EP0688635B1 - Meule stratifiée pour l'usinage des bords de plaques de marbre, granit ou similaire - Google Patents

Meule stratifiée pour l'usinage des bords de plaques de marbre, granit ou similaire Download PDF

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Publication number
EP0688635B1
EP0688635B1 EP95830057A EP95830057A EP0688635B1 EP 0688635 B1 EP0688635 B1 EP 0688635B1 EP 95830057 A EP95830057 A EP 95830057A EP 95830057 A EP95830057 A EP 95830057A EP 0688635 B1 EP0688635 B1 EP 0688635B1
Authority
EP
European Patent Office
Prior art keywords
layer
grinder
main body
elastically deformable
abrasive tape
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 - Lifetime
Application number
EP95830057A
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German (de)
English (en)
Other versions
EP0688635A1 (fr
Inventor
Serafino Ghinelli
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.)
GHINES Srl
Original Assignee
GHINES Srl
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Filing date
Publication date
Application filed by GHINES Srl filed Critical GHINES Srl
Priority to SI9530266T priority Critical patent/SI0688635T1/xx
Publication of EP0688635A1 publication Critical patent/EP0688635A1/fr
Application granted granted Critical
Publication of EP0688635B1 publication Critical patent/EP0688635B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/12—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising assemblies of felted or spongy material, e.g. felt, steel wool, foamed latex

Definitions

  • the invention relates to a stratified grinder for working edges of slabs of marble, granite and the like, of the general type already known from doc. EP 0281050, comprising a main body keyable on a rotary chuck, and having a lateral surface which is shaped complementarily to the edge of the slab, and comprising a tract of abrasive tape superposed on the lateral surface of the main body wound about said body as an open ring having a gap between the opposite ends of said abrasive tape; a layer of elastically deformable material interpositioned between and adherent to the lateral surface of the main body and to the abrasive tape such as to render said main body and said abrasive tape reciprocally solidly constrained.
  • grinders of the above-described type are largely used especially for work involving relatively little removal of material, such as for example operations of smoothing, shining and lapping of the edge surfaces.
  • the abrasive tape for example criss-cross patterned
  • the length of tape corresponds exactly to the perimeter length of the main body, to which it will later be attached.
  • a certain discontinuity in the cutting surface, in the form of a step is manifested at the point where the two ends of the tape meet on the circular body.
  • a plurality of similar steps is further made where the work surface of the grinder must exhibit a curved profile in order to be able to work on rounded edges of the slab.
  • the lateral edges of the abrasive tape are cut, and when the tape is stretched on the surface of the grinder body, said edges distance one from the other circumferentially thereon, creating a series of further step-interruptions arranged along the periphery of the grinder.
  • Both the step at the ends of the tape, caused either by excessive length or by excessive shortness of the tape, and the lateral edge steps are the cause of considerable drawbacks, manifested especially during working of a corner where two contiguous slab edges meet; the gaps caused by the steps are invaded by the slab edges and the involved portion of tape can be torn.
  • the aim of the present invention is to eliminate the above-mentioned drawbacks in the prior art by totally removing the discontinuities in the edges of the abrasive tape due to the positioning of same on the main body of the grinder.
  • document WO 95/08418, a document according to Art 54 (3) EPC discloses coating the body of the grinder with elements of flexible abrasive material, by chemical welding. The gaps between the flexible elements are filled with a material different from the one of the body of the grinder.
  • the present invention proposes to manufacture the grinder of claim 1 by the method of claim 5.
  • the layer of elastically deformable material covers the opposite ends of the length of abrasive tape, such that the lateral edges thereof are incorporated in a stratified strip having a continuous abrasive surface.
  • the fundamental advantage of the grinder realized according to the invention consists essentially in a greater grinder working life, resulting in considerable economic savings.
  • the invention essentially comprises a stratified grinder 10 for working an edge 4 of a slab 5 of marble, granite and the like.
  • the grinder 10 comprises a main body 1 made in metal and axially keyable on a rotary chuck 2 and having a lateral surface 3 shaped complementarily to the edge 4 of a slab 5.
  • the grinder 10 comprises a tract of abrasive tape 6 superposed on a lateral surface 3 of the main body 1 and ring-wound thereon, and closed at opposite ends 7 of said abrasive tape 6.
  • a layer 11 of elastically deformable material made of rubber or an elastomer having like characteristics, is interpositioned. This layer 11 adhers both to the lateral surface 3 of the main body 1 and to the abrasive tape 6 such that said main body 1 and said abrasive tape 6 are rendered solidly reciprocally constrained.
  • the layer 11 of elastically deformable material covers the opposite ends 7 of the abrasive tape 6, incorporating them in a stratified strip 12 provided with a continuous abrasive surface 16 (see figure 2).
  • Figure 4 shows how the abrasive tape 6, before the final construction of the grinder 10, is provided with a plurality of cuts 20 made at lateral edges 9 thereof and having the aim of creating an optimal adaptation of the lateral surface 3 of the main body 1 of the grinder 10 when said main body 1, as shown in figures 1, 2 and 3, exhibits curved generatrices shaped complementarily to the edge 4 of the slab 5.
  • the layer 11 of elastically deformable material covers also the cut lateral edges 9 of the strip of abrasive tape 6, incorporating said cut lateral edges 9 into the stratified strip 12 and creating a continuous surface thereof.
  • a grinder 10 according to the invention can be obtained with a procedure utilizing parts as schematically represented in the figure and constituted by the following operative phases:
  • the above-described process utilizes a layer 11 of vulcanized rubber, and can be substituted with equivalent results and similar equipment using a conventional injection process of the material to be used for the layer 11.
  • the invention is susceptible to numerous variations and modifications, all entering within the field of the inventive concept, which concept is herein related to specific examples of an embodiment of a grinder 11, as shown in figures 1, 2 and 3.
  • the grinders realizable according to the present invention can, however, exhibit various geometrical shapes and sizes for realizing, for example, convex edges, concave edges and/or mixed-shape edges, some of which are illustrated in figure 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (5)

  1. Une meule stratifiée pour l'usinage des bords de plaques de marbre, granit ou similaire, comprenant un corps principal (1) pouvant être emboíté sur un mandrin rotatif (2), et ayant une surface latérale (3) dont la forme est complémentaire d'un bord (4) d'une plaque (5), et comprenant une longueur de ruban abrasif (6) qui est superposée à la surface latérale (3) du corps principal (1) et enroulée autour de ce même corps principal (1) sous la forme d'un anneau ouvert de façon à laisser un espace entre les extrémités opposées (7) du ruban abrasif (6) en question ; une couche (11) de matériau élastiquement déformable étant interposée entre la surface latérale (3) du corps principal (1) et le ruban abrasif (6), et adhérant à cette même surface latérale (3) et au ruban abrasif (6), de façon à ce que ledit corps principal (1) et ledit ruban abrasif (6) soient fermement maintenus l'un à l'autre ; caractérisée en ce que ladite couche (11) de matériau élastiquement déformable a une portion qui remplit au moins l'espace entre lesdites extrémités opposées (7) de la longueur de ruban abrasif (6) de façon à former une bande stratifiée en anneau fermé (12) présentant une surface continue (16).
  2. Meule selon la revendication 1, où ladite longueur de ruban abrasif (6) présente des bords latéraux coupés (9) pour permettre au ruban (6) d'épouser une surface latérale courbe (3) du corps (1) susmentionné, caractérisée en ce que ladite couche (11) de matériau élastiquement déformable remplit les espaces interposés entre les bords latéraux coupés (9) du ruban abrasif (6), incorporant ce même ruban (6) dans ladite bande stratifiée (12).
  3. Meule selon la revendication 1, caractérisée en ce que ladite couche (11) de matériau élastiquement déformable est en caoutchouc.
  4. Meule selon la revendication 1, caractérisée en ce que ladite couche (11) de matériau élastiquement déformable est en élastomère.
  5. Un procédé pour réaliser la meule (10) selon la revendication 1, caractérisé en ce qu'il comprend les phases suivantes :
    placer au moins une longueur de ruban abrasif (6) sur une surface intérieure (13) de deux demi-matrices (14) et (15) chauffées, dont la surface intérieure (13) a une forme complémentaire de la surface latérale (3) du corps principal (1) susmentionné ;
    répandre une couche (11) de matériau élastiquement déformable à l'état semi-liquide sur la surface latérale (3) du corps principal (1), laquelle couche adhérera par la suite à ladite surface latérale (3) ;
    fermer les deux demi-matrices (14) et (15) autour du corps principal (1), de façon à ce que le ruban abrasif (6) s'enfonce dans la couche (11) de matériau élastiquement déformable ;
    solidifier la couche (11) de matériau élastiquement déformable de façon à bien unir le ruban abrasif (6) et la couche (11) de matériau élastiquement déformable.
EP95830057A 1994-05-23 1995-02-24 Meule stratifiée pour l'usinage des bords de plaques de marbre, granit ou similaire Expired - Lifetime EP0688635B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530266T SI0688635T1 (en) 1994-05-23 1995-02-24 A stratified grinder for working edges of slabs of marble, granit and the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO940241 1994-05-23
IT94BO000241A ITBO940241A1 (it) 1994-05-23 1994-05-23 Mola a costituzione stratificata per la lavorazione di bordi di lastre di marmo, granito e affini.

Publications (2)

Publication Number Publication Date
EP0688635A1 EP0688635A1 (fr) 1995-12-27
EP0688635B1 true EP0688635B1 (fr) 1999-04-28

Family

ID=11339847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95830057A Expired - Lifetime EP0688635B1 (fr) 1994-05-23 1995-02-24 Meule stratifiée pour l'usinage des bords de plaques de marbre, granit ou similaire

Country Status (6)

Country Link
EP (1) EP0688635B1 (fr)
CA (1) CA2145140A1 (fr)
DE (1) DE69509303T2 (fr)
ES (1) ES2132584T3 (fr)
IT (1) ITBO940241A1 (fr)
SI (1) SI0688635T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111451869A (zh) * 2020-05-08 2020-07-28 吴学彪 一种卡芯片加工设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6120569A (en) * 1998-09-23 2000-09-19 Kuo; Ching-An Method for production and structure of stone pattern processing mills
WO2008035383A1 (fr) * 2006-09-20 2008-03-27 Mauro Di Mattia Dispositif doté d'inserts permettant de travailler des pierres dures et similaires
FR2968587B1 (fr) * 2010-12-10 2014-04-11 Snecma Brosse abrasive avec surface laterale concave

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3313650A1 (de) * 1983-04-15 1984-10-18 Reich Spezialmaschinen GmbH, 7440 Nürtingen Vorrichtung zur herstellung eines schleifkoerpers
ATE53324T1 (de) * 1986-04-17 1990-06-15 Carborundum Schleifmittel Verfahren zur herstellung eines elastischen schleifkoerpers.
IT1202644B (it) * 1987-03-06 1989-02-09 Pierluigi Ravelli Mola abrasiva per la sagomatura e finitura superficiale di materiali lapidei del tipo marmo,granito e simili
IT232262Y1 (it) * 1993-09-24 1999-12-17 Quintilio Lupi Mola a base elastica per la levigatura e lucidatura di profili toroidali in materiali duri.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111451869A (zh) * 2020-05-08 2020-07-28 吴学彪 一种卡芯片加工设备

Also Published As

Publication number Publication date
DE69509303D1 (de) 1999-06-02
ITBO940241A1 (it) 1995-11-23
EP0688635A1 (fr) 1995-12-27
CA2145140A1 (fr) 1995-11-24
DE69509303T2 (de) 1999-11-04
ITBO940241A0 (it) 1994-05-23
SI0688635T1 (en) 1999-10-31
ES2132584T3 (es) 1999-08-16

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