EP0072374B1 - Method of studding metallic brush tools, with particles of an abrasive, and metallic a brush tool, obtained by this method - Google Patents

Method of studding metallic brush tools, with particles of an abrasive, and metallic a brush tool, obtained by this method Download PDF

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Publication number
EP0072374B1
EP0072374B1 EP81106613A EP81106613A EP0072374B1 EP 0072374 B1 EP0072374 B1 EP 0072374B1 EP 81106613 A EP81106613 A EP 81106613A EP 81106613 A EP81106613 A EP 81106613A EP 0072374 B1 EP0072374 B1 EP 0072374B1
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EP
European Patent Office
Prior art keywords
tool
brush
particles
metallic
bristles
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.)
Expired
Application number
EP81106613A
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German (de)
French (fr)
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EP0072374A1 (en
Inventor
Oswald Kopp
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.)
OFFERTA DI LICENZA AL PUBBLICO
Original Assignee
Kadia-Diamant Maschinen- und Werkzeugfabrik O Kopp & Co GmbH
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Priority to AT81106613T priority Critical patent/ATE18441T1/en
Publication of EP0072374A1 publication Critical patent/EP0072374A1/en
Application granted granted Critical
Publication of EP0072374B1 publication Critical patent/EP0072374B1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1633—Process of electroless plating
    • C23C18/1655—Process features
    • C23C18/1662—Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/10—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of brushes
    • 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
    • B24D3/007—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 between different parts of an abrasive tool
    • 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
    • B24D3/04—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 inorganic
    • B24D3/06—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 inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1603—Process or apparatus coating on selected surface areas
    • C23C18/1605—Process or apparatus coating on selected surface areas by masking
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/18—Pretreatment of the material to be coated
    • C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
    • C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
    • C23C18/1827—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment only one step pretreatment
    • C23C18/1834—Use of organic or inorganic compounds other than metals, e.g. activation, sensitisation with polymers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires

Definitions

  • the present invention relates to a method for filling the free ends of the bristles of metallic brush tools with abrasive particles, in which the tool is first covered, leaving the areas to be occupied by the abrasive particles, then immersed in the partially covered tool Galvanobad, in which abrasive particles are introduced, applying a layer of preferably hard metallic carrier material with partial embedding of at least a plurality of abrasive particles on the exposed areas of the tool by electrolytic or electroless galvanic metal deposition, and then removing the cover from the relevant areas of the Tool can be made.
  • the present invention also relates to a metallic brush tool produced by this method.
  • a method for filling the peripheral edge of a grinding wheel with abrasive particles of the type mentioned at the outset has become known from US Pat. No. 3,957,593.
  • the grinding wheel is covered on its two end faces with a plastic tape.
  • this plastic band must be cut according to the circular end faces of the grinding wheel, such a measure for covering the surfaces not to be occupied with abrasive particles is possible in the case of large flat areas on grinding wheels, but is practically excluded as a corresponding covering measure for brush tools.
  • the object of the present invention is to provide a method for filling the grinding areas of metallic brush tools with abrasive particles of the type mentioned at the beginning, which makes it possible to cover the brush tool in a simple and quick manner to such an extent that only the free ends of the bristles of the brush tool can be filled with abrasive particles.
  • a metallic brush tool produced by this method is to be created.
  • This object is achieved in a method for filling the free ends of the bristles of metallic brush tools with abrasive particles of the type mentioned at the outset in that at least the part of the brush tool provided with the bristles is filled with a non-conductive material in such a way that it is converted into a non-conductive material Material is immersed, which solidifies in a certain ambient temperature range and is liquid, preferably viscous at a higher temperature, and that the ends of the bristles to be coated with the abrasive particles are then exposed again.
  • a metallic brush tool in which the free ends of the metallic bristles are galvanically provided with caps, which consist of a hard metal as the carrier material and partially embedded abrasive particles, preferably diamond particles.
  • the removal of the cover after providing the bristle ends with the abrasive particles is very easy and fast and completely possible that the brush tool is heated to the temperature in question, so that the liquid covering material can drip out between the bristles or out of the brush.
  • a metallic brush tool 11 for deburring in which the metalli rule bristles 12 are attached in bundles and in a helical arrangement to the tool rotation axis 13, which consists of two twisted metal wires and which can be clamped at its one free end 16 in a corresponding drive machine.
  • each free end 18 of a bristle 12 is provided with a cap 19 which is approximately two to three times the thickness of the metallic bristle 12.
  • the cap 19 consists of nickel as the carrier material 21, in which diamond particles 22 are partially or completely embedded as abrasive particles such that they protrude from the carrier material 21 by about 1/2 to 1/3 of their size.
  • a multiplicity of abrasive particles 22 are also embedded within the carrier material 21 and only a part of the abrasive particles 22 protrude from the carrier material 21.
  • the fully embedded particles 22 only emerge and become effective when the cap 19 wears out during the processing in question.
  • the grain size of the abrasive particles or the diamond particles 22 can be selected differently, depending on the field of application and the material to be processed.
  • the carrier material which is nickel here
  • the carrier material which is nickel here
  • the carrier material can also be replaced by another hard metal, such as chromium, or else by a softer metal, such as copper, zinc or the like.
  • the abrasive particles 22, which are diamond particles here can also be replaced by other abrasives, such as cubic boron nitride, corundum, sapphire, ruby or the like.
  • the brush is then clamped on a lathe, for example, and ground on the outer circumference with a normal grinding brush, so that the free ends of the bristles 12 are exposed to a length of about 1 to 2 mm. These exposed ends or tips 18 of the bristles 12 are then galvanically covered with the caps 19.
  • the exposed ends 18 of the bristles 12 are placed in an etching bath in preparation for the galvanic application of the caps 19, so that the bristle ends 17 are etched and thus chemically cleaned.
  • the metallic brush tool 11 which is therefore largely covered and in which only the above-mentioned bristle ends 18 are exposed for about 1 to 2 mm, is now immersed in an electroplating bath and thus represents one electrode.
  • the electroplating bath can be operated electrolytically or without current will.
  • a carrier material 21, in the exemplary embodiment nickel is deposited from the other electrode onto the exposed ends 18 of the bristles 12 and applied galvanically.
  • the diamond particles 22 are brought to the bristle ends 18 and embedded in the carrier material simultaneously with the galvanic application of nickel 21 to the bristle ends 18.
  • the brush tool 11 according to FIGS. 1 and 2 which is to be filled with diamond particles 22 as abrasive particles, is placed on a, for example, channel-shaped support in the electroplating bath, in such a way that it is completely immersed.
  • the diamond powder is then brought as a pulpy substance onto the upper area of the brush of the tool 11.
  • the electroplating bath is then activated, so that nickel is deposited as the carrier material 21 at the ends 18 of the bristles 12 and the particles of the diamond powder are also embedded in the process.
  • the brush tool 11 is rotated, whereupon the other opposite area of the brush is coated with the diamond powder and the electroplating bath is then activated again, so that the diamond particles are also galvanically applied to a certain extent of the carrier material at the bristle ends 18 are embedded in the carrier material.
  • the diamond particles only adhere imperfectly to the bristle ends 18, since until now these have only been embedded on the carrier material 21 with a relatively small layer thickness.
  • the further embedding of the diamond particles takes place at home in a second electroplating bath, which can also be operated electrolytically or without current.
  • the diamond particles are now embedded in such a way that the inner abrasive particles are completely embedded in the carrier material 21, while the outer diamond particles are only embedded to such an extent that they are at most about 1/4 to 1/3 of their size from the carrier material 21 protrude. The time it takes for this embedding depends on the data of the electroplating bath.
  • the diamond particles are anchored within the carrier material 21 in such a way that they can be used as abrasives and have a very long service life.
  • a certain amount of wear and tear is absorbed by the fact that the cap 19 has a certain size and further diamond particles are arranged within the cap 19, which are then exposed during the wear process and come into effect.
  • a carrier material 21 in the form of a thin layer, that is to say nickel them, after they have been etched in a special electroplating bath.
  • the covering material in the form of the non-conductive wax or other material must be removed again.
  • the relevant part of the brush tool 11 is heated to the appropriate temperature, so that the liquid wax can then drip out of the brush 11 again.
  • the non-conductive covering material is removed again in a simple manner.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Electrochemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Brushes (AREA)

Abstract

1. Method for studding the free ends of the bristles of metallic brush tools with particles of grinding material, with which the tool is provided with a covering whilst these portions which shall studded with the grinding material particles, are left free, and subsequently the partially covered tool is dipped into a galavanic bath, into which the grinding material particles have been introduced, and further subsequently a layer of preferably hard metallic carrier material is deposited, whilst at least a plurality of grinding material particles is partially embedded onto said portions of tool, which had been left free, by electrolytic or currentless galvanic metal deposition, and in which further subsequently the cover from the corresponding portion of the tool is moved, wherein at least the bristle carrying brush tool portion is filled with non-conducting material by dipping it into a non-conducting material, which solidifies within a certain ambient temperature range and which at a higher temperature is liquid, preferably viscous, and that thereafter the cover is again removed from said ends of the bristles, which shall be studded with grinding material particles.

Description

Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Besetzen der freien Enden der Borsten von metallischen Bürstenwerkzeugen mit Schleifmittelteilchen, bei dem zunächst ein Abdecken des Werkzeugs unter Freilassen derjenigen Bereiche, die mit den Schleifmittelteilchen besetzt werden sollen, dann ein Eintauchen des teilweise abgedeckten Werkzeugs in ein Galvanobad, in das Schleifmittelteilchen eingebracht sind, ein Aufbringen einer Schicht aus vorzugsweise hartem metallischem Trägermaterial unter teilweiser Einbettung von mindestens einer Vielzahl von Schleifmittelteilchen auf die freigelassenen Bereiche des Werkzeugs durch elektrolytische oder stromlose galvanische Metallabscheidung, und ein anschließendes Entfernen der Abdeckung von den betreffenden Bereichen des Werkzeugs vorgenommen werden. Außerdem bezieht sich die vorliegende Erfindung auf ein nach diesem Verfahren hergestelltes metallisches Bürstenwerkzeug.The present invention relates to a method for filling the free ends of the bristles of metallic brush tools with abrasive particles, in which the tool is first covered, leaving the areas to be occupied by the abrasive particles, then immersed in the partially covered tool Galvanobad, in which abrasive particles are introduced, applying a layer of preferably hard metallic carrier material with partial embedding of at least a plurality of abrasive particles on the exposed areas of the tool by electrolytic or electroless galvanic metal deposition, and then removing the cover from the relevant areas of the Tool can be made. The present invention also relates to a metallic brush tool produced by this method.

Ein Verfahren zum Besetzen des Umfangsrandes einer Schleifscheibe mit Schleifmittelteilchen der eingangs genannten Art ist aus der US-A-3 957 593 bekannt geworden. Bei diesem bekannten Verfahren wird die Schleifscheibe, da lediglich ihr Umfangsrand einschl. benachbarter Bereiche mit Schleifmittelpartikeln versehen werden soll, an ihren beiden Stirnflächen mit einem Kunststoffband abgedeckt. Abgesehen davon, daß dieses Kunststoffband entsprechend der kreisförmigen Stirnflächen der Schleifscheibe geschnitten werden muß, ist eine derartige Maßnahme zum Abdecken der nicht mit Schleifmittelteilchen zu besetzenden Flächen bei großflächigen ebenen Bereichen an Schleifscheiben möglich, jedoch als entsprechende Abdeckmaßnahme bei Bürstenwerkzeugen praktisch ausgeschlossen.A method for filling the peripheral edge of a grinding wheel with abrasive particles of the type mentioned at the outset has become known from US Pat. No. 3,957,593. In this known method, since only its peripheral edge, including adjacent areas, is to be provided with abrasive particles, the grinding wheel is covered on its two end faces with a plastic tape. Apart from the fact that this plastic band must be cut according to the circular end faces of the grinding wheel, such a measure for covering the surfaces not to be occupied with abrasive particles is possible in the case of large flat areas on grinding wheels, but is practically excluded as a corresponding covering measure for brush tools.

Aus der DE-A-2 802 027 ist ein Verfahren zum Besetzen der Stirnfläche von Schleifscheiben mit Schleifmittelteilchen bekannt, bei dem die Schleifscheibenstirnfläche nicht ganzflächig sondern nur teilweise mit Schleifmittelteilchen besetzt wird. Dies erfolgt in der Weise, daß auf die zu besetzende Stirnfläche der Schleifscheibe ein Abdecksieb vorübergehend aufgelegt und dann die Stirnfläche durch dieses Abdecksieb hindurch mit einer Abdeckflüssigkeit besprüht wird. Danach wird das Abdecksieb entfernt, worauf das Besetzen der Schleifscheibe mit Schleifmittelteilchen folgen kann. Auch dieses Verfahren ist nur dort anwendbar, wo es sich um im wesentlichen ebene und relativ große Flächen handelt, die teilweise mit Schleifmittelteilchen zu besetzen sind.From DE-A-2 802 027 a method for covering the end face of grinding wheels with abrasive particles is known, in which the abrasive wheel end face is not covered over the whole area but only partially with abrasive particles. This is done in such a way that a covering sieve is temporarily placed on the end face of the grinding wheel to be filled and then the end face is sprayed with a covering liquid through this covering sieve. Then the covering sieve is removed, whereupon the grinding wheel can be filled with abrasive particles. This method, too, can only be used where there are essentially flat and relatively large areas, some of which are to be filled with abrasive particles.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren zum Besetzen der Schleifbereiche von metallischen Bürstenwerk-zeugen mit Schleifmittelteilchen der eingangs genannten Art zu schaffen, das es ermöglicht, in einfacher und schneller Weise das Bürstenwerkzeug soweit abzudecken, daß ausschließlich die freien Enden der Borsten des Bürstenwerkzeugs mit Schleifmittelteilchen besetzt werden können. Außerdem soll ein nach diesem Verfahren hergestelltes metallisches Bürstenwerkzeug geschaffen werden.The object of the present invention is to provide a method for filling the grinding areas of metallic brush tools with abrasive particles of the type mentioned at the beginning, which makes it possible to cover the brush tool in a simple and quick manner to such an extent that only the free ends of the bristles of the brush tool can be filled with abrasive particles. In addition, a metallic brush tool produced by this method is to be created.

Diese Aufgabe wird bei einem Verfahren zum Besetzen der freien Enden der Borsten von metallischen Bürstenwerkzeugen mit Schleifmittelteilchen der eingangs genannten Art dadurch gelöst, daß zumindest der mit den Borsten versehene Teil des Bürstenwerkzeugs in der Weise mit einem nichtleitenden Material ausgefüllt wird, daß dieser in ein nichtleitendes Material eingetaucht wird, das in einem bestimmten Umgebungstemperaturbereich erstarrt und bei darüberliegender Temperatur flüssig, vorzugsweise zähflüssig ist, und daß danach die mit den Schleifmittelteilchen zu beschichtenden Enden der Borsten wieder freigelegt werden. Daraus vesultiert ein metallischen Bürstenwerkzeug, bei dem die freien Enden der metallischen Borsten galvanisch mit Kappen versehen sind, die aus einem Hartmetall als Trägermaterial und darin teilweise eingebetteten Schleifmittelpartikeln, vorzugsweise Diamantpartikel bestehen.This object is achieved in a method for filling the free ends of the bristles of metallic brush tools with abrasive particles of the type mentioned at the outset in that at least the part of the brush tool provided with the bristles is filled with a non-conductive material in such a way that it is converted into a non-conductive material Material is immersed, which solidifies in a certain ambient temperature range and is liquid, preferably viscous at a higher temperature, and that the ends of the bristles to be coated with the abrasive particles are then exposed again. This results in a metallic brush tool in which the free ends of the metallic bristles are galvanically provided with caps, which consist of a hard metal as the carrier material and partially embedded abrasive particles, preferably diamond particles.

Mit Hilfe der erfindungsgemäßen Verfahrensschritte, ist es in einfacher und schneller und insbesondere auch in gezielter Weise möglich, das Bürstenwerkzeug so vorzubereiten bzw. abzudecken, daß nur die gewünschten Bereiche der Enden der Borsten mit Schleifmittelteilchen besetzt werden. Außerdem ist es hierbei in vorteilhafter Weise möglich, die Größe des Bereichs der Borstenenden zu bestimmen, der mit Schleifmittelteilchen besetzt werden soll, so daß es möglich ist, die einzelnen Borstenenden mit relativ kleinen Kappen aus dem im Trägermaterial eingebetteten Schleifmittelteilchen zu versehen.With the aid of the method steps according to the invention, it is possible in a simple and faster and in particular also in a targeted manner to prepare or cover the brush tool in such a way that only the desired regions of the ends of the bristles are filled with abrasive particles. In addition, it is advantageously possible to determine the size of the area of the bristle ends that is to be filled with abrasive particles, so that it is possible to provide the individual bristle ends with relatively small caps made of the abrasive particles embedded in the carrier material.

Auch das Entfernen der Abdeckung nach dem Versehen der Borstenenden mit den Schleifmittelteilchen ist dadurch sehr einfach und schnell und vollständig möglich, daß das Bürstenwerkzeug auf die betreffende Temperatur erwärmt wird, so daß das dann flüssige Abdeckmaterial zwischen den Borsten bzw. aus der Bürste heraustropfen kann.Also, the removal of the cover after providing the bristle ends with the abrasive particles is very easy and fast and completely possible that the brush tool is heated to the temperature in question, so that the liquid covering material can drip out between the bristles or out of the brush.

Weitere Einzelheiten der Erfindung sind der folgenden Beschreibung zu entnehmen, in der die Erfindung anhand des in der Zeichnung dargestellten Ausführungsbeispieles näher beschrieben und erläutert wird. Es zeigt :

  • Figur 1 in schematischer perspektivischer Darstellung ein metallisches Bürstenentgratwerkzeug gemäß einem Ausführungsbeispiel vorliegender Erfindung, und
  • Figur 2 in vergrößerter Darstellung das freie, mit Schleifmittelteilchen besetzte Ende zweier Borsten des Bürstenentgratwerkzeugs nach Fig. 1 im Schnitt und in Ansicht.
Further details of the invention can be found in the following description, in which the invention is described and explained in more detail with reference to the embodiment shown in the drawing. It shows :
  • Figure 1 is a schematic perspective view of a metallic brush deburring tool according to an embodiment of the present invention, and
  • 2 shows an enlarged view of the free end of two bristles of the brush deburring tool according to FIG. 1, which is occupied by abrasive particles, in section and in view.

In Fig. 1 ist ein metallisches Bürstenwerkzeug 11 zum Entgraten dargestellt, bei dem die metallischen Borsten 12 bündelweise und in wendelförmiger Anordnung an der Werkzeugrotationsachse 13 befestigt sind, die aus zwei miteinander verdrillten Metalldrähten besteht und die an ihrem einen freien Ende 16 in eine entsprechende Antriebsmaschine einspannbar ist.In Fig. 1, a metallic brush tool 11 for deburring is shown, in which the metalli rule bristles 12 are attached in bundles and in a helical arrangement to the tool rotation axis 13, which consists of two twisted metal wires and which can be clamped at its one free end 16 in a corresponding drive machine.

Wie der Fig. 2 zu entnehmen ist, ist jedes freie Ende 18 einer Borste 12 mit einer Kappe 19 versehen, die im Verhältnis zur Dicke der metallischen Borste 12 etwa das zwei- bis dreifache beträgt. Die Kappe 19 besteht aus Nickel als Trägermaterial 21, in welchem Diamantpartikel 22 als Schleifmittelteilchen ganz oder derart teilweise eingebettet sind, daß sie zu etwa 1/2 bis 1/3 ihrer Größe aus dem Trägermaterial 21 herausragen. Innerhalb des Trägermaterials 21 ist also ebenfalls eine Vielzahl von Schleifmittelteilchen 22 eingebettet und nur ein Teil der Schleifmittelteilchen 22 ragt aus dem Trägermaterial 21 heraus. Die vollständig eingebetteten Teilchen 22 kommen erst bei Abnutzung der Kappe 19 während der betreffenden Bearbeitung hervor und zur Wirkung. Die Korngröße der Schleifmittelteilchen bzw. der Diamantpartikel 22 kann unterschiedlich gewählt werden, und zwar je nach Anwendungsgebiet und zu bearbeitendes Material.As can be seen in FIG. 2, each free end 18 of a bristle 12 is provided with a cap 19 which is approximately two to three times the thickness of the metallic bristle 12. The cap 19 consists of nickel as the carrier material 21, in which diamond particles 22 are partially or completely embedded as abrasive particles such that they protrude from the carrier material 21 by about 1/2 to 1/3 of their size. A multiplicity of abrasive particles 22 are also embedded within the carrier material 21 and only a part of the abrasive particles 22 protrude from the carrier material 21. The fully embedded particles 22 only emerge and become effective when the cap 19 wears out during the processing in question. The grain size of the abrasive particles or the diamond particles 22 can be selected differently, depending on the field of application and the material to be processed.

Es versteht sich, daß beim Werkzeug 11 das Trägermaterial, das hier Nickel ist, auch durch ein anderes Hartmetall, wie Chrom, oder auch durch ein weicheres Metall, wie Kupfer, Zink oder dgl. ersetzt werden kann. Außerdem können auch die Schleifmittelteilchen 22, die hier Diamantpartikel sind, durch andere Schleifmittel, wie kubisches Bornitrid, Korund, Saphir, Rubin oder dgl. ersetzt werden.It goes without saying that in the case of the tool 11, the carrier material, which is nickel here, can also be replaced by another hard metal, such as chromium, or else by a softer metal, such as copper, zinc or the like. In addition, the abrasive particles 22, which are diamond particles here, can also be replaced by other abrasives, such as cubic boron nitride, corundum, sapphire, ruby or the like.

Das Besetzen der metallischen Borsten 12 des Bürstenwerkzeugs 11 mit den Kappen 19 geht folgendermaßen vor sich :

  • Zunächst wird das metallische Bürstenwerkzeug 11 zumindest mit demjenigen Teil, der die Bürste bzw. die Borsten 12 enthält, vollständig mit einem nichtleitenden Material abgedeckt. Dieses Abdecken erfolgt dadurch, daß ein nichtleitendes Material verwendet wird, das in warmem Zustand flüssig, bspw. zähflüssig ist und in einem bestimmten Umgebungstemperaturbereich erstarrt. Bspw. ist das betreffende Material, ein Wachs, bei etwa 40 °C erstarrt, während es oberhalb dieser Temperatur bei bspw. etwa 200 °C eine flüssige bis teigige Breimasse ist. In dieses erwärmte bzw. erhitzte flüssige Material wird der betreffende Bürstenwerkzeugteil vollständig eingetaucht, dann herausgezogen und gedreht, wobei das anhaftende nichtleitende Material erstarrt. Dieser Vorgang, d. h. Eintauchen, Herausziehen und Drehen, wird so lange wiederholt, bis der Bürstenteil bzw. der mit den Borsten 12 versehene Teil des Werkzeuges 11 von dem nichtleitenden Material vollständig abgedeckt ist.
The filling of the metallic bristles 12 of the brush tool 11 with the caps 19 proceeds as follows:
  • First, the metallic brush tool 11 is completely covered with a non-conductive material, at least with the part that contains the brush or bristles 12. This covering takes place in that a non-conductive material is used which, when warm, is liquid, for example viscous, and solidifies in a certain ambient temperature range. E.g. is the material in question, a wax, solidifies at about 40 ° C, while above this temperature it is a liquid to pasty pulp at, for example, about 200 ° C. The brush tool part in question is completely immersed in this heated or heated liquid material, then pulled out and rotated, the adhering non-conductive material solidifying. This process, ie immersion, pulling out and turning, is repeated until the brush part or the part of the tool 11 provided with the bristles 12 is completely covered by the non-conductive material.

Es versteht sich, daß als nichtleitendes Material auch ein entsprechender Lack oder auch Gips Verwendung finden kann.It goes without saying that a corresponding lacquer or gypsum can also be used as the non-conductive material.

Daraufhin wird die Bürste auf bspw. eine Drehbank gespannt und mit einer normalen Schleifbürste außenumfangsseitig abgeschliffen, so daß die freien Enden der Borsten 12 auf etwa 1 bis 2 mm Länge freigelegt werden. Diese freigelegten Enden bzw. Spitzen 18 der Borsten 12 werden dann mit den Kappen 19 galvanisch besetzt.The brush is then clamped on a lathe, for example, and ground on the outer circumference with a normal grinding brush, so that the free ends of the bristles 12 are exposed to a length of about 1 to 2 mm. These exposed ends or tips 18 of the bristles 12 are then galvanically covered with the caps 19.

Die freigelegten Enden 18 der Borsten 12 werden zur Vorbereitung des galvanischen Aufbringens der Kappen 19 in ein Ätzbad gelegt, so daß die Borstenenden 17 angeätzt werden und damit chemisch gereinigt werden.The exposed ends 18 of the bristles 12 are placed in an etching bath in preparation for the galvanic application of the caps 19, so that the bristle ends 17 are etched and thus chemically cleaned.

Das metallische Bürstenwerkzeug 11, das also zum größten Teil abgedeckt ist und bei dem lediglich die oben erwähnten Borstenenden 18 etwa 1 bis 2 mm lang freiliegen, wird nun in ein Galvanikbad getaucht und stellt so die eine Elektrode dar. Das Galvanikbad kann elektrolytisch oder stromlos betrieben werden. Im Galvanikbad wird ein Trägermaterial 21, beim Ausführungsbeispiel Nickel, von der anderen Elektrode auf die freiliegenden Enden 18 der Borsten 12 abgeschieden und galvanisch aufgebracht. Dabei werden gleichzeitig mit dem galvanischen Aufbringen von Nickel 21 auf die Borstenenden 18 die Diamantpartikei 22 mit zu den Borstenenden 18 gebracht und in das Trägermaterial eingebettet.The metallic brush tool 11, which is therefore largely covered and in which only the above-mentioned bristle ends 18 are exposed for about 1 to 2 mm, is now immersed in an electroplating bath and thus represents one electrode. The electroplating bath can be operated electrolytically or without current will. In the electroplating bath, a carrier material 21, in the exemplary embodiment nickel, is deposited from the other electrode onto the exposed ends 18 of the bristles 12 and applied galvanically. The diamond particles 22 are brought to the bristle ends 18 and embedded in the carrier material simultaneously with the galvanic application of nickel 21 to the bristle ends 18.

Das Bürstenwerkzeug 11 gemäß den Fig. 1 und 2, das mit Diamantpartikel 22 als Schleifmittelteilchen besetzt werden soll, wird auf einen bspw. rinnenförmigen Träger im Galvanikbad gelegt, und zwar derart, daß es vollständig untergetaucht ist. Daraufhin wird das Diamantpulver als breiige Substanz auf den obenliegenden Bereich der Bürste des Werkzeuges 11 gebracht. Daraufhin wird das Galvanikbad aktiviert, so daß sich Nickel als Trägermaterial 21 an den Enden 18 der Borsten 12 abscheidet und dabei die Partikel des Diamantpulvers miteinbettet. Ist dies bis zu einem gewissen Grade erfolgt, so wird das Bürstenwerkzeug 11 gedreht, worauf der andere gegenüberliegende Bereich der Bürste mit dem Diamantpulver belegt und dann das Galvanikbad wieder aktiviert wird, so daß auch hier die Diamantpartikel bis zu einem gewissen Grade mit dem galvanischen Aufbringen des Trägermaterials an die Borstenenden 18 in das Trägermaterial eingebettet werden.The brush tool 11 according to FIGS. 1 and 2, which is to be filled with diamond particles 22 as abrasive particles, is placed on a, for example, channel-shaped support in the electroplating bath, in such a way that it is completely immersed. The diamond powder is then brought as a pulpy substance onto the upper area of the brush of the tool 11. The electroplating bath is then activated, so that nickel is deposited as the carrier material 21 at the ends 18 of the bristles 12 and the particles of the diamond powder are also embedded in the process. If this has been done to a certain degree, the brush tool 11 is rotated, whereupon the other opposite area of the brush is coated with the diamond powder and the electroplating bath is then activated again, so that the diamond particles are also galvanically applied to a certain extent of the carrier material at the bristle ends 18 are embedded in the carrier material.

In diesem Zustand haften die Diamantpartikel lediglich unvollkommen an den Borstenenden 18, da diese bis jetzt nur mit einer relativ geringen Schichtdicke am Trägermaterial 21 eingebettet sind. Das weitere Einbetten der Diamantpartikel erfolgt heim Ausführungsbeispiel in einem zweiten Galvanikbad, das ebenfalls elektrolytisch oder stromlos betrieben werden kann. In diesem Bad erfolgt nun ein Einbetten der Diamantpartikel in der Weise, daß die inneren Schleifmittelteilchen vollständig im Trägermaterial 21 eingebettet werden, während die äußeren Diamantpartikel nur soweit eingebettet werden, daß sie höchstens zu etwa 1/4 bis 1/3 ihrer Größe aus dem Trägermaterial 21 herausragen. Die Zeit, die für dieses Einbetten benötigt wird, hängt von den Daten des Galvanikbades ab. Am Ende dieses Prozesses sind die Diamantpartikel innerhalb des Trägermaterials 21 derart verankert, daß sie als Schleifmittel Verwendung finden können und dabei eine sehr hohe Standzeit besitzen. Eine gewisse Abnutzung wird dadurch aufgefangen, daß die Kappe 19 eine bestimmte Größe aufweist und innerhalb der Kappe 19 weitere Diamantpartikel angeordnet sind, die während des Abnutziingsvorganges dann freigelegt werden und zur Wirkung kommen.In this state, the diamond particles only adhere imperfectly to the bristle ends 18, since until now these have only been embedded on the carrier material 21 with a relatively small layer thickness. The further embedding of the diamond particles takes place at home in a second electroplating bath, which can also be operated electrolytically or without current. In this bath, the diamond particles are now embedded in such a way that the inner abrasive particles are completely embedded in the carrier material 21, while the outer diamond particles are only embedded to such an extent that they are at most about 1/4 to 1/3 of their size from the carrier material 21 protrude. The time it takes for this embedding depends on the data of the electroplating bath. At the end of this process, the diamond particles are anchored within the carrier material 21 in such a way that they can be used as abrasives and have a very long service life. A certain amount of wear and tear is absorbed by the fact that the cap 19 has a certain size and further diamond particles are arranged within the cap 19, which are then exposed during the wear process and come into effect.

Es ist auch möglich, die freiliegenden Enden 18 der Borsten 12 nach dem Anätzen in einem besonderen Galvanobad vorab mit Trägermaterial 21 in Form einer dünnen Schicht zu versehen, also anzunickeln.It is also possible to provide the exposed ends 18 of the bristles 12 with a carrier material 21 in the form of a thin layer, that is to say nickel them, after they have been etched in a special electroplating bath.

Es ist ferner möglich, das vollständige Einbetten, nicht wie oben beschrieben in einem besonderen Galvanobad, sondern in dem Bad vorzunehmen, wo auch die Schleifmittelteilchen eingebracht werden. Werden weniger teuere Schleifmittelteilchen als Diamant verwendet, so ist es auch möglich, die Schleifmittelteilchen im Galvanobad als Sumpf vorzusehen und das betreffende Ende des Bürstenwerkzeuges 11 während des metallischen Abscheidungsvorganges darin eingetaucht zu lassen, so daß ein Verdrehen des Bürstenwerkzeuges 11 während dieses galvanischen Vorganges nicht notwendig ist.It is also possible to carry out the complete embedding, not as described above in a special electroplating bath, but in the bath where the abrasive particles are also introduced. If less expensive abrasive particles than diamond are used, it is also possible to provide the abrasive particles in the plating bath as a sump and to leave the relevant end of the brush tool 11 immersed therein during the metallic deposition process, so that twisting of the brush tool 11 during this galvanic process is not necessary is.

Sind die freien Enden 18 der Borsten 12 jeweils mit einer Kappe 19 versehen, so muß das Abdeckmaterial in Form des nichtleitenden Wachses bzw. sonstigen Materials wieder entfernt werden. Dazu wird der betreffende Teil des Bürstenwerkzeuges 11 auf die entsprechende Temperatur erwärmt, so daß das dann flüssige Wachs wieder aus der Bürste 11 heraustropfen kann. Dadurch ist in einfacher Weise das nichtleitende Abdeckmaterial wieder entfernt.If the free ends 18 of the bristles 12 are each provided with a cap 19, the covering material in the form of the non-conductive wax or other material must be removed again. For this purpose, the relevant part of the brush tool 11 is heated to the appropriate temperature, so that the liquid wax can then drip out of the brush 11 again. As a result, the non-conductive covering material is removed again in a simple manner.

Claims (6)

1. Method for studding the free ends of the bristles of metallic brush tools with particles of grinding material, with which the tool is provided with a covering whilst these portions which shall studded with the grinding material particles, are left free, and subsequently the partially covered tool is dipped into a galavanic bath, into which the grinding material particles have been introduced, and further subsequently a layer of preferably hard metallic carrier material is deposited, whilst at least a plurality of grinding material particles is partially embedded onto said portions of tool, which had been left free, by electrolytic or currentless galvanic metal deposition, and in which further subsequently the cover from the corresponding portion of the tool is moved, wherein at least the bristle carrying brush tool portion is filled with non-conducting material by dipping it into a non-conducting material, which solidifies within a certain ambient temperature range and which at a higher temperature is liquid, preferably viscous, and that thereafter the cover is again removed from said ends of the bristles, which shall be studded with grinding material particles.
2. Method in accordance to claim 1, characterized in that the brush of the brush tool is dipped into the heated non-conducting material and withdrawn thereafter, on wherein the material is made to solidify upon rotation of the brush tool, and wherein this process is repeated so long until the bristles of the brush tool are completely covered.
3. Method in accordance to claim 1 or 2, characterized in that the non-conducting material is a lacquer or wax.
4. Method in accordance to one of the preceding claims, characterized in that the brush tool is put onto a groove like carrier into the galvanic bath and diamond powder is uniformly distributed as a pasty mass upon the tool surface.
5. Method in accordance to claim 4, characterized in that the distribution of diamond powder on the surface of the brush tool is carried out in at least two steps, whereby the brush, after each step, in which diamond powder is brought on to it and the carrier material is galvanically deposited, is rotated.
6. Metallic brush tool produced in accordance to the method as described in one of the preceding claims, characterized in that the free ends (18) of the metallic bristles (12) galvanically are provided with caps (19), which comprise a hard metal as a carrier material (21), within which partially grinding material particles (22), preferably diamond particles, are embedded.
EP81106613A 1981-08-11 1981-08-26 Method of studding metallic brush tools, with particles of an abrasive, and metallic a brush tool, obtained by this method Expired EP0072374B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106613T ATE18441T1 (en) 1981-08-11 1981-08-26 PROCESS FOR LOADING METALLIC BRUSH TOOLS WITH ABRASIVE PARTICLES AND THEREFORE MANUFACTURED METALLIC BRUSH TOOL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3131641 1981-08-11
DE19813131641 DE3131641A1 (en) 1981-08-11 1981-08-11 METHOD FOR PUTTING METAL TOOLS, IN PARTICULAR BRUSH TOOLS WITH ABRASIVE PARTICLES, AND METAL TOOL PRODUCED THEREFOR, IN PARTICULAR BRUSH TOOL

Publications (2)

Publication Number Publication Date
EP0072374A1 EP0072374A1 (en) 1983-02-23
EP0072374B1 true EP0072374B1 (en) 1986-03-05

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Application Number Title Priority Date Filing Date
EP81106613A Expired EP0072374B1 (en) 1981-08-11 1981-08-26 Method of studding metallic brush tools, with particles of an abrasive, and metallic a brush tool, obtained by this method

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EP (1) EP0072374B1 (en)
JP (1) JPS5828468A (en)
AT (1) ATE18441T1 (en)
DE (2) DE3131641A1 (en)

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DE8330060U1 (en) * 1983-10-19 1984-02-23 Weiler Bürsten GmbH, 7801 Wolfenweiler BRUSH FOR SURFACE PROCESSING WITH WIRE BRUSHES
US4625355A (en) * 1983-12-21 1986-12-02 Earthnics Corporation Copper bit cleaner
DE8614687U1 (en) * 1986-05-30 1987-10-29 Kadia Maschinenbau Kopp Gmbh & Co, 7440 Nuertingen, De
DE3735266A1 (en) * 1987-10-17 1989-04-27 Nagel Masch Werkzeug Device and method for honing workpieces
JPH01264777A (en) * 1988-04-18 1989-10-23 Fsk Corp Wire brush and manufacture thereof
US5329730A (en) * 1989-09-20 1994-07-19 Jason, Inc. Abrasive finishing tool
US5158405A (en) * 1991-05-31 1992-10-27 John Serafin Deburring tool and method
DE4121839C2 (en) * 1991-07-02 2003-01-09 Werner Hermann Wera Werke Tool with torque transmitting work surfaces and method for manufacturing the same
DE4312017A1 (en) * 1993-04-13 1994-10-20 Artec Design & Entwicklungsges Bristle
DE19904944A1 (en) * 1999-02-06 2000-04-20 Bosch Gmbh Robert Oscillated and twisted de-burring tool, for rounding and polishing hole edges, includes spreading head and highly stressed inner edge of fuel injection nozzle
DE102017115540A1 (en) * 2017-07-11 2019-01-17 Gühring KG deburring

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AT162120B (en) * 1946-01-26 1949-01-25 Otto Dr Ing Scheid Process for the production of diamond abrasives.
US4079552A (en) * 1974-11-06 1978-03-21 Fletcher J Lawrence Diamond bonding process
US3957593A (en) * 1975-01-31 1976-05-18 Keene Corporation Method of forming an abrasive tool
JPS5245141A (en) * 1975-10-07 1977-04-09 Ohbayashigumi Ltd Method of building vibration-proof wall of high storey prefablicated m ansion building
AT358947B (en) * 1976-09-24 1980-10-10 Gen Electric CUTTING TOOL, ESPECIALLY GRINDING TOOL, AND METHOD FOR THE PRODUCTION THEREOF
JPS5358092A (en) * 1976-10-27 1978-05-25 Kanebo Ltd Manufacture for heigh collect bundled alkali endure glass fibre
JPS5491791U (en) * 1977-12-12 1979-06-28
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JPS55131478A (en) * 1979-03-28 1980-10-13 Inst Tech Precision Eng Cutting wire tool coated with particle of superhigh hardness and method of producing the same
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PL121916B1 (en) * 1979-08-25 1982-06-30 Przemyslu Narzedziowego Vis K Method of manufacturing abrasive tools with a metallic galvanic bindereskim gal'vanicheskim vjazhuhhim

Also Published As

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DE3131641A1 (en) 1983-03-03
DE3173978D1 (en) 1986-04-10
ATE18441T1 (en) 1986-03-15
JPS5828468A (en) 1983-02-19
EP0072374A1 (en) 1983-02-23
JPH0158027B2 (en) 1989-12-08

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