EP3804907B1 - Procédé de fabrication d'une unité abrasive - Google Patents

Procédé de fabrication d'une unité abrasive Download PDF

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Publication number
EP3804907B1
EP3804907B1 EP20200767.0A EP20200767A EP3804907B1 EP 3804907 B1 EP3804907 B1 EP 3804907B1 EP 20200767 A EP20200767 A EP 20200767A EP 3804907 B1 EP3804907 B1 EP 3804907B1
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EP
European Patent Office
Prior art keywords
abrasive
recesses
carrier
material carrier
unit
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Active
Application number
EP20200767.0A
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German (de)
English (en)
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EP3804907C0 (fr
EP3804907A1 (fr
Inventor
Robert Füllmann
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Schmitz Metallographie GmbH
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Schmitz Metallographie GmbH
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Publication of EP3804907A1 publication Critical patent/EP3804907A1/fr
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Publication of EP3804907C0 publication Critical patent/EP3804907C0/fr
Publication of EP3804907B1 publication Critical patent/EP3804907B1/fr
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Classifications

    • 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
    • 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
    • B24D11/04—Zonally-graded surfaces
    • 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

Definitions

  • the invention relates to a method for producing an abrasive unit for grinding, polishing and/or lapping, an abrasive unit for grinding, polishing and/or lapping and a processing machine for grinding, polishing and/or lapping.
  • Abrasive units are basically known and can be provided, for example, as grinding, polishing or lapping disks.
  • Grinding wheels typically include a hard abrasive material for removing material from a workpiece. This hard abrasive material is usually coupled with a binder that holds the hard abrasive material in one position. Polishing and lapping disks are usually designed accordingly.
  • a screen printing process is usually used to produce grinding, polishing or lapping wheels.
  • three-dimensional screen printing processes are also used to produce such grinding and polishing disks.
  • a screen printing stencil is placed on a carrier plate and a mixture of the abrasive material and the binding material is inserted into openings in the screen printing stencil. The screen printing stencil is then removed again. This process can also be carried out by placing the screen printing stencil on a polishing cloth which is arranged on a support plate.
  • Such a process and the abrasive unit produced with it are, for example, from DE 10 2015 216538 B3 known.
  • the object is achieved by a method according to claim 1 for producing an abrasive unit for grinding, polishing and / or lapping, comprising the steps: introducing a plurality of recesses into a material carrier, the recesses having opening entries at least on one processing side of the material carrier, and Introducing an abrasive material into the plurality of recesses, wherein the material carrier is designed to be flexible in shape and is designed as a polyurethane cloth or as a plastic film and / or a hard paper.
  • the invention is based on the knowledge that the production of abrasive units without screen printing offers a variety of advantages.
  • the method according to the first aspect can be used to produce higher quality abrasive units. This production also requires less effort.
  • the large number of recesses are made in the material carrier.
  • the material carrier comprises a processing side and the recesses have passage axes that are aligned essentially parallel to an orthogonal of the processing surface.
  • the recesses are in particular arranged and designed in such a way that an abrasive material can be introduced into them.
  • the interior of the recesses is accessible at least from the processing side, in particular through the opening entries.
  • the abrasive material is introduced into the large number of recesses.
  • the abrasive material is introduced into one, two, several or all of the recesses.
  • the introduction of the abrasive material into the large number of recesses can, for example, be done in such a way that Abrasive material is applied to the processing side of the material carrier and spread. Spreading can be done, for example, with a spatula. Such an application is also known as squeegeeing.
  • the excess abrasive material on the processing side is then removed again, so that the abrasive material is essentially arranged in the recesses.
  • the abrasive material is designed in particular to machine a workpiece, in particular by machining with an indeterminate cutting edge.
  • the abrasive material preferably comprises abrasive elements and a binding material.
  • the binding material is preferably arranged and designed to hold the abrasive elements in one position.
  • the abrasive elements are in particular arranged and designed to bring about a cutting effect on a workpiece.
  • the material carrier is designed to be flexible in shape and is preferably designed as a polishing cloth and/or as a polyurethane cloth. Furthermore, it may be preferred that the material carrier is or comprises a cloth-like textile product which comprises synthetic and/or natural fibers.
  • the fibers are preferably processed into woven fabrics, nonwovens and/or felt materials, with the fibers also preferably being present as laminates and/or composites.
  • a material carrier designed to be flexible in shape can be reversibly changed in shape, with the structure of the material carrier remaining essentially unchanged.
  • the material carrier is in particular designed in such a way that it is subject to abrasion in a grinding, polishing and/or lapping process.
  • the person skilled in the art understands in particular that the material carrier has greater abrasion than the abrasive material.
  • the material carrier, which is designed to be flexible in shape can preferably be designed as a polishing cloth.
  • the material carrier, which is designed to be flexible in shape is designed as a polyurethane cloth.
  • the material carrier can also be designed as a cloth-like textile product.
  • the cloth-like textile product includes synthetic and/or natural fibers. These fibers can be used as fabric, Nonwovens and/or felt materials can be processed. In addition, the fibers can also be present as laminates and/or as composites.
  • Synthetic fibers are also known as synthetic fibers.
  • the natural fibers can be, for example, or include cotton fibers.
  • the material carrier is designed as a plastic film and/or as a hard paper or includes this.
  • the material carrier can have or consist of a foamed material and/or a non-metallic material, the foamed material preferably being a polyurethane foam.
  • the recesses can advantageously be introduced into a material carrier designed as a plastic film or a hard paper.
  • the recesses can also be advantageously introduced into a material carrier that consists of or includes polyurethane foam.
  • the polyurethane foam also has micropores that enable uniform abrasion and thus wear on the material carrier when machining a workpiece.
  • the material carrier has a material carrier thickness of less than 5 mm, in particular less than 3 mm, preferably less than 1.5 mm.
  • the material carrier thickness is to be understood in particular as the thickness of the material carrier.
  • the material carrier thickness preferably extends in a direction that is parallel to a surface orthogonal of the processing side of the material carrier.
  • the material carrier is hydrophilic.
  • a hydrophilic material carrier has the advantage that it can absorb at least a small amount of a liquid, in particular water. Since liquids are regularly used in grinding and polishing processes, the abrasive unit can absorb part of the liquid, in particular the water.
  • this comprises the step: arranging the material carrier with a fastening side arranged opposite the processing side on a carrier plate, the carrier plate being designed to act as a coupling element between the abrasive unit and a processing machine.
  • the carrier plate preferably has a geometry that is essentially the same as the material carrier.
  • the carrier plate can be made of metal or plastic, for example, or can include metal or plastic.
  • the carrier plate preferably comprises one, two or more cantilever sections.
  • the cantilever sections can, for example, have a radius that is smaller than the radius of the carrier plate.
  • the cantilever sections preferably protrude in such a way that they can be used to dismantle the abrasive unit from a processing machine.
  • a substantially abrasive material-impermeable intermediate element in particular a plastic film, and/or a fastening element, in particular an adhesive film, is/are arranged on the fastening side of the material carrier, wherein preferably the intermediate element and/or the Fastening element is arranged between the material carrier and the carrier plate.
  • the intermediate element is arranged and designed in such a way that it extends essentially completely between the material carrier and the carrier plate.
  • the abrasive material-impermeable intermediate element prevents abrasive material from getting out of the recesses into the space between the material carrier and the carrier plate.
  • the recesses can also extend through the intermediate element and/or the fastening element.
  • the fastening element can be arranged between the material carrier and the carrier plate.
  • the fastening element can, for example, be designed as a double-sided adhesive film that adheres to the material carrier and to the carrier plate. This enables a connection between the material carrier and the carrier plate.
  • the abrasive material-impermeable intermediate element and the fastening element can also be formed as a single element.
  • the recesses are punched and/or grooved.
  • the recesses produced by a punching process and/or by a grooving process can advantageously be produced and then filled with the abrasive material
  • the recesses are designed as blind holes and/or through holes.
  • a blind hole has the advantage that the abrasive material generally cannot emerge on a side opposite the processing side.
  • the recesses designed as through holes have the advantage of being easier to manufacture.
  • a protective element in particular a protective film, is arranged on the processing side, and the recesses are introduced through the protective element into the material carrier, preferably the protective element is removed after introducing the abrasive material.
  • the protective element When introducing the abrasive material, the protective element makes it possible for it to be introduced into the plurality of recesses and essentially not onto the processing side of the material carrier. This avoids the need for a further manufacturing step after the abrasive material has been introduced into the recesses, namely the removal of the excess abrasive material from the processing side of the material carrier.
  • the protective element can, for example, be removed from the material carrier after the abrasive material has been introduced.
  • An abrasive unit is thus provided whose processing side of the material carrier is essentially free of abrasive material, so that only abrasive material is arranged in the recesses and, if necessary, protruding slightly upwards from the recesses.
  • the abrasive material is introduced in such a way that the abrasive material essentially ends with the processing side and preferably the abrasive material forms a substantially flat surface with the processing side.
  • excess abrasive material can be removed after the abrasive material has been introduced into the plurality of recesses. For example, this removal can also take place during the scraping or filling of the recesses.
  • a substantially flat surface also means that the abrasive material protrudes slightly from the recesses. For example, this can be the case if a protective element is arranged on the processing side and is removed again after the abrasive material has been introduced. In this case, the abrasive material can, for example, protrude beyond the processing side with the thickness of the protective element.
  • an abrasive unit for grinding, polishing and/or lapping, comprising a material carrier with a plurality of recesses, the recesses having opening entrances at least on one processing side of the material carrier, and wherein an abrasive material is in the recesses is arranged, characterized in that the material carrier is designed to be flexible in shape and is designed as a polishing cloth and/or as a polyurethane cloth or is designed as a plastic film and/or hard paper.
  • the abrasive material is arranged in the recesses in such a way that the abrasive material forms a substantially flat surface with the processing side.
  • a substantially flat surface lies also occurs when the abrasive material protrudes from one of the recesses with a projection height, the projection height being less than 20%, less than 10%, less than 5% or less than 2% of a recess depth.
  • the recess depth is either the distance between the processing side and a recess base, the distance between the processing side and the fastening side or the material thickness of the material carrier.
  • the material carrier is a cloth-like textile product which comprises synthetic and/or natural fibers, the fibers preferably being processed into woven fabrics, nonwovens and/or felt materials, the fibers also preferably being used as laminates and / or composites are present.
  • the material carrier can have a non-metallic material or consist of this or these.
  • the material carrier has a material carrier thickness of less than 5 mm, in particular less than 3 mm, preferably less than 1.5 mm, and/or is designed to be hydrophilic.
  • the abrasive material comprises or consists of abrasive elements and/or a binding material, the abrasive elements preferably being selected from the group consisting of: diamond, alumina, silicon carbide, boron carbide, and/or or cerium oxide, and/or the binding material is a one- or multi-component synthetic resin, preferably Epoxy resin, and / or a UV-curing synthetic resin includes or consists of this.
  • the abrasive elements of the abrasive material are in particular arranged and designed to remove material from a workpiece.
  • the binding material holds the abrasive elements in one position.
  • one, two, several or all of the recesses have a round, oval, triangular, polygonal, in particular hexagonal, and/or groove-shaped cross section and/or are designed as a spiral slot.
  • one, two, several or all of the recesses have a recess extension that is between 1 mm and 20 mm, preferably between 5 mm to 15 mm, in particular between 8 mm to 12 mm. In the case of a circular recess, the reces extension corresponds in particular to the diameter.
  • the material carrier has an edge region, the edge region adjoining an outer edge of the material carrier and extending in the direction of a center point of the material carrier with an edge region extension of up to 20 mm, preferably up to 10 mm , wherein the edge region is essentially designed to be free of recesses.
  • a first processing section adjoins the edge region and a second processing section having the center point adjoins the first processing section, wherein the recess extension of the recesses in the first processing section is smaller than the recess extension of the recesses in the second processing section, and / or a second Spacing between two recesses in the second processing section is smaller than a first spacing between two recesses in the first processing section.
  • the material carrier can include a central recess having the center point.
  • the wear in the second processing section is often greater than in the first processing section. Through This greater wear can be counteracted by a larger recess extension of the recesses in the second processing section and/or by a smaller spacing of the recesses in the second processing section. A substantially constant removal rate can therefore be achieved with the abrasive unit.
  • the wear in the first processing section may also be greater under certain circumstances. This greater wear can be countered with larger recesses in the first processing section.
  • the central recess is in particular arranged and designed to arrange the abrasive unit on a processing machine.
  • the central recess can be used for positioning.
  • At least two recesses are arranged such that they are spaced apart from one another by less than 10 mm, preferably less than 8 mm, in particular less than 5 mm.
  • at least two recesses can be arranged such that they are spaced apart from one another by more than 1 mm, in particular more than 4 mm.
  • a protective element in particular a protective film, is arranged on the processing side in such a way that essentially no abrasive material can flow between the processing side of the material carrier and the protective element. With the protective element it can be avoided that there is abrasive material next to the recesses.
  • the abrasive unit comprises a carrier plate which is designed to act as a coupling element between the abrasive unit and a processing machine, wherein the material carrier is arranged on the carrier plate with a fastening side arranged opposite the processing side.
  • a further preferred development of the abrasive unit is characterized in that the fastening side of the material carrier has a substantially abrasive material-impermeable intermediate element, in particular a plastic film, and/or a fastening element, in particular an adhesive film, wherein preferably the intermediate element and/or the fastening element between the material carrier and the carrier plate is arranged.
  • the recesses can also extend through the intermediate element and/or the fastening element.
  • the task mentioned at the outset is achieved by a processing machine for grinding, polishing and/or lapping workpieces, comprising an abrasive unit according to one of the embodiment variants described above.
  • the method and its possible developments have features or process steps that make them particularly suitable for being used for an abrasive unit and a processing machine and the respective developments.
  • design variants and design details of the other aspects and their possible developments reference is also made to the previous description of the corresponding features and developments of the method for producing an abrasive unit.
  • Abrasive unit shown includes the material carrier 100.
  • the material carrier 100 includes a plurality of recesses 104, 106, 108, 110, 112 and further recesses.
  • Figure 1 are the recesses 104, 106, 108, 110, 112 with the abrasive material 118 and in Figure 2 shown without the abrasive material 118.
  • the recesses 104 - 112 can have different cross-sectional geometries.
  • the recess 104 has a round cross-section
  • the recess 106 has an oval cross-section
  • the recess 108 has a honeycomb-shaped, hexagonal cross-section
  • the recess 110 has a triangular cross-section
  • the recess 112 has a diamond-shaped cross-section.
  • the material carrier 100 is designed as a shape-flexible body.
  • the material carrier 100 is designed as a polishing cloth.
  • the polishing cloth can, for example, consist of polyurethane or polyurethane include.
  • the material carrier 100 also has a circular geometry.
  • the ones in the Figures 1 and 2 The side of the material carrier 100 shown is the processing side 102. When the abrasive unit 1 is in normal operation, the processing side 102 faces the workpiece to be processed.
  • the one opposite the processing side 102, in Figure 4 and 5 Fastening side 103 shown faces away from the workpiece to be machined during normal operation.
  • the recesses 104 - 112 are provided at least as a blind hole with a one-sided opening entry, the opening being provided at least on the processing side 102. This means in particular that in the manufacturing process the abrasive material 118, which in Figure 1 is shown in black, can be introduced into the recesses 104 - 112 starting from the processing side 102.
  • the modification of the abrasive unit 1' shown has an edge region 120, a first processing section 122 and a second processing section 124.
  • the edge region 120 borders on an outer edge of the material carrier 100'. With a radially oriented edge region extension, the edge region extends in the direction of the center 113.
  • the edge region 120 is designed to be essentially free of recesses.
  • the first processing section 122 is located radially inwardly adjacent to the edge region 120.
  • the first processing section 122 has a sixth recess 116 and a plurality of further recesses which are designed analogously to the sixth recess 116.
  • the second processing section 124 adjoins the first processing section 122 radially on the inside.
  • the second processing section 124 has the first type of recess 104 already described above.
  • the recesses of the first processing section 122 and the second processing section 124 differ in particular in terms of size, since the recesses of the first processing section 122 are smaller are. These smaller recesses in the first processing section 122 take into account that less wear occurs in this radially outer section of the material carrier 100 'during the processing process.
  • Figure 4 shows a sectional view of the in Figure 1 and 2 Abrasive unit 1 shown.
  • the material carrier 100 extends in the direction of its material thickness from the processing side 102 towards the fastening side 103.
  • the material carrier 100 On the processing side 102, the material carrier 100 has opening entries of a large number of recesses 104.
  • the recesses 104 are designed as blind holes. This means in particular that these are not designed as through openings and do not extend to the fastening side 103.
  • An intermediate element 130 is arranged on the fastening side 103.
  • the intermediate element 130 is preferably arranged between the abrasive unit 1 and a processing machine 200 during operation of the abrasive unit 1.
  • the intermediate element 130 can, for example, have an adhesive effect in order to attach the abrasive unit 1 to the processing machine 200.
  • the recesses are designed as through holes, so that they extend from the processing side 102 towards the fastening side 103. So that the abrasive material arranged in the recesses 104 cannot run out on the fastening side, the intermediate element 130 is arranged here in the form of an intermediate element impermeable to abrasive material.
  • the intermediate element 130 can also be designed as a fastening element, in particular as an adhesive film.
  • the material carrier 100 is arranged on a carrier plate 140.
  • the carrier plate 140 can also be generally referred to as a carrier element.
  • the material carrier 100 can be coupled to a processing machine 200 by means of the carrier plate 140.
  • a protective element 132 is arranged on the processing side 102.
  • the protective element 132 has preferably been arranged on the material carrier 100 before the recesses 104 are introduced.
  • the protective element 132 covers the Essentially the editing page 102 is complete. Because of this, essentially no abrasive material 118 can reach the processing side. After the abrasive material has been introduced into the recesses 104, the protective element 132 can be removed. As a result, the processing side 102 is essentially free of abrasive material.
  • Figure 6 shows another possible geometry of a recess 150.
  • the recess 150 is designed as a spiral-shaped groove or a spiral-shaped slot.
  • FIG. 7 shows schematically a processing machine 200, which is coupled to the abrasive unit 1, 1 '.
  • This coupling is preferably such that the processing machine 200 can set the abrasive unit 1, 1' into a rotational movement, so that a workpiece can be processed using the abrasive unit 1, 1'.
  • Figure 8 shows a schematic method for producing an abrasive unit 1, 1 'for grinding, polishing and / or lapping.
  • step 300 a plurality of recesses 104 to 112 are introduced into a material carrier 100, 100'.
  • the recesses 104 to 112 have opening entries at least on one processing side 102 of the material carrier 100, 100'.
  • step 302 an abrasive material is introduced into the plurality of recesses 104 to 112.
  • step 304 the material carrier 100, 100 'is arranged on a carrier plate 140 with a fastening side 103 opposite the processing side 102.
  • the carrier plate 140 acts as a coupling element between the abrasive unit 1, 1 'and a processing machine 200.
  • a protective element 132 in particular a protective film, is arranged on the processing side 102.
  • the recesses 104 to 112 are introduced into the material carrier 100 through the protective element, in particular before the abrasive material is introduced into the recesses 104 to 112.
  • steps 300-306 described above is basically arbitrary. In a preferred embodiment variant of the method it is provided that step 306 is carried out before step 300.
  • the abrasive unit 1, 1' described above and the method described above enable a more cost-effective production of an abrasive unit, with better quality also being achieved.
  • no screen printing process is required to produce the abrasive unit 1,1'. This means that the use of a screen printing stencil is not necessary. This reduces the effort involved in producing the abrasive unit 1, 1'.

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

Claims (15)

  1. Procédé de fabrication d'une unité abrasive (1, 1') pour le meulage, le polissage et/ou le rodage, comprenant les étapes suivantes
    - introduire une pluralité d'évidements (104, 106, 108, 110, 112, 116, 150) dans un support de matériau (100), les évidements (104, 106, 108, 110, 112, 116, 150) ayant des entrées d'ouverture sur au moins un côté de traitement (102) du support de matériau (100) ; et
    - introduire un matériau abrasif (118) dans la pluralité d'évidements (104, 106, 108, 110, 112, 116, 150),
    - dans lequel le support de matériau est configuré pour être de forme flexible et est configuré comme un tissu en polyuréthane ou comme un film plastique et/ou un papier dur.
  2. Procédé selon la revendication 1, dans lequel le support de matériau (100)
    - est configuré comme un drap de polissage, et/ou
    - est un produit textile configuré comme un chiffon, comprenant des fibres synthétiques et/ou naturelles, de préférence les fibres étant transformées en tissus, en tissus non tissés et/ou en tissus de feutre, de préférence encore les fibres étant présentes sous forme de stratifiés et/ou de composites, et/ou
    - comprend un film plastique et/ou un papier rigide, et/ou
    - comprenant ou consistant en un matériau alvéolaire et/ou un matériau non métallique, le matériau alvéolaire étant de préférence une mousse de polyuréthane.
  3. Procédé selon l'une quelconque des revendications précédentes, comprenant l'étape :
    - disposer le support de matériau (100) avec un côté de fixation (103) disposé à l'opposé du côté de traitement (102) sur une plaque de support (140), la plaque de support (140) étant configurée pour servir d'élément de couplage entre l'unité abrasive (1, 1') et une machine de traitement.
  4. Procédé selon la revendication 3, dans lequel un élément intermédiaire (130) imperméable aux matériaux sensiblement abrasifs, en particulier un film plastique, et/ou un élément de fixation, en particulier un film adhésif, est/sont disposé(s) sur le côté de fixation (103) du support de matériau (100), de préférence l'élément intermédiaire et/ou l'élément de fixation étant disposé(s) entre le support de matériau (100) et la plaque de support (140).
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel, avant l'introduction des évidements (104, 106, 108, 110, 112, 116, 150) et du matériau abrasif (118), un élément de protection (132), en particulier un film de protection, est disposé sur la face de traitement (102) et les évidements (104, 106, 108, 110, 112, 116, 150) sont introduits à travers l'élément de protection (132) dans le support de matériau (100), l'élément de protection (132) étant de préférence retiré après l'introduction du matériau abrasif (118).
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel le matériau abrasif (118) est introduit de manière à ce que le matériau abrasif (118) affleure sensiblement la face de traitement (102) et, de préférence, le matériau abrasif (118) forme une surface sensiblement plane avec la face de traitement (102).
  7. Unité abrasive (1, 1') pour le meulage, le polissage et/ou le rodage, comprenant
    - un support de matériau (100) avec plusieurs évidements (104, 106, 108, 110, 112, 116, 150), dans lequel les évidements (104, 106, 108, 110, 112, 116, 150) ont des entrées d'ouverture au moins sur un côté de traitement (102) du support de matériau (100), et
    - dans lequel un matériau abrasif (118) est disposé dans les évidements (104, 106, 108, 110, 112, 116, 150),
    - caractérisé par le fait que le support de matériau est configuré pour avoir une forme flexible et est configuré comme un drap de polissage et/ou comme un drap en polyuréthane, ou est configuré comme un film plastique et/ou comme un papier dur.
  8. Unité abrasive (1, 1') selon la revendication précédente, dans laquelle le matériau abrasif (118) est disposé dans les évidements (104, 106, 108, 110, 112, 116, 150) de manière à ce que le matériau abrasif (118) forme une surface sensiblement plane avec la face de traitement (102).
  9. Unité abrasive (1, 1') selon l'une quelconque des revendications précédentes, dans laquelle le support de matériau (100) est
    - est un produit textile configuré comme un tissu comprenant des fibres synthétiques et/ou naturelles, de préférence les fibres étant transformées en tissus, en tissus non tissés et/ou en tissus de feutre, de préférence encore les fibres étant présentes sous forme de stratifiés et/ou de composites, et/ou
    - est configuré comme ou comprend un film plastique et/ou un papier rigide, et/ou
    - comprend ou consiste en un matériau non métallique, le matériau expansé étant de préférence une mousse de polyuréthane.
  10. Unité abrasive (1, 1') selon l'une quelconque des revendications précédentes,
    - dans laquelle le matériau abrasif (118) comprend ou est constitué d'éléments abrasifs et/ou d'un matériau liant, de préférence dans laquelle
    ∘ les éléments abrasifs sont choisis dans le groupe constitué de : Diamant, alumine, carbure de silicium, carbure de bore, et/ou oxyde de cérium, et/ou
    ∘ le matériau liant comprend ou consiste en une résine synthétique à un ou plusieurs composants, de préférence une résine époxy, et/ou une résine synthétique durcissant aux UV, et/ou
    - dans lequel un, deux, plusieurs ou tous les évidements (104, 106, 108, 110, 112, 116, 150)
    ∘ ont une section transversale ronde, ovale, triangulaire, polygonale, en particulier hexagonale, et/ou en forme de rainure et/ou sont configurés comme une fente en forme de spirale, et/ou
    ∘ ont une extension de cavité comprise entre 1 mm et 20 mm, de préférence entre 5 mm et 15 mm, en particulier entre 8 mm et 12 mm.
  11. Unité abrasive (1, 1') selon l'une quelconque des revendications précédentes, dans laquelle le support de matériau (100) présente une zone de bord, dans laquelle la zone de bord est adjacente à un bord extérieur du support de matériau (100) et s'étend avec une extension de zone de bord allant jusqu'à 20 mm, de préférence jusqu'à 10 mm, en direction d'un point central du support de matériau (100),
    - dans laquelle la zone de bord est configurée de manière à être pratiquement exempte d'évidements, et/ou
    - une première section d'usinage jouxte la zone de bord et une deuxième section d'usinage ayant le point central jouxte la première section d'usinage, l'étendue des évidements (104, 106, 108, 110, 112, 116, 150) dans la première section d'usinage étant inférieure à l'étendue des évidements (104, 106, 108, 110, 112, 116, 150) dans la deuxième section d'usinage, et/ou
    - un deuxième espacement de deux évidements dans la deuxième section d'usinage est inférieur à un premier espacement de deux évidements dans la première section d'usinage,
    - comprenant une cavité centrale ayant le centre.
  12. Unité abrasive (1, 1') selon l'une quelconque des revendications précédentes, dans laquelle un élément de protection (132), en particulier une feuille de protection, est disposé sur la face de traitement (102) de telle sorte que pratiquement aucun matériau abrasif (118) ne peut s'écouler entre la face de traitement (102) du support de matériau (100) et l'élément de protection (132).
  13. Unité d'abrasion (1, 1') selon l'une quelconque des revendications précédentes, comprenant une plaque de support (140) configurée pour servir d'élément de couplage entre l'unité d'abrasion (1, 1') et une machine de traitement, dans laquelle le support de matériau (100) est disposé sur la plaque de support (140) avec un côté de fixation (103) disposé à l'opposé du côté de traitement (102).
  14. Unité abrasive (1, 1') selon la revendication 13, dans laquelle le côté de fixation (103) du support de matériau (100) comprend un élément intermédiaire (130) imperméable aux matériaux sensiblement abrasifs, en particulier un film plastique, et/ou un élément de fixation, en particulier un film adhésif, de préférence l'élément intermédiaire et/ou l'élément de fixation étant disposé entre le support de matériau (100) et la plaque de support (140).
  15. Machine d'usinage (200) pour le meulage, le polissage et/ou le rodage de pièces, comprenant une unité abrasive (1, 1') selon l'une quelconque des revendications précédentes.
EP20200767.0A 2019-10-10 2020-10-08 Procédé de fabrication d'une unité abrasive Active EP3804907B1 (fr)

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DE102021215122A1 (de) 2021-12-30 2023-07-06 Robert Bosch Gesellschaft mit beschränkter Haftung Schleifmittel
DE102022211515A1 (de) 2022-10-31 2024-05-02 Robert Bosch Gesellschaft mit beschränkter Haftung Schleifelement, Schleifmittel und Verfahren zur Herstellung des Schleifelements und/oder des Schleifmittels
DE102022211514A1 (de) 2022-10-31 2024-05-02 Robert Bosch Gesellschaft mit beschränkter Haftung Schleifelement, Schleifmittel und Verfahren zur Herstellung des Schleifelements und/oder des Schleifmittels

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DE19727104C2 (de) * 1997-06-26 2000-07-20 Ver Schmirgel & Maschf Flexibler Schleifkörper und Verfahren zu seiner Herstellung
EP1369204B1 (fr) * 2002-06-03 2006-10-11 JSR Corporation Tampon de polissage et procédé de fabrication d'un tampon de polissage
DE20305995U1 (de) * 2003-04-15 2003-07-10 Ewald Schaumstoffe Gmbh & Co K Polierscheibe
US10875145B2 (en) * 2014-10-17 2020-12-29 Applied Materials, Inc. Polishing pads produced by an additive manufacturing process
DE102015216538B3 (de) * 2015-08-28 2016-10-13 DIABÜ-Diamantwerkzeuge Heinz Büttner GmbH Verfahren zum Herstellen eines mehrdimensional skalierbaren Werkzeugs

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