EP0046604B1 - Outil pour dégrossir, lisser et polir des surfaces solides, particulièrement adapté aux matériaux pierreux - Google Patents

Outil pour dégrossir, lisser et polir des surfaces solides, particulièrement adapté aux matériaux pierreux Download PDF

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Publication number
EP0046604B1
EP0046604B1 EP81200684A EP81200684A EP0046604B1 EP 0046604 B1 EP0046604 B1 EP 0046604B1 EP 81200684 A EP81200684 A EP 81200684A EP 81200684 A EP81200684 A EP 81200684A EP 0046604 B1 EP0046604 B1 EP 0046604B1
Authority
EP
European Patent Office
Prior art keywords
rollers
plate
rotation
tool
abrasive
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
EP81200684A
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German (de)
English (en)
Other versions
EP0046604A1 (fr
Inventor
Ermanno Pacini
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT81200684T priority Critical patent/ATE10815T1/de
Publication of EP0046604A1 publication Critical patent/EP0046604A1/fr
Application granted granted Critical
Publication of EP0046604B1 publication Critical patent/EP0046604B1/fr
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 roughing, smoothing and polishing solid surfaces, particularly adapted for stony materials.
  • the roughing, smoothing and polishing operations are, as known, the last stages of the working of stony materials and substantially serve, in the order, to have a planar surface, to remove the surface roughnesses and, finally, to obtain a specular surface.
  • the most widespread type of tool for these operations consists of a horizontal circular plate provided with rotary and translatory motion, which supports at its lower face a circumferential succession of variously arranged abrasive segments or small abrasive discs, called “satellites”, which are rotated about their own axes, in opposite sense with respect to the sense of rotation of the supporting plate.
  • the tool with abrasive discs is more expensive than that with abrasive segments, but it shows the advantage of compensating at least partially, through the contrary rotation of the satellites, the difference between the peripheral speeds of points at different distances from the center of rotation of the plate.
  • the abrasive remains in contact with the material being worked only along a generating line of the cylinder and for extremely short times, so that the mud, after having been diluted greatly by the cooling water, is immediately removed as a result of the same rotation of the cylinder.
  • a new tool which consists of a normal horizontal plate provided with abrasive elements with horizontal axis, which are radially arranged with respect to the axis of rotation of the plate and have a lower section in the form of a circular arc of about 25°.
  • Said abrasive elements are rotated about their own axes through an angle of 25° in alternated senses, with the result that the contact between the abrasive and the material to be worked occurs continuously along generating lines and the working speed of each single grain of abrasive depends both on its distance from the axis of the plate and on the sense of rotation imparted to the abrasive element in that precise instant.
  • the working speed is thus variable from one to another grain and, for a same abrasive grain, from one to another instant.
  • a machine disclosed in FR-A-817793, in which a plurality of frusto-conical abrasive rollers extend approximately radially of the axis of rotation of a support plate with their major bases faced towards the center of the plate and are rotated in the same sense as the plate, so that the surface speeds of the plate and the rollers are additive to produce a uniform value along the roller generating line in contact with the worked material, and which has the features of the pre-characterizing part of Claim 1.
  • the object of the present invention is to realize a roughing, smoothing and polishing tool, which ensures uniform working capacity throughout the working area without suffering the drawbacks of the above indicated prior art.
  • a tool comprising a horizontal plate rotatable about a vertical axis, a plurality of truncated-cone working rollers rotatably supported by said plate with a lower generating line arranged parallel to the plate plane below said plate, and drive means for rotating said rollers about their own axes at speeds in selected ratio with the rotation speed of the plate the rollers extending substantially radially and the ratio being such that all of the points of said lower generating lines of the rollers have substantially equal speeds of movement with respect to the surface to be worked, characterized in that said rollers are arranged with their major bases towards the outside of the plate and are rotated about their own axes in a sense opposite to that of rotation of the plate, so that the rotation speeds of the rollers and the plate are subtractive at said lower generating line of the rollers.
  • the sense of rotation of the rollers about their own axes is chosen in such a way that along their lower generating lines, which are the "working lines" of the tool, the peripheral speed due to the rotation of the plate and that due to the rotation of the rollers are subtracted from one another.
  • the combined disposition of the truncated-cone rollers with their major bases towards the outside of the plate results in that the maximum speed value is subtracted from the maximum speed value and the minimum speed value is subtracted from the minimum speed value to cause the difference to become uniform from one to the other end of the roller.
  • a proper selection of the diameter ratio of the rollers and of the speeds of rotation of the plate and the rollers can finally make said difference exactly constant along the lower generating line of the rollers.
  • the tool is thus able to work perfectly and an even consumption of the abrasive is obtained.
  • a horizontal plate 1 provided with radial windows 2 is fixed below a rotatable, substantially cup-like, inner support 3, which is rotated about its own vertical axis 19, coincident with that of the plate, as guided by a stationary, cup-like, outer support 4, to which the inner support 3 is rotatably connected through bearings 5 and 6.
  • a central rod or sleeve 7 of the rotatable support 3 there is supplied in conventional manner cooling and washing water, which reaches through radial bores 8 the annular peripheral chamber 9 formed between the lateral lower flaring 10 of the rotatable support 3 and the underlying plate 1.
  • Each roller 11 has end pins 12 and 13 rotatably supported by the rotatable support 3 through sealed bearings 14 and 15.
  • the outer pin 12 even exists from the rotatable inner support 3, ending with a pinion 16 in engagement with a crown gear 17 carried by an annular plate 18 made integral with the stationary outer support 4.
  • the (for example, anticlockwise) rotation of the rotatable support 3 and the plate 1 is thus able to cause an opposite-sense (i.e. clockwise) rotation of each roller 11 about its own axes, at a speed much higher than that of the plate 1. It follows that the lower generating line of each roller, which is engaged with the underlying surface being worked, is subjected to two peripheral speeds of opposite signs, of which that due to the rotation of the plate, which is the lower one, is subtracted from that due to the rotation of the roller about its own axis, which is the higher one.
  • the tool is made in two separable parts 31 and 32, which are normally fixed to one another by a nut 33 screwed onto the threaded end 34 of a pin 35, which projects downwards from the upper part 31 and passes through a central bore 36 of the lower part 32.
  • the upper part 31 comprises a stationary support 37 and a rotatable support 38, which include respective upwardly extending tubular rods 39 and 40, which are coaxially arranged and rotatably coupled to one another through a bearing 41.
  • the rotatable support in turn rotatably carries three shafts 42, which are radially arranged at circumferentially spaced positions and on which a conical pinion 43, engaged with a conical crown gear 44 of the stationary support 37, and a cylindrical gear 45 are rigidly mounted.
  • the lower part 32 in turn comprises a support 46, which is rotated along with the rotatable support 38 of the upper part 31 as made integral therewith by the pin 35 and the nut 33.
  • Said support 46 rotatably carries three shafts 47, which are radially arranged at circumferentially spaced positions, exactly below the shafts 42 of the upper part 31.
  • the shafts 47 are slightly inclined with respect to the horizontal working plane 51, so that each truncated-cone roller 49 has a generating line completely engaged with the same working plane, as it happened to the rollers 11 of the tool of Figures 1 to 3.
  • a plate 52 fixed to the support 46 completely closes the lower part 32 of the tool, allowing only a minimum section of the rollers 49 around the working generating line to project through the radial windows 53.

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Finishing Walls (AREA)

Claims (3)

1. Outil pour dégrossir, lisser et polir des surfaces solides, comprenant une plaque horizontale (1) pouvant être mise en rotation autour d'un axe vertical (19), une pluralité de rouleaux travaillants tronconiques (11) supportés rotatifs par ladite plaque (1), et qui présentent une génératrice inférieure (22) disposée parallèlement au plan de la plaque, au-dessous de ladite plaque, et des moyens d'entraînement (16, 18) destinés à faire tourner lesdits rouleaux (11) autour de leurs propres axes, a des vitesses qui sont dans un rapport choisi avec la vitesse de rotation de la plaque (1), les rouleaux s'étendant sensiblement radialement et le rapport étant tel que tous les points desdites génératrices inférieures des rouleaux possèdent des vitesses de mouvement sensiblement égales par rapport à la surface à travailler, caractérisé en ce que lesdits rouleaux (11) sont disposés avec leurs grandes bases dirigées vers l'extérieur de la plaque (1) et sont mis en rotation autour de leurs propres axes dans un sens opposé à celui de la rotation de la plaque (1 de manière que les vitesses de rotation des rouleaux (11) et de la plaque (1) se soustraient au niveau de ladite génératrice inférieure (22) des rouleaux (11). ).
2. Outil selon la revendication 1, caractérisé en ce que lesdits moyens d'entraînement (16, 18) sont choisis de manière à faire tourner lesdits rouleaux (11) autour de leurs propres axes à une vitesse supérieure à celle de la rotation de la plaque (1).
3. Outil selon la revendication 1, caractérisé en ce que lesdits rouleaux (11) sont munis d'un revêtement abrasif réalisé sous la forme d'une ou plusieurs hélices enroulées autour des rouleaux.
EP81200684A 1980-08-25 1981-06-18 Outil pour dégrossir, lisser et polir des surfaces solides, particulièrement adapté aux matériaux pierreux Expired EP0046604B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81200684T ATE10815T1 (de) 1980-08-25 1981-06-18 Werkzeug zum schruppen, glaetten und polieren fester oberflaechen, insbesondere geeignet fuer steinige materialien.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2426880 1980-08-25
IT24268/80A IT1132464B (it) 1980-08-25 1980-08-25 Utensile per la sgrossatura,levigatura e lucidatura di superfici solide,particolarmente adatto per materiali lapidei

Publications (2)

Publication Number Publication Date
EP0046604A1 EP0046604A1 (fr) 1982-03-03
EP0046604B1 true EP0046604B1 (fr) 1984-12-19

Family

ID=11212843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200684A Expired EP0046604B1 (fr) 1980-08-25 1981-06-18 Outil pour dégrossir, lisser et polir des surfaces solides, particulièrement adapté aux matériaux pierreux

Country Status (4)

Country Link
EP (1) EP0046604B1 (fr)
AT (1) ATE10815T1 (fr)
DE (1) DE3167810D1 (fr)
IT (1) IT1132464B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209273A1 (de) * 1991-03-21 1992-09-24 Luca Toncelli Schleifkopf zur steinbearbeitung
DE4316879A1 (de) * 1993-05-19 1994-11-24 Senger Lore Schleifkopf

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1169121B (it) * 1983-04-27 1987-05-27 Ermanno Pacini Rullo troncoconico a superficie abrasiva per utensile levigatore a rulli troncoconici radiali
USRE34014E (en) * 1983-05-11 1992-08-04 Udviklingscentret Hansen & Hundebol A/S Method and apparatus for finishing surfaces
US4646473A (en) * 1984-05-08 1987-03-03 Udviklingscentret Hansen Method and apparatus for finishing surfaces
DK156703C (da) * 1983-05-11 1991-01-21 Hh Patent Aps Fremgangsmaade og apparat til bearbejdning af overflader ved hjaelp af roterende slibeelementer
IT1180845B (it) * 1984-12-17 1987-09-23 Snc Officine Meccaniche & Fond Dispositivo ad equipaggio rotante per la calibratura dello spessore di lastre o strisce di granito marmo e materiali lapidei in genere
EP0208671B1 (fr) * 1985-06-24 1989-08-16 DIAMANT BOART Société Anonyme Outil de surfaçage à rouleaux
DE3920946A1 (de) * 1989-06-27 1991-01-03 Held Kurt Vorrichtung zur kontinuierlichen herstellung von laminaten
IT1240859B (it) * 1990-01-18 1993-12-17 Tecnomec Di Cado' - Gnoato - Guidolin Testa levigatrice a mole oscillanti per materiali lapidei, particolarmente granito in lastre
US5665656A (en) * 1995-05-17 1997-09-09 National Semiconductor Corporation Method and apparatus for polishing a semiconductor substrate wafer
IT1307863B1 (it) * 1999-04-20 2001-11-19 Comes Srl Testa calibratrice per materiali lapidei.
IT1391076B1 (it) * 2008-07-11 2011-11-18 Comes Srl Testa per il trattamento di materiali lapidei o ceramici
EP2255924A1 (fr) * 2009-05-29 2010-12-01 Mbd S.R.L. Procédé d'étalonnage de surfaces de matériau de pierre
CN102398197B (zh) * 2010-09-14 2013-09-18 交通运输部公路科学研究所 一种平板式磨光机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468719C (de) * 1928-11-17 Georg Siguda Zusatz-Schleifvorrichtung fuer Schleifmaschinen mit senkrechter, das Schleifwerkzeugkardangelenkig tragender, umlaufender Schleifspindel
NL36654C (fr) * 1932-12-22
BE414313A (fr) * 1936-03-11
US2420876A (en) * 1945-02-07 1947-05-20 Freud Ernest Machine for surface finishing action on materials
DE801498C (de) * 1949-07-15 1951-01-08 Karl Dipl-Ing Fickert Flaechenschleif- und Poliermaschine mit planetenartig umlaufenden Schleifscheiben
FR1153833A (fr) * 1955-06-20 1958-03-21 Machine à polir à plusieurs meules, pour marbres, carreaux, plaques de ciment et matériaux similaires
FR1407811A (fr) * 1964-06-25 1965-08-06 Roland Hignard Dispositif de meulage et de polissage de surfaces telles que celles des pierres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4209273A1 (de) * 1991-03-21 1992-09-24 Luca Toncelli Schleifkopf zur steinbearbeitung
DE4209273C2 (de) * 1991-03-21 1999-07-01 Luca Toncelli Schleifkopf zur Steinbearbeitung
DE4316879A1 (de) * 1993-05-19 1994-11-24 Senger Lore Schleifkopf

Also Published As

Publication number Publication date
ATE10815T1 (de) 1985-01-15
IT8024268A0 (it) 1980-08-25
IT1132464B (it) 1986-07-02
DE3167810D1 (en) 1985-01-31
EP0046604A1 (fr) 1982-03-03

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