EP1400312A1 - Sanding disc having pleated flaps with circumferential recesses - Google Patents

Sanding disc having pleated flaps with circumferential recesses Download PDF

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Publication number
EP1400312A1
EP1400312A1 EP03020460A EP03020460A EP1400312A1 EP 1400312 A1 EP1400312 A1 EP 1400312A1 EP 03020460 A EP03020460 A EP 03020460A EP 03020460 A EP03020460 A EP 03020460A EP 1400312 A1 EP1400312 A1 EP 1400312A1
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EP
European Patent Office
Prior art keywords
grinding wheel
recesses
carrier
shaped
lamellar
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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
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EP03020460A
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German (de)
French (fr)
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EP1400312B1 (en
Inventor
Josef Keuler
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.)
Rhodius Qualitats-Schleifmittel & Cokg GmbH
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Rhodius Qualitats-Schleifmittel & Cokg GmbH
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    • 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

Definitions

  • the invention relates to a flap disc with a disc-shaped or plate-shaped supports and with grinding flaps, which overlap like scales on the carrier are arranged.
  • Flap discs of this type are used for flat machining of metal and stone on high-speed hand machines used.
  • Flap grinding wheels are from DE-U-92 05 471, DE-A-40 31 454, DE-A-44 30 229 and WO 99/16583.
  • the disc-shaped or plate-shaped carrier is circular.
  • Grinding and cutting discs where granular grinding material applied directly to the disc or plate-shaped carrier and where there are cut-outs, are from DE-A-1 652 912, DE-U-298 02 791 and WO 00/35634 known.
  • the disk-shaped or plate-shaped carrier is included coated with an abrasive layer.
  • the visual recesses are circular openings of the carrier or provided on the circumference Incisions with rounded flanks.
  • the object of the invention is a lamellar grinding wheel, which enables the success of grinding on the Track workpiece surface continuously.
  • this object is achieved by a lamellar grinding wheel solved the type mentioned, the scope of which is not is circular.
  • the circumference of the grinding wheel is preferably circular Cutouts on the perimeter, so that the outer perimeter of the Grinding wheel in the area of the recesses of a circular shape is set inside.
  • the recesses can in particular have the shape of a circular section or segment.
  • the depth of the recesses can be, for example, 20 to 30% of the Radius of the carrier amount, the depth is slightly smaller than the radial extension of the fins, so that the recess not up to that from the inner ends of the slats formed circle is sufficient and despite the cutouts of the the entire circumference of the grinding wheel is covered with lamellas.
  • the flap disc can basically be any of the Circular shape may have a different circumference, for example it can rectangular, square, cruciform, trochoidal, star-shaped or be oval.
  • the flap grinding wheel according to the invention can be used a carrier made of a multilayer fibrous carrier, e.g. Glass fabric and jute, made of metallic materials, e.g. Iron or aluminum, or made of plastic.
  • the carrier is in a semi-automatic machine like this is common for the production of flap discs, hung up.
  • On one side of the carrier is an adhesive or two-component adhesive), e.g. an epoxy adhesive.
  • the slats are inserted, cut off and pressed.
  • a plurality of such semi-finished flap discs is on a mandrel of e.g. 500 mm length stacked and cured at approx. 120 ° C for 4 to 5 hours.
  • the carrier body can be longitudinal each side of the square linearly according to the lamella spacing clocked and each time it reaches a corner of the Square rotated by 90 °, the assignment during the Rotation is continued.
  • Other angular shapes can be used corresponding angles of rotation are generated at the corners. For example, a triangular shape will have an angle rotated by 120 °. The way of working is repeated along each side of the mold until the carrier is completely covered. The exact alignment of the slats is then confirmed by Pressing achieved with a negative mold.
  • the lamellar grinding wheel shown in FIG. 1 has one plate-shaped carrier 10 with a flat edge region 12 and a recessed or cranked inner region 14, wherein there is a clamping bore 16 in the middle of the inner region 14 with which the flap disc is on the clamping pin an angle grinder can be clamped.
  • the flat edge region 12 has a large number of lamellae 20 equipped, which overlap like a scale, so that always only the end region of each lamella 20, which is a few millimeters wide exposed.
  • the part in front of it in the direction of rotation is from the preceding slat 20 covered.
  • the single ones Slats 20 consist of a textile base fabric on which a granular abrasive is applied.
  • the slats 20 have a radial extension of about 20 to 60%, e.g. 40% of the diameter of the flap grinding wheel.
  • the lamellar grinding wheel has two opposing segment-shaped ones Cutouts 30.
  • the cutouts 30 are thereby made that two opposite edge areas of the originally circular lamellar grinding wheel straight be cut off. To do this, place the washer over the center hole centered on a roller table and between two in a certain distance on a shaft mounted diamond cutting discs pushed through and right and left separated. The spacing between the disks is made using intermediate pieces adapted to the corresponding disc diameter: e.g. diameter 115, distance: 82 mm.
  • the radial depth of the recesses 30 is about 6 mm smaller than the radial extension of the fins 20 so that the circumference of the finished lamellar disc is continuous is equipped with slats 20, the slats in Area of the recesses 30, however, have different lengths and in the middle of the recesses 30 the radial extension is only about 6 mm.
  • Figure 2 shows a flap disc with trochiodal (Shape of an equilateral triangle with outward curved Sides) shape.
  • the edge area 12 with a width of 20 to 30% of the distance of the circumference from the center is included Slats 20 assembled, the slats 20 each radially are aligned.
  • Figure 3 shows a flap disc of square Shape with rounded corners.
  • the edge area 12 with a Width of about 50% is covered with lamellae 20, which are as in the embodiment of Figure 2 are radially aligned.
  • Square flap discs can also be used in this way be produced that a square carrier 10 in the edge area 12 with lamellar overlaps 20 is occupied.
  • the carrier 10 becomes linear with an edge clocked by a placement machine at lamella spacing. in the Range from a few centimeters before to a few centimeters after the corner 10, the carrier 10 is rotated by a total of 90 °. During the rotation, the carrier 10 is simultaneously continued with Slats 20 occupied. Possibly protruding in the corner areas Tips of the slats 20 are cut off.
  • Figures 4 and 5 show an oval or star-shaped lamellar grinding wheel.
  • the slats 20 are each radial or aligned at a constant angle to the radius.
  • FIGS. 6 and 7 show a rectangular lamellar grinding wheel, where the aspect ratio is about 1: 3.
  • the narrow ones terminal edge regions 12 are each with six Slats 20 occupied, the slats perpendicular to the radius are aligned.
  • Figure 7 shows the flap disc in Cut.
  • the edge area 12 and the inner area 14 lie in FIG one level.
  • the outermost slats 22 are each with a wedge-shaped mass 24 made of epoxy resin, so that the outer slats 22 at the same angle from the support 10 protrude like the other slats 20.
  • Figure 8 shows a cross-shaped lamellar grinding wheel, wherein using each of the two arms of the cross in the same way Lamella 20 is occupied like the lamellar grinding wheel Figures 6 and 7.
  • the handling according to the invention differs Flap disc not of usual completely circular Flap discs. It has been shown that in the lamellar grinding wheel according to the invention by high rotational speeds of 80 m / s (12,200 rpm at a 125 mm grinding wheel) vibrations and the danger there is no hooking on the workpiece.
  • the segment-shaped recesses or the areas in which the radius of the flap grinding wheel is smaller enter in quick view of the workpiece for a short time free, so the progress of the grinding work continuously can be tracked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

A lamella grinding disc has a plate-shaped substrate (10) with overlapping grinding lamella (20). The grinding disc is esp. not circular.

Description

Die Erfindung betrifft eine Lamellenschleifscheibe mit einem scheibenförmigen oder tellerförmigen Träger und mit Schleiflamellen, die sich schuppenartig überdeckend auf dem Träger angeordnet sind.The invention relates to a flap disc with a disc-shaped or plate-shaped supports and with grinding flaps, which overlap like scales on the carrier are arranged.

Lamellenschleifscheiben dieser Art werden zum flächigen Bearbeiten von Metall und Stein auf hochtourigen Handmaschinen eingesetzt.Flap discs of this type are used for flat machining of metal and stone on high-speed hand machines used.

Lamellenschleifscheiben sind aus DE-U-92 05 471, DE-A-40 31 454, DE-A-44 30 229 und WO 99/16583 bekannt. Der scheibenförmige oder tellerförmige Träger ist dabei jeweils kreisförmig.Flap grinding wheels are from DE-U-92 05 471, DE-A-40 31 454, DE-A-44 30 229 and WO 99/16583. The disc-shaped or plate-shaped carrier is circular.

Schleif- und Trennscheiben, bei denen körniges Schleifmaterial unmittelbar auf den scheiben- oder tellerförmigen Träger aufgebracht ist und bei denen Sichtaussparungen vorgesehen sind, sind aus DE-A-1 652 912, DE-U-298 02 791 und WO 00/35634 bekannt. Der scheiben- oder tellerförmige Träger ist dabei mit einer Schleifmittelschicht belegt. Die Sichtaussparungen sind kreisförmige Durchbrechungen des Trägers oder am Umfang vorgesehene Einschnitte mit abgerundeten Flanken.Grinding and cutting discs, where granular grinding material applied directly to the disc or plate-shaped carrier and where there are cut-outs, are from DE-A-1 652 912, DE-U-298 02 791 and WO 00/35634 known. The disk-shaped or plate-shaped carrier is included coated with an abrasive layer. The visual recesses are circular openings of the carrier or provided on the circumference Incisions with rounded flanks.

Die Aufgabe der Erfindung besteht in einer Lamellenschleifscheibe, die es ermöglicht, den Erfolg des Schleifens auf der Werkstückoberfläche laufend zu verfolgen.The object of the invention is a lamellar grinding wheel, which enables the success of grinding on the Track workpiece surface continuously.

Erfindungsgemäß wird diese Aufgabe durch eine Lamellenschleifscheibe der eingangs genannten Art gelöst, deren Umfang nicht kreisförmig ist.According to the invention, this object is achieved by a lamellar grinding wheel solved the type mentioned, the scope of which is not is circular.

Vorzugsweise ist der Umfang der Schleifscheibe kreisförmig mit Aussparungen auf dem Umfang, so dass der Außenumfang der Schleifscheibe im Bereich der Aussparungen von einer Kreisform nach innen gesetzt ist. Die Aussparungen können dabei insbesondere die Form eines Kreisabschnitts oder Segments haben. Die Tiefe der Aussparungen kann beispielsweise 20 bis 30 % des Radius des Trägers betragen, wobei die Tiefe etwas kleiner ist als die radiale Erstreckung der Lamellen, so dass die Aussparung nicht bis zu dem von den inneren Enden der Lamellen gebildeten Teilkreis reicht und trotz der Aussparungen der gesamte Umfang der Schleifscheibe mit Lamellen belegt ist.The circumference of the grinding wheel is preferably circular Cutouts on the perimeter, so that the outer perimeter of the Grinding wheel in the area of the recesses of a circular shape is set inside. The recesses can in particular have the shape of a circular section or segment. The depth of the recesses can be, for example, 20 to 30% of the Radius of the carrier amount, the depth is slightly smaller than the radial extension of the fins, so that the recess not up to that from the inner ends of the slats formed circle is sufficient and despite the cutouts of the the entire circumference of the grinding wheel is covered with lamellas.

Vorzugsweise sind zwei einander diametral gegenüberliegende Aussparungen vorgesehen.Preferably two are diametrically opposite one another Cutouts provided.

Die Lamellenschleifscheibe kann grundsätzlich jeden von der Kreisform abweichenden Umfang haben, beispielsweise kann sie rechteckförmig, quadratisch, kreuzförmig, trochoidisch, sternförmig oder oval sein.The flap disc can basically be any of the Circular shape may have a different circumference, for example it can rectangular, square, cruciform, trochoidal, star-shaped or be oval.

Die erfindungsgemäße Lamellenschleifscheibe kann unter Verwendung eines Trägers aus einem mehrlagigen Faserstoffträger, z.B. Glasgewebe und Jute, aus metallischen Werkstoffen, z.B. Eisen oder Aluminium, oder aus Kunststoff hergestellt werden. Der Träger wird in einer halbautomatischen Maschine, wie sie für die Herstellung von Lamellenschleifscheiben üblich ist, aufgelegt. Auf eine Seite des Trägers wird ein Kleber (Ein- oder Zweikomponentenkleber), z.B. ein Epoxidkleber, aufgetragen. Dann werden die Lamellen eingesetzt, abgeschnitten und angedrückt. Eine Mehrzahl derartiger halbfertiger Lamellenschleifscheiben wird auf einem Dorn von z.B. 500 mm Länge gestapelt und bei ca. 120°C für 4 bis 5 Stunden ausgehärtet. Schließlich werden noch zwei einander gegenüberliegende, segmentförmige Aussparungen abgeschnitten.The flap grinding wheel according to the invention can be used a carrier made of a multilayer fibrous carrier, e.g. Glass fabric and jute, made of metallic materials, e.g. Iron or aluminum, or made of plastic. The carrier is in a semi-automatic machine like this is common for the production of flap discs, hung up. On one side of the carrier is an adhesive or two-component adhesive), e.g. an epoxy adhesive. Then the slats are inserted, cut off and pressed. A plurality of such semi-finished flap discs is on a mandrel of e.g. 500 mm length stacked and cured at approx. 120 ° C for 4 to 5 hours. Finally, there are two opposite, segment-shaped Cut-outs cut out.

Es ist auch eine separate Belegung der einzelnen Träger möglich, insbesondere von Trägern, die von hause aus nicht rund sind, die also bereits vor dem Auflegen der Lamellen nicht rund sind. It is also possible to assign the individual carriers separately, especially from carriers that are not round at home are not already before the slats are put on are round.

Hat der Träger beispielsweise eine quadratische Form, das heißt eine Form mit zwei Paaren einander gegenüberliegender segmentförmiger Aussparungen, so kann der Trägerkörper längs jeder Seite des Quadrates linear entsprechend dem Lamellenabstand getaktet und jeweils beim Erreichen einer Ecke des Quadrats um 90° gedreht werden, wobei die Belegung während der Drehung weitergeführt wird. Andere eckige Formen können mit entsprechenden Drehungswinkeln an den Ecken erzeugt werden. Bei einer dreieckigen Form wird beispielsweise um einen Winkel von 120° gedreht. Die Arbeitsweise wiederholt sich entlang jeder Seite der Form bis der Träger vollständig belegt ist. Die exakte Ausrichtung der Lamellen wird anschließend durch Anpressen mit einer Negativform erreicht.For example, if the carrier has a square shape, the is a shape with two pairs facing each other segment-shaped recesses, the carrier body can be longitudinal each side of the square linearly according to the lamella spacing clocked and each time it reaches a corner of the Square rotated by 90 °, the assignment during the Rotation is continued. Other angular shapes can be used corresponding angles of rotation are generated at the corners. For example, a triangular shape will have an angle rotated by 120 °. The way of working is repeated along each side of the mold until the carrier is completely covered. The exact alignment of the slats is then confirmed by Pressing achieved with a negative mold.

Zur Herstellung einer Stabform wird nur eine Linearbewegung des Trägers benötigt.Only a linear movement is required to produce a rod shape of the wearer.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung erläutert. Es zeigen:

Fig. 1
in Draufsicht eine Lamellenschleifscheibe mit Kreisform und zwei segmentförmigen Aussparungen;
Fig. 2
in Draufsicht eine Lamellenschleifscheibe mit Trochoid-Form;
Fig. 3
in Draufsicht eine Lamellenschleifscheibe mit Quadratform;
Fig. 4
in Draufsicht eine Lamellenschleifscheibe mit elliptischer Umfangsform;
Fig. 5
in Draufsicht eine sternförmige Lamellenschleifscheibe;
Fig. 6
in Draufsicht eine rechteckförmige Lamellenschleifscheibe;
Fig. 7
in einer Schnittansicht die Lamellenschleifscheibe von Figur 6 und
Fig. 8
in Draufsicht eine kreuzförmige Lamellenschleifscheibe.
Embodiments of the invention are explained below with reference to the drawing. Show it:
Fig. 1
in plan view a lamellar grinding wheel with a circular shape and two segment-shaped recesses;
Fig. 2
in plan view a flap disc with a trochoid shape;
Fig. 3
in plan view a lamellar grinding wheel with a square shape;
Fig. 4
in plan view a lamellar grinding wheel with an elliptical peripheral shape;
Fig. 5
in plan view a star-shaped lamellar grinding wheel;
Fig. 6
in plan view a rectangular lamellar grinding wheel;
Fig. 7
in a sectional view the flap grinding wheel of Figure 6 and
Fig. 8
in plan view a cross-shaped lamellar grinding wheel.

Die in Figur 1 gezeigte Lamellenschleifscheibe weist einen tellerförmigen Träger 10 mit einem ebenen Randbereich 12 und einem vertieften oder gekröpften Innenbereich 14 auf, wobei sich in der Mitte des Innenbereichs 14 eine Einspannbohrung 16 befindet, mit der die Lamellenschleifscheibe auf dem Einspannzapfen eines Winkelschleifers festgespannt werden kann.The lamellar grinding wheel shown in FIG. 1 has one plate-shaped carrier 10 with a flat edge region 12 and a recessed or cranked inner region 14, wherein there is a clamping bore 16 in the middle of the inner region 14 with which the flap disc is on the clamping pin an angle grinder can be clamped.

Der ebene Randbereich 12 ist mit einer Vielzahl von Lamellen 20 bestückt, die sich schuppenartig überlappen, so dass immer nur der einige Millimeter breite Endbereich jeder Lamelle 20 freiliegt. Der in Drehrichtung davor liegende Teil wird von der vorausgehenden Lamelle 20 überdeckt. Die einzelnen Lamellen 20 bestehen aus einem textilen Grundgewebe, auf das ein körniges Schleifmittel aufgebracht ist. Die Lamellen 20 haben eine radiale Erstreckung von etwa 20 bis 60%, z.B. 40%, des Durchmessers der Lamellenschleifscheibe.The flat edge region 12 has a large number of lamellae 20 equipped, which overlap like a scale, so that always only the end region of each lamella 20, which is a few millimeters wide exposed. The part in front of it in the direction of rotation is from the preceding slat 20 covered. The single ones Slats 20 consist of a textile base fabric on which a granular abrasive is applied. The slats 20 have a radial extension of about 20 to 60%, e.g. 40% of the diameter of the flap grinding wheel.

Die Lamellenschleifscheibe hat zwei gegenüberliegende segmentförmige Aussparungen 30. Die Aussparungen 30 werden dadurch hergestellt, dass zwei gegenüberliegende Randbereiche der ursprünglich kreisförmigen Lamellenschleifscheibe geradlinig abgeschnitten werden. Dazu wird die Scheibe über die Mittelbohrung auf einem Rolltisch zentriert und zwischen zwei in einem bestimmten Abstand auf einer Welle aufgespannten Diamanttrennscheiben durchgeschoben und dabei rechts und links abgetrennt. Der Scheibenabstand wird über Zwischenstücke dem entsprechenden Scheibendurchmesser angepasst: z.B. Durchmesser 115, Abstand: 82 mm. Die radiale Tiefe der Aussparungen 30 ist um etwa 6 mm kleiner als die radiale Erstreckung der Lamellen 20, so dass der Umfang der fertigen Lamellenscheibe durchgehend mit Lamellen 20 bestückt ist, wobei die Lamellen im Bereich der Aussparungen 30 jedoch unterschiedliche Längen haben und in der Mitte der Aussparungen 30 die radiale Erstreckkung nur etwa 6 mm beträgt.The lamellar grinding wheel has two opposing segment-shaped ones Cutouts 30. The cutouts 30 are thereby made that two opposite edge areas of the originally circular lamellar grinding wheel straight be cut off. To do this, place the washer over the center hole centered on a roller table and between two in a certain distance on a shaft mounted diamond cutting discs pushed through and right and left separated. The spacing between the disks is made using intermediate pieces adapted to the corresponding disc diameter: e.g. diameter 115, distance: 82 mm. The radial depth of the recesses 30 is about 6 mm smaller than the radial extension of the fins 20 so that the circumference of the finished lamellar disc is continuous is equipped with slats 20, the slats in Area of the recesses 30, however, have different lengths and in the middle of the recesses 30 the radial extension is only about 6 mm.

Figur 2 zeigt eine Lamellenschleifscheibe mit trochiodaler (Form eines gleichseitigen Dreiecks mit nach außen gekrümmten Seiten) Form. Der Randbereich 12 mit einer Breite von 20 bis 30 % des Abstandes des Umfangs vom Mittelpunkt ist mit Lamellen 20 bestückt, wobei die Lamellen 20 jeweils radial ausgerichtet sind.Figure 2 shows a flap disc with trochiodal (Shape of an equilateral triangle with outward curved Sides) shape. The edge area 12 with a width of 20 to 30% of the distance of the circumference from the center is included Slats 20 assembled, the slats 20 each radially are aligned.

Figur 3 zeigt eine Lamellenschleifscheibe von quadratischer Form mit abgerundeten Ecken. Der Randbereich 12 mit einer Breite von etwa 50 % ist mit Lamellen 20 belegt, die wie bei dem Ausführungsbeispiel von Figur 2 radial ausgerichtet sind.Figure 3 shows a flap disc of square Shape with rounded corners. The edge area 12 with a Width of about 50% is covered with lamellae 20, which are as in the embodiment of Figure 2 are radially aligned.

Quadratische Lamellenschleifscheiben können auch in der Weise hergestellt werden, dass ein quadratischer Träger 10 im Randbereich 12 mit sich schuppenartig überlappenden Lamellen 20 belegt wird. Der Träger 10 wird dazu mit einer Kante linear durch eine Bestückungsmaschine im Lamellenabstand getaktet. Im Bereich von einigen Zentimetern vor bis einige Zentimeter nach einer Ecke wird der Träger 10 um insgesamt 90° gedreht. Während der Drehung wird der Träger 10 gleichzeitig weiter mit Lamellen 20 belegt. In den Eckbereichen eventuell vorstehende Spitzen der Lamellen 20 werden abgeschnitten.Square flap discs can also be used in this way be produced that a square carrier 10 in the edge area 12 with lamellar overlaps 20 is occupied. For this purpose, the carrier 10 becomes linear with an edge clocked by a placement machine at lamella spacing. in the Range from a few centimeters before to a few centimeters after the corner 10, the carrier 10 is rotated by a total of 90 °. During the rotation, the carrier 10 is simultaneously continued with Slats 20 occupied. Possibly protruding in the corner areas Tips of the slats 20 are cut off.

Figuren 4 und 5 zeigen eine ovale bzw. sternförmige Lamellenschleifscheibe. Die Lamellen 20 sind dabei jeweils radial bzw. unter einem gleich bleibenden Winkel zum Radius ausgerichtet.Figures 4 and 5 show an oval or star-shaped lamellar grinding wheel. The slats 20 are each radial or aligned at a constant angle to the radius.

Figuren 6 und 7 zeigen eine rechteckförmige Lamellenschleifscheibe, wobei das Seitenverhältnis etwa 1 : 3 ist. Die schmalen endständigen Randbereiche 12 sind jeweils mit sechs Lamellen 20 belegt, wobei die Lamellen rechtwinklig zum Radius ausgerichtet sind. Figur 7 zeigt die Lamellenschleifscheibe im Schnitt. Der Randbereich 12 und der Innenbereich 14 liegen in einer Ebene. Die äußersten Lamellen 22 sind jeweils mit einer keilförmigen Masse 24 aus Epoxidharz unterlegt, so dass die äußeren Lamellen 22 unter dem gleichen Winkel von dem Träger 10 abstehen wie die übrigen Lamellen 20.FIGS. 6 and 7 show a rectangular lamellar grinding wheel, where the aspect ratio is about 1: 3. The narrow ones terminal edge regions 12 are each with six Slats 20 occupied, the slats perpendicular to the radius are aligned. Figure 7 shows the flap disc in Cut. The edge area 12 and the inner area 14 lie in FIG one level. The outermost slats 22 are each with a wedge-shaped mass 24 made of epoxy resin, so that the outer slats 22 at the same angle from the support 10 protrude like the other slats 20.

Figur 8 zeigt eine kreuzförmige Lamellenschleifscheibe, wobei jeder der beiden Arme des Kreuzes in der gleichen Weise mit Lamellen 20 belegt ist wie die Lamellenschleifscheibe der Figuren 6 und 7.Figure 8 shows a cross-shaped lamellar grinding wheel, wherein using each of the two arms of the cross in the same way Lamella 20 is occupied like the lamellar grinding wheel Figures 6 and 7.

In der Handhabung unterscheidet sich die erfindungsgemäße Lamellenschleifscheibe nicht von üblichen vollständig kreisförmigen Lamellenschleifscheiben. Es hat sich gezeigt, dass bei der erfindungsgemäßen Lamellenschleifscheibe durch die hohen Rotationsgeschwindigkeiten von 80 m/s (12.200 U/min bei einer 125er Lamellenschleifscheibe) Vibrationen und die Gefahr eines Einhakens am Werkstück nicht besteht.The handling according to the invention differs Flap disc not of usual completely circular Flap discs. It has been shown that in the lamellar grinding wheel according to the invention by high rotational speeds of 80 m / s (12,200 rpm at a 125 mm grinding wheel) vibrations and the danger there is no hooking on the workpiece.

Die segmentförmigen Aussparungen bzw. die Bereiche, in denen der Radius der Lamellenschleifscheibe kleiner ist, geben in schneller Folge jeweils kurzzeitig die Sicht auf das Werkstück frei, so dass der Fortgang der Schleifarbeit kontinuierlich verfolgt werden kann.The segment-shaped recesses or the areas in which the radius of the flap grinding wheel is smaller, enter in quick view of the workpiece for a short time free, so the progress of the grinding work continuously can be tracked.

Claims (6)

Lamellenschleifscheibe mit einem scheibenförmigen oder tellerförmigen Träger (10) und mit Schleiflamellen (20), die sich schuppenartig überdeckend auf dem Träger (10) angeordnet sind, dadurch gekennzeichnet, dass der Umfang der Schleifscheibe nicht kreisförmig ist.Lamellar grinding wheel with a disk-shaped or plate-shaped carrier (10) and with grinding lamellas (20) which are arranged in a scale-like manner on the carrier (10), characterized in that the circumference of the grinding wheel is not circular. Lamellenschleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass der Umfang der Schleifscheibe kreisförmig mit Aussparungen (30) auf dem Umfang ist, so dass der Aussenumfang der Schleifscheibe im Bereich der Aussparungen (30) von einer Kreisform nach innen abgesetzt ist.Lamellar grinding wheel according to claim 1, characterized in that the circumference of the grinding wheel is circular with recesses (30) on the circumference, so that the outer circumference of the grinding wheel is offset inwards from a circular shape in the region of the recesses (30). Lamellenschleifscheibe nach Anspruch 2, dadurch gekennzeichnet, dass die Aussparungen (30) die Form von Kreisabschnitten oder Segmenten haben.Lamellar grinding wheel according to claim 2, characterized in that the recesses (30) have the shape of circular sections or segments. Lamellenschleifscheibe nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass mindestens ein Paar von diametral gegenüberliegenden Aussparungen (30) vorgesehen ist.Flap grinding wheel according to claim 2 or 3, characterized in that at least one pair of diametrically opposite recesses (30) is provided. Lamellenschleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass der Umfang rechteckförmig, quadratisch, kreuzförmig, trochoidisch, sternförmig oder oval ist.Lamellar grinding wheel according to claim 1, characterized in that the circumference is rectangular, square, cruciform, trochoidal, star-shaped or oval. Lamellenschleifscheibe nach einem der vorausgehenden Ansprüche, dadurch gekennzeichnet, dass sie auf dem gesamten Umfang des Trägers (10) einschließlich der Umfangsbereiche innerhalb der Aussparungen (30) mit Schleiflamellen (20) belegt ist.Flap grinding wheel according to one of the preceding claims, characterized in that it is covered with grinding flaps (20) on the entire circumference of the carrier (10) including the circumferential areas within the recesses (30).
EP03020460A 2002-09-17 2003-09-15 Sanding disc having pleated flaps with circumferential recesses Expired - Lifetime EP1400312B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20214389U DE20214389U1 (en) 2002-09-17 2002-09-17 Flap disc with cutouts on the circumference
DE20214389U 2002-09-17

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EP1400312A1 true EP1400312A1 (en) 2004-03-24
EP1400312B1 EP1400312B1 (en) 2006-11-22

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EP03020460A Expired - Lifetime EP1400312B1 (en) 2002-09-17 2003-09-15 Sanding disc having pleated flaps with circumferential recesses

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EP (1) EP1400312B1 (en)
AT (1) ATE345902T1 (en)
DE (2) DE20214389U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004004027U1 (en) 2004-03-12 2005-07-28 RHODIUS Oualitätsschleifmittel GmbH & Co KG Flap disc
DE102006010366B3 (en) 2006-03-03 2007-10-04 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG Abrasive blade and grinding wheel containing it

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746216A (en) * 1953-05-12 1956-05-22 Jean P Hollingsworth Sanding attachment
DE1652912A1 (en) * 1966-03-25 1971-04-29 Norton Co Grinding wheel
US3616581A (en) * 1969-10-08 1971-11-02 Gen Electric Polishing and grinding rotary finishing tool
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
US6277012B1 (en) * 1998-01-14 2001-08-21 Norton Company Disk locking device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746216A (en) * 1953-05-12 1956-05-22 Jean P Hollingsworth Sanding attachment
DE1652912A1 (en) * 1966-03-25 1971-04-29 Norton Co Grinding wheel
US3616581A (en) * 1969-10-08 1971-11-02 Gen Electric Polishing and grinding rotary finishing tool
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
US6277012B1 (en) * 1998-01-14 2001-08-21 Norton Company Disk locking device

Also Published As

Publication number Publication date
DE50305735D1 (en) 2007-01-04
EP1400312B1 (en) 2006-11-22
ATE345902T1 (en) 2006-12-15
DE20214389U1 (en) 2002-11-14

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