EP0876877A2 - Elément abrasif - Google Patents

Elément abrasif Download PDF

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Publication number
EP0876877A2
EP0876877A2 EP98108330A EP98108330A EP0876877A2 EP 0876877 A2 EP0876877 A2 EP 0876877A2 EP 98108330 A EP98108330 A EP 98108330A EP 98108330 A EP98108330 A EP 98108330A EP 0876877 A2 EP0876877 A2 EP 0876877A2
Authority
EP
European Patent Office
Prior art keywords
grinding
body according
grooves
abrasive body
annular gap
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.)
Withdrawn
Application number
EP98108330A
Other languages
German (de)
English (en)
Other versions
EP0876877A3 (fr
Inventor
Franz Pietsch
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.)
LIPPERT-UNIPOL GMBH
Original Assignee
Heinrich Lippert GmbH
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 Heinrich Lippert GmbH filed Critical Heinrich Lippert GmbH
Publication of EP0876877A2 publication Critical patent/EP0876877A2/fr
Publication of EP0876877A3 publication Critical patent/EP0876877A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • 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
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • 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
    • B24D7/10—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 cooling provisions

Definitions

  • the invention relates to a grinding wheel for the Surface treatment of metal workpieces and the like, channels for the The supply of a coolant opens.
  • Such grinding tools are used, for example, for the Grinding blade-shaped parts, such as knives and scissors, as well surgical instruments and tools used.
  • a rational grinding of such parts requires a sufficient amount large material removal, which is due to the highest possible Cutting ability of the grinding tool is achievable.
  • the large material removal and the work to be done Cutting work can lead to overheating, which can in tarnishing colors or structural changes in the workpiece to make noticable.
  • a measure to reduce the unwanted burning tendency is the introduction of a coolant to the grinding point by means of holes integrated in the grinding wheel, as proposed in DE 296 04 423 U1.
  • abrasive grain and binder will be used when the setting is tough Mixing complicates and fails when large-scale grinding agglomerates are used.
  • the supply of the channels with flowing cooling water is problematic or too expensive and is not solved at all in blind holes.
  • From DE-B-0 226 842 is a grinding wheel made of emery, corundum, Carborundum or the like with spaces on the grinding surface known, the grinding wheel made of individual thinner Slices is composed, in which cutouts located that are offset from each other so that they are oblique running, zigzag or similar cutouts form. This should always protrude during the grinding process Attack edges remain. Through the interrupted cut such a grinding wheel should be compared to a full wheel achieve a higher grinding effect.
  • the one with certain Arrangement of the individual discs formed channels are blind holes, which are not suitable for cooling liquid promote.
  • From DE-A-2 851 737 is a coolable with a cooling medium Grinding wheel with one arranged in the edge of the wheel circumferential slot known through which from the inside under the Effect of the centrifugal force the cooling medium is introduced.
  • the grinding wheel should be improved in that Structure and manufacturing options significantly simplified are.
  • the surface faces the horizontal arranged grinding wheel on a circumferential recess, which have holes with the circumferential slot in the edge of the Grinding wheel is connected.
  • the cooling channels run essentially only in the support bodies of the grinding zones, and not in this itself.
  • the object of the invention is a grinding wheel of the beginning to propose the type mentioned, which is easy to manufacture enables effective cooling of the grinding zones.
  • This task is the beginning of a grinding wheel mentioned type solved, for example, that the grinding surfaces of at least two separately made and after joined grinding zones with at least one of the Grooves provided for joining surfaces of the grinding zones are.
  • Such grooves are relatively easy to manufacture and they form when joining the two grinding zones inevitably closed, over the entire length of the Continuous channels through grinding zones, which extend into the front Grinding surfaces are sufficient and their dimensioning, Geometry and number according to the process requirements Amount of cooling water can be determined. Because of the invention the coolant flow remains unchanged, even if that Tool gradually worn down to a small remnant is.
  • the grooves can each form a channel for themselves. It is but also possible that the grooves of one joint surface together with opposite grooves of the adjacent other joint surfaces each form channels together.
  • the channels are preferably to simplify production and improve the function with a common supply channel connected for the coolant.
  • a relatively large removal of material creates a relatively rough one Material surface, which is often contrary to one low functional or aesthetic reasons Roughing depth stands.
  • Roughing depth stands.
  • the grinding zones can also, as from DE 29 31 695 B2 known per se, from concentric to a common axis rotatable rings with end-face grinding surfaces formed be.
  • the grooves are over the inner circumferential surface of the outer one Ring and / or the outer peripheral surface of the inner ring distributed.
  • the supply channel for the coolant is in the case of Formation of the grinding zones as rings, preferably from one formed by the rings released annular gap, from which the individual channels go out and into the grinding surface run. In this way, the coolant is rotated of the annular grinding wheel down to the grinding surfaces guided.
  • the annular gap can be easily manufactured in terms of manufacturing technology Shortening an inner ring compared to an outer ring be educated. In this way, the annular gap has one greatest possible distance from the grinding surfaces, so that the Channels for the coolant along the entire length of the wall of the annular grinding wheel.
  • the annular gap is preferably between the clamping end of the inner Ring and the clamping flange, while the outer ring on the the end opposite the grinding surface is sealed abuts the mounting flange.
  • the annular gap to the interior of the inner ring open for the supply of coolant, so that this on simple way, for example by means of a tube or Hose injected into the interior of the inner ring can be.
  • the cooling liquid due to the rotation in and out of the annular gap the axially parallel channels driven so that the coolant reliable down to the grinding gap between the grinding surface and workpiece is conveyed.
  • This effect can be further improved in that Area of the annular gap on the inner peripheral surface of the outer Ring, possibly in continuation of the inside circumferential surface of the outer ring in the joining area already provided grooves, in essential axially parallel grooves are provided.
  • the grinding wheel can be manufactured, for example, using cylindrical, cuboid or otherwise shaped large-scale grinding agglomerates with a cross section of up to 80 mm 2 and a length of up to 15 mm.
  • the grinding wheels for the surface treatment of workpieces 1 to 4 and 6 each consist of two grinding rings 1 and 2 designed as rings 16 with end faces if necessary, slightly beveled inwards, one inside the other merging grinding surfaces 7, 7 '.
  • the grinding zones 1, 2 are due to different abrasive grains and / or abrasive agglomerates with different grinding characteristics as well different bond matrix, hardness and porosity produced and then together at their joining surfaces 11, 12 glued.
  • the rings 16, with or without molded grooves 15 can be cast, for example, where, as shown, the grooves 15 for reasons of rational mold production and demolding preferably the inner joining surface 12 of the outer grinding zone ring 2, 16 are located.
  • the grooves 15 can instead or additionally in the outer joining surface 11 of the inner grinding zone ring 1, 16 are located according to FIG. 3 offset to the grooves 15 of the outer grinding zone ring 2, 16, so that the individual Grooves 15 each form channels 4 for the coolant, or as shown in FIG. 4 so that the outer and inner grooves 15th each form a channel 4 together.
  • the axially parallel channels 4 begin in a Annular gap 18 formed supply channel 6 for the Coolant.
  • the annular gap 18 is formed in that the inner grinding zone ring 1, 16 at a distance from the mounting surface 19 of the mounting flange 5 ends while the outer Grinding zone ring 2, 16 sealing on the mounting surface 19 abuts and via an outer peripheral flange 20 in one corresponding circumferential groove 21 of the mounting flange 5 is held is. Because of this, the annular gap 18 to the interior 17 of the innermost grinding zone ring 2, 16 open. For example 6, a liquid coolant jet via a tube 22 8 are directed into the interior 17.
  • Cooling liquid promoted the better in the grinding gap 9 the faster the ring-shaped grinding wheel turns around its Axis A rotates; i.e. the coolant supply increases with increasing Grinding performance and thus increasing risk of overheating improved.
EP98108330A 1997-05-07 1998-05-07 Elément abrasif Withdrawn EP0876877A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29708235U 1997-05-07
DE29708235U DE29708235U1 (de) 1997-05-07 1997-05-07 Schleifkörper

Publications (2)

Publication Number Publication Date
EP0876877A2 true EP0876877A2 (fr) 1998-11-11
EP0876877A3 EP0876877A3 (fr) 2001-08-29

Family

ID=8040088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108330A Withdrawn EP0876877A3 (fr) 1997-05-07 1998-05-07 Elément abrasif

Country Status (2)

Country Link
EP (1) EP0876877A3 (fr)
DE (1) DE29708235U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10141330C1 (de) * 2001-08-28 2003-03-13 Bruno Schmitz Schleifmittelwer Schleifkörper
US6966826B2 (en) 2001-07-04 2005-11-22 Disco Corporation Grinding wheel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE863608C (de) * 1951-01-31 1953-01-19 Erwin Krusius Verfahren zur schleifenden Bearbeitung, insbesondere von Messerschmiedewaren
GB935030A (en) * 1959-01-26 1963-08-28 Super Cut Abrasive diamond core drill
GB1085242A (en) * 1964-06-30 1967-09-27 Engelhard Hanovia Inc Surfacing of materials
DE2802081A1 (de) * 1977-01-18 1978-07-20 Daichiku Co Ltd Laminiertes, rotierendes schleifwerkzeug und verfahren zu seiner herstellung
FR2704473A3 (fr) * 1993-04-26 1994-11-04 Camfart Srl Meule abrasive à trous d'aération.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226842C (fr) *
DE2851737A1 (de) * 1978-11-30 1980-07-10 Ver Glaswerke Gmbh Gekuehlte schleifscheibe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE863608C (de) * 1951-01-31 1953-01-19 Erwin Krusius Verfahren zur schleifenden Bearbeitung, insbesondere von Messerschmiedewaren
GB935030A (en) * 1959-01-26 1963-08-28 Super Cut Abrasive diamond core drill
GB1085242A (en) * 1964-06-30 1967-09-27 Engelhard Hanovia Inc Surfacing of materials
DE2802081A1 (de) * 1977-01-18 1978-07-20 Daichiku Co Ltd Laminiertes, rotierendes schleifwerkzeug und verfahren zu seiner herstellung
FR2704473A3 (fr) * 1993-04-26 1994-11-04 Camfart Srl Meule abrasive à trous d'aération.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6966826B2 (en) 2001-07-04 2005-11-22 Disco Corporation Grinding wheel
SG119140A1 (en) * 2001-07-04 2006-02-28 Disco Corp Grinding wheel
DE10141330C1 (de) * 2001-08-28 2003-03-13 Bruno Schmitz Schleifmittelwer Schleifkörper

Also Published As

Publication number Publication date
EP0876877A3 (fr) 2001-08-29
DE29708235U1 (de) 1997-09-11

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