EP0451509A1 - Dispositif abrasif - Google Patents

Dispositif abrasif Download PDF

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Publication number
EP0451509A1
EP0451509A1 EP91103599A EP91103599A EP0451509A1 EP 0451509 A1 EP0451509 A1 EP 0451509A1 EP 91103599 A EP91103599 A EP 91103599A EP 91103599 A EP91103599 A EP 91103599A EP 0451509 A1 EP0451509 A1 EP 0451509A1
Authority
EP
European Patent Office
Prior art keywords
abrasive body
grinding
wing tip
body according
wings
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.)
Granted
Application number
EP91103599A
Other languages
German (de)
English (en)
Other versions
EP0451509B1 (fr
Inventor
Günter Dr. Weis
Johann Pfister
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.)
D Swarovski KG
Original Assignee
D 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 D Swarovski KG filed Critical D Swarovski KG
Priority to AT91103599T priority Critical patent/ATE94110T1/de
Publication of EP0451509A1 publication Critical patent/EP0451509A1/fr
Application granted granted Critical
Publication of EP0451509B1 publication Critical patent/EP0451509B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
    • 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
    • B24D7/18—Wheels of special form
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S451/00—Abrading
    • Y10S451/921—Pad for lens shaping tool

Definitions

  • the invention relates to an abrasive body with a concave shaped grinding surface.
  • dome or hemispherical supports are usually used, on which numerous sintered grinding bodies, e.g. B. so-called diamond pellets.
  • these diamond pellets must be dressed, i.e. H. be ground to the exact concave shape, which is a very labor-intensive operation.
  • the invention has for its object to provide an abrasive body which can be applied to the carrier in a simple manner, which does not require expensive dressing, and which ensures an excellent grinding effect.
  • the invention is based on the knowledge that this object can be achieved by an abrasive body made of plastically deformable alloy with a particulate abrasive grain if the abrasive body is given a suitable shape.
  • the invention relates to an abrasive body with a concave-shaped grinding surface, wherein it has a plurality of vanes which are shaped with the wing tip bent in the running direction.
  • the curved shape of the wings results in a better grinding effect, while also protecting the Edges of the workpiece and a better coolant flow is guaranteed.
  • the curved wing shape leads to a better grinding pattern and better coolant ejection. This enables grinding under high pressure and high coolant consumption.
  • the grinding process is significantly improved by the better cooling. Due to the concave shaped grinding surface, the grinding body can be easily applied to appropriately shaped supports, for example ball end mills.
  • a plastically deformable alloy is selected as the material for the grinding wheel.
  • the grinding wheel can be easily adapted to any shape of a carrier under pressure.
  • the grinding body is formed in one piece. This facilitates the use of the grinding wheel.
  • the blades preferably have cooling water channels running from a central opening to the wing tip. This also improves cooling.
  • the cooling water channels preferably end in front of the wing tip in order to give the grinding body a closed and as stable a shape as possible.
  • the coolant is supplied in the usual way through a central bore in the carrier, which is aligned with the central bore in the grinding body, and is thus distributed uniformly in the coolant channels.
  • the wings In order to protect the workpiece, it is particularly advantageous to give the wings an essentially rounded shape, which is particularly true of those sections of the wing which first strike the workpiece.
  • the single figure shows a grinding wheel according to the invention.
  • the grinding wheel 1 has vanes 2. Cooling water channels 5 extend from a central opening 3 in the direction of the wing tips 8. The wings are curved in the running direction, in the illustrated case clockwise. Both the cooling water channels 5 arranged in the wings 2 and the wing gaps 4 widen outwards. The front wing end 6 is round, while the rear wing end 7 can be round or, as shown, somewhat angular. The grinding wheel can be used for both left and right rotation if the blades are bent in one direction or the other.
  • the alloy described in German Patent 35 35 695 is preferably used as the plastically deformable alloy. Reference is made in full to the disclosure of this patent specification.
  • the bronze alloy used according to the invention for the grinding wheel has a content, based on the alloy, of 70-98% by weight of Cu 3 - 30 wt% Ag 0-1% by weight of Si and 0.05 - 3 wt% Sn, Pb. Zn and / or Cd.
  • Diamond is primarily used as the abrasive grain.
  • the grain size can be selected within wide limits depending on the intended use, for example a D25 grain can be used.
  • the concentration of the abrasive grain in the alloy can also be very different, with suitable concentrations between C5 and C100.
  • the dimensions of the grinding wheel primarily depend on the dimensions of the workpiece.
  • the dimensions lie approximately in the following ranges: diameter of the grinding wheel 8 to 20 cm, diameter of the central opening 1 to 3 cm and number of wings 6 to 15.
  • the thickness of the grinding wheel is generally between 0.5 and 5 mm, preferably 2 to 3 mm.
  • the grinding wheels according to the invention are, for. B. used in metal spherical end mills. Compared to other possible materials, plastic, deformable materials have the additional advantage that the abrasive body formed from them adapts exactly to the shape of the spherical cap under pressure.
  • the grinding wheels are preferably glued into the calotte, for example with an epoxy resin adhesive.
  • a reversible attachment is also possible, for example with a hot melt adhesive, so that the grinding wheel can be loosened again in the heat and can be used on another carrier with a different radius under certain circumstances.
  • the grinding wheels are particularly suitable for grinding glass, but also ceramic materials and metals.
  • the grinding wheel according to the invention is characterized by improved cooling and improved grinding action. Due to its shape, it can be easily adapted to any carrier shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP91103599A 1990-04-12 1991-03-08 Dispositif abrasif Expired - Lifetime EP0451509B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91103599T ATE94110T1 (de) 1990-04-12 1991-03-08 Schleifkoerper.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011960A DE4011960A1 (de) 1990-04-12 1990-04-12 Schleifkoerper
DE4011960 1990-04-12

Publications (2)

Publication Number Publication Date
EP0451509A1 true EP0451509A1 (fr) 1991-10-16
EP0451509B1 EP0451509B1 (fr) 1993-09-08

Family

ID=6404348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103599A Expired - Lifetime EP0451509B1 (fr) 1990-04-12 1991-03-08 Dispositif abrasif

Country Status (8)

Country Link
US (1) US5287662A (fr)
EP (1) EP0451509B1 (fr)
JP (1) JP2831148B2 (fr)
AT (1) ATE94110T1 (fr)
DE (2) DE4011960A1 (fr)
ES (1) ES2044633T3 (fr)
FI (1) FI94732C (fr)
NO (1) NO910799L (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2109709T3 (es) * 1993-06-17 1998-01-16 Minnesota Mining & Mfg Articulos abrasivos con diseño y metodos de fabricacion y empleo de los mismos.
BR9612119A (pt) * 1995-12-07 1999-02-17 Bausch & Lomb Unidade monomérica composição de hidrogel lente de contato e método para produzir uma composição de hidrogel
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
US6736712B1 (en) * 1999-05-07 2004-05-18 Performance Abrasives Incorporated Rotary sanding disk
US6846223B2 (en) * 2000-12-09 2005-01-25 Saint-Gobain Abrasives Technology Company Abrasive wheels with workpiece vision feature
US20030143926A1 (en) * 2002-01-30 2003-07-31 Raffi Piliguian Grinding or polishing arrangement
JP3843933B2 (ja) * 2002-02-07 2006-11-08 ソニー株式会社 研磨パッド、研磨装置および研磨方法
DE102005010583A1 (de) * 2005-03-04 2006-09-07 Satisloh Gmbh Polierteller für ein Werkzeug zur Feinbearbeitung von optisch wirksamen Flächen an insbesondere Brillengläsern
USD559649S1 (en) * 2006-03-17 2008-01-15 Ehwa Diamond Industrial Co., Ltd. Grinding wheel shank
USD603884S1 (en) * 2009-03-20 2009-11-10 Michalec Ralph J Pad for grinding or polishing ophthalmic lenses
DE102010019491B4 (de) * 2010-04-30 2015-07-09 Carl Zeiss Vision International Gmbh Polierwerkzeug zur Bearbeitung von optischen Flächen, insbesondere Freiformflächen
DE102010029792A1 (de) * 2010-06-08 2011-12-08 Robert Bosch Gmbh Schleifwerkzeug für ein Schleifgerät mit Drehoszillationsantrieb
WO2015190189A1 (fr) * 2014-06-10 2015-12-17 オリンパス株式会社 Outil de meulage, procédé de meulage et dispositif de meulage
DE102017216033A1 (de) * 2017-09-12 2019-03-14 Carl Zeiss Smt Gmbh Verfahren zum Bearbeiten eines Werkstücks bei der Herstellung eines optischen Elements
US20250326081A1 (en) * 2024-04-22 2025-10-23 Michael Walach Lens polishing pad and apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001533A1 (fr) * 1979-11-30 1981-06-11 American Optical Corp Tampon de surfacage des lentilles
EP0217222A1 (fr) * 1985-10-04 1987-04-08 D. Swarovski & Co. Objets abrasifs frittés

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282650A (en) * 1941-05-01 1942-05-12 American Sandpaper Company Abrasive article
DE884005C (de) * 1951-12-28 1953-07-23 Stella Schleifscheibenwerke Ro Schleifwerkzeug mit gekuehlter Arbeitsflaeche
US2749681A (en) * 1952-12-31 1956-06-12 Stephen U Sohne A Grinding disc
US2828197A (en) * 1954-09-15 1958-03-25 Norton Co Metal bonded diamond wheels
DE1742705U (de) * 1956-08-16 1957-04-04 Wilhelm Blumberg & Co Ringfoermiger kunstschleifstein mit kuhlwasserberieselung.
FR1318689A (fr) * 1962-01-08 1963-02-22 Tolly Disque abrasif
US3186135A (en) * 1962-04-04 1965-06-01 Carborundum Co Abrasive disc
US3385010A (en) * 1966-03-25 1968-05-28 Norton Co Abrasive disc
US3583111A (en) * 1966-08-22 1971-06-08 David Volk Lens grinding apparatus
US3780476A (en) * 1972-08-08 1973-12-25 Gen Motors Corp Grinding wheel and mounting assembly
DD255903A1 (de) * 1986-11-10 1988-04-20 Textiltech Forsch Flexibler schleifkoerper und verfahren zu dessen herstellung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981001533A1 (fr) * 1979-11-30 1981-06-11 American Optical Corp Tampon de surfacage des lentilles
EP0217222A1 (fr) * 1985-10-04 1987-04-08 D. Swarovski & Co. Objets abrasifs frittés

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOURNAL OF OPTICS, vol. 15, no. 3, 05 Juni 1984, PARIS, FR; Seiten 119 - 132; J.P.MARIOGE: "LES METHODES DE FABRICATION DE SURFACES ASPHERIQUES" *

Also Published As

Publication number Publication date
FI94732C (fi) 1995-10-25
FI94732B (fi) 1995-07-14
JP2831148B2 (ja) 1998-12-02
DE4011960A1 (de) 1991-10-17
NO910799D0 (no) 1991-02-27
ES2044633T3 (es) 1994-01-01
JPH0796467A (ja) 1995-04-11
DE4011960C2 (fr) 1993-02-25
FI911039A0 (fi) 1991-03-01
DE59100353D1 (de) 1993-10-14
FI911039L (fi) 1991-10-13
EP0451509B1 (fr) 1993-09-08
US5287662A (en) 1994-02-22
ATE94110T1 (de) 1993-09-15
NO910799L (no) 1991-10-14

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