EP0326703A1 - Vorrichtung zum Rund- und/oder Profilschleifen - Google Patents

Vorrichtung zum Rund- und/oder Profilschleifen Download PDF

Info

Publication number
EP0326703A1
EP0326703A1 EP88121356A EP88121356A EP0326703A1 EP 0326703 A1 EP0326703 A1 EP 0326703A1 EP 88121356 A EP88121356 A EP 88121356A EP 88121356 A EP88121356 A EP 88121356A EP 0326703 A1 EP0326703 A1 EP 0326703A1
Authority
EP
European Patent Office
Prior art keywords
rotation
grinding
grinding tool
axis
workpiece
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Withdrawn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
EP88121356A
Other languages
German (de)
English (en)
French (fr)
Inventor
H.J. Dr. Renker
P. Dipl.-Ing. Wyler
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 EP0326703A1 publication Critical patent/EP0326703A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/003—Other grinding machines or devices using a tool turning around the work-piece

Definitions

  • the invention relates to a device for cylindrical and / or profile grinding with a receptacle for a workpiece and with a tool that can be driven to rotate and has a grinding surface.
  • grinding tools in the form of disks are used, which are provided with an abrasive coating on their outer circumference.
  • Such devices make it possible to grind workpieces round and / or to grind profiles, for example in the form of recesses with radial or conical shoulders. If you want to grind left and right shoulders on a workpiece, it is usually necessary to reclamp the workpiece. Such reclamping often includes the risk of inaccuracy.
  • the invention has for its object to design a device of the type mentioned so that the grinding process can be rationalized.
  • the grinding tool is designed as a ring which is provided on its inner circumference with the grinding coating.
  • the grinding pad is supported against the centrifugal forces by means of the inner circumference of the ring, so that the centrifugal forces acting on the grinding pad practically no longer represent a limitation for the amount of the grinding speed. It is only necessary to ensure that the ring-shaped grinding tool itself and its holding elements withstand the centrifugal forces which occur at high speeds.
  • the annular grinding tool is held in an annular holder which is rotatably mounted and is connected to a rotary drive.
  • the annular holder is designed as a rotor of an electric motor. This enables a space-saving arrangement to be realized.
  • annular holder is mounted by means of a gas bearing.
  • gas storage allows very high speeds without significant wear and tear.
  • the holder for the grinding tool which also rotates, is exposed to the same high centrifugal forces, so that it must be designed accordingly for very high speeds.
  • the ring-shaped holder is designed as a composite body which has a base body made of metal and a reinforcement surrounding the grinding tool.
  • the main body made of metal essentially has the task of ensuring the dimensional stability, while the reinforcement surrounding it should absorb the forces occurring at extremely high speeds of 10,000 rpm and more.
  • the reinforcement is formed from fibers running in the circumferential direction, which are embedded in a matrix made of plastic.
  • Suitable for this are carbon fibers or filaments known under the trade name "Keflar", which are impregnated with plastic and wrapped around the base body. It is provided that the fibers of these reinforcements are aligned unidirectionally in the circumferential direction, so that particularly high strengths are obtained in the circumferential direction.
  • the device shown only very schematically in FIG. 1 has a chuck (10), in which a workpiece (11) is clamped, which in its central area, which has a smaller diameter, is to be grinded, which is then to be grinded on both sides by a likewise Shoulder is limited.
  • the chuck (10) is provided in a manner not shown with a rotary drive and also a feed drive, as is common in grinding machines. When grinding, the workpiece rotates about its axis (15).
  • the grinding work is carried out by means of a grinding tool (13) which is in the form of a ring which is driven to rotate about an axis of rotation (14), namely in the opposite direction to the rotation of the workpiece (11).
  • the annular grinding tool has an abrasive coating on its inner circumference, as will be explained later with reference to FIG. 3.
  • the grinding tool (13) is clamped in a holder (16) which also has an annular shape.
  • This holder (16) is mounted in a stationary component (25) and driven to rotate in a manner not shown.
  • a whorl could be attached to the holder (16), for example, by means of which the holder (16) with the grinding tool (13) is driven by means of a belt could.
  • the axis of rotation (14) of the grinding tool (13) lies with the axis of rotation (15) of the chuck (10) and thus of the tool (11) in a common plane (Fig. 2).
  • Fig. 1 As the view perpendicular to this plane (Fig. 1) shows, the two rotas tion axes (14, 15) arranged inclined to each other within this common plane. The angle of inclination is between 5 ° and 10 °.
  • the stationary receptacle (25), in which the holder (16) is mounted, is held by means of a support, which enables an adjustment transverse to the axis of rotation (14) and possibly also in the longitudinal direction of the axis of rotation (14).
  • the receptacle (25) so as to be pivotable and adjustable about an axis perpendicular to the axis of rotation (14), so that the angle of inclination between the axes of rotation (14 and 15) of the tool (13) and the workpiece ( 11) can be set.
  • the receptacle (25) it is also possible to provide other types of clamping and driving for a workpiece, taking into account all possibilities that are known and possible with grinding machines.
  • the Hal ter (16) is designed as a rotor of an electric motor, so that a direct drive is obtained.
  • the receptacle (25) can then be designed as the associated stator. If necessary, a separate stator can also be provided, so that the mounting of the holder (16) is separated from the stator. 3 and 4, an embodiment is shown in which the holder (16) of an annular grinding tool (13) is designed as a rotor of an electric motor.
  • the diameter of the grinding tool (13) in the area of its grinding surface (12) can be approximately 380 mm and the outer diameter of the holder (16) can be approximately 600 mm.
  • the workpiece diameter should not exceed about 3/4 of the inside diameter of the ring-shaped grinding tool (13).
  • the holder (16) is provided with permanent magnets (24), to which corresponding windings of the stator (21), which is only indicated, are assigned.
  • the holder (16) is mounted inside the stator (21) by means of a gas bearing, which is only indicated schematically in FIG. 3.
  • the holder (16) is provided with corresponding axial and radial bearing surfaces, to which only schematically indicated openings (26) of the stator (21) are assigned, via which a gas, in particular air, is supplied under excess pressure.
  • the holder (16) is designed as a composite body. It consists of a base body (22) made of a metal, in particular aluminum or an aluminum alloy, ie of a material which has a relatively favorable ratio of strength to specific weight.
  • the base body (22) is provided with axial bores lying on a circular ring, into which the permanent magnets (24) are inserted. To be sufficient To maintain strength, the base body (22) is still surrounded by a reinforcement (23).
  • This reinforcement (23) consists essentially of unidirectional fibers, in particular carbon fibers, which are wound around the base body (22) and embedded in a plastic matrix.
  • a plastic matrix for example, the material sold by the company Ciba-Geigy, CH-Basel, under the name CFK T 300, which is soaked in plastic, for example in epoxy, and which is wound up in multiple layers on the base body (22) in the form of threads can be used on which it hardens.
  • the outer surfaces of this reinforcement (23) are ground so that they form the bearing surfaces for the gas storage.
  • the proportion of fiber material in the reinforcement (22) is about 80%, while the plastic matrix makes up only about 20%.
  • the grinding tool (13) shown in Fig. 3 consists of a metal ring, for example an aluminum ring, the cross section of which widens trapezoidally toward the inner circumference over approximately 1/3 of its radial length.
  • a grinding surface (12) is attached to the inner circumference.
  • the grinding tool (13) can roughly correspond to the cross section of a conventional grinding wheel, ie, however, in the reverse order with respect to the radial direction.
  • the grinding tool (13) rests on a radial clamping surface (20) of the base body (22), on which it is held by means of filler pieces (17, 18) and egg Nes clamping ring (19) is held.
  • the filler pieces (17, 18) also consist of a metal, preferably the same metal as the annular grinding tool (13), ie aluminum or an aluminum alloy.
  • the tensioning element (15), which is associated with an outer cone of a conical groove (27) in the base body (22), is advantageously made of a different material. It expediently has a lower modulus of elasticity. It can consist of a heavy plastic or brass or steel, for example. A relatively hard rubber is also possible, for example neoprene with a hardness of about 75 shore.
  • the clamping element (19) is designed in such a way that it deforms elastically as a result of the centrifugal forces that occur and only causes the tool (13) to be braced with the clamping surface (20) via the filler pieces (17, 18) at the nominal speed.

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)
EP88121356A 1988-01-30 1988-12-21 Vorrichtung zum Rund- und/oder Profilschleifen Withdrawn EP0326703A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802792A DE3802792A1 (de) 1988-01-30 1988-01-30 Vorrichtung zum rund- und/oder profilschleifen
DE3802792 1988-01-30

Publications (1)

Publication Number Publication Date
EP0326703A1 true EP0326703A1 (de) 1989-08-09

Family

ID=6346322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121356A Withdrawn EP0326703A1 (de) 1988-01-30 1988-12-21 Vorrichtung zum Rund- und/oder Profilschleifen

Country Status (4)

Country Link
US (1) US5074078A (enrdf_load_stackoverflow)
EP (1) EP0326703A1 (enrdf_load_stackoverflow)
JP (1) JPH01216758A (enrdf_load_stackoverflow)
DE (1) DE3802792A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884315A1 (de) 2006-08-03 2008-02-06 Supfina Grieshaber GmbH & Co. KG Werkzeug, Vorrichtung und Verfahren zur Herstellung eines insbesondere als Kugelrollspindel ausgebildeten Werkstücks

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040035162A1 (en) * 1999-02-05 2004-02-26 Williams Richard Henry Fertiliser
US9550272B2 (en) * 2009-11-17 2017-01-24 Rem Technologies, Inc. Magnetic fixture
CN119188575B (zh) * 2024-11-21 2025-03-14 长春汽车工业高等专科学校 一种金属零件抛光装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1169804B (de) * 1960-05-17 1964-05-06 Karl Wilhelm Dressendoerfer Vorrichtung zum Aussenrundschleifen von Kurbel- und Exzenterwellen
US4023311A (en) * 1974-04-11 1977-05-17 Klockner-Humboldt-Deutz Aktiengesellschaft Device for fine honing crankshafts
DE3132560A1 (de) * 1981-08-18 1983-03-03 GFM Gesellschaft für Fertigungstechnik und Maschinenbau GmbH, 4403 Steyr "Verfahren und Werkzeugmaschine zur Rundbearbeitung exzentrischer Wellenquerschnitte, insbesondere Kurbelwellen-Hubzapfen"

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963448A (en) * 1932-01-11 1934-06-19 Danta Boyd Sanding machine drum
US2173555A (en) * 1936-10-05 1939-09-19 Franz Forg Grinding disk
US2683635A (en) * 1949-11-12 1954-07-13 Roy M Wilcox Air bearing
US2893292A (en) * 1957-12-26 1959-07-07 Joseph W Naperola Device for removing the excess welding bead from the exterior surface of welded seamtubing
US3094822A (en) * 1960-11-14 1963-06-25 Charles T Breitenstein Spiral grinding fixture
US3039235A (en) * 1961-01-31 1962-06-19 Hamco Mach & Elect Co Cutting apparatus
US3143382A (en) * 1961-06-06 1964-08-04 Commissariat Energie Atomique Aerodynamic bearing
US3175548A (en) * 1964-05-14 1965-03-30 Shirley I Weiss Cutting wheel holders
US3491742A (en) * 1967-05-19 1970-01-27 Shirley I Weiss Annular cutting blades
US3599377A (en) * 1968-07-22 1971-08-17 Bausch & Lomb Lens alignment using gas bearings
DE2231226C2 (de) * 1972-06-26 1978-11-02 Dr. Reutlinger & Soehne, 6100 Darmstadt Vorrichtung zum zerspanenden Unwuchtausgleich an Rotationskörpern
US3964349A (en) * 1975-01-13 1976-06-22 Von Arnauld Corporation Method and apparatus for grinding the teeth of a circular saw to an improved contour

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1169804B (de) * 1960-05-17 1964-05-06 Karl Wilhelm Dressendoerfer Vorrichtung zum Aussenrundschleifen von Kurbel- und Exzenterwellen
US4023311A (en) * 1974-04-11 1977-05-17 Klockner-Humboldt-Deutz Aktiengesellschaft Device for fine honing crankshafts
DE3132560A1 (de) * 1981-08-18 1983-03-03 GFM Gesellschaft für Fertigungstechnik und Maschinenbau GmbH, 4403 Steyr "Verfahren und Werkzeugmaschine zur Rundbearbeitung exzentrischer Wellenquerschnitte, insbesondere Kurbelwellen-Hubzapfen"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1884315A1 (de) 2006-08-03 2008-02-06 Supfina Grieshaber GmbH & Co. KG Werkzeug, Vorrichtung und Verfahren zur Herstellung eines insbesondere als Kugelrollspindel ausgebildeten Werkstücks

Also Published As

Publication number Publication date
DE3802792C2 (enrdf_load_stackoverflow) 1991-12-19
DE3802792A1 (de) 1989-08-17
JPH01216758A (ja) 1989-08-30
US5074078A (en) 1991-12-24

Similar Documents

Publication Publication Date Title
EP1526946B1 (de) Verfahren und system zum schleifen eines mit einer längsbohrung versehenen rotationssymmetrischen maschinenbauteils
AT518794B1 (de) Bohrwerkzeug
DE2937976C2 (de) Maschine zum Schleifen oder Fräsen von konvexen und/oder konkaven sphärischen Flächen
DE3913139C2 (enrdf_load_stackoverflow)
WO2021023489A1 (de) Rotierendes zerspanungswerkzeug
EP2641696B2 (de) Werkzeug zum Bearbeiten von Materialien
DE4309771C2 (de) Verfahren und Vorrichtung zur Fertigbearbeitung eines keramischen Turbinenrotors
DE3727103A1 (de) Werkzeug zum entgraten des uebergangs zwischen zwei bohrungen
DE3802792C2 (enrdf_load_stackoverflow)
EP0214624A2 (de) Vorrichtung zum Räumen einer zylindrischen Fläche eines Werkstückes, vorzugsweise von Lagerzapfen, insbesondere einer Kurbelwelle
DE60206518T2 (de) Werkzeughaltevorrichtung für hochgenaue kalibrierung von löchern
EP0328958B1 (de) Vorrichtung zum Bearbeiten von rotationssymmetrischen Werkstückflächen
DE102018211942A1 (de) Vorrichtung zur Bearbeitung rotationssymmetrischer Bauteile
EP3953085B1 (de) Werkzeug zur spanenden bearbeitung eines werkstücks
DE102017125889A1 (de) Verfahren und Vorrichtung zum Auswuchten
EP2509746B1 (de) Anordnung zum schleifen von elektroden und schleifscheibe
EP2509747B1 (de) Elektrodenschleifvorrichtung
EP2929981B1 (de) Haltevorrichtung zur aufnahme und halterung von mindestens einem bauteil und gleitschleifverfahren
WO2006002862A1 (de) Werkzeug und vorrichtung zur bearbeitung von werkstücken
DE19643192A1 (de) Verfahren zum Bearbeiten von rotationssymmetrischen Werkstückflächen sowie Werkzeug zur Durchführung eines solchen Verfahrens
EP3819054A1 (de) Trägerbaugruppe, insbesondere werkzeugträgerbaugruppe und verfahren zu deren zusammenbau
EP1884315A1 (de) Werkzeug, Vorrichtung und Verfahren zur Herstellung eines insbesondere als Kugelrollspindel ausgebildeten Werkstücks
DE102004007469B4 (de) Einspann- und Mitnahmevorrichtung für Kurbelwellen
EP3536431B1 (de) Vorrichtung zur mechanischen bearbeitung eines werkstücks
DE69211119T2 (de) Hilfsvorrichtung für Schleifmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR LI SE

17P Request for examination filed

Effective date: 19890913

17Q First examination report despatched

Effective date: 19910306

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19920201