US20130344783A1 - Grinding wheel - Google Patents

Grinding wheel Download PDF

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Publication number
US20130344783A1
US20130344783A1 US13/822,752 US201113822752A US2013344783A1 US 20130344783 A1 US20130344783 A1 US 20130344783A1 US 201113822752 A US201113822752 A US 201113822752A US 2013344783 A1 US2013344783 A1 US 2013344783A1
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US
United States
Prior art keywords
holes
extraction
grinding disk
hole
radial line
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.)
Abandoned
Application number
US13/822,752
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English (en)
Inventor
Roman Zaech
Peter Eggenberger
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EGGENBERGER, PETER, ZAECH, ROMAN
Publication of US20130344783A1 publication Critical patent/US20130344783A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention relates to a circular grinding disk comprising a multiplicity of extraction holes according to the preamble of claim 1 .
  • Such grinding disks are also known as “multihole grinding disks”.
  • grinding disks with extraction holes that pass through the grinding surface have long been known.
  • the grinding dust can be discharged through these extraction holes.
  • These grinding disks may be fastened to grinding pads, which likewise have corresponding extraction holes. This discharge is particularly effective if the grinding dust is actively extracted by producing a negative pressure in the grinding pad.
  • Such grinding disks of the generic type are known for example from EP 1 977 858 A1.
  • the grinding disks disclosed there have a multiplicity of extraction holes through which the dust can be extracted.
  • the pattern of holes On account of the special arrangement of the extraction holes (known as the “pattern of holes”), extraction of the grinding dust is possible virtually independently of the relative rotational position between the grinding disk and the grinding pad.
  • Further grinding disks of the generic type with other patterns of holes are known for example from WO 2008/042775 A1, where an arrangement of the extraction holes at the corner points of a triangular grid is described, or from EP 781 629 A1, where the extraction holes are arranged at the corner points of a square grid.
  • the pattern of holes should satisfy a great many criteria simultaneously.
  • the overall surface area of all the extraction holes should be large enough that extraction can take place in the first place.
  • the overall surface area of all the extraction holes must not be too large, in order that a sufficient amount of abrasive particles can be arranged on the remaining grinding surface to ensure removal of material in the first place.
  • the grinding disk can be fastened to as many different grinding pads as possible, the pattern of holes of which may vary greatly from supplier to supplier. There should at the same time always be a sufficient overlap between the extraction holes of the grinding disk and those of the grinding pad. Furthermore, it is desirable that the extraction capacity is substantially independent of the relative rotational position between the grinding disk and the grinding pad; the user then no longer has to laboriously bring the extraction holes of the grinding disk and the grinding pad into line with one another.
  • the distance between the holes should also on the one hand not be chosen to be too great, since otherwise uniform extraction is not possible.
  • the distance between the extraction holes must also not be too small, since the grinding disk could otherwise lose its stability and, for example, could break or tear at the areas between the extraction holes.
  • a circular grinding disk with a center point and a multiplicity of extraction holes, in particular circular extraction holes.
  • the grinding disk may have a fastening opening, in particular a circular fastening opening, at its center.
  • the center point should be understood as meaning only an imaginary reference point, from which the geometrical arrangement of extraction holes described below is defined.
  • the center point of the grinding disk is understood as meaning the geometrical center point of the circular circumference of the grinding disk.
  • Each extraction hole is assigned a center point of its own. This center point is likewise an imaginary reference point of the grinding disk, which corresponds to the geometrical center of gravity of the extraction hole. If the extraction hole is circular, for example, its center point coincides with the geometrical center point of the circle that forms the periphery of the extraction hole.
  • the center point of each extraction hole defines on the one hand a radial line which extends from the center point of the grinding disk and on which the center point of the extraction hole lies.
  • the center point of the extraction hole defines a circle of holes, which is concentric to the center point of the grinding disk and on which the center point of the extraction hole lies. Therefore, the center point of the extraction hole then lies on the point of intersection of the radial line with the circle of holes.
  • the arrangement of the extraction holes is characterized by the following properties: firstly, on at least one radial line extending from the center point, only the center point of a single extraction hole is arranged.
  • a radial line is referred to here and hereafter as a single-hole radial line.
  • the center point of all the extraction holes that are arranged on a single-hole radial line are intended to lie substantially on a common single-hole circle with the same radius. They are consequently all at substantially the same distance from the center point of the grinding disk.
  • the word “substantially” means here that the distances between the center point of the extraction area from the center point of the grinding disk differ from one another at most by half a diameter of the individual extraction holes.
  • the above property does not exclude the possibility that the center points of extraction holes that are not arranged on a single-hole radial line also lie on the single-hole circle. However, at least one of the extraction holes on the single-hole circle must at the same time lie on a single-hole radial line.
  • each radial line comprises the center point of an extraction hole on at least one radius on which the two radial lines that are adjacent to the radial line in the circumferential direction have no center point of an extraction hole.
  • the combination of these features leads to a particularly good compromise between extraction capacity and uniformity, independence from the pattern of holes of the grinding pad and the positioning and stability of the grinding disk.
  • the arrangement of the extraction holes that lie both on a single-hole radial line and on the single-hole circle ensures, for example, that the extraction holes are offset in relation to one another in the circumferential direction.
  • a relatively uniform arrangement of the extraction holes is achieved, without the extraction holes having to lie too close together to reduce the stability of the grinding disk.
  • the removal capacity that is to say the amount of material removed from a machined surface during grinding per unit of time
  • the roughness of the machined surface remains virtually unchanged.
  • the number of circles of which the radius is smaller than the radius of the single-hole circle lies in the range from 2 to 5.
  • the single-hole circle is therefore the third-smallest, fourth-smallest, fifth-smallest or sixth-smallest radius on which extraction holes are arranged.
  • the number of circles of which the radius is smaller than the radius of the single-hole circle is 3 or 4. The more circles of holes lie within the single-hole circle, the further out the single-hole circle lies. In these regions of the grinding surface that are situated further out, the angular offset described above is particularly favorable.
  • Each radial line that has at least one center point of an extraction hole may be assigned to a radial line type.
  • this radial line type indicates the entirety of the radii on which the center point of an extraction hole is arranged on this radial line.
  • a radial line type could be characterized in that a first hole is arranged on the smallest radius, a second hole is arranged on the third-smallest radius and a third hole is arranged on the fifth-smallest radius.
  • the grinding disk has at most 5, preferably at most 4, more preferably at most 3, particularly preferably precisely 3, different radial line types.
  • One of these radial line types is in this case always the radial line type of the single-hole radial lines. Since, according to the invention, the center points of all the extraction holes that are arranged on a single-hole radial line lie substantially on a common single-hole circle, the grinding disk comprises just one single-hole radial line type. As a consequence of the properties according to the invention, the other radial line types always comprise at least the center points of two extraction holes.
  • At most 6, preferably at most 4, particularly preferably at most 3 center points of extraction holes are arranged on each radial line.
  • it can be ensured that the distances of the extraction holes from one another are great enough to ensure the stability of the grinding disk.
  • the center point of at least 3 extraction holes are arranged on each radial line that is not a single-hole radial line. In other words, there are therefore no radial line types that comprise precisely two extraction holes. This has the effect that the grinding disk contains a sufficient number of extraction holes.
  • the number of all the extraction holes lies in the range from 20 to 100, preferably from 30 to 80, particularly preferably from 40 to 64. This provides a good compromise between great and uniform extraction and at the same time stability of the grinding disk.
  • the number of radial lines that comprise at least one center point of an extraction hole advantageously lies in the range from 10 to 50, preferably between 20 and 30, and is particularly preferably 24.
  • a smaller number of radial lines would mean an accumulation of the extraction holes in certain regions of the grinding disk, which would lead to extraction that is not uniform.
  • a greater number of radial lines would lead to a high density of the extraction openings, which would reduce the stability of the grinding disk.
  • the number of circles of holes on which the center point of at least one extraction hole is arranged lies in the range from 3 to 10, preferably from 4 to 8, particularly preferably from 4 to 6. Too small a number of circles of holes would lead to extraction that is not uniform along the radial direction. By contrast, too great a number would bring about a loss of stability in the radial direction.
  • the radii of the circles of holes are distributed substantially uniformly over the radius of the grinding disk as a whole.
  • the smallest radius of a circle of holes may be between 15% and 35%, preferably between 20% and 30%, of the radius of the grinding disk.
  • the largest radius of a circle of holes may be between 70% and 90%, preferably between 75% and 85%, of the radius of the grinding disk.
  • the average absolute deviation of the radial distances respectively between two adjacent circles of holes may be used for characterizing the uniform distribution of the radii. Preferably, this average absolute deviation is less than 30%, preferably less than 15%, of the average radial distance between two adjacent circles of holes.
  • the average number of extraction holes of which the center points lie on a radial line preferably lies in the range from 1.2 to 3, preferably from 1.4 to 2.85, particularly preferably from 1.6 to 2.7. A smaller average number would lead to extraction that is not uniform along the radial direction, while a greater average number would reduce the stability of the grinding disk.
  • the average number of extraction holes of which the center points lie on a circle of holes preferably lies in the range from 6 to 20, preferably from 8 to 15, particularly preferably from 10 to 12.5.
  • a smaller average number would lead to extraction that is not uniform along the circumferential direction, while a greater average number would reduce the stability of the grinding disk.
  • the ratio of the total area of all the extraction holes to the total area of the grinding disk determines on the one hand the effect of the extraction and on the other hand the stability of the grinding disk.
  • This ratio advantageously lies in the range from 2% to 20%, preferably from 6% to 12%, particularly preferably from 4% to 7%.
  • the total area of the grinding disk comprises both the actual grinding area in which the grinding particles are attached and the total area of all the extraction holes. If the grinding disk has a central fastening opening, however, the surface area thereof is not included in the total area of the grinding disk. Therefore, if the grinding disk has a diameter D and has a central, circular fastening opening with a diameter b, the total area of the grinding disk is by definition calculated by
  • At least 80%, preferably at least 90%, particularly preferably all, of the extraction holes are circular and have a diameter which lies in the range from 3 mm to 6 mm, preferably from 3.5 mm to 4.5 mm, particularly preferably from 4 mm to mm. With such diameters, it has been possible to achieve particularly good extraction.
  • the center points of at least 8 extraction holes are arranged on each circle of holes.
  • the extraction holes are arranged uniformly in the circumferential direction. If a circle of holes comprises 8 extraction holes, for example, two extraction holes that are arranged on the circle of holes and adjacent to one another in the circumferential direction are arranged at an angular distance of 45° from one another.
  • the arrangement of the extraction holes is not substantially translationally symmetrical.
  • An arrangement is referred to as translationally symmetrical here if it is invariant under linear translation.
  • the word “substantially” means here that, on account of the finite number of extraction holes in the peripheral regions of the grinding disk, the arrangement is not completely invariant under such a translation.
  • Substantially translationally symmetrical arrangements of the extraction holes are, for example, the arrangement at the corner points of a square grid (as in EP 781 629 A1) or at the corner points of a triangular grid (as in WO 2008/042775 A1).
  • the grinding disk may comprise any substrate known per se, for example paper or vulcan fiber.
  • the extraction holes may be produced, for example, by punching into the substrates.
  • the abrasive particles may be any known per se, for example alumina, silicon carbide or silicon nitride.
  • the abrasive particles may have customary particle sizes, for example P80, P180, P240 or P400.
  • the abrasive particles may be fixed on the substrate by a binder that is likewise known per se.
  • the grinding disk may have on its rear side (i.e. on the side facing away from the abrasive particles) further fastening means for fastening to a grinding pad.
  • these may be loops and/or hooks of a loop-hook fastening, that is to say a Velcro fastening.
  • the fastening means are formed by a coating with a pressure-sensitive adhesive.
  • FIG. 1 shows a first exemplary embodiment of a grinding disk according to the invention, with 56 extraction holes with a diameter of 4 mm;
  • FIG. 2 shows a second exemplary embodiment of a grinding disk according to the invention, with 56 extraction holes with a diameter of 4.5 mm;
  • FIG. 3 shows a third exemplary embodiment of a grinding disk according to the invention, with 56 extraction holes with a diameter of 5 mm;
  • FIG. 4 shows a fourth exemplary embodiment of a grinding disk according to the invention, with 40 extraction holes with a diameter of 4.5 mm;
  • FIG. 5 shows a fifth exemplary embodiment of a grinding disk according to the invention, with 64 extraction holes with a diameter of 4 mm;
  • FIG. 6 shows a sixth exemplary embodiment of a grinding disk according to the invention, with 64 extraction holes with a diameter of 4.5 mm.
  • the grinding disk 1 contains an imaginary center point M, which represents the geometrical center point of the circular outer circumference 4 of the grinding disk 1 .
  • n L 56 circular extraction holes 2 with a diameter of 4 mm.
  • the extraction holes 2 are respectively arranged uniformly in the circumferential direction: the extraction holes 2 on the circles of holes K 1 , K 2 and K 4 are therefore arranged at an angular distance of 45° from one another, while the extraction holes 2 on the circles of holes K 3 and K 5 are arranged at an angular distance of 22.5° from one another.
  • the eight radial lines S 2 , S 8 , S 8 , S 11 , S 14 , S 17 , S 20 and S 23 respectively comprise only the center point of a single extraction hole 2 .
  • These radial lines are therefore referred to as single-hole radial lines.
  • the altogether 8 extraction holes 2 on the single-hole radial lines all lie on the same circle of holes K 4 and are consequently all at the same distance from the center point M of the grinding disk 1 .
  • the circle of holes K 4 is therefore referred to as a single-hole circle.
  • the three circles of holes K 1 , K 2 and K 3 therefore have smaller radii than the single-hole circle K 4 .
  • each radial line S 1 , . . . , S 24 comprises the center point of an extraction hole 2 on at least one radius on which the two radial lines that are adjacent to this radial line in the circumferential direction have no center point of an extraction hole 2 .
  • the radial line S 1 on the radius r 2 comprises the center point of an extraction hole 2 , which therefore lies on the circle of holes K 2 .
  • the radial lines S 2 and S 24 that are adjacent in the circumferential direction do not comprise an extraction hole 2 at this distance r 2 .
  • the radial line S 2 comprises the center point of an extraction hole 2 on the radius r 4 , but the radial lines that are adjacent in the circumferential direction, S 1 and S 3 , do not. This has the effect that the extraction holes 2 are angularly offset in relation to one another. In this way, on the one hand the extraction holes 2 are arranged relatively uniformly and make relatively uniform extraction possible. On the other hand, the distances between the extraction holes 2 are great enough to prevent tearing or breaking of the areas between adjacent extraction holes 2 .
  • the grinding disk 1 comprises precisely three radial line types T 1 , T 2 and T 3 :
  • the radial line type T 4 comprises only a single extraction hole 2 , on the radius r 4 , and therefore forms a single-hole radial line.
  • the radial line type T 2 comprises an extraction hole 2 on the radii r 2 , r 3 and r 5
  • the radial line type T 3 comprises an extraction hole 2 on the radii r 1 , r 3 and r 5 .
  • Each of the radial lines S 1 , S 2 , . . . and each of the radial line types T 1 , T 2 , T 3 therefore respectively comprises either precisely one or precisely three center points of extraction holes 2 .
  • the radial line types are arranged in the circumferential direction U in the sequence T 2 , T 1 , T 3 , this sequence being repeated eight times over the entire angular range of 360°.
  • the angle between T 2 and T 1 and between T 2 and T 1 is 11.25°, while that between T 1 and T 3 is in each case 22.5°.
  • the arrangement of the extraction holes 2 is invariant under rotation about the center point M by 45°, therefore has an eightfold symmetry.
  • the grinding disk 1 represented in FIG. 1 has a total area
  • Each of the extraction holes 2 has an area of
  • the average distance between two adjacent circles of holes in FIG. 1 is 10.375 mm.
  • the average absolute deviation of this average distance is 1.0625 mm. Consequently, the average absolute deviation is approximately 10% of the average radial distance.
  • the fourth exemplary embodiment, presented in FIG. 4 is a further modification of that represented in FIG. 2 .
  • the grinding disk 1 shown in FIG. 4 does not comprise a fifth circle of holes.
  • FIGS. 5 and 6 show further exemplary embodiments, with in each case 6 circles of holes K 1 , . . . , K 6 and associated radii r 4 , . . . , r 6 .
  • the radial line type T 1 comprises only a single extraction hole 2 , on the radius r 5 , and therefore forms a single-hole radial line.
  • the radial line type T 2 comprises an extraction hole 2 on the radii r 2 , r 4 and r 6
  • the radial line type T 3 comprises an extraction hole 2 on the radii r 4 , r 2 , r 4 and r 6
  • Each of the radial lines S 1 , S 2 , . . . or each of the radial line types T 1 , T 2 , T 3 therefore comprises either precisely one, precisely three or precisely four center points of extraction holes 2 .
  • the radial line types are arranged in the circumferential direction U in the sequence T 2 , T 1 , T 3 , this sequence being repeated eight times over the entire angular range of 360°.
  • the angle between T 2 and T 4 and between T 2 and T 4 is 11.25°, while that between T 4 and T 3 is in each case 22.5°.
  • the arrangement of the extraction holes 2 is invariant under rotation about the center point M by 45°, therefore has an eightfold symmetry.
  • FIG. 1 FIG. 2 FIG. 3 FIG. 4 FIG. 5 FIG. 6
  • Diameter d of 4 4.5 5 4.5 4 4.5 the extraction holes 2 in mm Diameter of the 16 16 16 12 16 16 16 central fastening opening 3 in mm Number n L , of 56 56 56 40 64 64 extraction holes 2 Number n K of 5 5 5 4 6 6 circles of holes Radii r 1 , r 2 , . . .
  • the grinding disks according to the invention allow grinding dust to be transported away efficiently. As a result, the service life of the grinding disk can be extended significantly, so that the grinding disks are consumed less quickly and therefore have to be changed less frequently.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
US13/822,752 2010-09-13 2011-08-04 Grinding wheel Abandoned US20130344783A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202010012502U DE202010012502U1 (de) 2010-09-13 2010-09-13 Schleifscheibe
DE202010012502.2 2010-09-13
PCT/EP2011/063468 WO2012034785A1 (fr) 2010-09-13 2011-08-04 Meule

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US20130344783A1 true US20130344783A1 (en) 2013-12-26

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US13/822,752 Abandoned US20130344783A1 (en) 2010-09-13 2011-08-04 Grinding wheel

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US (1) US20130344783A1 (fr)
EP (1) EP2616217A1 (fr)
DE (1) DE202010012502U1 (fr)
WO (1) WO2012034785A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160144484A1 (en) * 2013-07-02 2016-05-26 3M Innovative Properties Company Abrasive article and adapter therefore
US20160151887A1 (en) * 2013-06-28 2016-06-02 Robert Bosch Gmbh Holding Device for a Grinding Means
US10046439B2 (en) 2013-11-11 2018-08-14 Dipl.-Ing. Guenter Wendt Gmbh Vulcanized fiber grinding tool

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013017962A1 (de) * 2013-11-11 2015-05-13 Dipl.-Ing. Günter Wendt GmbH Verbessertes Vulkanfiber-Schleifwerkzeug
CN106670973B (zh) * 2017-02-22 2019-01-18 天润曲轴股份有限公司 磨床冷却排屑装置
DE102018131590A1 (de) * 2018-12-10 2020-06-10 Dongguan Golden Sun Abrasives Co., Ltd. Scheibenschleifpapier und Schleifgerät
IT201900001286U1 (it) * 2019-04-15 2020-10-15 Alesia Inc S R L Dispositivo abrasivo di forma circolare

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749681A (en) * 1952-12-31 1956-06-12 Stephen U Sohne A Grinding disc
US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc
US5807161A (en) * 1996-03-15 1998-09-15 Minnesota Mining And Manufacturing Company Reversible back-up pad
US5911620A (en) * 1997-02-25 1999-06-15 Hilti Aktiengesellschaft Pot-shaped grinding wheel
US5989112A (en) * 1998-05-11 1999-11-23 Norton Company Universal abrasive disc
US20050095957A1 (en) * 2003-10-29 2005-05-05 International Business Machines Corporation Two-sided chemical mechanical polishing pad for semiconductor processing
US20070028526A1 (en) * 2005-08-05 2007-02-08 3M Innovative Properties Company Abrasive article and methods of making same
US20090233527A1 (en) * 2007-12-31 2009-09-17 Sait-Gobain Abrasives, Inc. Interface pad for use between an abrasive article and a support tool
USD645065S1 (en) * 2008-05-22 2011-09-13 3M Innovative Properties Company Abrasive article with holes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1390205A (fr) * 1963-06-04 1965-02-26 Zane & C Snc Disque abrasif flexible, procédé pour sa fabrication et moyens pour réaliser ce procédé
DE29520566U1 (de) 1995-12-29 1996-02-22 Jöst, Peter, 69518 Abtsteinach Direkt oder indirekt mit einer Maschine oder einem manuell betreibbaren Schleifmittelhalter adaptierbarer Schleifkörper sowie ein hierfür geeigneter Adapter
US6796889B2 (en) * 2001-11-13 2004-09-28 Miksa Marton Orbital sander with suction ring
JP2008087082A (ja) 2006-09-29 2008-04-17 Three M Innovative Properties Co 吸塵用研磨具
DE202007004949U1 (de) 2007-04-02 2007-06-06 Ufi Schleiftechnik Gmbh & Co. Kg Schleifsystem

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749681A (en) * 1952-12-31 1956-06-12 Stephen U Sohne A Grinding disc
US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc
US5807161A (en) * 1996-03-15 1998-09-15 Minnesota Mining And Manufacturing Company Reversible back-up pad
US5911620A (en) * 1997-02-25 1999-06-15 Hilti Aktiengesellschaft Pot-shaped grinding wheel
US5989112A (en) * 1998-05-11 1999-11-23 Norton Company Universal abrasive disc
US20050095957A1 (en) * 2003-10-29 2005-05-05 International Business Machines Corporation Two-sided chemical mechanical polishing pad for semiconductor processing
US20070028526A1 (en) * 2005-08-05 2007-02-08 3M Innovative Properties Company Abrasive article and methods of making same
US20090233527A1 (en) * 2007-12-31 2009-09-17 Sait-Gobain Abrasives, Inc. Interface pad for use between an abrasive article and a support tool
US8444454B2 (en) * 2007-12-31 2013-05-21 Saint-Gobain Abrasives, Inc. Interface pad for use between an abrasive article and a support tool
USD645065S1 (en) * 2008-05-22 2011-09-13 3M Innovative Properties Company Abrasive article with holes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160151887A1 (en) * 2013-06-28 2016-06-02 Robert Bosch Gmbh Holding Device for a Grinding Means
US10105822B2 (en) * 2013-06-28 2018-10-23 Robert Bosch Gmbh Holding device for a grinding means
US20160144484A1 (en) * 2013-07-02 2016-05-26 3M Innovative Properties Company Abrasive article and adapter therefore
US10046439B2 (en) 2013-11-11 2018-08-14 Dipl.-Ing. Guenter Wendt Gmbh Vulcanized fiber grinding tool

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DE202010012502U1 (de) 2010-11-18
WO2012034785A1 (fr) 2012-03-22
EP2616217A1 (fr) 2013-07-24

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