US3026653A - Automatic machine for lapping of marble slabs and other similar stones - Google Patents

Automatic machine for lapping of marble slabs and other similar stones Download PDF

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Publication number
US3026653A
US3026653A US849897A US84989759A US3026653A US 3026653 A US3026653 A US 3026653A US 849897 A US849897 A US 849897A US 84989759 A US84989759 A US 84989759A US 3026653 A US3026653 A US 3026653A
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Prior art keywords
carriage
motor
lapping
projections
machine
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Expired - Lifetime
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US849897A
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English (en)
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Zordo Battista De
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    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/02—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a reciprocatingly-moved work-table
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/224—Portal grinding machines; Machines having a tool movable in a plane

Definitions

  • the main object of the present invention is to provide an automatic machine for lapping or bufiing marble slabs or other similar stones according to mutually parallel and perpendicular directions and according to a predetermined program and this in a fully automatic manner after final set-up the machine.
  • the machine is of the type comprising a first carriage suitable for being displaced by motor means in a first direction, a second carriage slidably mounted on said first carriage and connected to motor means suitable for moving it in a second direction perpendicular to said first direction, said second carriage being connected to a known type abrasive machine, characterized in that said first carriage is connected to a motion distributing and reversing member for the respective motor means, said second carriage being connected to a further motion distributing and reversing member for the respective motor means and by the fact that a shaft is provided parallel to said first direction connected to the machine casing and provided with means to act on said first motion distributing member, and a second shaft is provided parallel to said second direction, associated with said first carriage, and provided with means to act with said second motion distributing and reversing member.
  • FIG. 1 is a perspective and only partial view of the machine according to the invention
  • FIGS. 2 and 3 show two details
  • FIGS. 4 and 5 diagrammatically illustrate the possible paths of movement of the abrasive tools
  • FIG. 6 shows an electric connection diagram
  • FIG. 7 is a perspective detailed view of the distributingreversiug member for the electric motors controlling the two aforementioned carriages.
  • the machine is of the type comprising a first carriage 10 which is slidably mounted along tracks 11 of which only one is shown in the drawing and is associated, at one of its ends 10a, with an electric motor 12.
  • the latter by means of a reduction gear, not shown, controls a toothed pinion, also not shown, with a meshing rack 13 provided on track 11.
  • the carriage 10 provided with rollers 14, may thus be displaced according to the FAFB direction arrows.
  • the motor 12 is capable of rotating in two directions as Will better appear hereinafter.
  • a second carriage is indicated movable in the directions of arrows FCFD, which are perpendicular to tracks 11.
  • FCFD perpendicular to tracks 11.
  • 214, 212, 211, 213 are indicated elements corresponding to'14, 12, 11, 13 already described in relation to the first carriage.
  • Carriage it ⁇ is associated to a distributing-inversion member 40 of the motion of motor 12: said member 49 comprises a commutator lever 41 pivoted in 42 and having a preferably fork shaped arm 41a and a suitably Shaped arm 41b.
  • a shaft 50 which is rotatably mounted on the machine casing is provided and it presents at one of its ends a four-lobed cam 51.
  • a roller 52 is urged in an elastic manner by means of any known device between said lobes and therefore may firmly position shaft 50 correspondingly to the number of lobes.
  • sleeves 71 which may be mounted, for example, as indicated in FIG. 2, on shaft 50. That is, said sleeves 71 may be formed by two mutually hinged branches 71a and 71b and friction connectable to shaft 56 by means of a screw 71c, preferably shaft 50 presents a longitudinal slot 50a along which sleeve 71 may slide.
  • two projection devices are mounted, each one having four projections 9t ⁇ , preferably longitudinally offset and at 90 apart.
  • One, of said devices being fixed and the other, preferably adjustably mounted on shaft 50.
  • Parts 91a, 91b, 91c correspond to parts 71a, 71b, 710 relating to FIG. 2.
  • Projections 99 act only on arm 41b of lever 41 and projections 70 act only on arm 41a of fork shaped lever 41.
  • projections 7% act on arm 41b this being obtained by suitably proportioning the length of the projections.
  • Projections 7G by acting on arm 41a allow commutation of electric motor feed 12 and 212 and therefore will be designated as commutating projections, while projections 90 act on arm 41!) of lever 41 thus reversing rotation of motor 12 and will thus hereinafter be called reversing projections or stop projections.
  • a shaft 25% is parallelly mounted to the arrows direction FC-FD and rotatably mounted on a couple of brackets A, fixed on carriage 10 and thus movable with the latter according to the arrows direction FAFB.
  • At said shaft 25d cornmutating projections and reversing stop projections similar to the ones specified above are provided.
  • Carriage 210 is also associated to a motion re-
  • the parts similar to the ones previously described have been marked with the same reference numbers preceded by number 2.
  • a coupling device is provided between shafts 5t) and 250 so that rotation of a shaft permits the rotation of the other.
  • Said device consists of two props 8t 2% respectively connected to shafts 50 and 25b and of a rod 282 fitted to carriage 216; said rod 282 has a transversal extension 283 at its end suitable for positively rotating the prop 8t when carriage 210 is displaced in the FD arrow direction and an extension 284 suitable for positively rotating prop 28% when carriage 210 is displaced in the FB arrow direction.
  • the travel appears identified by section a.
  • the reversing projection iii intervenes whereby motor 12 stops and automatically motor 212 starts determining travel b until a porjection 270 acts on member 2% interrupting feeding of motor 212 and allowing feeding of motor 12; the latter displaces the carriage according to the PB direction namely it allows the lapping machine to travel according to path 0.
  • the reversing projection 90 intervenes and stops motor 12 and allows at the same time feeding of motor 212 and thus the path according to section d and so on automatically for the e, f, g, h, i, l, m sections.
  • FIG. 6 shows in perspective and partial view member 40.
  • Lever 41 is connected to an insulating part 37 in which are buried three rings 60a, 60b, 600, only one of which 66a is seen in FIG. 6.
  • each ring 60a, 63b, 69c presents a contact projection 600'.
  • said insulating block is combined with a slab 62 having a nosing 63 which operation of will be hereinafter described.
  • Three thin columns 64, 65, 66 are provided; of which the 64 one bears three brushes 64a; the 65 one bears three brushes 65a; the 66 one bears three brushes 66a.
  • Said brushes are partially seen in FIG. 7.
  • the three 64a brushes are connected to a branch A of the E feedline while brushes 65a, and 66a are connected by a threewire cable 67 to which a cable 63 is branched thus feeding motor 12.
  • Cable 67 connects said brushes in such a way that the motor turns in one direction or in the the opposite direction according to the feed from 64a 66a brushes or from 64a65a brushes.
  • a transformer 69 may feed under control of switch 8 an electromagnetic switch 7 which allows feeding of 64a brushes.
  • Said electromagnetic switch 7 additionally controls a switch 08 which controls feeding of a second electromagnetic switch 07 similar to switch 7. In series to the feeding conductor of the electromagnetic switch 7 two switches are provided 5, 5a, the opening of which is controlled by a nosing 63 of plate 62.
  • the latter has two positioning recesses 62a, 621;, corresponding to the contact of projections 60d with, brushes 65a, 66a.
  • a pressure small roller 630 is inserted with elastic stress in such a way as to firmly position the plate 62.
  • Projections 70 cause temporary opening of switch 5 (5a) while the pressure roller 63c returns plate 62 and then lever 41 in the position preceding the arm 41a impact with a projection 70.
  • the feeding circuit of motor 212 it has to be noted that the same elements as for the previous circuit are applicable which have been marked with the same reference numbers preceded by numeral 0.
  • switch 08' is closed and thus electromagnetic switch 07 is fed which opens switch 8 and thus it does not allow feeding of electromagnetic switch 7 even if one of switches 5 is then closed.
  • An automatic machine for lapping of marble slabs and the like comprising a first carriage mounted to be displaced by first motor means in a first direction, a second carriage mounted sliding on said first carriage, and associated to second motor means able to displace it in a second direction perpendicular to said first direction, said second carriage being associated to an abrasive machine of known type, the said first carriage being connected to a motion distributing-reversing member of the said first motor means, said second carriage being combined with a further motion distributing-reversing member of the said second motor means, a first shaft being provided parallel to said first direction connected to the machine casing and provided with means to act correspondingly to said motion distributing-first member and a second shaft being provided parallel to said second direction, connected to said first carriage and provided with means able to act correspondingly the said motion distributing-reversing second member, said first and second shaft being kinematically connected to one another so as that the rotation of one causes the rotation of the other for a preestablished rotation angle due to the displacement of said second carriage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US849897A 1958-11-03 1959-10-30 Automatic machine for lapping of marble slabs and other similar stones Expired - Lifetime US3026653A (en)

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IT1239628X 1958-11-03

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DE (1) DE1151196B (fr)
FR (1) FR1239628A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254454A (en) * 1964-02-24 1966-06-07 Dolivio L Cetrangolo Automatic surface treating machine
US4495734A (en) * 1981-11-24 1985-01-29 Claas Saulgau Gmbh Grinding arrangement for chopping cutter of drum-chopper machine
WO1987001321A1 (fr) * 1985-09-10 1987-03-12 Alan Frederick Lindsey Production de verre plat poli
US4936052A (en) * 1986-04-05 1990-06-26 Nagase Iron Works Co., Ltd. Machine and method of grinding molding die
US4969914A (en) * 1988-01-18 1990-11-13 Yachiyo Micro Science Inc. Airplane window polishing device
US5702287A (en) * 1990-08-17 1997-12-30 Haney; Donald E. Sander with orbiting platen and abrasive
US20030124961A1 (en) * 2001-08-02 2003-07-03 Haney Donald E. Sanding machine incorporating multiple sanding motions
US7004818B1 (en) 1990-08-17 2006-02-28 Haney Donald E Sander with orbiting platen and abrasive
US20130149939A1 (en) * 2010-08-02 2013-06-13 Lg Chem, Ltd. Large scale plate and method for uniformly polishing large scale plate

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109015313B (zh) * 2018-08-30 2020-09-15 湖南永创机电设备有限公司 一种高世代平板显示玻璃抛光机及其加工玻璃的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038404A (en) * 1912-05-20 1912-09-10 Joseph F Maroni Polishing-machine.
US1773388A (en) * 1923-08-18 1930-08-19 Canning James Stone-surfacing machine
US2075369A (en) * 1935-09-30 1937-03-30 Stetler Lowell Marble refacing machine
US2326264A (en) * 1940-11-06 1943-08-10 Samuel T Haas Grinding machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1772818A (en) * 1928-10-02 1930-08-12 Ty Sa Man Machine Company Slab-cutting machine
FR734858A (fr) * 1932-04-07 1932-10-29 Condensation Application Mec Dispositif de commande automatique des déplacements du porte-outils d'une machine outil
US2694274A (en) * 1952-08-14 1954-11-16 Lukens Steel Co Brush type polishing machine
US2807123A (en) * 1955-05-11 1957-09-24 Latrobe Steel Co Grinding machines and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1038404A (en) * 1912-05-20 1912-09-10 Joseph F Maroni Polishing-machine.
US1773388A (en) * 1923-08-18 1930-08-19 Canning James Stone-surfacing machine
US2075369A (en) * 1935-09-30 1937-03-30 Stetler Lowell Marble refacing machine
US2326264A (en) * 1940-11-06 1943-08-10 Samuel T Haas Grinding machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3254454A (en) * 1964-02-24 1966-06-07 Dolivio L Cetrangolo Automatic surface treating machine
US4495734A (en) * 1981-11-24 1985-01-29 Claas Saulgau Gmbh Grinding arrangement for chopping cutter of drum-chopper machine
WO1987001321A1 (fr) * 1985-09-10 1987-03-12 Alan Frederick Lindsey Production de verre plat poli
US4833832A (en) * 1985-09-10 1989-05-30 Patrick Depuydt Production of polished flat glass
US4936052A (en) * 1986-04-05 1990-06-26 Nagase Iron Works Co., Ltd. Machine and method of grinding molding die
US4969914A (en) * 1988-01-18 1990-11-13 Yachiyo Micro Science Inc. Airplane window polishing device
US5702287A (en) * 1990-08-17 1997-12-30 Haney; Donald E. Sander with orbiting platen and abrasive
US7004818B1 (en) 1990-08-17 2006-02-28 Haney Donald E Sander with orbiting platen and abrasive
US20030124961A1 (en) * 2001-08-02 2003-07-03 Haney Donald E. Sanding machine incorporating multiple sanding motions
US7198557B2 (en) 2001-08-02 2007-04-03 Haney Donald E Sanding machine incorporating multiple sanding motions
US20130149939A1 (en) * 2010-08-02 2013-06-13 Lg Chem, Ltd. Large scale plate and method for uniformly polishing large scale plate
US8888560B2 (en) * 2010-08-02 2014-11-18 Lg Chem, Ltd. Method for uniformly polishing large scale plate

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DE1151196B (de) 1963-07-04
FR1239628A (fr) 1960-08-26

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