EP2043817B1 - Meule - Google Patents

Meule Download PDF

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Publication number
EP2043817B1
EP2043817B1 EP07784585A EP07784585A EP2043817B1 EP 2043817 B1 EP2043817 B1 EP 2043817B1 EP 07784585 A EP07784585 A EP 07784585A EP 07784585 A EP07784585 A EP 07784585A EP 2043817 B1 EP2043817 B1 EP 2043817B1
Authority
EP
European Patent Office
Prior art keywords
grinding
disc
slots
segments
carrier
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.)
Not-in-force
Application number
EP07784585A
Other languages
German (de)
English (en)
Other versions
EP2043817A1 (fr
Inventor
Franz Egger
Wolfgang Hassler
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.)
Tyrolit-Schleifmittelwerke Swarovski KG
Original Assignee
Tyrolit-Schleifmittelwerke Swarovski 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
Application filed by Tyrolit-Schleifmittelwerke Swarovski KG filed Critical Tyrolit-Schleifmittelwerke Swarovski KG
Publication of EP2043817A1 publication Critical patent/EP2043817A1/fr
Application granted granted Critical
Publication of EP2043817B1 publication Critical patent/EP2043817B1/fr
Not-in-force 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
    • 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
    • B24D7/06—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 with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports

Definitions

  • the invention relates to a grinding wheel comprising a carrier disk and grinding segments, wherein the carrier disk has a rear side for attachment to a grinding machine and a front side for processing the abrasive material, wherein the grinding segments are inserted in slots of the carrier disk (see WO 99/28088 A1 ).
  • the object of the present invention is to provide a generic grinding wheel which has a longer durability compared to conventional grinding wheels.
  • the abrasive segments protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disc and on the side facing away from the grinding direction of the carrier disc with the carrier disc inextricably connected, preferably soldered, particularly preferably welded, are.
  • the attachment between the carrier disc and the abrasive segments can be done very easily, the abrasive segments protrude axially parallel to the axis of rotation on the grinding wheel.
  • an insoluble (or non-detachable) attachment mechanisms come the known attachment mechanisms in question, in particular solder or Welded joints, wherein the choice of attachment depends on the carrier material and the abrasive segment material.
  • the shear force on the individual abrasive segments can be further reduced in the context of an additional improvement by the grinding wheel is designed such that the slots are arranged obliquely to the radius of the grinding wheel. Part of the forces acting on the abrasive segments forces is better delivered to the carrier disc.
  • the slots are open towards the periphery of the grinding wheel. This makes it easier to produce the grinding wheel, and it is also beneficial for the grinding process itself, when the abrasive segments are arranged in the outer part of the grinding wheel.
  • the grinding segments can be arranged at virtually any angle ⁇ from 0 ° to 90 ° to the radius of the grinding wheels, it is provided in an embodiment that the slots with the radius enclose an angle ⁇ different from 90 °, preferably an angle of about 25 ° ,
  • the carrier disc has recesses. Very efficiently, the dust could be removed if the recesses are elongated or drop-shaped.
  • the recesses include an angle different from 90 ° with the radius of the grinding wheel, preferably an angle of about 25 °.
  • the inclination compared to the circumference or radius is in a very similar range favorable as the inclination of the abrasive segments, ie at an angle between 0 ° and 90 °, preferably about 25 °, ie, the segments and recesses could be arranged in parallel.
  • the recesses should not be too large, which is why it has proven to be advantageous if the recesses taper to the axis of rotation of the grinding wheel.
  • the invention of course also has the task of providing a method for producing a grinding wheel.
  • slots are introduced into the carrier disk, then abrasive segments are inserted into the slots so that they protrude axially parallel to the axis of rotation of the grinding wheel in the grinding direction of the grinding wheel on the carrier disk, and that finally the grinding segments on the side facing away from the grinding direction with the carrier disk connected, preferably welded. It is envisaged that the abrasive segments are introduced into the slots so that they protrude only to the front of the grinding wheel on the grinding wheel.
  • Abrasive wheels according to the invention are generally used with hand-operated machines (for example angle grinders).
  • the grinding wheel may have a hub. All recesses and slots can be introduced, for example, with a laser.
  • Fig. 1b is now a view of the back of a grinding wheel 1 according to the invention recognizable.
  • the grinding wheel 1 comprises a carrier disk 2 and numerous grinding segments 3, which are inserted into slot-shaped recesses 4 of the carrier disk 2.
  • the abrasive segments 3 are permanently attached to the support plate 2, in the case shown by a weld 11 on one side of the slot 4.
  • the slots 4 are arranged obliquely to the radius R of the grinding wheel 1.
  • the slots are 4 for The circumference U of the grinding wheel 1 is open.
  • the abrasive segments 3 can thus be easily inserted laterally into the slots 4 of the carrier disc 2.
  • two abrasive segments 3 are arranged side by side in certain slots 4.
  • the slots 4 include the radius R a different angle of 90 ° ⁇ . In the illustrated embodiment, this angle ⁇ is about 25 °.
  • the angle ⁇ is to be measured so that on the one hand the radius R of the grinding wheel 1 is used, which just touches the end of the slot 4 located at the circumference U (first axis). Should the slot 4 not extend to the circumference (and / or be curved), the tangent at the outermost edge of the slot 4 is used and optionally extended to the extent U, so that the radius R is used, where the tangent intersects the circumference U.
  • the second axis forms the slot itself. For a curved (and / or non-open) slot 4, the tangent at the outermost point of the slot 4 is to be used as an axis.
  • the abrasive segments 3 protrude from the plane of the carrier plate 2. However, in this embodiment they only do so in the direction of the front side, ie in the direction of the grinding. On the back of the grinding segments 3 are approximately positively in the slots, so that abrasive segments 3 and carrier plates 2 can be easily connected to each other. In the exemplary embodiment shown, it is envisaged to produce a connection by means of a weld seam 11 on the rear side. For this it is necessary that the abrasive segments 3 and the carrier disc 2 are made of materials which are welded together.
  • abrasive segments 3 are used with so-called spacers 17. These spacers 17 on the one hand wear the abrasive and on the other hand are well welded to the carrier plate 2, as well as in Fig. 2 will be explained in more detail.
  • FIG. 2 Such a grinding segment 3 with intermediate piece 17 is shown in side view (left) and in cross section (right).
  • the Indian Fig. 2 The area designated by the reference numeral 15 represents the area of the abrasive segment 3 which comprises the abrasive.
  • the region 16 is a so-called neutral region, which consists essentially of the same material as the grinding region, but has (almost) no abrasive grain.
  • Such abrasive segments 3 with intermediate pieces 17 can be produced, for example, by sintering binder containing cutting agent being sintered onto the material forming the intermediate pieces 17, after which individual intermediate pieces 17 with sintered abrasive segments 3 are cut off or cut off. In order to save expensive cutting means, just in the area 16, the cutting means can be left out.
  • the abrasive segment 3 thus produced with intermediate piece 17 can now be inserted with the intermediate piece region 17 into the slots 4 and welded to the carrier disk 2 in the simplest case.
  • the intermediate piece 17 is only required if the abrasive segment 3 does not connect directly to the carrier plate 2, preferably can be welded. If the abrasive segments 3 can be connected to the carrier disk 2 anyway, the intermediate pieces 17 can be dispensed with.
  • the abrasive segment 3 could be made of 25CrMo4 or St 52 (and have abrasive area 15), while the carrier disk could be 48CrMoV67 steel.
  • the intermediate pieces 17 consist of a steel with a carbon content of less than 0.35% or a carbon equivalent of less than 0.75%, in particular St 52 or 25CrMo 4, good weldability of spacers 17 and carrier disk 2 is ensured.
  • a coating could be applied to the abrasive segment 3.
  • Such a coating could consist, for example, of SnZnCo, CoSnZn and / or matt nickel.
  • the abrasive segments 3 have a length of 10 mm, are approximately square and flat.
  • the grinding wheel 1 described here is approximately circular and has round recesses 19 on the edge of the carrier disk 2, so that the grinding segments 3 are free. This allows processing of corners of a material to be sanded.
  • Other shapes for the grinding wheel are equally conceivable (for example, grinding discs and cup grinding wheels are mentioned here by way of example).

Landscapes

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

Claims (15)

  1. Meule (1) comprenant un disque de support (2) et des segments de meule (3), le disque de support (2) présentant un côté arrière pour la fixation sur une meuleuse et un côté avant pour l'usinage du produit à meuler, les segments de meule (3) étant insérés dans des fentes (4) du disque de support (2), caractérisée en ce que les fentes (4) s'étendent du côté arrière au côté avant du disque de support (2), les segments de meule (3) étant reliés, de préférence soudés ou brasés au côté arrière du disque de support (2) de manière inamovible et les segments de meule (3) dépassant uniquement dans un sens parallèle à l'axe de rotation (D) du côté avant de la meule (1).
  2. Meule selon la revendication 1, caractérisée en ce que les fentes (4) sont disposées en biais par rapport au rayon (R) de la meule (1).
  3. Meule selon la revendication 1 ou 2, caractérisée en ce que les fentes (4) sont ouvertes vers la périphérie (U) de la meule (1).
  4. Meule selon la revendication 2 ou 3, caractérisée en ce que les fentes (4) forment avec le rayon (R) un angle a différent de 90°, de préférence un angle d'environ 25°.
  5. Meule selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les fentes (4) présentent des contre-dépouilles (5).
  6. Meule selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le disque de support (2) présente des évidements (6).
  7. Meule selon la revendication 6, caractérisée en ce que les évidements (6) sont oblongs ou en forme de goutte.
  8. Meule selon la revendication 7, caractérisée en ce que les évidements (6) forment un angle différent de 90° avec le rayon (R) de la meule (1), de préférence un angle d'environ 25°.
  9. Meule selon la revendication 7 ou 8, caractérisée en ce que les évidements (6) se rétrécissent vers l'axe de rotation (D) de la meule (1).
  10. Procédé de fabrication d'une meule (1) avec un côté arrière pour la fixation sur une meuleuse et un côté avant pour l'usinage du produit à meuler, comprenant un disque de support (2) et des segments de meule (3), en particulier selon l'une quelconque des revendications 1 à 9, caractérisé en ce que dans le disque de support (2) sont introduites des fentes (4), qui s'étendent du côté arrière au côté avant du disque de support (2), puis des segments de meule (3) sont insérés dans les fentes (4) de sorte qu'ils dépassent de manière parallèle à l'axe de rotation (D) de la meule (1) uniquement dans un sens parallèle à l'axe de rotation (D) du côté avant de la meule (1) et en ce que finalement, les segments de meule (3) sont reliés, de préférence soudés, de manière inamovible au côté arrière du disque de support (2).
  11. Procédé selon la revendication 10, caractérisé en ce que les segments de meule (3) sont introduits dans les fentes (4) de telle manière qu'ils dépassent du disque de support (2) uniquement dans le sens de meulage de la meule (1).
  12. Procédé selon l'une quelconque des revendications 10 ou 11, caractérisé en ce qu'un évidement (7) central est introduit le long de l'axe de rotation (D).
  13. Procédé selon la revendication 12, caractérisé en ce qu'un moyeu (8) est introduit dans l'évidement central (7) pour la fixation de la meule (1) sur une meuleuse.
  14. Procédé selon l'une quelconque des revendications 10 à 13, caractérisé en ce que les évidements (5, 6, 7) et/ou les fentes (4) sont exécutées à l'aide d'un laser.
  15. Procédé selon la revendication 14, caractérisé en ce que le moyeu (8) est soudé au disque de support (2), de préférence par soudage au laser.
EP07784585A 2006-07-25 2007-07-20 Meule Not-in-force EP2043817B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0126106A AT503981B1 (de) 2006-07-25 2006-07-25 Schleifscheibe
PCT/AT2007/000354 WO2008011646A1 (fr) 2006-07-25 2007-07-20 Meule

Publications (2)

Publication Number Publication Date
EP2043817A1 EP2043817A1 (fr) 2009-04-08
EP2043817B1 true EP2043817B1 (fr) 2010-11-24

Family

ID=38626919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07784585A Not-in-force EP2043817B1 (fr) 2006-07-25 2007-07-20 Meule

Country Status (5)

Country Link
EP (1) EP2043817B1 (fr)
AT (2) AT503981B1 (fr)
DE (1) DE502007005773D1 (fr)
ES (1) ES2356853T3 (fr)
WO (1) WO2008011646A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011095915A1 (fr) 2010-02-03 2011-08-11 Koninklijke Philips Electronics N.V. Del à conversion par un luminophore

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1060405A (en) * 1964-05-25 1967-03-01 Impregnated Diamond Prod Ltd Improvements in diamond impregnated tools
US3517463A (en) * 1968-03-06 1970-06-30 Super Cut Rotary segmental saw with drycutting characteristics
DE3802340A1 (de) * 1988-01-27 1989-08-10 Philipp Persch Nachf Inh Fritz Trennscheibe
US6196911B1 (en) * 1997-12-04 2001-03-06 3M Innovative Properties Company Tools with abrasive segments
KR100314287B1 (ko) * 1999-07-29 2001-11-23 김세광 연마 휠
ATE230327T1 (de) * 1999-10-14 2003-01-15 Carbodiam S A Herstellungsverfahren einer schleifscheibe
JP2001205560A (ja) * 2000-01-28 2001-07-31 Disco Abrasive Syst Ltd 研削ホイール及び該研削ホイールの製造方法
KR100492854B1 (ko) * 2004-09-15 2005-06-02 세원테크 주식회사 연마 휠

Also Published As

Publication number Publication date
AT503981B1 (de) 2008-12-15
DE502007005773D1 (de) 2011-01-05
EP2043817A1 (fr) 2009-04-08
ATE489200T1 (de) 2010-12-15
WO2008011646A1 (fr) 2008-01-31
AT503981A1 (de) 2008-02-15
ES2356853T3 (es) 2011-04-13

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