiflamelle mit abgerundeten Ecken,
Fig. 10
eine der Darstellung in Fig. 6 ähnliche Schleiflamelle mit abgerundeten Ecken und
Fig. 11
eine der Darstellung in Fig. 7 ähnliche Schleiflamelle mit abgerundeten Ecken.
Further advantages, features and details of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing. It shows
Fig. 1
a grinding lamella in plan view,
Fig. 2
a fan grinding wheel according to the invention in plan view,
Fig. 3
a cross section through the fan-grinding wheel of FIG. 2
Fig. 4
a sanding belt from which sanding lamellae are to be cut successively,
Fig. 5
a modified embodiment of a grinding blade,
Fig. 6
a further modified embodiment of a grinding blade,
Fig. 7
a further modified embodiment of a grinding blade,
Fig. 8
1 similar to the illustration in FIG. Abrasive blade with rounded corners,
Fig. 9
a similar to the representation in Fig. 5 grinding blade with rounded corners,
Fig. 10
one of the illustration in Fig. 6 similar grinding blade with rounded corners and
Fig. 11
one of the illustration in Fig. 7 similar grinding blade with rounded corners.

Die in Fig. 1 dargestellte Schleiflamelle 1 ist dreieckförmig ausgebildet. Ihre drei Kanten werden entsprechend ihrer späteren Lage auf einem Tragteller einer Fächer-Schleifscheibe als Außenkante 2, Innenkante 3 und Hinterkante 4 bezeichnet. Die Kanten 2 bis 4 sind als Kreisbogen-Abschnitte ausgebildet mit einem entsprechenden Krümmungs-Radius R2, R3 bzw. R4. Die Außenkante 2 und die Hinterkante 4 sind - bezogen auf die Schleiflamelle 1 - konvex ausgebildet, während die Innenkante 3 konkav ausgebildet ist. Auch bei derartigen geometrischen Formen handelt es sich um Dreiecke, da nach den Regeln der sphärischen Geometrie die Begrenzungslinien eines Dreiecks nicht geradlinig sein müssen, sondern auch gekrümmt sein können; entscheidend ist, dass sich jeweils zwei Seitenkanten in einem Schnittpunkt schneiden, also eine Ecke bilden.The grinding blade 1 shown in Fig. 1 is triangular. Their three edges are referred to as outer edge 2, inner edge 3 and trailing edge 4 according to their later position on a support plate of a fan grinding wheel. The edges 2 to 4 are formed as circular arc sections with a corresponding radius of curvature R2, R3 and R4. The outer edge 2 and the trailing edge 4 are - with respect to the grinding blade 1 - convex, while the inner edge 3 is concave. Even with such geometric shapes are triangles, since according to the rules of spherical geometry, the boundary lines of a triangle need not be rectilinear, but can also be curved; It is crucial that two side edges intersect at one point of intersection, ie form a corner.

Wie sich aus den Fig. 2 und 3 ergibt, weist eine Fächer-Schleifscheibe einen Tragteller 5 mit einer Nabe 6 auf, die eine zentrische, kreisförmige Öffnung 7 aufweist. Der Tragteller 5 weist einen äußeren ringförmigen Randbereich 8 zur Aufnahme der Schleiflamellen 1 auf. Dieser Randbereich 8 ist mit der Nabe 6 über einen in Richtung der Mittel-Achse 9 des Tragtellers 5 vorspringenden Ringsteg 10 verbunden. Der Randbereich 8 ist radial nach außen entgegen dem Ringsteg 10 geneigt, wie Fig. 3 entnehmbar ist. Dies hat zur Folge, dass die Arbeitsfläche 11 der auf dem Tragteller 5 anzuordnenden Schleiflamellen 1 wieder im Wesentlichen radial und senkrecht zur Mittel-Achse 9 verläuft. Diese Geometrie ergibt sich daraus, dass von innen nach außen immer mehr Schleiflamellen 1 einander überlappen bzw. überdecken, wie Fig. 2 entnehmbar ist. Die Schleiflamellen 1 sind auf dem Randbereich 8 des Tragtellers 5 mittels einer KlebstoffSchicht 12 befestigt.As is apparent from FIGS. 2 and 3, a fan-grinding disc on a support plate 5 with a hub 6, which has a central, circular opening 7. The support plate 5 has an outer annular edge region 8 for receiving the grinding blades 1. This edge region 8 is connected to the hub 6 via a projecting in the direction of the central axis 9 of the support plate 5 annular web 10. The edge region 8 is inclined radially outward against the annular web 10, as shown in FIG. 3 can be removed. As a result, the working surface 11 of the grinding lamellae 1 to be arranged on the support plate 5 again runs essentially radially and perpendicular to the central axis 9. This geometry results from the fact that more and more grinding lamellae 1 overlap or overlap one another from inside to outside, as FIG. 2 can be removed. The grinding blades 1 are fastened on the edge region 8 of the support plate 5 by means of an adhesive layer 12.

Wie insbesondere Fig. 2 entnehmbar ist, sind die Schleiflamellen 1 auf dem Tragteller 5 in gleichen Winkelabständen angeordnet, und zwar jeweils drehsymmetrisch in gleicher Lage zum Tragteller 5. Bei dem in den Fig. 2 und 3 dargestellten Ausführungsbeispiel entspricht der Außen-Radius R13 des auf dem Tragteller 5 befestigten Schleiflamellen-Pakets 13 dem Krümmungs-Radius R2 der Außenkante 2, so dass der nach außen über den Randbereich 8 überstehende Außenrand 14 des Schleiflamellen-Pakets 13 kreisförmig ist.2, the grinding blades 1 are arranged on the support plate 5 at equal angular intervals, in each case rotationally symmetrical in the same position to the support plate 5. In the embodiment shown in FIGS. 2 and 3 corresponds to the outer radius R13 of On the support plate 5 fixed abrasive lamellae package 13 the radius of curvature R2 of the outer edge 2, so that the outwardly beyond the edge region 8 projecting outer edge 14 of the grinding lamella package 13 is circular.

In Fig. 2 ist eine Schleiflamelle 1 gestrichelt dargestellt, obwohl ihr jeweiliger schleifaktiver Bereich 15 sich nur von ihrer Hinterkante 4 bis zur nächsten in Drehrichtung 16 der Schleifscheibe voreilend angeordneten Hinterkante 4 erstreckt.In Fig. 2, a grinding blade 1 is shown in dashed lines, although their respective abrasive region 15 extends only from its trailing edge 4 to the next in the direction of rotation 16 of the grinding wheel leading edge arranged 4.

Wie weiterhin Fig. 2 entnehmbar ist, bilden die Tangente 17 an die Hinterkante 4 im Schnittpunkt 18 mit der Außenkante 2 und der Radius R13 durch den Schnittpunkt 18 einen Winkel α > 0°, wobei die Tangente 17 gegenüber dem Radius R13 in Drehrichtung 16 voreilt. Für diesen Winkel α gilt 5° ≤ α ≤ 35°.2, the tangent 17 at the trailing edge 4 at the intersection 18 with the outer edge 2 and the radius R13 through the intersection 18 form an angle α> 0 °, the tangent 17 leading in the direction of rotation 16 with respect to the radius R13 , For this angle α is 5 ° ≤ α ≤ 35 °.

Für dieses Ausführungsbeispiel gilt R2 ≃ R4 und R3 > R2 und R3 > R4. Dadurch, dass die Innenkante 3 - bezogen auf die Schleiflamelle 1 - konkav verläuft, ist die Zahl der Überlappungen benachbarter Schleiflamellen 1 im Bereich des Innenrandes 19 des Schleiflamellen-Pakets 13 deutlich geringer als im Außenbereich und nimmt erst nach außen hin deutlich zu, wie der schraffierten Fläche in Fig. 2 entnehmbar ist.For this embodiment, R2 ≃ R4 and R3> R2 and R3> R4. The fact that the inner edge 3 - with respect to the grinding blade 1 - is concave, is the number of overlaps of adjacent grinding lamellae 1 in the region of the inner edge 19 of the grinding lamella package 13 is significantly less than in the outer area and only increases towards the outside significantly, as the hatched area in Fig. 2 can be removed.

Wie weiterhin Fig. 2 entnehmbar ist, erstreckt sich die Außenkante 2 jeder Schleiflamelle 1 über einen Winkel β des kreisringförmigen Schleiflamellen-Pakets 13, wobei gilt 25° < β≤ 90°. Für die Zahl n der Schleiflamellen 1 gilt 10 ≤ n ≤ 80.2, the outer edge 2 of each grinding lamella 1 extends over an angle β of the annular abrasive lamella packet 13, where 25 ° <β≤90 °. For the number n of the grinding blades 1, 10 ≦ n ≦ 80.

Aus Fig. 4 ist ersichtlich, wie die Schleiflamellen 1 aus einem Schleifband 20 geschnitten werden. Die Breite a des Schleifbandes 20 ist so gewählt, dass der Schnittpunkt 21 der Außenkante 2 und der Innenkante 3 auf einem Längsrand 22 des Schleifbandes 20 liegt, während der Schnittpunkt 23 zwischen der Innenkante 3 und der Hinterkante 4 auf dem anderen zum Längsrand 22 parallelen Längsrand 24 liegt. Der Schnittpunkt 18 zwischen der Außenkante 2 und der Hinterkante 4 stößt an die Innenkante 3 der benachbart auszuschneidenden Schleiflamelle 1 an. Durch diese Art des Schneidens der Schleiflamellen 1 entstehen Zwickelverschnitt-Abschnitte 25, 26. Dieser Verschnitt führt zu keinem Nachteil, da die von außen nach innen - bezogen auf die Drehrichtung 16 - nacheilende Anordnung der Hinterkante 4 auf dem Tragteller 5 zu einem vom Schleifbeginn mit einer neuen Fächer-Schleifscheibe an optimalen, d. h. minimalen Abtrag von den Schleiflamellen 1 führt. Im Übrigen führt die konkave Ausgestaltung der Innenkante 3 zu einer Reduzierung des Verschnitts.From Fig. 4 it can be seen how the grinding blades 1 are cut from a grinding belt 20. The width a of the sanding belt 20 is selected so that the intersection point 21 of the outer edge 2 and the inner edge 3 lies on a longitudinal edge 22 of the sanding belt 20, while the point of intersection 23 between the inner edge 3 and the trailing edge 4 on the other longitudinal edge parallel to the longitudinal edge 22 24 is located. The point of intersection 18 between the outer edge 2 and the trailing edge 4 abuts against the inner edge 3 of the adjacent grinding blade 1 to be cut out. This cut leads to no disadvantage, since the from the outside inwards - with respect to the direction of rotation 16 - lagging arrangement of the trailing edge 4 on the support plate 5 to one from the start of grinding with a new fan-grinding wheel at optimal, d. H. minimal removal of the grinding blades 1 leads. Incidentally, the concave configuration of the inner edge 3 leads to a reduction of the crop.

Varianten der Schleiflamellen ergeben sich aus den Fig. 5 bis 7. Die in Fig. 5 dargestellte Schleiflamelle 1' weist die bereits geschilderte Außenkante 2 und Hinterkante 4 auf. Die Innenkante 3' ist aber geradlinig ausgebildet. Ihr Krümmungs-Radius R3' ist daher unendlich lang.Variants of the grinding lamellae are shown in FIGS. 5 to 7. The grinding lamella 1 'shown in FIG. 5 has the already described outer edge 2 and trailing edge 4. The inner edge 3 'is formed in a straight line. Their radius of curvature R3 'is therefore infinitely long.

Wie sich aus Fig. 6 ergibt, weist die dort dargestellte Schleiflamelle 1 " eine bereits geschilderte kreisbogenabschnittsförmige Außenkante 2 und eine ebenfalls vorstehend geschilderte geradlinige Innenkante 3' auf. Die Hinterkante 4' ist ebenfalls geradlinig ausgebildet, wobei aber für ihre Anordnung auf dem Tragteller 5 die obige Aussage zum Winkel α gültig bleibt. Der Krümmungs-Radius R4' hat daher eine unendliche Länge6, the grinding lamella 1 "illustrated there has an already described circular arc-shaped outer edge 2 and also a straight inner edge 3 'which is also described above The trailing edge 4' is likewise of straight design, but for its arrangement on the carrier plate 5 the above statement on the angle α remains valid, the radius of curvature R4 'therefore has an infinite length

Schließlich ergibt sich aus Fig. 7 noch die Ausgestaltung einer Schleiflamelle 1"', bei der nicht nur die Innenkante 3' und die Hinterkante 4', sondern auch die Außenkante 2' geradlinig ausgebildet sind. Deren Krümmungs-Radius R2" hat daher ebenfalls eine unendliche Länge.Finally, the configuration of a grinding lamella 1 "', in which not only the inner edge 3' and the trailing edge 4 ', but also the outer edge 2' are formed in a straight line, also has a radius of curvature R2" infinite length.

Die Ausführungsbeispiele nach den Fig. 8 bis 11 entsprechen in ihrem Grundaufbau denjenigen nach den Fig. 1, 5, 6, 7, wobei anstelle der scharf kantigen Schnittpunkte 18, 21, 23 jeweils abgerundete Ecken vorgesehen sind. Diese Schleiflamellen weisen also jeweils die Grundform eines Dreiecks auf. Die Hauptkanten bildenden Außenkanten, Innenkanten und Hinterkanten werden also durch konvex gekrümmte Nebenkanten miteinander verbunden, deren Krümmungs-Radius r jeweils deutlich kleiner ist als der Krümmungs-Radius R der erwähnten Hauptkanten. Die Hauptkanten bildende Außenkanten, Innenkanten und Hinterkanten sind in den Fig. 8 bis 11 mit denselben Bezugsziffern wie die entsprechenden Kanten in den Fig. 1, 5, 6, 7 bezeichnet, wobei jeweils zur Unterscheidung ein "a" hinzugefügt ist. Für die Krümmungs-Radien R gilt entsprechendes.The embodiments of FIGS. 8 to 11 correspond in their basic structure to those of FIGS. 1, 5, 6, 7, wherein instead of the sharp-edged intersection points 18, 21, 23 respectively rounded corners are provided. These abrasive slats thus each have the basic shape of a triangle. The main edges forming outer edges, inner edges and trailing edges are thus connected to each other by convexly curved side edges whose radius of curvature r each is significantly smaller than the radius of curvature R of the mentioned main edges. The main edges forming outer edges, inner edges and trailing edges are denoted in Figs. 8 to 11 with the same reference numerals as the corresponding edges in Figs. 1, 5, 6, 7, wherein in each case an "a" is added to distinguish. The same applies to the radii of curvature R.

Die Nebenkanten sind mit denselben Bezugsziffern versehen, wie die Schnittpunkte 18, 21, 23, wobei auch diesen zur Unterscheidung ein "a" hinzugefügt ist. Entsprechendes gilt für die Bezeichnung der Krümmungs-Radien r der Nebenkanten.The side edges are provided with the same reference numerals, as the intersections 18, 21, 23, wherein these are added to distinguish an "a". The same applies to the name of the radii of curvature r of the minor edges.

Hierzu im Einzelnen folgendes:For this in detail the following:

Bei der Schleiflamelle 1a nach Fig. 8 sind alle drei Hauptkanten, nämlich die Außenkante 2a, die Innenkante 3a und die Hinterkante 4a gekrümmt ausgebildet, und zwar die Außenkante 2a und die Hinterkante 4a konvex, während die Innenkante 3a konkav gekrümmt ist. Die Krümmungs-Radien betragen R2a, R4a und R3a. Die Hauptkanten sind jeweils mit drei Nebenkanten 18a, 21a bzw. 23a miteinander verbunden, die konvex gekrümmt sind und Krümmungs-Radien r18a, r21a bzw. r23a aufweisen.8, all three main edges, namely the outer edge 2a, the inner edge 3a and the trailing edge 4a are curved, the outer edge 2a and the trailing edge 4a convex, while the inner edge 3a is concavely curved. The radii of curvature are R2a, R4a and R3a. The major edges are connected to each other by three side edges 18a, 21a and 23a, respectively, which are convexly curved and have radii of curvature r18a, r21a and r23a, respectively.

Die Schleiflamelle 1'a nach Fig. 9 unterscheidet sich von der nach Fig. 8 dadurch, dass die Innenkante 3'a geradlinig ausgebildet ist und demzufolge der Krümmungs-Radius R3'a dieser Innenkante 3'a eine unendliche Länge hat.The grinding blade 1'a of FIG. 9 differs from that of FIG. 8 in that the inner edge 3'a is rectilinear and consequently the radius of curvature R3'a of this inner edge 3'a has an infinite length.

Die Schleiflamelle 1"a nach Fig. 10 unterscheidet sich wiederum von der nach Fig. 9 dadurch, dass auch die Hinterkante 4'a geradlinig ausgebildet ist und demzufolge ihr Krümmungs-Radius R4'a eine unendliche Länge hat.The grinding lamella 1 "a of FIG. 10 again differs from that of FIG. 9 in that also the trailing edge 4'a is rectilinear and consequently its radius of curvature R4'a has an infinite length.

Bei der Schleiflamelle 1"' a nach Fig. 11 sind schließlich alle drei Hauptkanten geradlinig ausgebildet, also auch die Außenkante 2'a, deren Krümmungs-Radius R2'a demzufolge eine unendliche Länge hat.Finally, in the case of the grinding lamella 1 "'a of FIG. 11, all three main edges are rectilinear, that is to say the outer edge 2'a, whose radius of curvature R2'a consequently has an infinite length.

Die Krümmungs-Radien R der Hauptkanten sind deutlich größer als die Krümmungs-Radien r der Nebenkanten. Es gilt: 3 ≤ R/r und bevorzugt 10 ≤ R/r. Soweit die Hauptkanten nicht geradlinig ausgebildet sind, gilt für das Verhältnis der Krümmungs-Radien R der Hauptkanten zu den Krümmungs-Radien r der Nebenkanten: 3 ≤ R/r ≤ 20 und bevorzugt 10 ≤ R/r ≤ 20.The radii of curvature R of the main edges are significantly larger than the radii of curvature r of the minor edges. The following applies: 3 ≦ R / r and preferably 10 ≦ R / r. Insofar as the main edges are not rectilinear, the ratio of the radii of curvature R of the main edges to the radii of curvature applies r of the minor edges: 3 ≤ R / r ≤ 20 and preferably 10 ≤ R / r ≤ 20.

Claims (16)

Fächer-Schleifscheibe, die in einer Drehrichtung (16) drehantreibbar ist, - mit einem Tragteller (5), der -- eine Mittel-Achse (9), -- eine innere Nabe (6) und -- einen ringförmigen Randbereich (8) aufweist, - mit Schleiflamellen (1, 1', 1", 1"', 1a, 1'a, 1"a, 1"'a), die -- in der Grund-Form eines Dreiecks mit drei Hauptkanten, nämlich einer Außenkante (2, 2', 2a, 2'a), einer Innenkante (3, 3', 3a, 3'a) und einer Hinterkante (4, 4', 4a, 4'a) ausgebildet und -- auf dem Randbereich (8) unter Bildung eines ringförmigen Schleiflamellen-Pakets (13) in gleichen Winkelabständen derart angeordnet sind, dass --- die Außenkante (2, 2', 2a, 2'a) einen Teil eines Außenrandes (14) des Schleiflamellen-Pakets (13) begrenzt, --- die Innenkante (3, 3', 3a, 3'a) von einem Innenrand (19) des Schleiflamellen-Pakets (13) zum Außenrand (14) verläuft und teilweise von in Drehrichtung (16) vorgeordneten Schleiflamellen (1, 1', 1 ", 1"', 1a, 1'a, 1 " a, 1'''a) überdeckt wird und --- die Hinterkante (4, 4', 4a, 4'a) offen liegt und - bezogen auf die Drehrichtung (16) - vom Innenrand (19) zum Außenrand (14) des Schleiflamellen-Pakets (13) voreilend verläuft. Fan grinding wheel, which is rotationally drivable in one direction of rotation (16), - With a support plate (5), the a center axis (9), - an inner hub (6) and - an annular edge region (8) having, - With grinding blades (1, 1 ', 1 ", 1"', 1a, 1'a, 1 "a, 1"'a), the in the basic shape of a triangle with three main edges, namely an outer edge (2, 2 ', 2a, 2'a), an inner edge (3, 3', 3a, 3'a) and a trailing edge (4, 4 ', 4a, 4'a) are formed and - Are arranged on the edge region (8) to form an annular abrasive lamella package (13) at equal angular intervals such that the outer edge (2, 2 ', 2a, 2'a) delimits a part of an outer edge (14) of the grinding lamella packet (13), the inner edge (3, 3 ', 3a, 3'a) extends from an inner edge (19) of the grinding lamella packet (13) to the outer edge (14) and partially by grinding lamellae (1, 1) arranged upstream in the direction of rotation (16) ', 1 ", 1"', 1a, 1'a, 1 "a, 1 '''a) is covered and --- the trailing edge (4, 4 ', 4a, 4'a) is open and - with respect to the direction of rotation (16) - from the inner edge (19) to the outer edge (14) of the grinding blade package (13) is leading. Fächer-Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass die Außenkante (2, 2a) mit einem Krümmungs-Radius Ra oder R2a konvex gekrümmt ausgebildet ist.Fan grinding wheel according to claim 1, characterized in that the outer edge (2, 2a) is formed convexly curved with a radius of curvature Ra or R2a. Fächer-Schleifscheibe nach Anspruch 2, dadurch gekennzeichnet, dass der Außenrand (14) des Schleiflamellen-Pakets (13) einen AußenRadius R13 hat, der gleich dem Krümmungs-Radius R2 oder R2a der gekrümmten Außenkante (2) ist.The fan grinding wheel according to claim 2, characterized in that the outer edge (14) of the abrasive sipe package (13) has an outer radius R13 equal to the radius of curvature R2 or R2a of the curved outer edge (2). Fächer-Schleifscheibe nach einem Ansprüche 1 bis 3, dadurch gekennzeichnet,
dass die Hinterkante (4', 4'a) geradlinig ausgebildet ist.Fan grinding wheel according to one of Claims 1 to 3, characterized
that the trailing edge (4 ', 4'a) is rectilinear. Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
dass die Hinterkante (4, 4a) mit einem Krümmungs-Radius R4 oder R4a konvex gekrümmt ausgebildet ist.Fan grinding wheel according to one of claims 1 to 3, characterized
that the trailing edge (4, 4a) is curved convex with a radius of curvature R4 or R4a. Fächer-Schleifscheibe nach Anspruch 4 oder 5, dadurch gekennzeichnet,
dass eine Tangente (17) an die Hinterkante (4, 4') in einem Schnittpunkt (18) zwischen Außenkante (2, 2') und Hinterkante (4, 4') und ein Radius R13 von der Mittel-Achse (9) durch den Schnittpunkt (18) einen in Drehrichtung (16) gegenüber dem Radius R13 offenen Winkel α einschließen.Fan grinding wheel according to claim 4 or 5, characterized
that a tangent (17) to the trailing edge (4, 4 ') at an intersection point (18) between the outer edge (2, 2') and rear edge (4, 4 ') and a radius R13 from the central axis (9) the intersection (18) in the direction of rotation (16) with respect to the radius R13 open angle α include. Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,
dass die Innenkante (3, 3a) mit einem Krümmungs-Radius R3 oder R3a konkav gekrümmt ist.Fan grinding wheel according to one of claims 1 to 6, characterized
in that the inner edge (3, 3a) is concavely curved with a radius of curvature R3 or R3a. Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,
dass die Innenkante (3', 3'a) geradlinig ausgebildet ist.Fan grinding wheel according to one of claims 1 to 6, characterized
that the inner edge (3 ', 3'a) is of rectilinear design. Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet,
dass für die Zahl n der auf einem Tragteller (5) angeordneten Schleiflamellen (1, 1', 1", 1"') gilt: 10 ≤ n ≤ 80.Fan grinding wheel according to one of claims 1 to 8, characterized
that for the number n of on a supporting plate (5) arranged abrasive flaps (1, 1 ', 1 ", 1"') the following applies: 10 ≤ n ≤ 80th Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet,
dass sich jede Schleiflamelle (1, 1', 1", 1"') über einen Winkel β des kreisringförmigen Schleiflamellen-Pakets (13) erstreckt, für den gilt: 25° ≤ β ≤ 90°.Fan grinding wheel according to one of claims 1 to 9, characterized
in that each grinding lamella (1, 1 ', 1 ", 1"') extends over an angle β of the annular abrasive lamella packet (13), to which applies: 25 ° ≤ β ≤ 90 °. Fächer-Schleifscheibe nach Anspruch 6, dadurch gekennzeichnet, dass für den Winkel α gilt: 5° ≤ α ≤ 35°.Fan-grinding wheel according to claim 6, characterized in that for the angle α is: 5 ° ≤ α ≤ 35 °. Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet,
dass mindestens zwei Hauptkanten sich in einem Schnittpunkt (18, 21, 23) schneiden.Fan grinding wheel according to one of claims 1 to 11, characterized
that at least two major edges intersect at an intersection (18, 21, 23). Fächer-Schleifscheibe nach Anspruch 12, dadurch gekennzeichnet, dass alle Hauptkanten sich in einem Schnittpunkt (18, 21, 23) schneiden.Fan grinding wheel according to claim 12, characterized in that all the main edges intersect at an intersection (18, 21, 23). Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet,
dass mindestens zwei Hauptkanten durch eine konvex gekrümmte Nebenkante (18a, 2 1 a, 23 a) miteinander verbunden sind.Fan grinding wheel according to one of claims 1 to 11, characterized
in that at least two main edges are interconnected by a convexly curved side edge (18a, 21a, 23a). Fächer-Schleifscheibe nach Anspruch 14, dadurch gekennzeichnet, dass alle Hauptkanten durch konvex gekrümmte Nebenkanten (18a, 21a, 23a) miteinander verbunden sind.Fan grinding wheel according to claim 14, characterized in that all the main edges are interconnected by convexly curved side edges (18a, 21a, 23a). Fächer-Schleifscheibe nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet,
dass für die Krümmungs-Radien R der Hauptkanten im Verhältnis zu den Krümmungs-Radien r der Nebenkanten gilt: 3 ≤ R/r und bevorzugt 10 ≤ R/r.Fan grinding wheel according to one of claims 1 to 15, characterized
that applies to the radii of curvature R of the main edges relative to the radii of curvature r of the secondary edges: 3 ≤ R / r and preferably 10 ≤ R / r.
EP06026974A 2006-05-23 2006-12-28 Fan-folded abrasive disc Active EP1859905B1 (en)

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PL06026974T PL1859905T3 (en) 2006-05-23 2006-12-28 Fan-folded abrasive disc
TW096114026A TWI408026B (en) 2006-05-23 2007-04-20 Fan-type grinding wheel
CA2586791A CA2586791C (en) 2006-05-23 2007-05-01 Fan-type grinding wheel
RU2007117362/02A RU2424890C2 (en) 2006-05-23 2007-05-10 Fan grinding wheel
BRPI0702553-0A BRPI0702553B1 (en) 2006-05-23 2007-05-14 FOLDING REBOL
MX2007006000A MX2007006000A (en) 2006-05-23 2007-05-18 Fan-type grinding wheel.
AU2007202297A AU2007202297B2 (en) 2006-05-23 2007-05-22 Fan-type grinding wheel
CN2007101048718A CN101077571B (en) 2006-05-23 2007-05-23 Fan type grinding wheel
US11/752,632 US7481699B2 (en) 2006-05-23 2007-05-23 Fan-type grinding wheel

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ZA200703921B (en) 2008-08-27
RU2424890C2 (en) 2011-07-27
AU2007202297A1 (en) 2007-12-13
EP1859905B1 (en) 2008-10-01
DE102006024015A1 (en) 2007-11-29
CN101077571B (en) 2010-06-16
ATE409550T1 (en) 2008-10-15
RU2007117362A (en) 2008-11-20
PL1859905T3 (en) 2009-01-30
ES2313537T3 (en) 2009-03-01
EP1859905A3 (en) 2008-04-16
AU2007202297B2 (en) 2011-08-25
DE502006001687D1 (en) 2008-11-13
BRPI0702553A (en) 2008-03-11
TWI408026B (en) 2013-09-11
MX2007006000A (en) 2009-01-09
DK1859905T3 (en) 2009-01-26
CA2586791A1 (en) 2007-11-23
BRPI0702553B1 (en) 2019-08-06
US7481699B2 (en) 2009-01-27

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