EP0393540B1 - Procédé de revêtement galvanique de segments de surface, qui sont situés sur la surface d'un objet et outil fabriqué selon ce procédé, en particulier meule de rectification - Google Patents

Procédé de revêtement galvanique de segments de surface, qui sont situés sur la surface d'un objet et outil fabriqué selon ce procédé, en particulier meule de rectification Download PDF

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Publication number
EP0393540B1
EP0393540B1 EP90107126A EP90107126A EP0393540B1 EP 0393540 B1 EP0393540 B1 EP 0393540B1 EP 90107126 A EP90107126 A EP 90107126A EP 90107126 A EP90107126 A EP 90107126A EP 0393540 B1 EP0393540 B1 EP 0393540B1
Authority
EP
European Patent Office
Prior art keywords
process according
segments
coated
basic body
surface segments
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 - Lifetime
Application number
EP90107126A
Other languages
German (de)
English (en)
Other versions
EP0393540A2 (fr
EP0393540A3 (fr
Inventor
Hans-Peter Benthin
Dieter Kühl
Willi Kunz
Ernst Jungclaus
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.)
Saint Gobain Diamantwerkzeuge GmbH and Co KG
Original Assignee
Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ernst Winter and Sohn Diamantwekzeuge GmbH and Co filed Critical Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
Publication of EP0393540A2 publication Critical patent/EP0393540A2/fr
Publication of EP0393540A3 publication Critical patent/EP0393540A3/fr
Application granted granted Critical
Publication of EP0393540B1 publication Critical patent/EP0393540B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas
    • C25D5/022—Electroplating of selected surface areas using masking means
    • 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
    • B24D18/0018—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by electrolytic deposition

Definitions

  • a galvanic application of metals or metallically bound substances on the surface of a base body is carried out for a wide variety of purposes. For example, it is customary to apply a metallic layer galvanically to a base body for protection against corrosion or to influence the surface roughness of the body or to provide protection against wear or to provide the base body, in particular a piece of jewelry, with a decoration. Furthermore, these methods are generally used in the production of grinding tools, in particular grinding wheels, in order to provide the surface of a base body with metal-bonded grinding grains.
  • both the coated segment surfaces and the uncoated open surfaces of the base body in terms of their shape, size and Distance should be constant.
  • Either the free surfaces or the coated segment surfaces can represent certain geometrical shapes such as circles, circular surfaces, rectangles, circular blanks or, for example, helical figures on cylindrical base bodies.
  • the metallic base body or the base body provided with a metallic coating is connected to an electrode and introduced into the galvanic bath, in which a second electrode is applied to the metallic material dispenser. If the circuit is closed, the galvanic layer from the donor metal is deposited on the surface of the metallic conductive base body. If only geometrically defined, that is to say limited, surface segments are to be coated, then the deposition-free surface segments must be covered. According to known methods, this is done, for example, by partially painting the base body or by introducing it into complicated shapes, in which the base body is partially covered in relation to the galvanic bath or, for example, by masking off those surface sections which are to remain free. However, these known methods are particularly expensive when relatively small, geometrically defined areas are provided both for a coating and as areas that remain free.
  • the object of the invention is to provide a method for coating the segment surfaces of a base body by means of electrodeposition, according to which extremely small segments and free spaces in a desired size and depth can be produced with little effort on curved surfaces.
  • the surface of the base body is first mechanically provided with a corrugation or knurling, which is coated with an insulating material such as a lacquer, and then exposed segment surfaces are created by removing the surface, the segment surfaces are galvanically coated and the one lying between the coated segment surfaces Insulating material is removed.
  • a base body made of an electrically conductive material such as aluminum can be deformed on its surface by rolling with a hard roller or the like in such a way that its surface has a corrugation which consists of intersecting grooves. If these are notch-shaped grooves running transversely to one another, the corrugation consists of pyramid-shaped bodies standing next to one another, which are particularly suitable for the production of grinding wheels for reasons which will be explained below.
  • the surface shaped in this way is then completely covered with an insulating material, which preferably consists of a synthetic resin lacquer such as acrylic resin, so that the base body only needs to be immersed. In this state, galvanic deposition on the surface of the base body would not be possible.
  • the surface of the base body to be coated is exposed by machining away the outer layer of paint until the surfaces to be coated become visible should be.
  • the depth of the later exposed spaces can be predetermined by a further removal by machining, if the segments have a circular or rectangular or square cross section, for example. If the corrugation or knurling has been carried out beforehand in such a way that the protruding segments have the shape of pyramids, the size of the segment surfaces to be coated can be determined by the extent of the removal of the base body, since they cut with progressive chip removal from the top of the pyramid to the bottom increases continuously as the depth of the gaps decreases. After the cutting process, the insulating material is initially left in the spaces so that the galvanic deposition of a metal or a metal with abrasive grains is then limited to the exposed, outer segment surfaces.
  • the spaces be cleaned by removing the insulating compound or the lacquer, for example by dissolving it or washing it.
  • a shape in the manner of a cylinder which in turn bears a corrugation, which already the manufacture of the base body is incorporated into its surface.
  • a multi-part cylindrical shape can be used, which is provided with a corrugation on its inside, the base body to be produced, for example, consisting of a core made of plastic, which carries a ring made of plastic and a metallic filler, which in the annular space between the core and Form is pressed in, so that using one and the same form is already provided with a corrugation during the manufacture of a base body and therefore requires no after-treatment.
  • the grinding wheel shown in part in FIG. 1 consists of a base body 1, which is provided on its peripheral surface with strip-shaped segments 2, which carry a galvanically deposited coating of abrasive grains with a metal bond such as nickel. Of this coating, the metallic coating is 8 and the abrasive grains are 9. Between Segments 2 are strip-shaped depressions 3 for the reception of chips and the supply and discharge of cooling water.
  • the exemplary embodiment according to FIG. 2 and the section corresponding to FIG. 3 show smaller segments 2 with a square cross-section and interstices or depressions 3.
  • These corrugations or knurls can also be produced by roller burnishing if the base body 1 is made, for example, of a relatively soft material such as There is aluminum in which the profile is pressed or pressed in with a hard roller.
  • the embodiment of a grinding wheel according to Figures 4 to 9 shows a corrugation 4, which is composed of pyramid-shaped bodies 5, which can also be produced by rolling with a hard roller from transverse grooves.
  • the corrugation 4 is coated with a lacquer 6 made of acrylic resin or another insulating material up to the tips of the pyramid-shaped bodies 5 after its production.
  • the outer lacquer layer 6 as well as the tips of the pyramid-shaped body 5 lying underneath can be removed by machining, so that segment-shaped exposed metal surfaces with a width "b" which are evenly distributed over the circumference are created for a subsequent one galvanic coating with a metal.
  • the extent of the width "b" is dependent on the extent of the removal and can therefore be predetermined. Accordingly, the depth "t" of the spaces for the reception of chips and coolant can be predetermined.
  • the segment faces 7 are coated with a metal such as nickel as a metallic coating 8 with abrasive grains 9 in the galvanic bath in accordance with the arrows 10 in the galvanic bath, which can consist of diamond.
  • a metal such as nickel as a metallic coating 8 with abrasive grains 9 in the galvanic bath in accordance with the arrows 10 in the galvanic bath, which can consist of diamond.
  • the lacquer 6 can then be removed to expose the intermediate spaces, so that a cross section according to FIG. 7 results.
  • a corrugation 4 can be formed on the base body 1 according to FIG. 10 using a preferably multi-part cylindrical shape 14 which is provided with a corrugation 15 on its inner wall.
  • a plastic core 12 of the base body is inserted into the mold and then a plastic is pressed into the space with a metal filler in the manner of a ring, so that the corrugation 15 is transferred to the base body 1 consisting of the parts 12 and 13 with the advantage that the base body for producing the corrugation is not needs to be reworked.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Adornments (AREA)

Claims (10)

  1. Procédé de revêtement galvanique de segments de surface qui sont situés sur la surface d'un corps de base, caractérisé en ce que la surface du corps de base (1) est tout d'abord pourvue d'un cannelage ou d'un moletage (3, 4), par voie mécanique, qui est revêtu d'une matière isolante (6) comme une laque et des segments de surface (7) mis à nu sont ensuite créés par enlèvement de copeaux de la surface, segments de surface qui sont revêtus d'un revêtement galvanique et que la matière isolante (6) qui se trouve entre les segments de surface (7) revêtus est ensuite enlevée.
  2. Procédé selon la revendication 1, caractérisé en ce que la surface est revêtue d'une laque à base de résine synthétique (6) telle que de la résine acrylique.
  3. Procédé selon la revendication 1, caractérisé en ce que le cannelage (4) est composé de corps en forme de pyramide (5).
  4. Procédé selon la revendication 1, caractérisé en ce que la couche appliquée par électrolyse (8) contient des grains abrasifs (9).
  5. Procédé selon la revendication 4, caractérisé en ce que la couche appliquée par électrolyse (8) contient des grains de diamant (9).
  6. Procédé selon la revendication 1, caractérisé en ce que le cannelage (4) est fabriqué par mise en place de la matière du corps de base (1) dans un moule cylindrique en plusieurs parties (14) dont la paroi intérieure est pourvue d'un cannelage (15) ou moletage.
  7. Procédé selon la revendication 1, caractérisé par l'utilisation d'un corps de base (1) dont le noyau (12) est constitué par une autre matière que sa bague extérieure (13).
  8. Procédé selon la revendication 1, caractérisé en ce que le noyau (12) est constitué par un métal ou une résine synthétique et la bague extérieure (13) par une résine synthétique avec une matière de remplissage métallique.
  9. Outil dont le corps de base porte des segments de surface sur sa surface métallique, caractérisé par un revêtement (8) des segments de surface (7) appliqué par électrolyse selon un procédé selon la revendication 1.
  10. Meule de rectification composée par un corps de base qui porte des segments de surface sur sa surface métallique, caractérisée par un revêtement (8) appliqué par électrolyse avec des grains abrasifs (9) sur les segments de surface (7) selon un procédé selon la revendication 1.
EP90107126A 1989-04-18 1990-04-13 Procédé de revêtement galvanique de segments de surface, qui sont situés sur la surface d'un objet et outil fabriqué selon ce procédé, en particulier meule de rectification Expired - Lifetime EP0393540B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912681A DE3912681A1 (de) 1989-04-18 1989-04-18 Verfahren zum galvanischen beschichten von segmentflaechen, die auf der oberflaeche eines grundkoerpers angeordnet sind und danach hergestellte erzeugnisse
DE3912681 1989-04-18

Publications (3)

Publication Number Publication Date
EP0393540A2 EP0393540A2 (fr) 1990-10-24
EP0393540A3 EP0393540A3 (fr) 1991-09-11
EP0393540B1 true EP0393540B1 (fr) 1992-11-25

Family

ID=6378909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90107126A Expired - Lifetime EP0393540B1 (fr) 1989-04-18 1990-04-13 Procédé de revêtement galvanique de segments de surface, qui sont situés sur la surface d'un objet et outil fabriqué selon ce procédé, en particulier meule de rectification

Country Status (2)

Country Link
EP (1) EP0393540B1 (fr)
DE (2) DE3912681A1 (fr)

Families Citing this family (19)

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DE4119872C2 (de) * 1991-06-17 1994-06-30 Kapp Werkzeugmasch Rotierendes Werkzeug zur spanabhebenden Bearbeitung von harten Werkstücken
DE4129486C1 (fr) * 1991-09-05 1992-09-17 Kapp & Co Werkzeugmaschinenfabrik, 8630 Coburg, De
DE4218412C2 (de) * 1992-06-04 1994-07-21 Jakob Lach Gmbh & Co Kg Verfahren zur Herstellung von Diamantschmuck
DE69519596T2 (de) * 1995-10-05 2001-07-19 Minnesota Mining & Mfg VORRICHTUNG ZUM RÄNDELN EINES WERSTüCKES, VERFAHREN ZUM GIESSEN EINES ARTIKELS MIT SOLCH EINEM WERKSTüCK UND SOLCH EIN GEGOSSENER ARTIKEL
US5975987A (en) * 1995-10-05 1999-11-02 3M Innovative Properties Company Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
DE19755061C2 (de) * 1996-12-19 2003-04-30 Continental Teves Ag & Co Ohg Verwendung eines Verfahrens zur Beschichtung und Bearbeitung bei einem Bremsenbauteil sowie zugehöriges Bremsenbauteil
DE29701940U1 (de) * 1997-02-04 1998-06-04 Heiberger, Ernst, 73072 Donzdorf Werkzeugscheibe zur spanabhebenden Bearbeitung weicherer Werkstoffe
US5946991A (en) 1997-09-03 1999-09-07 3M Innovative Properties Company Method for knurling a workpiece
US5997597A (en) * 1998-02-24 1999-12-07 Norton Company Abrasive tool with knurled surface
US6200360B1 (en) * 1998-04-13 2001-03-13 Toyoda Koki Kabushiki Kaisha Abrasive tool and the method of producing the same
TW503161B (en) * 2000-01-19 2002-09-21 Mitsubishi Materials Corportio Apparatus and method for making electro-depositted grinding stone
US6862898B2 (en) 2002-03-21 2005-03-08 Select Jewelry, Inc. Article of jewelry
US20030177753A1 (en) * 2002-03-21 2003-09-25 Ronen Seliktar Decorative, diamond-cut jewelry surface
DE102004042384A1 (de) * 2004-09-02 2006-03-09 Mtu Aero Engines Gmbh Schleifscheibe und Verfahren zur Herstellung derselben
DE102009011493A1 (de) * 2009-03-06 2010-09-09 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Schleifstift
CN103603019B (zh) * 2013-11-15 2016-07-06 沈阳黎明航空发动机(集团)有限责任公司 一种引入了脉冲电源的金刚石滚轮镀层的电镀方法
CN106591900B (zh) * 2016-11-30 2018-08-10 华侨大学 一种基于屏蔽层机械去除设备的电镀磨粒工具分段电镀方法
CN109773671B (zh) * 2017-12-05 2020-11-20 长沙理工大学 一种有序微槽结构多层超硬磨料电镀砂轮
CN112589696A (zh) * 2020-12-31 2021-04-02 东莞市森永精密磨具有限公司 一种复合型超硬磨具及其制备方法

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Also Published As

Publication number Publication date
DE59000498D1 (de) 1993-01-07
EP0393540A2 (fr) 1990-10-24
EP0393540A3 (fr) 1991-09-11
DE3912681A1 (de) 1990-10-25

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