EP0373158A1 - Procede permettant d'egriser les bords de feuilles de verre - Google Patents

Procede permettant d'egriser les bords de feuilles de verre

Info

Publication number
EP0373158A1
EP0373158A1 EP87906320A EP87906320A EP0373158A1 EP 0373158 A1 EP0373158 A1 EP 0373158A1 EP 87906320 A EP87906320 A EP 87906320A EP 87906320 A EP87906320 A EP 87906320A EP 0373158 A1 EP0373158 A1 EP 0373158A1
Authority
EP
European Patent Office
Prior art keywords
sheet
grinders
edge
sheets
rectilinear
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Withdrawn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
EP87906320A
Other languages
German (de)
English (en)
Inventor
Aldo Lanzetta
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
Publication of EP0373158A1 publication Critical patent/EP0373158A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00—Subject matter not provided for in other groups of this subclass
    • 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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • 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
    • 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
    • B24B9/08—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 of glass
    • B24B9/10—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 of glass of plate glass

Definitions

  • Machines for grinding the edges of sheets of glass are known to adopt wheels coated with diamond powder, said wheels be ⁇ ing made to rotate by electric motors and arbors, and trans- lating along the edges of the sheet.
  • Subject of the invention is a process for grinding the edges of sheets of glass, particularly small and very small sheets, in which the processing mo.ement is made by the sheet.
  • the grinders are fixed or are freely rotating.
  • Fixed grinders have one or more longitudinal grooves of a constant concave cross section, enclosing the edges of the sheet of glass, and are straight or curved according to whe- ther the sides of the sheet are straight or curved.
  • Rotating grinders are disc shaped, grinding being done by their circular faces, and can freely rotate round an axis which is not perpendicular to the plane on which the sheet slides, but is perpendicular to the straight edges of said sheet at a certain distance from it. Due to friction a translation motion is set up on said circular face in the zone of contact between the sheet and the face of the grinder, said translation being the combined result of motion according to the direction of the sheet and motion perpendicular to said direction.
  • the fixed rectilinear grinders can be made to translate around the geometrical axis of their longitudinal groove to reach the preferred position in relation to the edge of the sheet.
  • the circular processing faces of freely rotating grinders are perpendicular or oblique to the sheet itself and are parallel to its direction of translation.
  • Suitable devices are provided to adjust said position as desired. If necessary a clutch can be used with the grinders to re ⁇ gulate pressure of abrasion.
  • the processing movement is given to the sheet by hand or by mechanical means or even by vibrating means as the case may be.
  • Contact relative to pressure between grinder and sheet is obtained by elastic means such as rubber pads and the like placed between the grinders and their supporting structures or other equivalent means.
  • Grinders are preferably ' placed in pairs on one or other side of the sheet, or else there is a single grinder on one side of the sheet while a suitable type of fixed support is provided at the opposite edge, said support being suitably devised to allow the sheet to move freely.
  • the distance between opposing grinders or between the single grinder and the above mentioned support may be varied as re ⁇ quired to facilitate easy introduction of the sheet between the opposing parts and to allow accurate regulation of re ⁇ ciprocal pressure between grinders and sheet.
  • the processing motion is given to the sheet by a ring-wise conveyor belt or similar means on whose surface the sheet is laid, said belt having raised ridges to press against the back edge of the sheet and push it forward.
  • FIG. l Perspective view of apparatus with fixed grinders.
  • Fig.2. Detail of the device for adjusting a rectilinear grinder around the axis of its longitudinal groove.
  • Fig.3. Perspective view of apparatus with freely rotating disc grinders.
  • Fig. Apparatus for grinding curved sheets.
  • the apparatus ( 10) comprises the frame (11) for the pair of rectilinear grinders (13), (14) and the device (12) for mech ⁇ anized motion of sheets of glass like (15), (16).
  • the frame (11) comprises the longitudinal and parallel side pieces (17), (18) fixed to the bed (32)
  • the side piece ( 17) On its support (21), the side piece ( 17) carries the recti ⁇ linear grinder (13) with semicircular groove (22) coated with diamond powder, with interposed rubber pad ( 19).
  • the side piece (18) By means of the horizontal, transversal rack rods (25), (26) the side piece (18) ⁇ upports the rectilinear block (23) in which the grinder (14) with diamond powder coated groove (24) is housed ⁇ t rubber pad (20) being interposed.
  • Axial movement of rods (25), (26) is determined by pinions (27), (28) fixed to the rod (29) revolving freely on sup ⁇ ports (30), (31) of the side piece (18) allowing the distance between the pair of grinders (13), (14) to be adjusted.
  • Rotation of the rod (29) can be obtained by means of the handwheel (34) and the worm screw-cog wheel group (35). The worm screw is fixed to the handwheel while the cog wheel is fixed to the rod (29).
  • the device (12) for translation of sheets of glass like (15) and (16) comprises the ring-type conveyor belt (40).
  • Said belt is made with ribbing on its supper surface (43) to push forward the sheets and with teeth underneath (44) which fit into the grooves (45), (46) of the rollers (41) (42) supporting the belt at its two ends.
  • roller (41) is fixed to the shaft (33) with supports (36), turned by the ratiomotor (37).
  • Roller (42) is fixed to the shaft (47) with support (48).
  • Ttie supports (36), (48) are fixed to the bed (32).
  • Fig. 2 shows a device (50) which, coupled to another simi ⁇ lar one, is suitable for rotating one of the two grinders (51) around the geometrical axis of its diamond powder coa ⁇ ted semicircular groove (52) to allow grinding to proceed over the various zones of the edge (54) of the sheet (53) of glass .
  • Fig. 3 shows a variation of the grinding process with the processing movement still being made by the sheets (70), (71), consisting in the fact that the discoid grinders
  • the ratiomotor (95) automatically draws the sheets forward.
  • the grinders can revolve round the shaft (96) supported by columns (97) on the bed (94).
  • an adjustable clutch (98) is provided.
  • the position of the discoid grinders: in relation to the edges of the sheets can be adjusted both parallel one to the other and thus in relation to their distance from the sheets, and also their orientation in relation to the plane of translation of the sheets.
  • Fig. shows a variant of the apparatus suitable for grind_ ing round pieces of glass.
  • the frame (120) with bed (121) comprises the support(122) for the shaft rotating (123) by action of the belt trans ⁇ mission (124) and ratiomotor (125).
  • the rotating shaft comprises the table (126) on which the round sheet (127) is placed.
  • the sheet adheres to the plate by action of the rubber presser (130) subjected to action of the ball bearing (131) pressed against the sheet (127) by the fluodynamic piston(132) acting on the rod (133) guided and supported by the bracket (134) fixed to the frame (120), by means of lever (142).
  • the semicircular grinders (135), (136) comprise the shoes
  • the shoes are supported-, by means of the tabs (139) by the levers (140) pivoted in the intermediate points (141)round two pins supported by the frame (120).
  • Motion is straighter on the straight sheets and more even on round sheets any irregularities or bulges on the edges being eliminated prior ..to., beginning the movement. Elimination of cavities and imperfections on the edges of sheets caused by the ordinary moving round grinders. Higher precision in processing as there are none of the vibrations present with present types of rotating grinders; especially in the case of very thin sheets, breakages due to these vibrations are practically eliminated. In the case of thin mirrors splintering at the silver-backed edges is avoided as it becomes possible to use grinders having groove diameters approaching the thickness of the mirror whose edges are therefore closely embraced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Procédé permettant d'égriser les bords de feuilles en verre (15), (16), notamment de petites feuilles, grâce auquel le mouvement de traitement est rélisé, manuellement ou mécaniquement, par les feuilles (15), (16) et non par les ébarbeurs (13), (14) lesdits ébarbeurs étant soit linéaires et fixes, avec une section transversale courbée, constante, enveloppant le bord de la feuille (15), (16), soit en forme de disque, se déplaçant librement autour d'un axe géométrique placé à une certaine distance de la feuille, non perpendiculaire au plan de glissement de la feuille, mais perpendiculaire à son bord rectiligne.
EP87906320A 1987-05-25 1987-09-18 Procede permettant d'egriser les bords de feuilles de verre Withdrawn EP0373158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8720654A IT1215519B (it) 1987-05-25 1987-05-25 Procedimento per la molatura in costa delle lastre di vetro
IT206548 1987-05-25

Publications (1)

Publication Number Publication Date
EP0373158A1 true EP0373158A1 (fr) 1990-06-20

Family

ID=11170101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906320A Withdrawn EP0373158A1 (fr) 1987-05-25 1987-09-18 Procede permettant d'egriser les bords de feuilles de verre

Country Status (5)

Country Link
EP (1) EP0373158A1 (fr)
JP (1) JPH02504243A (fr)
AU (1) AU8032287A (fr)
IT (1) IT1215519B (fr)
WO (1) WO1988009242A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110774119A (zh) * 2019-11-07 2020-02-11 林有艺 一种全自动刻面水晶玻璃磨面机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3334609B2 (ja) * 1998-05-29 2002-10-15 信越半導体株式会社 薄板縁部の加工方法および加工機
US6306015B1 (en) * 2000-01-03 2001-10-23 Machine And Wheels, Inc. Method for grinding rigid materials
US20070138228A1 (en) * 2005-12-16 2007-06-21 Brown James W Method and apparatus for finishing a glass sheet
CN104108060A (zh) * 2014-07-04 2014-10-22 湖州水平玻璃有限公司 一种玻璃磨边机
CN110883641B (zh) * 2019-12-06 2021-04-02 海龙教育设备集团有限公司 一种中空吹塑课桌椅的边缘打磨装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383638A (en) * 1943-07-31 1945-08-28 James Knights Company Means for multiple edging and squaring radio quartz crystals
US2355601A (en) * 1944-03-22 1944-08-08 Roger G Cudini Burring machine
US2475110A (en) * 1947-04-23 1949-07-05 Leo E Pryor Knife sharpener
US2476754A (en) * 1947-11-10 1949-07-19 John W Moore Crystal grinding machine
US2948006A (en) * 1958-06-02 1960-08-09 Western Electric Co Apparatus for cleaning strip material
US2900768A (en) * 1958-09-22 1959-08-25 Scott & Fetzer Co Annular knife sharpener
GB1018221A (en) * 1961-04-26 1966-01-26 Service Eng Ltd Improvements in or relating to machines suitable for use in the manufacture of pottery
US3641991A (en) * 1970-04-27 1972-02-15 Arno Haber Ceramic ware deburring machine and dressing heads
US4060937A (en) * 1976-09-27 1977-12-06 Morse Safety Products Co. Grinder for glass plates or the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8809242A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110774119A (zh) * 2019-11-07 2020-02-11 林有艺 一种全自动刻面水晶玻璃磨面机
CN110774119B (zh) * 2019-11-07 2020-11-24 浦江县凯帝服装饰品有限公司 一种全自动刻面水晶玻璃磨面机

Also Published As

Publication number Publication date
WO1988009242A1 (fr) 1988-12-01
IT8720654A0 (it) 1987-05-25
IT1215519B (it) 1990-02-14
AU8032287A (en) 1988-12-21
JPH02504243A (ja) 1990-12-06

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