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EP0963812A1 - Dispositif pour le meulage fin et le polissage de matériaux durs - Google Patents

Dispositif pour le meulage fin et le polissage de matériaux durs Download PDF

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Publication number
EP0963812A1
EP0963812A1 EP98108596A EP98108596A EP0963812A1 EP 0963812 A1 EP0963812 A1 EP 0963812A1 EP 98108596 A EP98108596 A EP 98108596A EP 98108596 A EP98108596 A EP 98108596A EP 0963812 A1 EP0963812 A1 EP 0963812A1
Authority
EP
European Patent Office
Prior art keywords
arrangement according
arrangement
grinding
parts
treated
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Withdrawn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
EP98108596A
Other languages
German (de)
English (en)
Inventor
Sven Wallin
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
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP98108596A priority Critical patent/EP0963812A1/fr
Publication of EP0963812A1 publication Critical patent/EP0963812A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B24B41/0475—Grinding heads for working on plane surfaces equipped with oscillating abrasive blocks, e.g. mounted on a rotating head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports

Definitions

  • the present invention relates to a device for fine grinding and polishing stone and other hard materials, e.g. granite or marbles in the form of blocks, plates or sheets, by means of a machine including at least two arms performing a combination of a rotative and oscillating movement along a surface to be treated and each arm comprising an attachment arrangement for a curved grinding block to perform a grinding (by use of a self cleansing contact) defining a translating one-dimensional line contact along a surface to be treated.
  • a machine including at least two arms performing a combination of a rotative and oscillating movement along a surface to be treated and each arm comprising an attachment arrangement for a curved grinding block to perform a grinding (by use of a self cleansing contact) defining a translating one-dimensional line contact along a surface to be treated.
  • Materials such as granite are frequently used as floorings and as coverings on building frontages when it is desired to create an impressive surface or façade. Such a surface is, when finally mounted, supposed to be both decorative and maintainence free. It is therefore essential that the elements of for instance granite is so ground and polished that they both individually and mounted together create a planar surface.
  • Fine grinding and polishing blocks or floors of for instance granite or marble are today normally made manually, ie. a wooden plate having a grinding surface is pushed back and forth on the surface to be treated, the material of the grinding surface being gradualy consecutively changed to a finer one. During the final stage felt can be used as polishing material.
  • the object of the present invention is therefore to provide means for making it possible to use machines instead of being forced to use manually grind and polish, whereby a higher efficiency is obtained.
  • Another purpose of the invention is to achieve a total industrial concept when manufacturing for instance plates of granite or the like for covering floors or façades.
  • the attachment arrangement comprises at least two parts, joined to each other by means of a shaft parallel to said translating line, a first part thereof being attached to an arm and a second part thereof having a second attachment for a fine grinding or polishing block with a flat working surface, so that when said block is applied against the surface to be treated, a two-dimensional surface contact will occur.
  • the first part thereof is attached to each arm using a self-locking dove-tail arrangement.
  • the engagement between the parts becomes tighter and tighter the higher the rotational speed of the machine becomes.
  • the first and second parts of the arrangement comprise differently configurated dovetails thus elimination the risk that they are inadvertently mixed up.
  • FIG 3 and FIG 5 correspond to each other with the cross section arrows III'-III' and V'-V' respectively.
  • the arrangement according to the invention aims at achieving an elimination of the otherwise occurring oscillating movement of grinding elements, which are normally partially circular. Such an oscillating fine grinding or polishing movement will generate a wave-like surface which may not be directly visible for the bare eye. The effect may, however, be visible under certain light conditions. For other consequences of such a wave-like surface, reference is made to the previous description.
  • FIG 1 a schematic perspective view of the arrangement 1 according to the invention is shown to establish a better foundation for understanding the invention.
  • the arrangement 1 comprises a first part 2 to be connected to a grinding machine (not shown) for performing an oscillating and rotative movement along a surface to be treated, the oscillating part of which is to be eliminated in order to create a surface contact instead of a line contact, as described above.
  • the arrangement 1 also comprises a second part 3, joined to the first part 2 using a shaft 4, penetrating both parts 2,3.
  • Said second part 3 has a dovetail arrangement 8 for the attachment of a grinding or polishing segment 14, which is to maintain a surface contact with the surface to be polished.
  • the first part 2 is pivotally journalled on the shaft 4.
  • the parts 2, 3 are prestressed in relation to each other by means of using springs 13, into a position corresponding to that shown in FIG 1.
  • the second part 3 needs to have a proper starting position during commencement of its application to a surface to be treated.
  • the first part has a dovetail arrangement for its attachment to an arm of the machine. This is designated 7 since it has a different configuration than the arrangement 8 in order to avoid the risk of mixing them up.
  • Fig 2 is an end view of the arrangement.
  • the arrangement of the springs 13 is more clearly shown (even more clearly in FIG 3), as well as the different configurations of the dove-tail arrangements 7, 8.
  • FIG 3 a partial view from above as well as a partial cross section/view along the line III-III in Fig 2 is shown.
  • the above mentioned screw 16 is here shown to be flush with the upper surface 17 of the first part 2. The reason is that it has to fit in to a correspondingly flat surface of a corresponding dove-tail of the grinding machine (not shown).
  • the shaft 4 and its fitting 11 in general is visible.
  • the hole 19 must have this configuration since during the fine grinding or polishing movement a center point of the machine attachment corresponding to a point designated as 20, describes a vertical movement of approximately this height.
  • the pivot between the second part 3 and the shaft 4 takes place in an outer bushing 21, being lubricated in any suitable way.
  • Fig 5 being a partially sectioned side view of the arrangement 1 and being cross connected to FIG 3 as described above, shows the interrelationship between the different parts described above.
  • This illustration especially shows how the 3mm gap (resulting from the oblongness of the hole 19), that exists between the oblong hole 19 in the second part and the bushing 10 is arranged when the arrangement according to the invention is in a relieved condition. Said gap will during use be almost fully used to take up the vertical movement described above.

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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)
EP98108596A 1998-05-12 1998-05-12 Dispositif pour le meulage fin et le polissage de matériaux durs Withdrawn EP0963812A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98108596A EP0963812A1 (fr) 1998-05-12 1998-05-12 Dispositif pour le meulage fin et le polissage de matériaux durs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98108596A EP0963812A1 (fr) 1998-05-12 1998-05-12 Dispositif pour le meulage fin et le polissage de matériaux durs

Publications (1)

Publication Number Publication Date
EP0963812A1 true EP0963812A1 (fr) 1999-12-15

Family

ID=8231917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108596A Withdrawn EP0963812A1 (fr) 1998-05-12 1998-05-12 Dispositif pour le meulage fin et le polissage de matériaux durs

Country Status (1)

Country Link
EP (1) EP0963812A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928390A (en) * 1932-05-28 1933-09-26 American Floor Surfacing Mach Planetary type surfacing machine
US1932319A (en) * 1932-05-09 1933-10-24 American Floor Surfacing Mach Surface grinding machine
FR1208664A (fr) * 1958-11-14 1960-02-25 Appareil de polissage
DE4338054C1 (de) * 1993-11-08 1995-03-23 Gerhard Friedrich Schleifkopf
EP0727281A1 (fr) * 1995-02-16 1996-08-21 Porter-Cable Corporation Ponçeuse motorisée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932319A (en) * 1932-05-09 1933-10-24 American Floor Surfacing Mach Surface grinding machine
US1928390A (en) * 1932-05-28 1933-09-26 American Floor Surfacing Mach Planetary type surfacing machine
FR1208664A (fr) * 1958-11-14 1960-02-25 Appareil de polissage
DE4338054C1 (de) * 1993-11-08 1995-03-23 Gerhard Friedrich Schleifkopf
EP0727281A1 (fr) * 1995-02-16 1996-08-21 Porter-Cable Corporation Ponçeuse motorisée

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