EP2403684B1 - Tourillon de meulage - Google Patents

Tourillon de meulage Download PDF

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Publication number
EP2403684B1
EP2403684B1 EP10705376.1A EP10705376A EP2403684B1 EP 2403684 B1 EP2403684 B1 EP 2403684B1 EP 10705376 A EP10705376 A EP 10705376A EP 2403684 B1 EP2403684 B1 EP 2403684B1
Authority
EP
European Patent Office
Prior art keywords
base body
abrasive particles
grinding
abrasive
metal
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.)
Revoked
Application number
EP10705376.1A
Other languages
German (de)
English (en)
Other versions
EP2403684A1 (fr
Inventor
Gerald Lichter
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.)
Rhodius Schleifwerkzeuge GmbH and Co KG
Original Assignee
Rhodius Schleifwerkzeuge GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42235322&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2403684(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhodius Schleifwerkzeuge GmbH and Co KG filed Critical Rhodius Schleifwerkzeuge GmbH and Co KG
Publication of EP2403684A1 publication Critical patent/EP2403684A1/fr
Application granted granted Critical
Publication of EP2403684B1 publication Critical patent/EP2403684B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece
    • 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
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • 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

Definitions

  • the invention relates to a method for producing a grinding pin for the machining of workpieces made of metal, in particular of cast metal, comprising a base body with an effective grinding on the outer surface grinding area for grinding the workpiece and having a shank for clamping the tool in the collet of a machine.
  • Abrasive pins for abrasive machining ie for more or less rough grinding of different materials, are known per se.
  • ceramic and synthetic resin-bonded grinding sticks are offered in different grain types, particle sizes and degrees of hardness.
  • Grinding pins of different geometric shapes and with different shaft geometries are also used in mold making or in foundries, wherein the overall geometry of the grinding pin is adapted to the conditions on the workpiece to be machined. Usually, these tools are clamped by means of their shank in the collet of freehand machines or in stationary machines.
  • the DE 94 18 876 U1 discloses a grinding pin for GRP machining. This has a shaft on the lateral surface of a diamond coating is applied. This is galvanically coated with a diamond grain and represents the actual working area of the tool.
  • the DE 84 25 852 U1 relates to a grinding pin for dental purposes.
  • a lateral surface is provided with an abrasive coating. It is a monolithic, arranged coaxially to the axis of the shaft and angularly pointed diamond used.
  • the DE 1 961 195 U1 relates to a manicure or pedicure device with electric drive.
  • a rotating pin is formed on its lateral surface so that you can use it to manipulate fingernails or toenails.
  • the pin is rotationally symmetrical.
  • the DE 39 18 606 A1 discloses a grinding tool with a carrier body, on the surface of which a grain layer is partially provided.
  • This contains abrasive grains of a hard material, wherein the grains are connected by a binder to the carrier body.
  • the abrasive grains interspersed with an active solder are first pressed into an annular compact. Subsequently, this compact is soldered onto the end face of the carrier body. The compression requires a complex pressing tool.
  • the GB 1 462 510 discloses a method of attaching diamond crystals to a metallic substrate without compression.
  • the diamond crystals are melted together with parts of a fused alloy on a metallic substrate and then the arrangement cooled down to secure the alloy together with the diamond particles firmly on the metallic substrate.
  • the object of the present invention is now to propose an improved method for producing the grinding pins.
  • the basic idea of the invention is to provide a main body made of metal for the grinding pins and to cover its surface with abrasive grains, this surface covering being held on the surface by cohesive joining.
  • BSL brazed single layer
  • the abrasive grains are held by soldering, in particular by melt soldering, on the outer shell of the body.
  • the BSL method has proven particularly useful when used as abrasive grains industrial diamonds.
  • cubic boron nitride (CBN) abrasive grains may also be used.
  • the abrasive grain is not completely integrated into the metal matrix as with sintered or laser-welded abrasives.
  • the diamond abrasive grains are instead clearly recognizable and correspondingly effective.
  • the Grinding pins according to the invention are therefore of particularly open-loop structure.
  • the grinding pins which have been processed according to the invention by means of BSL are distinguished by their special properties: a particularly outstanding feature is an increased service life of the grinding pins, which can be achieved due to the low wear and high cutting power. Compared to the known grinding pins life is many times higher. Another major advantage of the low wear is that the grinding pins can be used flexibly. Finally, it is not so much to be feared that the surfaces are worn unevenly by a non-flat edition.
  • the grinding pins according to the invention are characterized by a high edge stability.
  • the individual pin shapes such as approximated cylinders, cones, ellipsoids or combinations of these shapes, can thus be used more universally. Overall, these advantageous properties contribute to a high cost saving for the user. Depending on the grain size, the grinding pins can be used for roughing, finishing and fine grinding.
  • the base body and the shaft are integrally formed from metal.
  • the grinding pins according to the invention can be used for external grinding and internal grinding and for profile grinding, form grinding, surface grinding and cylindrical grinding.
  • the sanding pins can be produced in different degrees of hardness and used for various materials.
  • the straightness of hardness to be produced particularly advantageously lies in the range of the soft degree of hardness "K” and the hard degree of hardness "R” according to EN 12413.
  • the degree of hardness "K” is particularly well suited for universal use on surfaces of cast materials. This includes the cleaning of gray and ductile iron castings, as well as the sanding of blowholes on gray and nodular cast iron parts.
  • Abrasive pencils of hardness R are particularly suitable for robust use on edges of cast materials. They are characterized by high edge stability, a long service life and low tool wear. The peripheral speeds of the respective application and the respective hardness should be adjusted.
  • a particular idea of the invention is to use the grinding pins for grinding workpieces made of cast metal, in particular cast steel, gray cast iron or ductile iron.
  • the grinding pins can be clamped in a freehand machine or a stationary machine.
  • the grinding pins are suitable for finishing grinding or fine grinding workpieces made of cast metal, in particular cast steel, gray cast iron or nodular cast iron. This particular suitability of the present invention with BSL grinding pads for these materials has surprisingly resulted from experiments.
  • the application can be carried out by sprinkling the abrasive grains on the outer shell. If the geometry of the grinding area allows it, it is particularly easy to apply the abrasive grains by immersing the body in a bed of abrasive grains. In order to achieve special grinding properties and / or a particularly appealing design, the abrasive grains can be applied in a predetermined orientation, for example by means of a template, on the base body.
  • the grinding area provided with fixed abrasive grains is covered with a slurry containing the solder required for the BSL, a viscous substance ("slurry").
  • slurry refers to a substance in which the metallurgical binding matrix is mixed with in a suitable liquid.
  • At least the grinding area provided with fixed abrasive grains is subjected to a galvanic process by immersing it with the grinding pin as a cathode in a galvanic bath. Under applied stress, metallic precipitate originating from the anode is deposited, including the abrasive grains on the metallic grinding area.

Landscapes

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

Claims (10)

  1. Procédé de fabrication d'une tige abrasive pour l'usinage de pièces en métal, en particulier en fonte métallique,
    la tige abrasive présentant un corps de base doté d'une zone abrasive agissant sur l'enveloppe extérieure pour l'usinage par meulage de la pièce et un arbre pour monter l'outil dans la pince de serrage d'une machine,
    le corps de base étant fabriqué en métal, l'enveloppe extérieure du corps de base étant pourvue de grains abrasifs qui sont maintenus sur l'enveloppe extérieure par correspondance de matière,
    caractérisé en ce que
    le corps de base en métal est pourvu d'un promoteur d'adhérence dans la zone abrasive,
    des grains abrasifs, notamment des grains abrasifs en diamant ou CBN, sont appliqués et fixés sur l'enveloppe extérieure pourvue de promoteur d'adhérence et
    la zone abrasive pourvue de grains abrasifs fixés étant exposée à un processus qui établit une correspondance de matière entre les grains abrasifs et l'enveloppe extérieure,
    la zone abrasive pourvue de grains abrasifs fixés est recouverte d'un enduit contenant la brasure et que le corps de base est chauffé dans un four.
  2. Procédé selon la revendication 1,
    caractérisé en ce
    que les grains abrasifs sont maintenus par brasure, notamment par brasure par fusion, sur l'enveloppe extérieure.
  3. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que les grains abrasifs sont composés de grains en diamant ou CBN.
  4. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que les grains abrasifs sont appliqués en une couche par procédé de BSL (« brased single layer ») sur l'enveloppe extérieure.
  5. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que le corps de base a une forme sphérique ou conique ou cylindrique ou une combinaison de ces formes.
  6. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que le corps de base et l'arbre sont réalisés en un bloc.
  7. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que le corps de base est fritté dans le four.
  8. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que les grains abrasifs sont appliqués en une couche par procédé de dispersion sur l'enveloppe extérieure.
  9. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que les grains abrasifs sont appliqués en plongeant le corps de base dans du vrac.
  10. Procédé selon une des revendications précédentes,
    caractérisé en ce
    que les grains abrasifs sont appliqués suivant une orientation prédéfinie sur le corps de base.
EP10705376.1A 2009-03-06 2010-02-25 Tourillon de meulage Revoked EP2403684B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910011493 DE102009011493A1 (de) 2009-03-06 2009-03-06 Schleifstift
PCT/EP2010/052415 WO2010100073A1 (fr) 2009-03-06 2010-02-25 Tige de meulage

Publications (2)

Publication Number Publication Date
EP2403684A1 EP2403684A1 (fr) 2012-01-11
EP2403684B1 true EP2403684B1 (fr) 2014-04-23

Family

ID=42235322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10705376.1A Revoked EP2403684B1 (fr) 2009-03-06 2010-02-25 Tourillon de meulage

Country Status (3)

Country Link
EP (1) EP2403684B1 (fr)
DE (1) DE102009011493A1 (fr)
WO (1) WO2010100073A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013167666A2 (fr) * 2012-05-09 2013-11-14 The Blade Saver Company Limited Dispositif et ensemble d'aiguisage de lame de rasoir de sécurité
DE102013218233A1 (de) * 2013-05-02 2014-11-06 Bayerische Motoren Werke Aktiengesellschaft Drehendes Schleifwerkzeug
CN113714899A (zh) * 2021-08-23 2021-11-30 重庆市恒牛机械制造有限公司 制动泵壳体、制作方法及其生产设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1462510A (en) * 1973-08-14 1977-01-26 Abrasive Tech Inc Method of making abrasive tools

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901835A (en) * 1960-05-27 1962-07-25 Carborundum Co Method and means for dressing grinding wheels
DE1961195U (de) 1966-04-29 1967-06-01 Interelectric Ag Manikuer- bzw. pedikuergeraet.
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
DE8425852U1 (de) 1984-09-01 1984-11-22 Grob-Impetus AG, Neuhausen Schleifstift fuer zahnaerztliche zwecke
DE3638085A1 (de) * 1986-11-07 1988-05-19 Ex Cell O Gmbh Verfahren und werkzeug zum abrichten eines schleifstifts
CH675386A5 (fr) * 1988-07-27 1990-09-28 Alexander Beck
DE3912681A1 (de) * 1989-04-18 1990-10-25 Winter & Sohn Ernst Verfahren zum galvanischen beschichten von segmentflaechen, die auf der oberflaeche eines grundkoerpers angeordnet sind und danach hergestellte erzeugnisse
DE3937182A1 (de) * 1989-11-08 1991-05-16 Bosch Gmbh Robert Verfahren zur bearbeitung der oberflaeche von plankommutatoren
DE4215525C2 (de) * 1992-05-12 1995-01-12 Kapp Werkzeugmasch Verfahren zur Herstellung eines Schleifwerkzeugs
DE9418876U1 (de) 1994-11-24 1996-01-18 Maschinenfabrik Reinhausen Gmbh, 93059 Regensburg Schleifstift für GFK-Bearbeitung
US5855314A (en) * 1997-03-07 1999-01-05 Norton Company Abrasive tool containing coated superabrasive grain
US6039641A (en) * 1997-04-04 2000-03-21 Sung; Chien-Min Brazed diamond tools by infiltration
US5997597A (en) * 1998-02-24 1999-12-07 Norton Company Abrasive tool with knurled surface
DE102006017664A1 (de) * 2006-04-12 2007-10-18 Volkswagen Ag Verfahren und Vorrichtung zum Herstellen einer Form für Ur- und Umformwerkzeuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1462510A (en) * 1973-08-14 1977-01-26 Abrasive Tech Inc Method of making abrasive tools

Also Published As

Publication number Publication date
DE102009011493A1 (de) 2010-09-09
WO2010100073A1 (fr) 2010-09-10
EP2403684A1 (fr) 2012-01-11

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