EP0208671B1 - Flachschleifwerkzeug mit Rollen - Google Patents

Flachschleifwerkzeug mit Rollen Download PDF

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Publication number
EP0208671B1
EP0208671B1 EP86870081A EP86870081A EP0208671B1 EP 0208671 B1 EP0208671 B1 EP 0208671B1 EP 86870081 A EP86870081 A EP 86870081A EP 86870081 A EP86870081 A EP 86870081A EP 0208671 B1 EP0208671 B1 EP 0208671B1
Authority
EP
European Patent Office
Prior art keywords
rollers
tool
roller
respect
pair
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.)
Expired
Application number
EP86870081A
Other languages
English (en)
French (fr)
Other versions
EP0208671A1 (de
Inventor
Charles Pierre Hallez
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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
Priority claimed from BE0/215250A external-priority patent/BE902733A/fr
Application filed by Diamant Boart NV SA filed Critical Diamant Boart NV SA
Publication of EP0208671A1 publication Critical patent/EP0208671A1/de
Application granted granted Critical
Publication of EP0208671B1 publication Critical patent/EP0208671B1/de
Expired 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • B24B41/047—Grinding heads for working on plane surfaces

Definitions

  • the present invention relates to a tool for surfacing a stony material having a flat face.
  • the tool comprises a support plate rotatably mounted on a spindle perpendicular to said planar face, so as to be driven in a plane parallel to this face and furnished below with at least one pair of cylindrical abrasive rollers, mounted on free bearings rotatable around their own axis, in an eccentric execution with respect to the drive spindle, so that the rollers have both a rolling component and a tangential sliding component with respect to the stony material.
  • This type of tool is particularly suitable for equipping either a polishing train or an automatic polisher intended for dressing, softening and polishing very hard rocks, such as granite, in order to provide them with a sufficient surface finish. to receive the buffing.
  • EP-A-0 067 402 describes a surfacing tool for hard rocks.
  • This tool comprises a vertical shaft and rollers fitted with diamond crowns and rotatably mounted around a horizontal axis, so as to arrange the working surface of the crowns in the same horizontal plane.
  • the rollers are preferably distributed at each of the vertices of a regular polygon inscribed in a circle whose center is determined by the vertical tree. They are oriented tangentially to a concentric circle of arbitrarily chosen radius. Each roller is therefore mounted on its own axis, parallel to the surface to be treated.
  • the surface swept by the contact generator of each roller is varied. This surface is that between the circles determined by the ends of each generatrix of contact of the rollers with the stony material.
  • the working surface is maximum when the surfacing roller is oriented tangentially to a circle of zero radius.
  • an efficiency of the derisory tool because the action of the roller is essentially reduced to a rolling, during which the peripheral speed of the rollers in rotation around their own axis parallel to the face to be treated is maximum and the slip almost zero.
  • the working surface of the roller is reduced to a thin annular surface, when the roller is oriented tangentially to a circle of large diameter.
  • the peripheral speed of the roller on itself is then minimum and the sliding of the rollers on the stony material is maximum.
  • the effectiveness of the tool is better but relates to a too small work surface.
  • EP-A-46 604 also discloses a tool for roughing, smoothing and polishing solid surfaces.
  • This known tool comprises a rotating horizontal plate carrying frustoconical rollers, arranged radially with their large base directed towards the outside of the plate. These rollers are driven in rotation about their own axis by a pinion engaged with a peripheral toothed ring made integral with the frame of the machine. The direction of rotation is chosen opposite to that of the rotation of the plate, so that the speeds of rotation of the rollers and of the plate subtract at the level of the generator of contact with the stony material.
  • the appropriate dimensioning of the diameters of the rollers and the choice of the speeds of rotation of the plate and the rollers which must make it possible to obtain a uniform distribution of the wear of the diamond segments of the rollers is quite complex.
  • the roller drive mechanism is complicated because it includes many moving mechanical parts and therefore subject to wear.
  • Document US-A-4 361 987 also discloses a surfacing device comprising a mounting element which can rotate about a first axis of rotation and at least one finishing element which can rotate freely relative to the mounting element, around a second axis of rotation.
  • the finishing elements consist of rollers rigidly fixed to the ends of a shaft, arranged on the same side of a radial plane. perpendicular to the longitudinal axis of the shaft and passing through the axis of rotation of the mounting element.
  • the pair of rollers is subjected to translational displacements of parallel directions and of the same sign. As a result, the pair of rollers tends to roll over the material to be surfaced.
  • the radial component of the speed of rotation becomes preponderant. Due to the different distance of each of the rollers from the above-mentioned radial plane, the translation component is different for each of the rollers. This difference induces a friction effect of the rollers on the material to be surfaced and therefore a grinding effect. This effect is however minimal compared to the rolling speed involved. This results in significant vibrations and a lot of noise.
  • a comet tail precedes the cutting element of the tool. The bite of the tool is therefore very weak and the tool described in the known state of the art tends to slip on itself.
  • the present invention aims to remedy the above-mentioned drawback and proposes a surface head of simple and robust construction, having a better bite for a lower noise level and energy consumption.
  • a tool for surfacing a stony material having a flat face comprising a support plate rotatably mounted on a spindle perpendicular to said flat face, so as to be driven in a plane parallel to this face and furnished below '' at least one pair of cylindrical abrasive rollers, mounted on free rotating bearings around their own axis, in one embodiment off-center with respect to the drive spindle, so that the rollers have both a rolling component and a tangential sliding component with respect to the material, characterized in that the rollers are mounted two by two rigidly at the ends of the same shaft, one of the rollers having a speed relative to the stony material, lower than that of the other roller.
  • the shafts are rotated by bearings carried by bases arranged between the rollers.
  • each of the rollers of the pair has along the line of contact with the stony material, a speed relative to the stony material, which is directed in the same direction and the same direction as the speed of translation of the centers of rotation of each pair of rollers and the magnitude of the speed of one of the rollers (8 ') of the pair (8, 8') is less than that of l 'other roller (8) of the pair (8, 8').
  • Figure 3 is a side elevational view of the tool.
  • a surfacing tool designated as a whole by the reference notation 1 comprises a rotary head constituted by a horizontal rectangular support plate 2, mounted in its center 3 on a vertical drive spindle 4.
  • the support plate 2 is rectified on its underside and has several rows 5, 6 of fixing holes 7.
  • the underside of the plate 2 is equipped with rollers 8, 8 '.
  • Each roller 8 or 8 ′ consists of a cylindrical body 9 of approximately 10 to 200 mm in radius, on which is mounted a series of rings 10 formed of juxtaposed diamond cylindrical rings.
  • rollers 8, 8 ′ are advantageously provided with an abrasive coating produced in the form of one or more rings 10 threaded on a cylindrical body 9.
  • rollers are rigidly coupled in pairs 8, 8 ′ to the ends of the shafts 12, carried by robust bearings 13, formed in bases 14.
  • the pairs of rollers 8, 8 ′ are mounted parallel to each other symmetrically with respect to the axis of rotation of the vertical spindle 4. They are arranged eccentrically with respect to the axis of rotation of the spindle 4, so as to generate for each of the rollers 8, 8 'of the same pair, curved paths of different radii of curvature.
  • This driving force gives rise to an angular speed Y respectively Z for each of the pairs of rollers.
  • the speed of rotation of the spindle 4 and the size of the plate and the rollers, as well as the offset of these will determine the sliding speeds of the rollers on the stony material.
  • a conventional central watering device brings along the driving spindle 4 of the surfacing tool, cooling and washing water which reaches each of the rollers 8, 8 '.
  • each of the rollers 8 has a diameter of 174 mm and a useful length of 120 mm.
  • each pair of tools 8, 8 ′ turns in the Y, Z direction induced by the most eccentric roller 8.
  • the abrasive covering of a roller 8, 8 ′ may consist of a single sleeve 10, mounted on a cylindrical body 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Claims (4)

1. Werkzeug zur Oberflächenbehandlung einer ebenen Fläche eines Steinmaterials mit einer Trägerplatte (2), die an einer zu der ebenen Fläche senkrechten Spindel (4) derart drehbar montiert ist, daß sie in einer zu der Fläche parallelen Ebene mitgenommen wird, und die an ihrer Unterseite mindestens ein Paar Rollen (8, 8') aufweist, welche eine seitliche Schleifbeschichtung aufweisen und an Loslagern montiert sind, die in einer in bezug auf die Antriebsspindel (4) exzentrischen Bewegung um ihre eigene Achse derart drehbar sind, daß die Rollen (8, 8') gleichzeitig eine Rollkomponente und eine in bezug auf das Steinmaterial tangential gleitende Komponente darstellen, dadurch gekennzeichnet, daß zumindest zwei Rollen (8, 8') fest an den Enden der selben Welle (12) angebracht sind, wobei eine der Rollen (8') eine geringere Relativgeschwindigkeit in bezug auf das Steinmaterial aufweist als die andere Rolle (8).
2. Werkzeug nach Anspruch 1, dadurch gekennzeichnet, daß die Wellen (12) in Lagern (13), die von zwischen den Rollen (8, 8') angeordneten Sockeln (14) getragen werden, drehbar gelagert sind.
3. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jede Rolle (8, 8') aus auf einen zylindrischen Körper (9) aufgefädelten Ringen (10) besteht.
4. Werkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß jede Rolle (8, 8') aus einer auf einen zylindrischen Körper (9) montierten Einzelmuffe (10) besteht.
EP86870081A 1985-06-24 1986-06-06 Flachschleifwerkzeug mit Rollen Expired EP0208671B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/215250A BE902733A (fr) 1985-06-24 1985-06-24 Outil de surfacage a rouleaux.
BE215250 1985-06-24

Publications (2)

Publication Number Publication Date
EP0208671A1 EP0208671A1 (de) 1987-01-14
EP0208671B1 true EP0208671B1 (de) 1989-08-16

Family

ID=3843906

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86870081A Expired EP0208671B1 (de) 1985-06-24 1986-06-06 Flachschleifwerkzeug mit Rollen

Country Status (4)

Country Link
US (1) US4765097A (de)
EP (1) EP0208671B1 (de)
JP (1) JPS6254660A (de)
DE (1) DE3665036D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29508657U1 (de) * 1995-05-24 1995-09-14 Behr, Rainer, 89522 Heidenheim Schleifmaschine
ITMI20070939A1 (it) * 2007-05-09 2008-11-10 Adige Sala Spa Dispositivo per la sbavatura delle estremita' di tubi
EP2322320A1 (de) * 2009-11-17 2011-05-18 Mbd S.R.L. Einstell-/Poliersystem für Oberflächen von Steinmaterial mit verringerter Lärmemission

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361987A (en) * 1976-10-29 1982-12-07 Gal International Industries Inc. Apparatus for high tolerance polishing of a work-piece surface

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1663759A (en) * 1924-12-29 1928-03-27 Jacob C Ham Pavement grinder
US1860794A (en) * 1928-01-25 1932-05-31 Micro Machine Company Axle grinder
US2420876A (en) * 1945-02-07 1947-05-20 Freud Ernest Machine for surface finishing action on materials
US2450157A (en) * 1946-08-23 1948-09-28 Peckett Samuel Charles Means for preparing true surfaces
US2688826A (en) * 1952-03-17 1954-09-14 Peckett Samuel Charles Method and means for preparing true surfaces
FR1420992A (fr) * 1965-01-15 1965-12-10 Christensen Diamond Prod Co Fraises diamantées
US4188755A (en) * 1978-04-19 1980-02-19 Ex-Cell-O Corporation Expandable abrading tool and abrasive insert and washers thereof
US4185350A (en) * 1978-07-31 1980-01-29 Trico Equipment Corporation Scarifying attachment for floor machine
IT1132464B (it) * 1980-08-25 1986-07-02 Ermanno Pacini Utensile per la sgrossatura,levigatura e lucidatura di superfici solide,particolarmente adatto per materiali lapidei
DE3123597A1 (de) * 1981-06-13 1982-12-30 Hans 8592 Wunsiedel Kammerer Schleifkopf fuer hartgestein
GB2103128B (en) * 1981-07-30 1986-03-19 Itzchak Lapsker Surface finishing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361987A (en) * 1976-10-29 1982-12-07 Gal International Industries Inc. Apparatus for high tolerance polishing of a work-piece surface

Also Published As

Publication number Publication date
DE3665036D1 (en) 1989-09-21
JPS6254660A (ja) 1987-03-10
EP0208671A1 (de) 1987-01-14
US4765097A (en) 1988-08-23

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