EP0355732A2 - Meule de rectification - Google Patents

Meule de rectification Download PDF

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Publication number
EP0355732A2
EP0355732A2 EP89115251A EP89115251A EP0355732A2 EP 0355732 A2 EP0355732 A2 EP 0355732A2 EP 89115251 A EP89115251 A EP 89115251A EP 89115251 A EP89115251 A EP 89115251A EP 0355732 A2 EP0355732 A2 EP 0355732A2
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
wheel body
body according
reinforcement
side surfaces
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Withdrawn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
EP89115251A
Other languages
German (de)
English (en)
Other versions
EP0355732A3 (fr
Inventor
Hansjörg Dr. Renker
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.)
Fritz Studer AG
Original Assignee
Fritz Studer AG
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 Fritz Studer AG filed Critical Fritz Studer AG
Publication of EP0355732A2 publication Critical patent/EP0355732A2/fr
Publication of EP0355732A3 publication Critical patent/EP0355732A3/fr
Withdrawn legal-status Critical Current

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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
    • B24D5/04—Wheels in one piece with reinforcing means

Definitions

  • the invention relates to a grinding wheel body, preferably one with a ceramic or plastic bond.
  • super-hard cutting materials such as diamond or cubic boron nitride are added to the fillers in the surface layer that comes into contact with the workpiece.
  • the grinding wheel bodies produced in this way have proven themselves very well in practice, but are not suitable for extremely high speeds because of their relatively weak bond.
  • the extremely high speeds and the resulting cutting speeds are particularly economical for machining work with superhard cutting materials.
  • the stress on the material structure of the grinding wheel body by centrifugal forces is, however, often so high that it ruptures.
  • High-speed grinding wheels are also known, in which the wheel is fastened between flanges of higher strength in such a way that the stresses caused by centrifugal forces are transmitted to the flanges by means of thrust.
  • the stresses that occur can be transmitted from the washer to the flanges with positive locking or by means of a non-positive connection between a flange and washer.
  • the invention has for its object to provide a wheel concept which combines the advantages of the good grinding characteristics of grinding wheels with low mechanical strength with the ability to withstand speeds and correspondingly high peripheral speed and accordingly to ensure a high level of safety against the bursting of the grinding wheel body.
  • a radial force-absorbing reinforcement is attached to the side surfaces of the grinding wheel body in order to prevent the grinding wheel body from bursting by centrifugal forces.
  • the axial stresses caused by the axial clamping of the wheel are intercepted by a metal insert arranged centrally in the grinding wheel body.
  • the reinforcement can consist of metal as well as a fabric covering, such as aramid or carbon fiber.
  • the grinding wheel body (1) shown in FIG. 1, with the cutting layer (2) applied to the circumference, has a made of a material with high strength and high modulus of elasticity, in particular metal, for absorbing axially acting clamping forces use (3).
  • the flat side surfaces (4) of the grinding wheel body (1) are coated with several layers (5, 6, 7) of fiber fabric made of a material with a high modulus of elasticity by means of a binder.
  • the layers (5, 6, 7) of the fiber tissue absorb the strains of the grinding wheel base body (1) generated by the centrifugal forces during rotation and prevent the same from bursting.
  • the grinding wheel base body (8) shown in FIG. 2 with the cutting layer (9) applied to the circumference is also equipped with the insert / 10) for absorbing axially acting clamping forces.
  • the slightly conical side surfaces (11) are coated with several layers (12, 13, 14) of fiber fabric made of a material with a high modulus of elasticity. Due to this coating and the slightly conical side surfaces (11) of the grinding wheel base body (8), the strains generated during rotation can be absorbed both by frictional engagement and by positive locking.
  • the flat or conical side surfaces of the grinding bodies (1 or 8) are reinforced with a disk-shaped sheet metal plate which is pressed with the grinding body (1 or 8) and / or is glued by means of an interposed binder.
  • the sheet metal plate and / or the side surfaces (4; 11) can have a rough and / or a profiled surface, so that a good positive fit can be achieved by joining them together.
  • sheet metal plates can be provided in several layers (4, 5, 6 or 12, 13, 14) and with stepped outer diameters. As a rule, however, a sheet metal plate will suffice for reinforcement. Instead of sheet metal plates, metal plates produced in another way, for example turned, can also be provided as reinforcement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP19890115251 1988-08-24 1989-08-18 Meule de rectification Withdrawn EP0355732A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH313288A CH676942A5 (fr) 1988-08-24 1988-08-24
CH3132/88 1988-08-24

Publications (2)

Publication Number Publication Date
EP0355732A2 true EP0355732A2 (fr) 1990-02-28
EP0355732A3 EP0355732A3 (fr) 1990-12-05

Family

ID=4249308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890115251 Withdrawn EP0355732A3 (fr) 1988-08-24 1989-08-18 Meule de rectification

Country Status (2)

Country Link
EP (1) EP0355732A3 (fr)
CH (1) CH676942A5 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0451319A1 (fr) * 1990-03-31 1991-10-16 Ernst Winter & Sohn (Gmbh & Co.) Meule de rectification pour rectification à grande vitesse
US6840850B2 (en) * 2000-01-17 2005-01-11 Saint-Gobain Abrasifs Technologie Et Services Abrasive grindstone and method for making same
CN100377841C (zh) * 2002-05-27 2008-04-02 吴诺顿株式会社 研磨用砂轮
US20220088747A1 (en) * 2019-01-14 2022-03-24 Pferd Milwaukee Brush Company, Inc. Grinding disc and use of such a grinding disc

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE126474C (fr) *
US1982710A (en) * 1929-05-25 1934-12-04 Carborundum Co Reenforcement of high speed abrasive wheels
US4021209A (en) * 1975-07-23 1977-05-03 Federal-Mogul Corporation Aramid fiber reinforced abrasive wheel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0451319A1 (fr) * 1990-03-31 1991-10-16 Ernst Winter & Sohn (Gmbh & Co.) Meule de rectification pour rectification à grande vitesse
US6840850B2 (en) * 2000-01-17 2005-01-11 Saint-Gobain Abrasifs Technologie Et Services Abrasive grindstone and method for making same
CN100377841C (zh) * 2002-05-27 2008-04-02 吴诺顿株式会社 研磨用砂轮
US20220088747A1 (en) * 2019-01-14 2022-03-24 Pferd Milwaukee Brush Company, Inc. Grinding disc and use of such a grinding disc
US12528157B2 (en) * 2019-01-14 2026-01-20 Pferd Milwaukee Brush Company, Inc. Grinding disc and use of such a grinding disc

Also Published As

Publication number Publication date
EP0355732A3 (fr) 1990-12-05
CH676942A5 (fr) 1991-03-28

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