EP1961519A1 - Meule - Google Patents

Meule Download PDF

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Publication number
EP1961519A1
EP1961519A1 EP07102865A EP07102865A EP1961519A1 EP 1961519 A1 EP1961519 A1 EP 1961519A1 EP 07102865 A EP07102865 A EP 07102865A EP 07102865 A EP07102865 A EP 07102865A EP 1961519 A1 EP1961519 A1 EP 1961519A1
Authority
EP
European Patent Office
Prior art keywords
abrasive
surface area
abrasive body
elevations
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.)
Withdrawn
Application number
EP07102865A
Other languages
German (de)
English (en)
Inventor
Patrick Müller
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.)
Sia Abrasives Industries AG
Original Assignee
Sia Abrasives Industries AG
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 Sia Abrasives Industries AG filed Critical Sia Abrasives Industries AG
Priority to EP07102865A priority Critical patent/EP1961519A1/fr
Priority to US12/035,713 priority patent/US20080207101A1/en
Publication of EP1961519A1 publication Critical patent/EP1961519A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/14—Zonally-graded wheels; Composite wheels comprising different abrasives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives

Definitions

  • the invention relates to an abrasive body, a system of at least two partial bodies, which can be connected to an abrasive body, a method for grinding a work surface, a method for producing an abrasive article and a method for providing an abrasive article.
  • abrasive material with various abrasive effects.
  • abrasive material with various abrasive effects.
  • an abrasive article is to be provided with which various abrasive effects can be achieved and can be changed in a simple manner between these abrasive effects.
  • the abrasive body should be simple and inexpensive and flexible as possible.
  • an abrasive body a system comprising at least two partial bodies, which can be connected to form an abrasive body, and a method for abrading a working surface having the features of the independent patent claims.
  • the inventive abrasive body has at least a first surface area and a second surface area. At least a part of the first surface area coincides with a part of an enveloping surface of the abrasive body, but at least part of the second surface area does not coincide with the enveloping surface of the abrasive body. At least a portion of the abrasive article is elastically compressible such that when the abrasive article is pressed against a substantially planar surface, at least a portion of the second surface region is brought into contact with the surface. Furthermore, at least a portion of the second surface area is provided with an abrasive material.
  • a surface area is meant here, as follows, a part of the outer surface of the abrasive article.
  • a surface area may in particular be substantially planar. Alternatively, it can be curved, that is to say have the shape of part of a spherical or cylindrical surface.
  • a surface area in turn consist of several, non-contiguous sub-areas that are flat or curved.
  • the second surface area may extend substantially parallel to the first surface area.
  • the envelope surface of the abrasive article is the entirety of all points of the surface which, in the case of the force-free contact of the abrasive article, can come into contact with an imaginary, infinitely large, flat work surface.
  • This envelope surface corresponds to the area of a cloth, which is stretched around the abrasive body.
  • According to the invention is a part the surface, which does not coincide with a part of an envelope, provided with abrasive material.
  • the elastically compressible part of the abrasive article is assignable to a portion of the first surface region.
  • this elastically compressible part is located at least partially in the vicinity of or below the part of the first surface area.
  • the elastically compressible member is compressible in a direction substantially perpendicular to the portion of the first surface region to which the elastically compressible member is assignable.
  • the abovementioned features according to the invention make it possible, when grinding a work surface, to bring the abrasive material on the partial area of the second surface area into contact with the work surface only when sufficient contact pressure is exerted. Since a part of the abrasive article is elastically compressible, the abrasive article returns to its original shape as soon as the contact force is reduced. Thus, the abrasive material of the second surface area no longer acts on the work surface as soon as the contact pressure has fallen below a certain value. In this way, it is surprisingly easy to influence the abrasive effect by adjusting the contact pressure, without having to rotate or even replace the grinding wheel.
  • the flatness of the parts of the first surface area means that, even with a low contact pressure force of the grinding wheel, a large part of the first surface area can come into contact with a flat work surface.
  • at least two of the non-contiguous subareas of the first surface area lie in one plane.
  • abrasive material can be used with an abrasive effect, such as alumina, Zirconia corundum, ceramic corundum, diamond or silicon carbide.
  • the abrasive material is attached to the person skilled in the known manner on the abrasive body. For example, it may be applied by means of a binder such as phenolic resin, melamine resin or a hot melt adhesive.
  • At least parts of the first surface area are also provided with an abrasive material.
  • these parts of the first surface area coincide with an envelope of the abrasive article.
  • part of the abrasive material can come into contact with this work surface.
  • a certain abrasive effect is already achieved without or with only low contact pressure. If the contact force is sufficiently high, in addition the abrasive material on the second surface area comes into contact with the work surface, which can lead to a strong abrasive action.
  • the abrasive materials are different from one another at the first surface area and at the second surface area.
  • the abrasive materials are also referred to here, if they only have different grain sizes, but do not differ in the base material.
  • the abrasive material on the subregion of the second surface region has a coarser abrasive action than the abrasive material on the subregion of the first surface region.
  • the grinding body can also have more than two surface areas, which are successively brought into contact with a working surface with increasing contact pressure. When several different abrasive materials are present, more than two different abrasive effects can thus also be achieved.
  • the abrasive body is formed as a sponge, pad, sheet or band.
  • Such sponges are suitable for example for pre-grinding or grinding, in particular for the removal of paint or paint from surfaces.
  • the abrasive body according to the invention can be formed substantially circular disk or cylindrical, wherein the first surface area comprises the surfaces of elevations, which protrude on the outer circumference, and the second surface area comprises recesses in the radial direction.
  • the elevations thus form the parts of the abrasive body that can be assigned to the parts of the first surface area.
  • these parts are elastically compressible in the radial direction.
  • Such an abrasive body may be formed as a grinding wheel or grinding cylinder, which is connectable to a rotating drive. At least in the recesses, the abrasive body is provided with abrasive material.
  • the construction according to the invention makes it possible to bring the abrasive material on the partial area of the second surface area into contact with the work surface during grinding on the outer circumference of the abrasive body only if at least one predetermined, minimal contact pressure force is exerted.
  • a particularly preferred embodiment provides that at least parts of the elevations have a lower compressibility than the remaining part of the abrasive article.
  • the compressibilities targeted the minimum force can be adjusted, from which the abrasive material on the portion of the second surface area gets in contact with the work surface.
  • the abrasive body comprises elastically compressible materials, such as rubber or rubber.
  • At least one of the elevations may have a bevel and / or rounding. This prevents that when rotating the grinding body striking the survey leads to a machined work surface to a troubled run or to an irregular grinding pattern.
  • the abrasive body according to the invention may be substantially circular disk-shaped and have at least one substantially circular base surface.
  • the first surface area includes the surface of at least one protrusion projecting from the base surface, and the second surface area is partially formed by the base area.
  • the elevations thus form the parts of the abrasive body that can be assigned to the parts of the first surface area.
  • the base extends substantially in a plane to which parts of the first surface area are parallel.
  • the elevations are elastically compressible perpendicular to the base.
  • the base area may be both continuous and comprise separate areas.
  • the abrasive article comprises foam, in particular an open-celled foam.
  • foam in particular an open-cell foam.
  • the abrasive body can preferably have additional suction openings in the axial direction, through which grinding dust can likewise be sucked off.
  • the abrasive body comprises elastically compressible materials, such as rubber or rubber.
  • the side of the abrasive article which faces the abrasive material side, with means for mechanically connecting the abrasive article with a drive, such as a part of a hook and loop fastener system, for. B. an array of loops and / or hooks. In this way, a quick replacement of the abrasive body is made possible.
  • the first surface area is formed by the surfaces of at least one elevation, in particular of comb teeth or cams, which are arranged on the abrasive body; the second surface area is partially formed by a base on which the at least one projection is arranged.
  • the elevations thus form the parts of the abrasive body that can be assigned to the parts of the first surface area.
  • the base extends substantially in a plane to which parts of the first surface area are parallel.
  • the elevations are elastically compressible perpendicular to the base.
  • the base area may be both continuous and comprise separate areas.
  • the grinding body has elevations on more than one side, for instance on two opposite sides. Both the shapes and dimensions of these elevations and the abrasive materials on the opposite sides can differ from each other.
  • the abrasive article comprises foam.
  • This foam may contain, for example, polyurethane, ethyl vinyl acetate (EVA) or polystyrene and may be open cell or closed cell.
  • EVA ethyl vinyl acetate
  • Such a foam is inexpensive to produce and easy to dimension and can have a wide range of arbitrarily specifiable elastic compressibility.
  • the grinding body comprises foam only in the part in which it is elastically compressible, in particular in a part of the grinding body which can be assigned to a part of the first surface area.
  • the abrasive body comprises elastically compressible materials, such as rubber or rubber.
  • the abrasive body comprises at least two partial bodies. These partial bodies can be firmly connected to one another, for example by gluing, or releasably, for instance by insertion and / or pushing. Preferably, the partial bodies are designed such that they are positively in contact with each other or can be brought into contact with each other.
  • At least part of the surface of a first part body forms part of the first surface area and at least part of the surface of a second part body forms part of the second surface area.
  • surveys, such as cams or Comb teeth formed by a part of only one of the part body. This structure enables a particularly simple production method for the inventive abrasive body (see below).
  • At least two of the partial bodies are formed from mutually different materials.
  • these materials may have different compressibilities.
  • a first part body, the surface of which forms part of the first surface area of the abrasive article may have a lower compressibility than a second part body, the surface of which forms part of the second surface area of the abrasive article.
  • the first part body is elastically compressible only in one direction.
  • Another aspect of the invention relates to a system of at least two partial bodies, of which at least one comprises a surface which is at least partially provided with an abrasive material.
  • the system is characterized in that at least two of the partial bodies are in particular detachably connectable to one another such that an abrasive body according to the invention results.
  • the partial bodies are preferably designed such that they can be brought into contact with one another in a form-fitting manner.
  • Such a system allows the user to connect two or more sub-bodies to base materials, dimensions, and abrasive materials, as appropriate, with each application.
  • Another aspect of the invention relates to a method for grinding a work surface with an abrasive article, in particular with an inventive abrasive article.
  • the method is characterized in that when pressing the abrasive body against the work surface with the second contact force, a part of the abrasive body is elastically compressed such that a part of a second surface area gets in contact with the work surface.
  • the method according to the invention enables cost-effective and simple production of an inventive abrasive article.
  • only at most one type of abrasive material is applied to each of the partial bodies.
  • adhesives such as hot melt adhesives, adhesive sheets or mechanical joints such as a hook-and-loop fastener system may be used.
  • the invention relates to a method for providing a particular inventive abrasive body.
  • the abrasive body comprises at least two partial bodies, in particular partial bodies of a system according to the invention.
  • the inventive method comprises the particular detachable connection of the body part.
  • the abrasive body comprises part body 1,2.
  • the first part body 1 is formed substantially cuboid and has on one of its surfaces 7 a plurality of non-contiguous elevations 3, which are also cuboidal. At least parts of the flat surfaces 4 of the elevations 3 may be provided with an abrasive material, such as alumina. For the purposes of the invention are thus the elevations 3 the surfaces 4 assigned.
  • a flat support surface 7 In the recesses between the elevations 3 is a flat support surface 7, which is formed parallel to the surfaces 4 of the elevations 3.
  • the second part of the body 2 is also formed substantially parallelepiped and has a plurality of holes 6, which connect two opposite sides 5,8 together.
  • One side 5 is provided with an abrasive material, which is preferably coarser than the abrasive material on the surfaces 4 of the elevations 3.
  • the dimensions of the holes 6 are matched to the dimensions of the elevations 3, that the body parts are 1.2 positively connected with each other can (cf. Fig. 2 ).
  • the thickness d of the second partial body is less than the height h of the elevations 3.
  • Both partial bodies 1, 2 are made of foam, preferably of polyurethane, ethyl vinyl acetate (EVA) or polystyrene. At least the elevations 3 of the first body part 1 are formed elastically compressible. Further preferably, the partial bodies 1, 2 are each formed in one piece and can be manufactured by means of known techniques, for example by foaming into a mold. By methods known per se, it is possible to set a wide range arbitrarily given compressibility. In particular, it is possible to give the foam an inhomogeneous compressibility during foaming, so that it has a higher compressibility, for example in the region of the elevations 3. Alternatively, the part bodies can be made by cutting or milling of a foam blank. The abrasive material, which may be about alumina, is applied by means of an adhesive to the body part 1,2, wherein about a hot melt adhesive can be used.
  • the abrasive article has dimensions such that it can be conveniently held in one hand.
  • the bases of the elevations 3 may have side lengths in the range of a few millimeters up to the entire length of the support surface 7. In particular, more than the five in Fig. 1 3 surveys shown be present.
  • the surfaces 4 may account for between 20% to 80% of the total surface area 7.
  • the height h of the elevations 3 can be between a few millimeters and a few centimeters.
  • Fig. 2 shows the composite abrasive body of Fig. 1
  • the side 8 of the second part body 2 is positively on the support surface 7.
  • the elevations 3 pierce the holes 6 in the second part of the body 2, wherein the dimensions of the holes 6 are matched to the dimensions of the elevations 3, that the side surfaces 10 of the holes 6 are positively connected to each other with the side surfaces 9 of the elevations 3.
  • the Surfaces 4 of the projections 3 project beyond the side 5 and thus form part of a first surface area, which coincides with an envelope surface of the entire grinding body.
  • the abrasive material side 5 forms part of a second surface area which does not coincide with an envelope surface of the entire abrasive article. At least the areas of the side 5 between the elevations 3 therefore do not come into contact with a substantially flat surface when the abrasive body is pressed against it with a low contact pressure. It would also be possible to provide elevations 3 on the outer edge of the page 5.
  • the two partial bodies 1, 2 are, according to one embodiment, firmly connected to one another, for example by gluing.
  • hotmelt adhesives or adhesive films can be used as adhesives.
  • a system comprising at least a first part body 1 and at least one second part body 2. It is conceivable that about the elevations 3 different first part of body 1 have different heights h and / or the surfaces 4 different first part of body 1 are provided with different abrasive materials.
  • Such a system allows the user, as needed, to select a first part body 1 and a second part body 2 and detachably connect to each other. If the requirements change, one of the partial bodies 1, 2 or both partial bodies 1, 2 can be exchanged.
  • the releasable connection can be reinforced by mechanical fastening means, such as by a Velcro system.
  • Fig. 3a and 3b illustrate on the basis of sectional drawings a method for grinding a work surface with an inventive abrasive article.
  • a first contact force of the grinding wheel to a working surface 11 advised according Fig. 3a only the surfaces 4 of the elevations 3 in contact with the working surface 11.
  • the abrasive effect can be caused solely by the base material of the first part body 1 or by an abrasive material applied thereto.
  • the in Fig. 4 illustrated abrasive body 20 is integrally formed and can be prepared by methods known per se, such as by direct foaming in a mold or by cutting or milling an already solidified foam.
  • the elevations 3 are formed here as a cam. For the purposes of the invention are thus the elevations 3 the surfaces 4 assigned. In the recesses between the elevations 3 is a base 19, which is parallel to the surfaces 4 of the elevations 3 is formed.
  • At least parts of the base 19 are provided with an abrasive material, such as alumina, which may be applied by means of an adhesive, such as a hot melt adhesive.
  • an abrasive material such as alumina
  • an adhesive such as a hot melt adhesive.
  • abrasive body 12 which is formed substantially circular disk-shaped.
  • the depressions 16 located between the elevations 14 constitute a second surface area 5. The depressions thus do not coincide with an enveloping surface of the grinding body, which corresponds to the fully circular outer circumference 13.
  • the outer surfaces 15 are optionally provided with a fine abrasive material.
  • the elevations 14 have rounded portions 17.
  • the depressions 16 are provided with a coarser abrasive material.
  • Such an abrasive article 12 is preferably made of foam such as polyurethane, ethyl vinyl acetate (EVA) or polystyrene, and may be prepared by per se known methods, such as by direct foaming into a mold or by cutting, milling or rotating an already solidified foam.
  • At least the elevations 14 are made of an elastically compressible material. In particular, the elevations 14 are elastically compressible in the radial direction.
  • FIG. 6 an inventive circular disk-shaped grinding wheel 18 is shown with elevations 3 on a circular base 19.
  • the first surface area is formed by surfaces 4 of elevations 3.
  • the second surface area 5 is formed by the base 19 and does not match an envelope surface of the abrasive article.
  • the base 19 is provided with an abrasive material.
  • the surfaces 4 are optionally provided with a finer abrasive material.
  • the back 21 of the abrasive article is provided with hooks which form part of a hook and loop fastener system. With the help of these hooks, the abrasive body is detachably connectable to a drive, not shown here, on which there are corresponding loops. Alternatively, 18 loops could be provided on the back 21 of the grinding wheel.
  • the abrasive body preferably comprises open-celled foam. In this way it is possible to suck off grinding dust by means of a suction device, not shown here, by means of a grinding device 18, which is not shown here.
  • the abrasive article according to the invention can also be designed as sandpaper or abrasive belt.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP07102865A 2007-02-22 2007-02-22 Meule Withdrawn EP1961519A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07102865A EP1961519A1 (fr) 2007-02-22 2007-02-22 Meule
US12/035,713 US20080207101A1 (en) 2007-02-22 2008-02-22 Abrasive Element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07102865A EP1961519A1 (fr) 2007-02-22 2007-02-22 Meule

Publications (1)

Publication Number Publication Date
EP1961519A1 true EP1961519A1 (fr) 2008-08-27

Family

ID=38006616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07102865A Withdrawn EP1961519A1 (fr) 2007-02-22 2007-02-22 Meule

Country Status (2)

Country Link
US (1) US20080207101A1 (fr)
EP (1) EP1961519A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014207047A1 (de) * 2014-04-11 2015-10-15 Robert Bosch Gmbh Schleifscheibe
EP3421180A1 (fr) * 2017-06-30 2019-01-02 Guido Valentini Tampon de polissage pour outil électroportatif et outil électrique équipé d'un tel tampon de polissage
CN109202695A (zh) * 2017-06-30 2019-01-15 盖多·瓦伦蒂尼 手持式动力工具的抛光垫和带有这种抛光垫的动力工具

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Publication number Priority date Publication date Assignee Title
DE202011104832U1 (de) * 2011-08-25 2011-10-31 Charlott Produkte Dr. Rauwald Gmbh Scheuerpad mit einem Kompositharz als Nutzschicht
USD850041S1 (en) * 2017-07-31 2019-05-28 3M Innovative Properties Company Scouring pad
CN114746215A (zh) * 2020-01-06 2022-07-12 圣戈班磨料磨具有限公司 磨料制品及其使用方法

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US5609517A (en) * 1995-11-20 1997-03-11 International Business Machines Corporation Composite polishing pad
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Publication number Priority date Publication date Assignee Title
US5609517A (en) * 1995-11-20 1997-03-11 International Business Machines Corporation Composite polishing pad
US6332832B1 (en) * 1999-04-19 2001-12-25 Rohm Company, Ltd. CMP polish pad and CMP processing apparatus using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014207047A1 (de) * 2014-04-11 2015-10-15 Robert Bosch Gmbh Schleifscheibe
EP3421180A1 (fr) * 2017-06-30 2019-01-02 Guido Valentini Tampon de polissage pour outil électroportatif et outil électrique équipé d'un tel tampon de polissage
CN109202695A (zh) * 2017-06-30 2019-01-15 盖多·瓦伦蒂尼 手持式动力工具的抛光垫和带有这种抛光垫的动力工具

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Publication number Publication date
US20080207101A1 (en) 2008-08-28

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