EP2099586B1 - Meule à lamelles - Google Patents

Meule à lamelles Download PDF

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Publication number
EP2099586B1
EP2099586B1 EP08707032.2A EP08707032A EP2099586B1 EP 2099586 B1 EP2099586 B1 EP 2099586B1 EP 08707032 A EP08707032 A EP 08707032A EP 2099586 B1 EP2099586 B1 EP 2099586B1
Authority
EP
European Patent Office
Prior art keywords
edge
grinding
abrasive
carrier
triangular
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.)
Not-in-force
Application number
EP08707032.2A
Other languages
German (de)
English (en)
Other versions
EP2099586A1 (fr
Inventor
Peter Degen
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 Schleifwerkzeuge GmbH and Co KG
Original Assignee
Rhodius Schleifwerkzeuge 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 Rhodius Schleifwerkzeuge GmbH and Co KG filed Critical Rhodius Schleifwerkzeuge GmbH and Co KG
Priority to PL08707032T priority Critical patent/PL2099586T3/pl
Publication of EP2099586A1 publication Critical patent/EP2099586A1/fr
Application granted granted Critical
Publication of EP2099586B1 publication Critical patent/EP2099586B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a method of producing a flap wheel having a plurality of triangular shingled overlapping abrasive flaps adhered to a rotationally drivable plate-shaped carrier, the abrasive flaps having a first straight edge and a second straight edge adjacent thereto, a third straight Edge is present, which cuts at least in its extension both the first edge and the second edge.
  • flap grinding wheels are known in different embodiments.
  • the grinding blades are trapezoidal and overlap shingles.
  • the shingled overlapping grinding blades are rectangular cut, which has the advantage in manufacturing that they can be cut without loss from a continuous band.
  • Plate-shaped carriers can be equipped fully automatically with these rectangular slats, wherein the grinding slats are individually cut off from a band and arranged one behind the other on the grinding plate.
  • the US 2 907 147 A shows a sanding pad whose support area is occupied with uniformly repeated overlapping sanding blades, which have the geometry of ring segments.
  • the shape of the carrier area of the sanding pad can be followed so well, although the possibility of cutting the sanding blades without loss from a belt is abandoned.
  • the object of the invention is now to propose an improved process for the production of the lamellar grinding wheels, with which lamellar grinding wheels can be produced with only a small amount of material.
  • "essentially” means that one or even two of the vertices of the triangle may be cut off a small distance without detracting from the "triangularity" feature. According to the triangularity is sufficient, as long as by Cutting edges are shorter than the edges forming the triangle. If necessary, the edges of the triangles can also be slightly curved or wavy.
  • the course of the third edge intersects the other two edges, even if the corners are cut off if necessary, only in their imaginary extension.
  • the edges may have a slightly curved or wavy shape, it is particularly advantageous for ease of handling if they are all rectilinear.
  • the grinding lamellae may be advantageous to form as complete triangles, in particular as right-angled, isosceles or equilateral triangles.
  • one of the corners, in particular the corner enclosed by the outer edge and the inner edge, that is to say the corner lying in the rear in relation to the direction of rotation, is cut off by one piece. This embodiment will be explained more specifically in the example description.
  • the first, in particular straight, edge forms a lower edge, which is placed on the carrier section in the later manufacturing process.
  • the adjoining second edge forms an outer edge insofar as it comes to lie in the outer region of the grinding wheel and forms the outer contour of the lamellar grinding wheel with the other lamellae.
  • the grinding blades have a third edge, which is aligned as an inner edge to the hub portion. According to the invention, the inner edge, at least in its extension, cuts both the lower edge and the outer edge.
  • the lower edge and the outer edge of a grinding lamella enclose an angle of 90 °, the lower edge and outer edge forming an isosceles triangle can train. Due to this special shape, a laying angle is made possible, which leads to a favorable grinding behavior and good cutting.
  • the straight side is particularly well suited for a guide when laying the Lammelenschleifin. This triangular shape can be processed accordingly well.
  • the lamellae form isosceles and thereby given equilateral triangles whose lower edge rests on the plate-shaped support and whose bottom edge opposite corner is preferably cut parallel to the lower edge.
  • This embodiment has the advantage that it can be fed as a pre-cut band of triangles hanging from each other to a feeder which occupies the plate-shaped carrier.
  • the triangles hang together on a common base, which is formed by a side strip of the band.
  • When covering the incoming, formed by the abrasive and precut tape is first placed with its in this case beveled end edge on the sloping outer support portion of the carrier and held by the existing adhesive there. After placing the still hanging by means of the side strip on the tape slat is cut off.
  • the separation of the lamella succeeds advantageously parallel to the lower edge, so that the cut corner is formed.
  • the inventive triangular geometry of the grinding lamellae leads to a number of advantages:
  • the first significant advantage is that the grinding lamellae can be cut without loss from a continuous band of sandpaper or abrasive cloth. In this case, an edge, advantageously the outer edge or the inner edge, formed by the band and therefore does not need to be cut.
  • a small number of such inventive grinding lamellae is sufficient to cover the entire carrier section in a shingling manner. This can help to reduce costs.
  • a small number of grinding lamellae a small angle of attack of the grinding lamellae results, which leads to a better grinding behavior and favors a flat design of the grinding plate.
  • high-performance grinding wheels require a large number of fins, which bring a lot of material into the outdoor area.
  • the triangular lamellar shape thus makes it possible to apply a large number of lamellae without the lamellae building up towards the bore. Since more abrasive material is present, a large number of fins leads to a longer service life of the tool.
  • "large number” means that the wearer carries more than 50, in particular more than 70, abrasive flaps or even more than 100 abrasive flaps.
  • the inclination of the outer surface of the support provided for the application of the lamellae can be more or less inclined in accordance with the order due to the large number of abrasive lamellae.
  • Another advantage is that the overlap of a sanding pad covered with the triangular sanding blades is greatest in the edge region, where the highest speeds occur and where the preferred working zone lies. Thus, most of the material is available at the most stressed point of the grinding wheel, while on the inside, where only a small contribution to grinding is made, there is less abrasive material. This also increases the service life of the lamellar grinding wheel. With the occupancy according to the invention, a relatively large amount of abrasive material is thus concentrated in the outer region of the pane compared to a conventional lamellar grinding wheel equipped with rectangular lamellae. By concentrating the abrasive material where it is needed, the cutting performance can be increased.
  • a further advantage is that the occupation with the triangles results in uniform compaction of the material over the grinding surface. This is one Fitting the flap wheel with the entire grinding surface on the workpiece favors, which leads to a particularly comfortable and controlled handling and thus to a precise grinding.
  • a large number of properties can be set via the edge length of the abrasive lamellae, via the angle of application and via the coverage density. These factors can be used to generate different types of flap discs, from flat discs for grinding with large chipping to pot-shaped or funnel-shaped discs.
  • By varying the dimensions, the number and the position angle of the triangular grinding lamellae it is possible to produce a wide range from relatively flat to high cup-shaped lamellar grinding wheels with a large lamella projection.
  • the abrasive slats are glued onto the carrier in such a way that the outer contour opens in a funnel shape towards the grinding surface and the outer edge of the grinding surface projects beyond the edge formed by the underside of the grinding slats and also the edge of the carrier.
  • Such grinding wheels are particularly suitable for grinding in corners. Due to the protruding edge formed by the grinding lamellae, the workpiece to be ground is also protected from the edge of the plate-shaped carrier.
  • a particularly good surface grinding is possible because they ensure sufficient abrasive material with homogeneous density over the entire surface.
  • pot-type lamellar grinding wheel has a recessed at the bottom of the funnel recording.
  • the position of the flange need not be lowered by the geometry of the carrier. Instead, the flange disappears due to the height of the applied lamellae. This fact also means that such a flap grinding wheel is well suited for surface grinding.
  • a carrier 1 is shown in the form of a round plate made of plastic, which has a standardized, the hub forming bore 2 in the middle.
  • This standardized hole is suitable for the use of a fastening element for fastening the work spindle of a working machine.
  • a carrier with a diameter of 115 mm instead of plastic, also carriers of fiber, wood or metal can be used.
  • the carrier 1 has an annular, conically sloping outward support portion 3, which is centered on the axis. In the present example, the angle of the cone is about 12 °. Depending on this, angles between 10 ° and 30 ° can also be used.
  • two concentric sausages 4 are applied from adhesive during the manufacturing process, with which the individual grinding blades are glued.
  • the automatic application of the sausages 4 is known per se and occurs, for example, in a first manufacturing step, after the raw plate has been gripped and placed on a holder.
  • the grinding blade 5 has an edge 6 adjacent to the lower edge 6.
  • Lower edge 6 and outer edge 7 each 30 mm long and arranged at right angles.
  • the abrasive blade 5 is cut from an abrasive tape of 30 mm width.
  • the grinding blade 5 is triangular, the inner edge 8 as a third edge, the lower edge 6 and the outer edge 7 intersects.
  • the lower edge lies in the direction of rotation of the flap grinding wheel at the front.
  • the grinding blade 5 thus has in the present case the geometry of a right-angled and isosceles triangle.
  • This triangle is glued onto the carrier 1 in such a way that the perpendicular bisector 9 of the outer edge 7 is arranged radially.
  • the radius 10 passing through the apex of the triangle is thus inclined by 23 ° with respect to the mid-perpendicular 10 (see angle ⁇ ).
  • FIG. 2 is a with 75 such triangular grinding blades 5 and thus fully occupied lamella grinding wheel 11 is shown, which is suitable for rotation in the arrow direction.
  • the shingle-like overlapping of the sanding lamellae 5 can be seen automatically.
  • the triangular sanding lamellae 5 were cut off from a sandpaper or abrasive fabric, ie an abrasive on a backing, by means of a cutting tool.
  • a sandpaper or abrasive fabric ie an abrasive on a backing
  • the abrasive slats are glued to the support 1 so that the outer contour 12 has a waist, wherein the edge 13 of the grinding surface 14 has at least almost the same diameter as the edge 15 formed by the underside of the grinding lamellae.
  • the flat grinding surface 14 Clearly visible is also the flat grinding surface 14.
  • the triangular lamella shape makes it possible to apply a high number of lamellae without the lamellae building up to the bore 2.
  • FIG. 3 a cup-shaped flap wheel 16 with 75 fins 17 is shown in perspective.
  • the fins 17 have the shape of a right triangle with a bottom edge of 30 mm in length and an outer edge of 40 mm in length. It can be clearly seen that the edge 18 of the grinding surface protrudes beyond the edge 19 formed by the underside of the grinding lamellae and a high-building funnel or pot shape results. The intended direction of rotation is indicated by the arrow.
  • FIG. 4 shows a band 20 of known abrasive material, in which, for example, with a knife roller, not shown, a running line in a triangle 21 was cut.
  • the band has left and right edge strips 22 of continuous material. It may be a quasi endless belt, which is pre-assembled wound on a roll and is moved in the direction of arrow A of the device for covering a sanding plate.
  • the slotted area can also be introduced shortly before the receipt of a plate in a previously unslotted belt.
  • the strip 20 divided into two by the slit 21 is separated from its starting position into its two strips 20a and 20b, each of the strips 20a and 20b being subjected to separate further processing.
  • Each of the strips 20a and 20b has, as a basis, the respective marginal tire with the triangles rising above it.
  • FIG. 5 shows the further processing of the part 20b, the initial triangle 24 is supplied to the plate to be occupied 23 by means of a not known per se known feed head.
  • the upper grain of the band is indicated in the drawing.
  • the band is wound so that the front edge 25 of the initial triangle 24 presses parallel to the surface of the support portion 3 in the adhesive sausages 4 and thus forms the lower edge.
  • the process of loading is timed, with the plate 23 being rotated under the belt but resting when it is put on.
  • the supply of the belt 20b stops and the attached starting blade 24 is separated from the belt 20b by a cut. This cut is performed by a knife provided on the feed head parallel to the lower edge 25. His direction is through the broken line 27 (see also FIG. 4 ) indicated.
  • the disc 23 placed on a corresponding holder continues to rotate one step in the direction of the arrow B before the band 20b rotates the next triangular lamella 26 on the plate 23 behind the latter previous seats.
  • the drive of the band can be supported by a kind of gear whose teeth engage in the tooth gaps of the abrasive tape.
  • the lamellae When all the lamellae are mounted, they are placed together in a further step by pressure from above to the plate before the fully occupied disc is removed and fed to a device which ensures the curing of the adhesive. In this way, the plate 23 is covered with lamellae whose three edges form an isosceles triangle whose corner forming the point is cut parallel to the opposite lower edge.
  • the uncut edge 31 of the band 20b forms the inner edge of the triangular lamellae.
  • the edge strip 22 is important for the cohesion of the triangular lamellae and for guiding the "serrated band" 20b. For this reason, it must also have a certain thickness, which is about 4 mm for the slats shown here a lower edge length of 40 mm. Because of the necessary severing of this edge strip 22, it also comes to the cut corner of the ansich triangular lamella.
  • FIG. 6 Now a finished flap grinding wheel 28 is shown with the slats 29 cut in this way. It can be clearly seen that the upper edge 30 of the grinding surface no longer projects beyond the edge formed by the underside of the grinding lamellae.

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

Claims (6)

  1. Procédé destiné à fabriquer un disque abrasif à lamelles, avec une pluralité de lamelles abrasives (5) triangulaires, se chevauchant à la manière de bardeaux, qui sont collées sur un support (1) en forma d'assiette susceptible d'être entraîné en rotation, les lamelles abrasives (5) comportant une première arête (6) droite et une deuxième arête (7) droite qui y est adjacente, une troisième arête (8) droite étant présente, qui au moins dans son prolongement recoupe aussi bien la première arête (6) qu'également la deuxième arête (7),
    caractérisé en ce
    qu'on coupe les lamelles (5) abrasives en tant qu'une pluralité de lamelles abrasives sans perte dans une bande (20) continue d'un abrasif en papier abrasif ou en tissu abrasif,
    en ce qu'on précoupe la bande (20) d' abrasif de sorte que la coupe provoque une encoche (21) s'écoulant dans une ligne triangulaire, qui sépare la bande (20) en deux rubans (20a) et (20b), un ruban (20b) comportant des lamelles triangulaires rattachées par leur base et étant amené vers un dispositif d'équipement,
    en ce qu'on croise le ruban (20b) de telle sorte que la première lamelle (24) triangulaire du ruban (20b) se pose par l'arête (25) antérieure sur la portion (3) de support du support (1, 23) et soit maintenue par de l'agent adhésif (4) qui y est rappliqué,
    en ce qu'on sectionne la première lamelle (24) triangulaire appliquée du ruban (20b) par une coupe (27) et
    en ce qu'après le sectionnement, on déplace le support (23) d'une étape vers l'avant dans la position destinée à poser la lamelle (26) suivante.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    les trois arêtes (6, 7, 8) forment un triangle isocèle dont l'angle formant la pointue est coupé à la parallèle de l'arête inférieure opposée.
  3. Procédé selon la revendication 1 ou la revendication 2,
    caractérisé en ce que
    la première arête forme une arête inférieure (6, 25), la deuxième arête droite qui y est adjacente forme une arête extérieure (7) et la troisième arête forme une arête intérieure (8, 31), les arêtes extérieures (7) des lamelles abrasives (5) formant le contour extérieur (12) du disque abrasif à lamelles (11).
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    qu'on colle les lamelles abrasives (24, 26) sur le support (1, 23), de telle sorte que le contour extérieur (12) s'ouvre en forme d'entonnoir vers la surface abrasive (14) et le bord de la surface abrasive (14) déborde par-dessus le bord (15) formé par la face inférieure des lamelles abrasives et également par-dessus le bord du support (23).
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce
    qu'on colle les lamelles abrasives (24, 26) sur le support (1, 23) de telle sorte que le contour extérieur (12) soit taillé et que le bord de la surface abrasive présente au moins approximativement le même diamètre que le bord formé par la face inférieure des lamelles abrasives.
  6. Procédé selon la revendication 1,
    caractérisé en ce
    qu'on amène chacun des rubans à un usinage ultérieur différent.
EP08707032.2A 2007-01-12 2008-01-14 Meule à lamelles Not-in-force EP2099586B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08707032T PL2099586T3 (pl) 2007-01-12 2008-01-14 Ściernica listkowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007002643A DE102007002643A1 (de) 2007-01-12 2007-01-12 Lamellenschleifscheibe
PCT/EP2008/000228 WO2008083994A1 (fr) 2007-01-12 2008-01-14 Meule à lamelles

Publications (2)

Publication Number Publication Date
EP2099586A1 EP2099586A1 (fr) 2009-09-16
EP2099586B1 true EP2099586B1 (fr) 2017-03-29

Family

ID=39259672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08707032.2A Not-in-force EP2099586B1 (fr) 2007-01-12 2008-01-14 Meule à lamelles

Country Status (6)

Country Link
EP (1) EP2099586B1 (fr)
CN (1) CN101578158B (fr)
DE (2) DE102007002643A1 (fr)
ES (1) ES2629984T3 (fr)
PL (1) PL2099586T3 (fr)
WO (1) WO2008083994A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009054696A1 (de) 2009-12-15 2011-06-16 August Rüggeberg Gmbh & Co. Kg Fächer-Schleifscheibe für den Einsatz an stationären Schleifmaschinen
JP6684895B2 (ja) * 2015-08-21 2020-04-22 アウグスト リュッゲベルク ゲーエムベーハー ウント コンパニー カーゲー 研磨工具及びこの種の研磨工具の製造方法
CN109202755A (zh) * 2018-10-30 2019-01-15 临邑禹王植物蛋白有限公司 一种波浪形树脂切割片及其模具和制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB624928A (en) * 1942-03-16 1949-06-20 Minnesota Mining & Mfg Improvements in or relating to flexible abrasive articles in disc form
US2907147A (en) * 1957-12-23 1959-10-06 F L & J C Codman Company Radial face rotary buffing element
CN2102822U (zh) * 1990-12-26 1992-04-29 程东利 多用途叶片式砂布轮
DE29510727U1 (de) 1995-01-24 1995-08-31 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG, 51766 Engelskirchen Werkzeug, insbesondere Schleif- oder Polierteller
DE19604540A1 (de) * 1996-02-08 1997-08-14 Leo Klapperich Oberflächen-Bearbeitungsvorrichtung
DE10015418C2 (de) * 2000-03-28 2001-04-19 Eisenblaetter Gerd Gmbh Schleifwerkzeug und Verfahren zu dessen Herstellung
DE20006127U1 (de) 2000-04-03 2000-07-06 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG, 51766 Engelskirchen Schleiflamelle und Schleifteller mit einer Mehrzahl von solchen
CN2452681Y (zh) * 2000-12-13 2001-10-10 陈显达 砂布轮的砂布组合结构
US6945863B1 (en) * 2004-08-19 2005-09-20 Weiler Corporation Rotary finishing disc
DE102006024015A1 (de) * 2006-05-23 2007-11-29 August Rüggeberg Gmbh & Co. Kg Fächer-Schleifscheibe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN101578158B (zh) 2012-11-28
PL2099586T3 (pl) 2017-10-31
WO2008083994A1 (fr) 2008-07-17
DE102007002643A1 (de) 2008-07-17
CN101578158A (zh) 2009-11-11
EP2099586A1 (fr) 2009-09-16
DE102008013961B3 (de) 2009-04-09
ES2629984T3 (es) 2017-08-17

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