EP4031327B1 - Schleifelement für rotationsschleif- oder polierwerkzeuge - Google Patents

Schleifelement für rotationsschleif- oder polierwerkzeuge

Info

Publication number
EP4031327B1
EP4031327B1 EP20780917.9A EP20780917A EP4031327B1 EP 4031327 B1 EP4031327 B1 EP 4031327B1 EP 20780917 A EP20780917 A EP 20780917A EP 4031327 B1 EP4031327 B1 EP 4031327B1
Authority
EP
European Patent Office
Prior art keywords
abrasive
cloth
abrasive cloth
particles
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.)
Active
Application number
EP20780917.9A
Other languages
English (en)
French (fr)
Other versions
EP4031327C0 (de
EP4031327A1 (de
Inventor
Karsten Larsen
Claus Groth HEDE
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.)
Flex Trim AS
Original Assignee
Flex Trim AS
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 Flex Trim AS filed Critical Flex Trim AS
Publication of EP4031327A1 publication Critical patent/EP4031327A1/de
Application granted granted Critical
Publication of EP4031327B1 publication Critical patent/EP4031327B1/de
Publication of EP4031327C0 publication Critical patent/EP4031327C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/04—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising a plurality of flaps or strips arranged around the axis
    • 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
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • 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
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/06—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery the flaps or strips being individually attached
    • 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
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes

Definitions

  • the present invention relates to a grinding element as described in the preamble of claim 1 of the present patent application.
  • an abrasive cloth also refers to a polishing cloth, etc.
  • Grinding elements for use in grinding or polishing machines designed, e.g., as drum grinders or grinding wheels are known. These typically consist of a combination of an abrasive cloth and support brushes.
  • the abrasive cloth and the support brushes are typically mounted in an elongate support profile rail, in which the abrasive cloth and the support brushes protrude from the profile rail.
  • the support brushes may be mounted in an elongate support profile rail, and the abrasive cloth may be placed outside the profile rail or directly on the brushes.
  • the profile rail is typically meant to secure the grinding element in an undercut groove on a tool on grinding or polishing machines.
  • the abrasive cloth is terminated in an exposed outer edge area extending beyond the top of the brushes and along the upper end portions of the support brushes, which forms the active abrasive area of the abrasive cloth, when in use.
  • this abrasive area is only a part of the whole abrasive cloth, which is mounted in the profile rail.
  • known grinding elements are limited in their effect, in that their flexibility, pliability, perpendicular to the longitudinal direction, are determined by the flexibility and pliability of the sandpaper, and in that their flexibility, pliability, is an important parameter in treating surfaces, when grinding or polishing various workpieces.
  • grinding cloths with a substantial material price are also known, as are machines, for which a long service life of the grinding elements is important.
  • US 4,969,299 discloses a rotary grinding tool with grinding elements, which contains flaps consisting of cloth with glued-on abrasive grains. Said citation contains no instructions as to the use of support brushes. An area of the cloth for supporting the flaps is kept free of abrasive grains.
  • WO 2011/110176 discloses a grinding element of the type described in the preamble of claim 1 of the present patent application.
  • this grinding element has worked acceptably in many applications, in that it has a history of reduced consumption of expensive abrasive materials and a long service life.
  • disadvantages were encountered in the form of abraded grooves in surfaces treated with tools using these grinding elements.
  • the object of the present invention is being able to use prior-art grinding elements, which reduces the consumption of expensive grinding materials, and which have a long service life, and also achieve uniform surface grinding, thereby minimizing problems with adhesion and glare.
  • the present invention is characterized in that the particles of the abrasive material in a row are arranged with the particles offset relative to the particles in adjacent rows, and in that the particles in the adjacent rows are spaced apart, such that the abrasive particles of two consecutive rows overlap in the longitudinal direction of the abrasive cloth.
  • the commercially available abrasive cloths are machine-manufactured with the particles of the abrasive material placed in adjacent rows.
  • the particle rows are placed such that the particles in every other row are offset from one another, when viewed transversely to the length of the rows.
  • the slats of the grinding element are provided with rows of particles, which are oriented parallel to the vertical direction. This has caused abraded grooves with areas, in which a surface is being ground in areas adjacent to the rows, and minor or no abrasion in areas between these rows. In other words, areas will appear in the longitudinal direction of the abrasive cloth, in which there are no abrasive particles that can be used to form the surface being machined.
  • the abrasive particles overlap in the longitudinal direction of the abrasive cloth.
  • particles will be provided in the longitudinal direction of the abrasive cloth.
  • the particles are appropriately arranged in rows.
  • As the particles of the abrasive material are arranged in rows generally commercially available abrasive cloths may be used. By changing the orientation of the rows, such that they are no longer parallel to the vertical direction of the abrasive cloth, it is possible to create overlapping of the abrasive particles in the longitudinal direction of the abrasive cloth.
  • the invention in a surprisingly simple way allows for creating an abrasive cloth, in which the arrangement of the particles of the abrasive material makes it possible to grind the whole surface which is being covered by the abrasive cloth. Consequently, no specific abraded grooves occur with areas, where no grinding was performed.
  • Such areas of the surface, where no abrasion occurs, are undesirable, in that they appear with a smooth surface.
  • This smooth surface may partly result in poor adhesion, but may also cause reflection and glare emanating from the top of the surface.
  • a surface will be created, which is rougher and without smooth areas, which cause glare. This greater surface roughness will also create a larger area, which makes for a larger surface for the adhesion of coating or varnish. Thus, adhesion will be increased.
  • the abrasive material consists of particles placed in the active area of the abrasive cloth. Hence, this area has a particularly effective abrasive capability, which increases the service life in relation to traditional abrasive cloths.
  • the abrasive material consists of diamond particles.
  • the abrasive material may comprise units of material, whose unit size is between 0.1 and 1,000 micrometers. This means that the abrasive material may have the consistency of a powder, in that the unit size is at the lower end of the range, and that the abrasive material may consist of particles, in that their unit size is at the upper end of the range.
  • the said range is typical of the grinding and polishing jobs that are characteristic of the invention.
  • the units of the abrasive material may vary in terms of shape and structure. Hence, the units may be angular or round, or the abrasive material units may be a combination thereof. Moreover, the units may be crystalline or non-crystalline.
  • the abrasive material in the form of particles is characterized by the abrasive cloth itself having local projections, which create the actual effective contact with the surface to be abraded.
  • the area between the local projections give rise to channels, which can divert abrasive dust away from the surface, which is being abraded.
  • these projections and channels provide increased heat conduction.
  • the abrasive cloth is cut out from the outer exposed edge area in order to form slats.
  • the abrasive cloth is typically cut out perpendicular to the profile rail from the outer exposed edge of the cloth.
  • the abrasive cloth may be cut out from the outer exposed edge of the cloth to the profile rail in order to form long slats.
  • the abrasive cloth may be cut out from the outer exposed edge of the cloth to a position between the active area and the profile rail in order to form short slats.
  • the abrasive cloth may be cut out in order to form slats with identical slat lengths or to form slats with varying slat lengths.
  • the grinding element according to the invention is characterized in that the adjacent rows are arranged at an angle different from 0° with respect to the vertical direction.
  • varying the orientation of the rows slightly relative to the vertical direction of the abrasive cloth can make the particles overlap in the longitudinal direction of the abrasive cloth.
  • the angle may be varied from 1° to 179°.
  • the abrasive cloth is preferably arranged, such that the adjacent rows are arranged at an angle of 90° relative to the vertical direction of the abrasive cloth.
  • the grinding element according to the invention is characterized in that the orientation of the adjacent rows is in the longitudinal direction.
  • the grinding element according to the invention is characterized in that the extension of the particles in the direction of the row is greater than the spacing between the particles in adjacent rows.
  • the grinding element according to the invention is characterized in that the abrasive material is a super-abrasive material, which consists of particles, as well as of powder of, e.g., diamonds or similar materials.
  • the abrasive material is a super-abrasive material, which in essence means that the units of the abrasive material have a certain strength, such as crystal strength or tensile strength, and that this strength is roughly similar to the strength of diamonds.
  • An example of an alternative embodiment is the super-abrasive material Boron Nitride with a cubic unit shape (cBN), which has a hardness roughly the same of as diamonds and, at the same time, thermal conductivity comparable to traditional abrasive materials.
  • cBN cubic unit shape
  • the super-abrasive material is provided with a coating, which may be a metal coating and which may be based on, e.g., nickel, copper or similar coating materials.
  • the grinding element according to the invention is characterized in that the active area constitutes between 1 ⁇ 4 and 1 ⁇ 2 and typically about a third of the abrasive cloth height.
  • an active area is obtained in practice, which has the desired abrasive effect, as well as a material-saving effect over abrasive cloths, which also have abrasive material in non-active areas of the abrasive cloth.
  • the grinding element is characterized in that the active area has an abrasive profile in the vertical direction of the abrasive cloth.
  • an abrasive profile in the vertical direction of the abrasive cloth.
  • this is meant, e.g., an abrasive profile with varying abrasive material or, e.g., an abrasive profile with an on/off abrasive material.
  • the grinding element is characterized in that the active area of the abrasive material and up to the end of the outer exposed edge area includes a smaller area of the abrasive cloth, which is not coated with an abrasive material, and which constitutes between zero and an eighth of the abrasive height of the cloth.
  • the grinding element according to the invention is characterized in that the height of the abrasive cloth is between 20 and 80 mm, and typically about 40 mm.
  • the grinding element provides a suitable abrasive effect for practical applications in manually controlled machines and tools, and in machines and tools typically used in the production of elements in the industry.
  • the grinding element according to the invention is characterized in that the abrasive material is made to adhere to the abrasive cloth in the active area using a binder, which bonds the said particles to the abrasive cloth. If also using a powder, such a powder will also be bonded to the abrasive cloth by the binder.
  • the grinding element has the active area directly embedded in the abrasive cloth, and the abrasive cloth can easily be replaced in the profile rail, when worn.
  • the abrasive cloth can then be recycled, in that a new abrasive material may be applied in the active area.
  • the binder is a resin-based binder.
  • other binders such as varnish, adhesive, or the like, can be used.
  • the binder may be a polyamide or a phenolate.
  • the grinding element according to the invention is characterized in that the abrasive material is provided on a second cloth, which is mounted in the active area of the abrasive cloth.
  • the idea is that the abrasive material is applied to a separate substrate, i.e., the second cloth, and that the second substrate and the active area of the abrasive cloth are set up for mounting.
  • Mounting may be done by adhesive bonding, welding, Velcro-locking, or a rail arrangement.
  • the grinding element according to the invention is characterized in that the flexibility of the abrasive cloth in an area between the active area and the profile rail is greater than the flexibility of the abrasive cloth in the active area.
  • Flexibility refers to pliability and substantially in a direction perpendicular to the longitudinal direction of the profile rail.
  • Flexibility in the active area of the abrasive cloth is substantially related to the layer of abrasive material in the active area of the abrasive cloth.
  • the flexibility of the abrasive cloth in an area between the active area and the profile rail is substantially related to the flexibility of the support layer of the abrasive cloth, which is situated between the active area and the profile rail.
  • the inner area comes with at least one area of increased flexibility.
  • the said area is brought about, in that the abrasive cloth in a narrow area is thinner than the rest of the area.
  • the grinding element according to the invention is characterized in that the abrasive cloth is made of a plastic material, such as Polyethylene (PE), Polypropylene (PP), or Polyvinyl chloride (PVC), and in that the abrasive cloth is made of a rubber material, or that the abrasive cloth is realized as a biomaterial.
  • a plastic material such as Polyethylene (PE), Polypropylene (PP), or Polyvinyl chloride (PVC)
  • Figs. 1-4 show the basic design of a prior-art grinding element 1, as disclosed in WO 2011/110176 .
  • This design shares the design of a grinding element 1 according to the present invention. The difference lies in the way, in which the abrasive particles are arranged on the abrasive cloth.
  • the grinding element 1 according to the invention will be explained with reference to the explanation of the known grinding element.
  • the novel features of the invention will be explained in more detail with reference to Figs. 5-8 .
  • Fig. 1 shows a grinding element 1 secured in a profile rail 2, which is intended for use in a grinding or polishing tool or machine.
  • the profile rail 2 is elongate, and thus the grinding element 1 has a natural longitudinal direction 3.
  • An abrasive cloth 4 is mounted in the profile rail 2, as are support brushes 5.
  • the abrasive cloth 4 is provided with slats 6.
  • the profile rail 2 limits the risk of the abrasive cloth 4 and the support brushes 5 being extracted from the profile rail.
  • the abrasive cloth 4 and the support brushes 5 ascend or radiate substantially in the same vertical direction 7 within a narrow angle from the mounting area of the profile rail 2 and in a vertical direction 7.
  • the abrasive cloth 4 terminates at an edge of the cloth 8, and the distance between the edge of the cloth 8 and the profile strip 2 defines the height of the cloth 9.
  • the support brushes 5 are terminated in a support brush extremity 10, and the distance between the support brush extremity 10 and the profile strip 2 defines the height 11 of the support brush.
  • the abrasive cloth length 12 is defined as the extension of the abrasive cloth 4 in the longitudinal direction 3
  • the support brush length 13 is defined as the extension of the support brushes 5 in the longitudinal direction 3.
  • the abrasive cloth 4 is realized with a plurality of slats 6, which in the specific embodiment have roughly the same length 14. However, nothing stands in the way of varying the slat length 14.
  • the brush length 13 exceeds the canvas length 12, and there is a plurality of bristles per slat length 14.
  • the height 9 of the cloth exceeds the height 11 of the support brush.
  • the inactive side 15 of the abrasive cloth 4 faces the support brushes 5.
  • Fig. 2 shows the same grinding element 1 as in Fig. 1 , but from a different side, wherein, in particular, the active side 16 of the abrasive cloth 4 appears.
  • the active side 16 of the abrasive cloth 4 has an active area 17 (marked as ---), which is coated with an abrasive material 18.
  • the active area 17 is an area at an outer exposed edge area 19 (marked as 7) of the abrasive cloth 4 from the edge of the abrasive cloth 8 toward the profile rail 2. It is immaterial whether the outer exposed edge area 19 has a height, which is greater than the height of the active area 17. The important thing is that the two said areas 17, 19 have a certain overlap.
  • the abrasive material 18 is provided as a super-abrasive material 20, which consists of diamonds 21 in the form of particles 22. Also illustrated here is a powder 23, which may optionally be used with the particles 22.Here, the abrasive material 18 is provided on a second cloth 24, which furthermore is mounted in the active area 17 of the abrasive cloth 4.
  • the second cloth 24 is glued to the abrasive cloth 4.
  • the abrasive material 18 on the second cloth 24 is cut similarly to the slats 6.
  • the particles 22 are placed in rows 26. It is quite customary in commercially available abrasive canvases of this type for the particles to be placed in adjacent rows on a canvas.
  • the particles 22 in every other row 26 are placed next to one another, as seen in the longitudinal direction 3.
  • the particles 22 in the intermediate rows 26 are located offset next to the spaces.
  • the rows 26 of particles 22 are oriented parallel to the vertical direction 7.
  • the cut-out is done parallel to the vertical direction 7 in the spaces 30 between the rows 26. In these spaces 30, the particles 22 do not overlap, such that the spaces 30 in the longitudinal direction 3 of the abrasive cloth have no abrasive material. This gives rise to abraded grooves, in that areas on the surface 25 (see Figs. 3 and 4 ), which are abraded with the grinding element 1, will not be coated by the particles 22.
  • Fig. 3 is an isometric view of the grinding element 1 showing the support brushes 5 and the active side 16 of the abrasive cloth 4.
  • the extremity of the support brush 10 rests or acts on a surface 25, which surface 25 also interacts here with the inactive side 15 of the abrasive cloth 4.
  • the abrasive cloth 4 substantially has inner and outer flexibility, wherein the outer flexibility is associated with the active area 17 of the abrasive cloth 4, and the inner flexibility is associated with the area between the active area 17 and the profile rail 2.
  • Fig. 4 is an isometric view of the grinding element 1, which is preferably a cross-section perpendicular to the longitudinal direction 3 of the grinding element 1, in use, or acting with the active side 16 of the abrasive cloth 4 facing the surface 25, wherein the support brushes 5 push on the inactive side 15 of the abrasive cloth 4, such that the active area 17 of the abrasive cloth 4 acts or works on the surface 25.
  • Fig. 5 shows a section of an abrasive cloth 4 for a grinding element 9 according to the present invention.
  • the device shown in Fig. 5 corresponds to the section in Fig. 2 and thus illustrates the abrasive cloth 16, upon which a second canvas 24 is arranged, and in which the abrasive material 18 is provided.
  • the abrasive material 18 is provided in the form of particles 22, which are arranged in rows 26.
  • the rows 26 are arranged parallel to the longitudinal direction 3 of the abrasive cloth, and thus perpendicular to the vertical direction 7 of the abrasive cloth.
  • the abrasive rows have a direction 28 at an angle 27 with respect to the vertical direction 7
  • the extension 30 of the particles 22 is in the direction of the row 28, and is greater than the spacing 29 between the particles 22 in the adjacent rows 26. Furthermore, the particles are arranged offset relative to one another in the rows 26. In this way, an overlap of abrasive particles over the whole longitudinal direction 3 of the abrasive cloth is obtained, such that any area of a surface 25 being machined will be coated with particles 22 from one or the other row 26.
  • Fig. 6 has an enlarged section showing the abrasive particles 22 arranged in rows 26. It also illustrates more clearly that the extent 30 of the particles is greater than the distance 29 between the particles 22.
  • the particles are shown with a substantially circular shape. Alternatively, however, the particles 22 may have a different shape.
  • Fig. 7 illustrates a surface 25 abraded with a conventional grinding element of the type shown in Fig. 1 . It can be seen that the surface 25 is provided with abraded grooves or depressions 32. These are created in areas next to each row 26 of particles 22, which in the known design are oriented in the vertical direction 7 of the abrasive cloth.
  • This flat surface 31 is an untreated flat surface, which appears without roughness. It may be smooth, which makes it difficult for varnish or other coating to adhere to the plane 31 of the flat surface 25. These flat surfaces 31 will also give rise to undesired reflections and glare from incident light, in that no diffusion occurs from the flat surfaces 31.
  • Fig. 8 illustrates a surface 25 machined with a grinding element according to the present invention. It can be seen here that the whole top surface of the plane 25 is machined by grinding elements, such that a series of adjacent abrasive grooves or depressions 32 are formed.
  • peaks 33 are provided, which are approximately sharp.

Landscapes

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

Claims (10)

  1. Schleifelement (1) zur Verwendung in Rotationsschleif- oder -polierwerkzeugen, die zum Schleifen oder Polieren von Oberflächen verwendet werden, und von einem Typ, der eine längliche Profilschiene (2) und ein Schleiftuch (4) und Stützbürsten (5) umfasst, und wobei das Schleiftuch (4) und die Stützbürsten (5) in oder an der Profilschiene (2) montiert sind, so dass das Schleiftuch (4) auf seiner inaktiven Seite (15), die den Stützbürsten (5) zugewandt ist, von den Stützbürsten (5) gestützt wird, wobei das Schleiftuch außerhalb der Profilschiene (2) eine Höhe (9) des Schleiftuchs in einer vertikalen Richtung (7) und eine Tuchlänge (12) in einer Längsrichtung (3) aufweist, wobei die Stützbürsten (5) und das Schleiftuch (4) unterschiedliche Höhen, eine Stützbürstenhöhe (11) bzw. eine Schleiftuchhöhe (9), von der Profilschiene (2) aufweisen, so dass das Schleiftuch (4) durch einen äußeren freiliegenden Kantenbereich (19) abgeschlossen wird, der sich über die Oberseite der Stützbürsten (5) hinaus erstreckt, da die Höhe (9) des Tuchs die Höhe (11) der Stützbürsten (5) übersteigt, und ein kurzes Stück entlang der äußeren freiliegenden Endabschnitte (10) der Stützbürsten (5) nach unten, wobei der äußere freiliegende Kantenbereich (19)
    bei Gebrauch einen aktiven Bereich (17) einer aktiven Seite (16) des Schleiftuchs (4) bildet, wobei das Schleifmaterial (18) nur auf den aktiven Bereich (17) des Schleiftuchs (4) aufgebracht ist, wobei das Schleifmaterial aus Partikeln (22) besteht, wobei das Schleiftuch (4) von einer äußeren freiliegenden Kante des Tuchs (8) gegen die Profilschiene in einer zur vertikalen Richtung (7) parallelen Richtung geschnitten ist, um Lamellen (6) zu bilden, und wobei die Partikel in benachbarten Reihen (26) angeordnet sind, dadurch gekennzeichnet, dass die Partikel (22) des Schleifmaterials in einer Reihe (26) mit den Partikeln relativ zu den Partikeln (22) in benachbarten Reihen (26) versetzt angeordnet sind, und dass die Partikel in den benachbarten Reihen (26) beabstandet (29) sind, so dass sich die Schleifpartikel von zwei aufeinanderfolgenden Reihen in der Längsrichtung (3) des Schleiftuchs überlappen.
  2. Schleifelement (1) nach Anspruch 1, dadurch gekennzeichnet, dass die benachbarten Reihen (26) in einem Winkel (27), der von 0° verschieden ist, in Bezug auf die vertikale Richtung (7) angeordnet (28) sind.
  3. Schleifelement (1) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass die benachbarten Reihen (26) mit ihrer Ausrichtung (28) in der Längsrichtung (3) angeordnet sind.
  4. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Partikel (22) eine Ausdehnung (30) in der Ausrichtung (28) der Reihe aufweisen, die größer ist als der Abstand (29) zwischen den Partikeln (22) in den benachbarten Reihen (26).
  5. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schleifmaterial (18) ein superabrasives Schleifmaterial (20) ist, das aus den Partikeln (22) und einem Pulver (23) aus beispielsweise Diamanten (21) oder ähnlichen Materialien besteht.
  6. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der aktive Bereich (17) zwischen ¼ und ½ und typischerweise etwa ein Drittel der Höhe (9) des Schleiftuchs (4) ausmacht.
  7. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schleiftuchhöhe (9) des Schleiftuchs (4) zwischen 20 mm und 80 mm und typischerweise etwa 40 mm beträgt.
  8. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schleifmaterial (18) dazu gebracht wird, an dem Schleiftuch (4) im aktiven Bereich (17) mit einem Bindemittel zu haften, das die Partikel (22) an das Schleiftuch (4) bindet.
  9. Schleifelement (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Schleifmaterial (18) auf einem zweiten Tuch (24) bereitgestellt ist, wobei das zweite Tuch (24) im aktiven Bereich (17) des Schleiftuchs (4) montiert ist.
  10. Schleifelement (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Flexibilität des Schleiftuchs (4) in einem Bereich zwischen dem aktiven Bereich und der Profilschiene größer ist als die Flexibilität des Schleiftuchs (4) im aktiven Bereich.
EP20780917.9A 2019-09-18 2020-09-18 Schleifelement für rotationsschleif- oder polierwerkzeuge Active EP4031327B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201970574A DK180350B1 (da) 2019-09-18 2019-09-18 Slibeelement til brug i roterende slibe- eller pudseværktøj
PCT/DK2020/050258 WO2021052548A1 (en) 2019-09-18 2020-09-18 Grinding element for use in rotary grinding or polishing tools

Publications (3)

Publication Number Publication Date
EP4031327A1 EP4031327A1 (de) 2022-07-27
EP4031327B1 true EP4031327B1 (de) 2025-11-05
EP4031327C0 EP4031327C0 (de) 2025-11-05

Family

ID=74184153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20780917.9A Active EP4031327B1 (de) 2019-09-18 2020-09-18 Schleifelement für rotationsschleif- oder polierwerkzeuge

Country Status (8)

Country Link
US (1) US20220402099A1 (de)
EP (1) EP4031327B1 (de)
CN (1) CN114728402B (de)
BR (1) BR112022004866A2 (de)
DK (1) DK180350B1 (de)
ES (1) ES3056536T3 (de)
PL (1) PL4031327T3 (de)
WO (1) WO2021052548A1 (de)

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DK201970574A1 (da) 2021-01-22
US20220402099A1 (en) 2022-12-22
BR112022004866A2 (pt) 2022-06-07
EP4031327C0 (de) 2025-11-05
CN114728402A (zh) 2022-07-08
WO2021052548A1 (en) 2021-03-25
PL4031327T3 (pl) 2026-03-09
ES3056536T3 (en) 2026-02-23
CN114728402B (zh) 2024-06-04
DK180350B1 (da) 2021-01-22
EP4031327A1 (de) 2022-07-27

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