WO2018028849A1 - Roughing disc having a carrier layer - Google Patents

Roughing disc having a carrier layer Download PDF

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Publication number
WO2018028849A1
WO2018028849A1 PCT/EP2017/063090 EP2017063090W WO2018028849A1 WO 2018028849 A1 WO2018028849 A1 WO 2018028849A1 EP 2017063090 W EP2017063090 W EP 2017063090W WO 2018028849 A1 WO2018028849 A1 WO 2018028849A1
Authority
WO
WIPO (PCT)
Prior art keywords
roughing
tool
layer
mineral additive
disc according
Prior art date
Application number
PCT/EP2017/063090
Other languages
German (de)
French (fr)
Inventor
Thomas Kamps
Bernd Conradi
Original Assignee
Klingspor 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
Priority to RU2019106513A priority Critical patent/RU2766921C2/en
Priority to EP17733362.2A priority patent/EP3496897A1/en
Priority to JP2019506661A priority patent/JP2019524464A/en
Priority to CA3033406A priority patent/CA3033406A1/en
Priority to AU2017311190A priority patent/AU2017311190A1/en
Priority to CN201780062668.0A priority patent/CN109890562B/en
Application filed by Klingspor Ag filed Critical Klingspor Ag
Priority to KR1020197005123A priority patent/KR20190035767A/en
Priority to SG11201901044QA priority patent/SG11201901044QA/en
Priority to US16/323,375 priority patent/US20210323113A1/en
Priority to BR112019002336A priority patent/BR112019002336A2/en
Publication of WO2018028849A1 publication Critical patent/WO2018028849A1/en
Priority to ZA2019/00649A priority patent/ZA201900649B/en

Links

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
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/22—Lapping pads for working plane surfaces characterised by a multi-layered structure
    • 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
    • B24D11/02—Backings, e.g. foils, webs, mesh fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds
    • 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
    • B24D7/02—Wheels in one piece
    • B24D7/04—Wheels in one piece with reinforcing means

Definitions

  • the invention relates to a roughing disc.
  • Such a roughing disc is known in practice and is suitable for the rough grinding of material surfaces of various materials, i. for surface removal of material. It comprises a disk-shaped main body with a tool side turned tool side and a workpiece zuwendbaren workpiece side.
  • the main body comprises a centered through a rotary axis central recess for direct or indirect connection of a drive shaft of a tool.
  • the main body also comprises a disk-shaped carrier layer arranged on the tool side, at least one abrasive layer and a separating layer between adjacent layers.
  • Previously known roughing discs consist of several abrasive layer layers, which comprise a mixture of phenolic resin and abrasive grains, wherein the mixture may be mixed with various fillers and additives. It is also known that the layers are separated from one another by means of separating layers, so that the grinding layers and separating layers are arranged alternately along the axis of rotation.
  • grinding discs which layers of different
  • the invention has for its object to provide a roughing disc of the aforementioned type, which is characterized by an improved structure and in particular has an improved bond between adjacent layers of different materials and improved strength and / or rigidity.
  • the roughing disc according to the invention comprises a disk-shaped basic body with a tool side which can be turned over a tool and a workpiece side which can be turned towards a workpiece.
  • the main body comprises a center recess, through which a rotation axis passes, for direct or indirect connection of a drive shaft of the tool, a disc-shaped carrier layer arranged on the tool side, at least one grinding layer and a separating layer between adjacent layers. Adjacent layers in this sense are adjacent abrasive layers in an array of multiple abrasive layers and an abrasive layer and a support layer adjacent thereto.
  • the roughing disc according to the invention is characterized in particular by the fact that the carrier layer is formed from a mixture of materials which is free of abrasive additives and which comprises at least one mineral additive.
  • the carrier layer is free of abrasive additives and fulfills an exclusively supporting function.
  • the mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin.
  • the mixture of the at least one carrier layer may also comprise different additives from this group.
  • the mineral additive may have a hardness of at least 2, preferably between 7 and 9. In particular, a high strength of the roughing disc can be ensured, the greater the hardness of the additive.
  • the mineral additive has a particle size of 30 to 1000 ⁇ m, preferably 200 to 500 ⁇ m.
  • the grain of the mineral additive is coated with phenolic resin systems comprising resol / novolak mixture.
  • Resoles are fusible, soluble phenolic resins that contain reactive methylol groups and are formed in the condensation of phenols with formaldehyde under basic conditions. The benzene rings are connected to each other via methylene groups and via ether bridges.
  • Novolaks are phenolic resins with a formaldehyde-phenol ratio of less than 1: 1, which are obtained by acid condensation of the starting materials.
  • the resol has a viscosity of 1000 to 5000 mPas, preferably 1200 to 3500 mPas.
  • the novolak has a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm.
  • the novolac may also be modified novolac.
  • additional defined amounts of other additives and / or additives of less than 20% by volume may be added to the novolak.
  • FIGURE of the drawing shows a section through a roughing disc according to the invention.
  • the roughing disc 1 shown in the drawing has a disk-shaped base body 3 with a layer-like structure and an outer radius a.
  • the main body 3 has a tool side 13 which can be turned over a tool and a workpiece side 12 which can be turned over to a workpiece.
  • the main body 3 comprises a central recess 2, which is penetrated by an axis of rotation 5.
  • the axis of rotation S is located in the center of rotation of the roughing disc 1.
  • an insert 4 for fixing the roughing disc 1 is arranged on a drive shaft of a tool.
  • a carrier layer 6 is arranged at the tool facing tool side 13 of the roughing disc.
  • the carrier layer 6 comprises a mixture which mixture of abrasive additives is free and which comprises at least one mineral additive.
  • the mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin.
  • the mixture of the at least one carrier layer may also comprise different additives from this group.
  • the additive may also have a Mohs hardness of at least 2, preferably between 7 and 9.
  • the grain size of the additive may be between 30 and 1000 .mu.m, preferably between 200 and 500 .mu.m.
  • the granules of the additive may be coated with phenolic resin systems wherein the phenolic resin system may comprise a ResoWNovolak mixture.
  • the resol may have a viscosity of 1000 to 5000 mPa ⁇ s, preferably 1200 to 3500 mPa ⁇ s. sen.
  • the novolak may have a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm.
  • the novolak may comprise additional defined amounts of other additives and / or additives of less than 20% by volume.
  • the carrier layer 6 has a high strength. It may also include a net-like insert to further increase the stability of the roughing disc 1.
  • the roughing disc 1 also has two stacked in the direction of the axis 5 grinding layers 8a, 8b, which are arranged on the workpiece side 12.
  • the abrasive layers 8a, 8b may have abrasive grains such as normal brown fused aluminum and derivatives, blue aluminum alumina, white fused alumina, zirconia alumina, silicon carbide, kerarnikkom (ceramic grain), pink fused alumina, and / or monocrystalline alumina.
  • the abrasive layers may include supporting fillers, such as polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite, and / or graphite, which may be bonded with phenolic resin systems. Thus, a phenolic resin powder mixture is formed, which may be mixed with various fillers and additives.
  • a release layer is arranged, which is designed as a glass fabric layer 10.
  • a further glass fabric layer 10 is arranged between the carrier layer 6 and the abrasive layer 8a adjoining the carrier layer 6.
  • the glass fabric layers 10 act as separating layers and serve the strength of the roughing disc 1.
  • the glass fabric layers 10 extend from an outer edge 15 of the roughing disc 1 to the central recess 2 or encircle the central recess 2 annularly.
  • the central recess 2 is designed as a recessed hub.

Abstract

The invention relates to a roughing disc for machining material surfaces, comprising a disc-like main body (3) with a tool side (13) that is able to face towards a tool and a workpiece side (12) that is able to face towards a workpiece, wherein the main body (3) comprises a central cutout (2), through which an axis of rotation (5) passes, for direct or indirect attachment of a drive shaft of the tool, a disc-like carrier layer (6) arranged on the tool side (13), at least one abrasive layer (8a, 8b) and a separating layer between adjacent layers. The carrier layer (6) is formed from a material mixture which is free of additives with an abrasive action and which comprises at least one mineral additive.

Description

Schruppscheibe mit Trägerschicht  Grinding disc with carrier layer
Die Erfindung betrifft eine Schruppscheibe. The invention relates to a roughing disc.
Eine derartige Schruppscheibe ist aus der Praxis bekannt und eignet sich für das Schruppschleifen von Materialoberflächen diverser Materialien, d.h. zum flächigen Abtragen von Material. Sie umfasst einen scheibenförmigen Grundkörper mit einer einem Werkzeug zuwendbaren Werkzeugseite und einer einem Werkstück zuwendbaren Werkstückseite. Der Grundkörper umfasst eine von einer Drehachse durchgriffene zentrale Ausnehmung zur direkten oder indirekten Anbindung einer Antriebswelle eines Werkzeugs. Der Grundkörper umfasst zudem eine scheibenförmige an der Werkzeugseite angeordnete Trägerschicht, mindestens eine Schleifschicht und eine Trennschicht zwischen benachbarten Schichten. Bisher bekannte Schruppscheiben bestehen aus mehreren Schleifschichtlagen, welche eine Mischung aus Phenolharz und Schleif körnern umfassen, wobei die Mischung mit diversen Füllstoffen und Additiven versetzt sein kann. Es ist auch bekannt, dass die Schichten mittels Trennschichten voneinander getrennt sind, so dass entlang der Drehachse die Schleifschichten und Trennschichten abwechselnd angeordnet sind. Es sind auch Schruppscheiben bekannt, welche Schichten aus unterschiedlichenSuch a roughing disc is known in practice and is suitable for the rough grinding of material surfaces of various materials, i. for surface removal of material. It comprises a disk-shaped main body with a tool side turned tool side and a workpiece zuwendbaren workpiece side. The main body comprises a centered through a rotary axis central recess for direct or indirect connection of a drive shaft of a tool. The main body also comprises a disk-shaped carrier layer arranged on the tool side, at least one abrasive layer and a separating layer between adjacent layers. Previously known roughing discs consist of several abrasive layer layers, which comprise a mixture of phenolic resin and abrasive grains, wherein the mixture may be mixed with various fillers and additives. It is also known that the layers are separated from one another by means of separating layers, so that the grinding layers and separating layers are arranged alternately along the axis of rotation. There are also known grinding discs, which layers of different
Materialien aufweisen. Dadurch können über verschiedene Schleifinischungen in den unterschiedlichen Schleifschichten eine differenzierte Anpassung an die Anwendung bzw. den Schleifprozess vorgenommen werden. Have materials. As a result, a differentiated adaptation to the application or the grinding process can be carried out by means of different grinding mixtures in the different grinding layers.
Bisher bekannte Schruppscheiben weisen jedoch keinen zufriedenstellenden Verbund zwischen benachbarten Schichten aus verschiedenen Materialien und den eingesetzten Glasgewebelagen auf. Bisher bekannte Schruppscheiben sind zudem nicht ausreichend fest und/oder steif. However, previously known grinding discs do not have a satisfactory bond between adjacent layers of different materials and the used Glass fabric layers on. Previously known roughing wheels are also not sufficiently strong and / or stiff.
Der Erfindung liegt die Aufgabe zugrunde, eine Schruppscheibe der einleitend genannten Gattung zu schaffen, welche sich durch einen verbesserten Aufbau auszeichnet und insbesondere einen verbesserten Verbund zwischen benachbarten Schichten aus verschiedenen Materialien sowie eine verbesserte Festigkeit und/oder Steifigkeit aufweist. The invention has for its object to provide a roughing disc of the aforementioned type, which is characterized by an improved structure and in particular has an improved bond between adjacent layers of different materials and improved strength and / or rigidity.
Diese Aufgäbe ist erfindungsgemäß durch die Schruppscheibe mit den Merkmalen des Patentanspruches 1 gelöst. Die Schruppscheibe nach der Erfindung umfasst einen scheibenförmigen Grundkörper mit einer einem Werkzeug zuwendbaren Werkzeugseite und einer einem Werkstück zuwendbaren Werkstückseite. Der Grundkörper umfasst eine von einer Drehachse durchgriffene zentrale Ausnehmung zur direkten oder indirekten Anbindung einer Antriebswelle des Werkzeugs, eine scheibenförmige und an der Werkzeugseite ange- ordnete Trägerschicht, mindestens eine Schleifschicht und eine Trennschicht zwischen benachbarten Schichten. Benachbarte Schichten in diesem Sinne sind benachbarte Schleifschichten bei einer Anordnung mehrerer Schleifschichten sowie eine Schleifschicht und eine dazu benachbarte Trägerschicht. Die erfindungsgemäße Schruppscheibe zeichnet sich insbesondere dadurch aus, dass die Trägerschicht aus einer Materialmi- schung gebildet ist, welche von schleifaktiven Zusätzen frei ist und welche zumindest einen mineralischen Zusatz umfasst. This abandonment is inventively achieved by the roughing disc with the features of claim 1. The roughing disc according to the invention comprises a disk-shaped basic body with a tool side which can be turned over a tool and a workpiece side which can be turned towards a workpiece. The main body comprises a center recess, through which a rotation axis passes, for direct or indirect connection of a drive shaft of the tool, a disc-shaped carrier layer arranged on the tool side, at least one grinding layer and a separating layer between adjacent layers. Adjacent layers in this sense are adjacent abrasive layers in an array of multiple abrasive layers and an abrasive layer and a support layer adjacent thereto. The roughing disc according to the invention is characterized in particular by the fact that the carrier layer is formed from a mixture of materials which is free of abrasive additives and which comprises at least one mineral additive.
Dadurch ist ein guter Verbund der Trägerschicht, die keine schleifaktiven Zusätze umfasst, mit der Schleifschicht, welche schleifaktive Zusätze umfasst, gewährleistet. Zudem kann ein guter Verbund mit dem Glasgewebe sowie eine geeignete Festigkeit und/oder Steifigkeit gewährleistet werden. Die Vorteile der erfindungsgemäßenAs a result, a good bond of the carrier layer, which does not comprise abrasive additives, is ensured with the abrasive layer, which comprises grinding-active additives. In addition, a good bond with the glass fabric and a suitable strength and / or rigidity can be ensured. The advantages of the invention
Schruppscheibe werden insbesondere dadurch erzielt, dass die Trägerschicht frei von schleifaktiven Zusätzen ist und eine ausschließlich stützende Funktion erfüllt. Um diese Funktion zu erzielen eignen sich ganz besonders mineralische Zusätze. Bei einer bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung kann der mineralische Zusatz Basalt, Quarzsand, Wollastonit, Aluminiumsilikat und/oder Kaolin sein. Die Mischung der mindestens einen Trägerschicht kann auch unterschiedliche Zusätze aus dieser Gruppe umfassen. Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung kann der mineralische Zusatz eine Möns' sehe Härte von mindestens 2, vorzugsweise zwischen 7 und 9 haben. Insbesondere dadurch kann eine hohe Festigkeit der Schruppscheibe gewährleistet werden, je größer die Härte des Zusatzes ist. Grinding disc are achieved in particular by the fact that the carrier layer is free of abrasive additives and fulfills an exclusively supporting function. In order to achieve this function are particularly mineral additives. In a preferred embodiment of the roughing disc according to the invention, the mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin. The mixture of the at least one carrier layer may also comprise different additives from this group. In a further preferred embodiment of the roughing disc according to the invention, the mineral additive may have a hardness of at least 2, preferably between 7 and 9. In particular, a high strength of the roughing disc can be ensured, the greater the hardness of the additive.
Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfin- dung hat der mineralische Zusatz eine Korngröße von 30 bis 1000 μm, vorzugsweise 200 bis 500 μm. In a further preferred embodiment of the roughing disc according to the invention, the mineral additive has a particle size of 30 to 1000 μm, preferably 200 to 500 μm.
Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung ist das Korn des mineralischen Zusatzes mit Phenolharzsystemen, umfassend Resol-/Novolak-Gemisch, umhüllt. Resole sind schmelzbare, lösliche Phenoplaste, die reaktive Methylolgruppen enthalten und bei der Kondensation von Phenolen mit Formaldehyd unter basischen Bedingungen entstehen. Die Benzolringe sind hierbei über Methylengruppen sowie über Etherbrücken miteinander verbunden. Novolake sind Phenolharze mit einem Formaldehyd-Phenol- Verhältnis kleiner als 1:1, die durch saure Kondensation der Edukte erhalten werden. Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung weist das Resol eine Viskosität von 1000 bis 5000 mPa-s, vorzugsweise 1200 bis 3500 mPa-s auf. In a further preferred embodiment of the roughing wheel according to the invention, the grain of the mineral additive is coated with phenolic resin systems comprising resol / novolak mixture. Resoles are fusible, soluble phenolic resins that contain reactive methylol groups and are formed in the condensation of phenols with formaldehyde under basic conditions. The benzene rings are connected to each other via methylene groups and via ether bridges. Novolaks are phenolic resins with a formaldehyde-phenol ratio of less than 1: 1, which are obtained by acid condensation of the starting materials. In a further preferred embodiment of the roughing disc according to the invention, the resol has a viscosity of 1000 to 5000 mPas, preferably 1200 to 3500 mPas.
Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung weist das Novolak ein Gehalt von Hexamethylentetramin von mindestens 9 Vol%, vorzugsweise 12 bis 16 Vol% und eine Fließstrecke von 15 bis 35 mm, vorzugsweise 17 bis 26 mm auf. Bei dem Novolak kann es sich zudem um modifizierten Novolak handeln. Bei einer weiteren bevorzugten Ausführungsform der Schruppscheibe nach der Erfindung können dem Novolak zusätzliche definierte Mengen von anderen Zusätzen und/oder Additiven von weniger als 20 vol% zugesetzt sein. In a further preferred embodiment of the roughing disc according to the invention, the novolak has a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm. The novolac may also be modified novolac. In a further preferred embodiment of the roughing wheel according to the invention, additional defined amounts of other additives and / or additives of less than 20% by volume may be added to the novolak.
Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung sind der Beschreibung, der Zeichnung und den Patentansprüchen entnehmbar. Further advantages and advantageous embodiments of the subject matter of the invention are the description, the drawings and the claims removed.
Ein Ausführungsbeispiel einer Schruppscheibe nach der Erfindung ist in der Zeichnung schematisch vereinfacht dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. An embodiment of a roughing disc according to the invention is shown schematically simplified in the drawing and will be explained in more detail in the following description.
Die einzige Figur der Zeichnung zeigt einen Schnitt durch eine erfindungsgemäße Schruppscheibe. The single FIGURE of the drawing shows a section through a roughing disc according to the invention.
Die in der Zeichnung dargestellte Schruppscheibe 1 weist einen scheibenförmigen Grundkörper 3 mit einem schichtartigen Aufbau und einem Außenradius a auf. Der Grundkörper 3 hat eine einem Werkzeug zuwendbare Werkzeugseite 13 und eine einem Werkstück zuwendbare Werkstückseite 12. Der Grundkörper 3 umfasst eine zentrale Ausnehmung 2, welche von einer Drehachse 5 durchgriffen ist. Die Drehachse S liegt im Rotationszentrum der Schruppscheibe 1. In der Ausnehmung 2 ist ein Einsatz 4 zum Befestigen der Schruppscheibe 1 an einer Antriebswelle eines Werkzeugs angeordnet. An der dem Werkzeug zugewandten Werkzeugseite 13 der Schruppscheibe ist eine Trägerschicht 6 angeordnet. Die Trägerschicht 6 umfasst eine Mischung, welche Mischung von schleifaktiven Zusätzen frei ist und welche zumindest einen mineralischen Zusatz umfasst. Der mineralische Zusatz kann Basalt, Quarzsand, Wollastonit, Aluminiumsilikat und/oder Kaolin sein. Die Mischung der mindestens einen Trägerschicht kann auch unterschiedliche Zusätze aus dieser Gruppe umfassen. Der Zusatz kann zudem eine Mohs'sche Härte von mindestens 2, vorzugsweise zwischen 7 und 9 aufweisen. Die Korngröße des Zusatzes kann zwischen 30 und 1000 um, vorzugsweise zwischen 200 bis 500 μm liegen. Die Körner des Zusatzes können mit Phenolharzsystemen umhüllt sein, wobei das Phenolharzsystem ein ResoWNovolak-Gemisch umfassen kann. Das Resol kann eine Viskosität von 1000 bis 5000 mPa-s, vorzugsweise 1200 bis 3500 mPa-s aufwei- sen. Das Novolak kann ein Gehalt von Hexamethylentetramin von mindestens 9 Vol%, vorzugsweise 12 bis 16 Vol% und eine Fließstrecke von 15 bis 35 mm, vorzugsweise 17 bis 26 mm aufweisen. Zudem kann das Novolak zusätzliche definierte Mengen von anderen Zusätzen und/oder Additiven von weniger als 20 Vol% umfassen. Somit weist die Trägerschicht 6 eine hohe Festigkeit auf. Sie kann auch eine netzartige Einlage umfassen, um die Stabilität der Schruppscheibe 1 weiter zu erhöhen. The roughing disc 1 shown in the drawing has a disk-shaped base body 3 with a layer-like structure and an outer radius a. The main body 3 has a tool side 13 which can be turned over a tool and a workpiece side 12 which can be turned over to a workpiece. The main body 3 comprises a central recess 2, which is penetrated by an axis of rotation 5. The axis of rotation S is located in the center of rotation of the roughing disc 1. In the recess 2, an insert 4 for fixing the roughing disc 1 is arranged on a drive shaft of a tool. At the tool facing tool side 13 of the roughing disc, a carrier layer 6 is arranged. The carrier layer 6 comprises a mixture which mixture of abrasive additives is free and which comprises at least one mineral additive. The mineral additive may be basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin. The mixture of the at least one carrier layer may also comprise different additives from this group. The additive may also have a Mohs hardness of at least 2, preferably between 7 and 9. The grain size of the additive may be between 30 and 1000 .mu.m, preferably between 200 and 500 .mu.m. The granules of the additive may be coated with phenolic resin systems wherein the phenolic resin system may comprise a ResoWNovolak mixture. The resol may have a viscosity of 1000 to 5000 mPa · s, preferably 1200 to 3500 mPa · s. sen. The novolak may have a content of hexamethylenetetramine of at least 9% by volume, preferably 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm. In addition, the novolak may comprise additional defined amounts of other additives and / or additives of less than 20% by volume. Thus, the carrier layer 6 has a high strength. It may also include a net-like insert to further increase the stability of the roughing disc 1.
Die Schruppscheibe 1 weist darüber hinaus zwei in Richtung der Achse 5 gestapelte Schleifschichten 8a, 8b auf, welche an der Werkstückseite 12 angeordnet sind. Die Schleifschichten 8a, 8b können schleifaktive Körnungen, wie Normalkorund braun (regulär brown fused alumin) und Derivate, Aluminiumoxid blau (blue fired alumina), Edelkorund weiß (white fused alumina), Zirkonkorund (zirconia alumina), Siliciumcar- bid, Kerarnikkom (ceramic grain), Edelkorund rosa (pink fused alumina) und/oder einkristallines Aluminiumoxid (monocrystalline alumina) umfassen. Zudem können die Schleifschichten unterstützende Füllstoffe, wie Polyaluminiumfluorid, Kryolit, Pyrit, Calcit, Wollastonit und/oder Graphit umfassen, welche mit Phenolharzsystemen gebunden sein können. Somit ist eine Phenolharz-ScWeifkornmischung gebildet, die mit diversen Füllstoffen und Additiven versetzt sein kann. The roughing disc 1 also has two stacked in the direction of the axis 5 grinding layers 8a, 8b, which are arranged on the workpiece side 12. The abrasive layers 8a, 8b may have abrasive grains such as normal brown fused aluminum and derivatives, blue aluminum alumina, white fused alumina, zirconia alumina, silicon carbide, kerarnikkom (ceramic grain), pink fused alumina, and / or monocrystalline alumina. In addition, the abrasive layers may include supporting fillers, such as polyaluminum fluoride, cryolite, pyrite, calcite, wollastonite, and / or graphite, which may be bonded with phenolic resin systems. Thus, a phenolic resin powder mixture is formed, which may be mixed with various fillers and additives.
Zwischen den beiden Schleif schichten 8a, 8b ist eine Trennschicht angeordnet, die als Glasgewebelage 10 ausgeführt ist. Eine weitere Glasgewebelage 10 ist zwischen der Trägerschicht 6 und der an die Trägerschicht 6 angrenzenden Schleifschicht 8a angeordnet. Die Glasgewebelagen 10 fungieren als Trennschichten und dienen der Festigkeit der Schruppscheibe 1. Die Glasgewebelagen 10 erstrecken sich von einem Außenrand 15 der Schruppscheibe 1 bis zu der zentralen Ausnehmung 2 bzw. umgreifen die zentrale Ausnehmung 2 ringförmig. Um eine optimale Anbindung an ein Werkzeug zu gewährleisten, ist die zentrale Ausnehmung 2 als versenkte Nabe ausgeführt. Between the two abrasive layers 8 a, 8 b, a release layer is arranged, which is designed as a glass fabric layer 10. A further glass fabric layer 10 is arranged between the carrier layer 6 and the abrasive layer 8a adjoining the carrier layer 6. The glass fabric layers 10 act as separating layers and serve the strength of the roughing disc 1. The glass fabric layers 10 extend from an outer edge 15 of the roughing disc 1 to the central recess 2 or encircle the central recess 2 annularly. In order to ensure an optimal connection to a tool, the central recess 2 is designed as a recessed hub.

Claims

Patentansprüche claims
1. Schruppscheibe zur Bearbeitung von Materialoberflächen, umfassend 1. roughing disc for machining material surfaces, comprising
einen scheibenförmigen Grundkörper (3) mit einer einem Werkzeug zuwendbaren Werkzeugseite (13) und einer einem Werkstück zuwendbaren Werkstückseite (12), wobei der Grundkörper (3) eine von einer Drehachse (5) durchgriffene zentrale Ausnehmung (2) zur direkten oder indirekten Anbindung einer Antriebswelle des Werkzeugs, eine scheibenförmige an der Werkzeugseite (13) angeordnete Trägerschicht (6), mindestens eine Schleifschicht (8a, 8b) und eine Trennschicht zwischen benachbarten Schichten umfasst, dadurch gekennzeichnet, dass die Trägerschicht (6) aus einer Materialmischung gebildet ist, welche von schleifaktiven Zusätzen frei ist und welche zumindest einen mineralischen Zusatz umfasst.  a disk-shaped basic body (3) with a tool side (13) which can be turned over a tool and a workpiece side (12) which can be turned over to a workpiece, wherein the basic body (3) has a central recess (2) through which an axis of rotation (5) passes directly or indirectly Drive shaft of the tool, a disc-shaped on the tool side (13) arranged carrier layer (6), at least one abrasive layer (8a, 8b) and a separating layer between adjacent layers comprises, characterized in that the carrier layer (6) is formed from a mixture of materials which is free from abrasive additives and which includes at least one mineral additive.
2. Schruppscheibe nach Anspruch 1, dadurch gekennzeichnet, dass der mineralische Zusatz Basalt, Quarzsand, Wollastonit, Aluminiumsilikat und/oder Kaolin ist2. grinding disc according to claim 1, characterized in that the mineral additive is basalt, quartz sand, wollastonite, aluminum silicate and / or kaolin
3. Schruppscheibe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der mineralische Zusatz eine Mobs' sehe Härte von mindestens 2, vorzugsweise zwischen 7 und 9 hat. 3. grinding disc according to claim 1 or 2, characterized in that the mineral additive has a Mobs' hardness of at least 2, preferably between 7 and 9 has.
4. Schruppscheibe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der mineralische Zusatz eine Korngröße von 30 bis 1000 um, vorzugsweise 200 bis 500 um hat. 4. grinding disc according to one of claims 1 to 3, characterized in that the mineral additive has a particle size of 30 to 1000 microns, preferably 200 to 500 microns.
5. Schruppscheibe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Korn des mineralischen Zusatzes mit Phenolharzsystemen, umfassend ein Re- sol-/Novolak-Gemisch, umhüllt ist. 5. Roughing wheel according to one of claims 1 to 4, characterized in that the grain of the mineral additive with phenolic resin systems, comprising a re- sol / novolak mixture, coated.
6. Schruppscheibe nach Anspruch 5, dadurch gekennzeichnet, dass das Resol eine Viskosität von 1.000 bis 5.000 mPa s, vorzugsweise 1.200 bis 3.500 mPa-s aufweist. 6. grinding disc according to claim 5, characterized in that the resol has a viscosity of 1,000 to 5,000 mPa s, preferably 1,200 to 3,500 mPa s.
7. Schruppscheibe nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das No- volak ein Gehalt an Hexamethylentetramin von mindestens 9 Vol%, vorzugsweise7. Roughing disc according to claim 5 or 6, characterized in that the Novalak a content of hexamethylenetetramine of at least 9 vol%, preferably
12 bis 16 Vol% und eine Fließstrecke von 15 bis 35 mm, vorzugsweise 17 bis 26 mm aufweist. 12 to 16% by volume and a flow distance of 15 to 35 mm, preferably 17 to 26 mm.
8. Schruppscheibe nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass dem Novolak zusätzlich definierte Mengen von anderen Zusätzen und/oder Additiven von weniger als 20 Vol% zugesetzt sind. 8. Roughing wheel according to one of claims 5 to 7, characterized in that the novolak additionally defined amounts of other additives and / or additives of less than 20% by volume are added.
9. Schruppscheibe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Trennschicht eine Glasgewebelage (10) ist. 9. grinding disc according to one of claims 1 to 8, characterized in that the separating layer is a glass fabric layer (10).
PCT/EP2017/063090 2016-08-10 2017-05-31 Roughing disc having a carrier layer WO2018028849A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP17733362.2A EP3496897A1 (en) 2016-08-10 2017-05-31 Roughing disc having a carrier layer
JP2019506661A JP2019524464A (en) 2016-08-10 2017-05-31 Roughing disc with support layer
CA3033406A CA3033406A1 (en) 2016-08-10 2017-05-31 Roughing disc having a backing layer
AU2017311190A AU2017311190A1 (en) 2016-08-10 2017-05-31 Roughing disc having a carrier layer
CN201780062668.0A CN109890562B (en) 2016-08-10 2017-05-31 Abrasive disk with support layer
RU2019106513A RU2766921C2 (en) 2016-08-10 2017-05-31 Roughing grinding disc with carrying layer
KR1020197005123A KR20190035767A (en) 2016-08-10 2017-05-31 Roughing disc with backing layer
SG11201901044QA SG11201901044QA (en) 2016-08-10 2017-05-31 Roughing disc having a backing layer
US16/323,375 US20210323113A1 (en) 2016-08-10 2017-05-31 Roughing Disc Having a Backing Layer
BR112019002336A BR112019002336A2 (en) 2016-08-10 2017-05-31 support layer roughing disc
ZA2019/00649A ZA201900649B (en) 2016-08-10 2019-01-30 Roughing disc having a carrier layer

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DE102016114851.2 2016-08-10
DE102016114851 2016-08-10

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EP (1) EP3496897A1 (en)
JP (1) JP2019524464A (en)
KR (1) KR20190035767A (en)
CN (1) CN109890562B (en)
AU (1) AU2017311190A1 (en)
BR (1) BR112019002336A2 (en)
CA (1) CA3033406A1 (en)
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US20210323113A1 (en) 2021-10-21
BR112019002336A2 (en) 2019-06-18
KR20190035767A (en) 2019-04-03
RU2019106513A3 (en) 2020-09-17
RU2019106513A (en) 2020-09-17
ZA201900649B (en) 2020-06-24
EP3496897A1 (en) 2019-06-19
AU2017311190A1 (en) 2019-02-21
CN109890562A (en) 2019-06-14
JP2019524464A (en) 2019-09-05
RU2766921C2 (en) 2022-03-16
CN109890562B (en) 2021-09-28
SG11201901044QA (en) 2019-03-28
CA3033406A1 (en) 2018-02-15

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