EP1400312A1 - Lamellenschleifscheibe mit Aussparungen am Umfang - Google Patents
Lamellenschleifscheibe mit Aussparungen am Umfang Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding wheel
- recesses
- carrier
- shaped
- lamellar
- 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
Links
Images
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
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
- 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.
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.
- 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.
- Lamellenschleifscheibe nach Anspruch 2, dadurch gekennzeichnet, dass die Aussparungen (30) die Form von Kreisabschnitten oder Segmenten haben.
- Lamellenschleifscheibe nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass mindestens ein Paar von diametral gegenüberliegenden Aussparungen (30) vorgesehen ist.
- Lamellenschleifscheibe nach Anspruch 1, dadurch gekennzeichnet, dass der Umfang rechteckförmig, quadratisch, kreuzförmig, trochoidisch, sternförmig oder oval ist.
- 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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20214389U | 2002-09-17 | ||
DE20214389U DE20214389U1 (de) | 2002-09-17 | 2002-09-17 | Lamellenschleifscheibe mit Aussparungen am Umfang |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1400312A1 true EP1400312A1 (de) | 2004-03-24 |
EP1400312B1 EP1400312B1 (de) | 2006-11-22 |
Family
ID=7975180
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03020460A Expired - Lifetime EP1400312B1 (de) | 2002-09-17 | 2003-09-15 | Lamellenschleifscheibe mit Aussparungen am Umfang |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1400312B1 (de) |
AT (1) | ATE345902T1 (de) |
DE (2) | DE20214389U1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004004027U1 (de) | 2004-03-12 | 2005-07-28 | RHODIUS Oualitätsschleifmittel GmbH & Co KG | Fächerschleifscheibe |
DE102006010366B3 (de) | 2006-03-03 | 2007-10-04 | Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG | Schleiflamelle und diese enthaltende Schleifscheibe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2746216A (en) * | 1953-05-12 | 1956-05-22 | Jean P Hollingsworth | Sanding attachment |
DE1652912A1 (de) * | 1966-03-25 | 1971-04-29 | Norton Co | Schleifscheibe |
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 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8809616U1 (de) | 1988-07-28 | 1989-11-23 | Kemper-Kontakt Gert Kemper GmbH & Co KG, 5600 Wuppertal | Lamellen-Schleifscheibe |
DE8809617U1 (de) | 1988-07-28 | 1989-11-23 | Kemper-Kontakt Gert Kemper GmbH & Co KG, 5600 Wuppertal | Lamellen-Schleifscheibe |
-
2002
- 2002-09-17 DE DE20214389U patent/DE20214389U1/de not_active Expired - Lifetime
-
2003
- 2003-09-15 DE DE50305735T patent/DE50305735D1/de not_active Expired - Lifetime
- 2003-09-15 EP EP03020460A patent/EP1400312B1/de not_active Expired - Lifetime
- 2003-09-15 AT AT03020460T patent/ATE345902T1/de not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2746216A (en) * | 1953-05-12 | 1956-05-22 | Jean P Hollingsworth | Sanding attachment |
DE1652912A1 (de) * | 1966-03-25 | 1971-04-29 | Norton Co | Schleifscheibe |
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 |
---|---|
EP1400312B1 (de) | 2006-11-22 |
DE20214389U1 (de) | 2002-11-14 |
ATE345902T1 (de) | 2006-12-15 |
DE50305735D1 (de) | 2007-01-04 |
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