EP0451333A2 - Gerät zum Schleifen der Ränder von Glasscheiben - Google Patents

Gerät zum Schleifen der Ränder von Glasscheiben Download PDF

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Publication number
EP0451333A2
EP0451333A2 EP90121913A EP90121913A EP0451333A2 EP 0451333 A2 EP0451333 A2 EP 0451333A2 EP 90121913 A EP90121913 A EP 90121913A EP 90121913 A EP90121913 A EP 90121913A EP 0451333 A2 EP0451333 A2 EP 0451333A2
Authority
EP
European Patent Office
Prior art keywords
drive shaft
grindstone
glass sheet
grinding
adjusting
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Withdrawn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
EP90121913A
Other languages
English (en)
French (fr)
Other versions
EP0451333A3 (en
Inventor
Kimmo Juho Ikola
Kimmo Ensio Stenman
Erkki Paavo Johannes Yli-Vakkuri
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.)
Tamglass Engineering Oy
Original Assignee
Tamglass Oy
Tamglass Engineering Oy
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 Tamglass Oy, Tamglass Engineering Oy filed Critical Tamglass Oy
Publication of EP0451333A2 publication Critical patent/EP0451333A2/de
Publication of EP0451333A3 publication Critical patent/EP0451333A3/en
Withdrawn legal-status Critical Current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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/04—Headstocks; Working-spindles; Features relating thereto
    • 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

  • the present invention relates to an apparatus for grinding the edge of a glass sheet, said apparatus comprising a substantially horizontal glass sheet carrying table, a rotatable drive shaft, a grindstone attached to the drive shaft and having its periphery formed with one or more V- or U-shaped grooves, the grindstone being adapted for vertical movement relative to the plane of the carrying table.
  • This type of apparatus is known e.g. from DE patent publications 2 127 298 and 3 706 886.
  • a grindstone along with its driving motor is vertically movable, whereby the masses to be moved are great and the adjustment accuracy suffers.
  • Patent publication DE 2 127 298 a glass sheet is supported between ball-coated plates and the plates are adjustable relative to a framework. Also in this case the adjustment necessarily involves the movement of great masses and the adjustment is slow and tedious to perform.
  • An object of the invention is to provide an apparatus adapted for the vertical adjustment of a grindstone, wherein the masses to be moved are small and which provides for a high adjustment precision and whereby the adjusting movements can be performed readily and quickly.
  • reference numeral 1 designates a grindstone having its periphery provided with a V-shaped grinding groove 2.
  • a glass sheet 3 or 4 is carried on a table 5 which is stationary in vertical direction.
  • the plane of symmetry of grinding groove is brought to coincide with the centre line of the edge of glass sheet 3 or 4.
  • moving grindstone 1 or table 5 in horizontal direction until the rim edges of glass sheet 3 or 4 come to contact with the flanks of grinding groove 2.
  • Grindstone 1 is rotated around the vertical axis while moving it along the edge of glass sheet 3 or 4.
  • the table is moved in horizontal direction. Grinding table 5 may also rotate.
  • the thickness of glass sheet 4 is e.g. 2 mm and the thickness of glass sheet e.g. 2,5 mm.
  • a grindstone 1 is moved in vertical direction, i.e. in the direction orthogonal to the plane of the glass sheet, either upwards to a position II or downwards to a position I depending on whether the new glass sheet is thicker or thinner.
  • a thinner glass sheet 4 which is carried on a table 5 lying on the same level as the right-hand side table.
  • the question can be about a common stationary table 5 for effecting the grinding of the 2,0 mm and 2,5 mm thick glass sheets included in a pair of glass sheets on an automatic line alternately in successive stages I and II.
  • the grindstone 1 is placed on a level for bringing its grinding groove 2 symmetrically into contact with the side edges of glass sheet 3 or 4.
  • the necessary shifting distance for a glass sheet is half of the difference in glass sheet thickness, e.g. in this case 0,25 mm.
  • fig. 2 differs from fig. 1 in that grindstone 1 is provided with two grinding grooves 2' which are U-shaped.
  • the narrower groove 2' can be used for form grinding the edge of thinner glass sheets 4 and the wider groove 2' is used for form grinding the edge of a thicker glass sheet 3.
  • the shape and number of grinding grooves in grindstone 1 can vary.
  • the shifting of grindstone 1 in vertical direction is effected by only shifting grindstone 1 and its driving shaft 7, as explained in more detail hereinafter with reference to figs. 3 and 4.
  • Grindstone 1 is secured to the bottom end of driving shaft 7.
  • Drive shat 7 is journalled to a body 6 through the intermediary of a tubular axle 8 by means of bearings 9.
  • the relative rotating motion of drive shaft 7 and tubular axle 8 is transmitted by means of torque rods 10 which permit the axial movement of drive shaft 7 and its associated grindstone 1 relative to tubular axle 8.
  • the top end of drive shaft 7 is fitted with a belt pulley 11 rotated by a drive motor (not shown) through the intermediary of a belt 12.
  • drive shaft 7 is engaged through the intermediary of a rotary joint 13 by a piston rod 15 extending through a pneumatic cylinder 14.
  • Pneumatic cylinder 14 is fitted in a bowl-shaped portion 16 which is fastened to body 6 by means of its external thread 17.
  • the bottom of bowl-shaped portion is provided with a set screw 18 which limits the upward movement of the piston of cylinder 14 by hitting the top end of piston rod 15.
  • the upper and lower position of a grindstone can be adjusted at high percision and, after completing the adjustment, the grindstone can be shifted rapidly and automatically between positions I and II.
  • the vertical adjustment of grindstone 1 provided with a single groove 2, 2' can correspond to a setting range from 1,5 mm glass thickness to 6 mm thickness, in which case the adjustment distance of a grindstone is 2,25 mm.
  • Such a small adjustment distance can be readily achieved with the solution shown in fig. 3.
  • a corresponding structural design, with slightly modified dimensions, can also be used for fulfilling the adjustment requirement shown in fig. 2.
  • the power transmission to drive shaft 7 can also be effected by means of pinions as this also allows the axial movement of drive shaft 7 relative to a driving motor.

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)
EP19900121913 1990-03-29 1990-11-15 Apparatus for grinding the edge of a glass sheet Withdrawn EP0451333A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI901573 1990-03-29
FI901573A FI84564C (fi) 1990-03-29 1990-03-29 Anordning foer slipning av en glasskivas kant.

Publications (2)

Publication Number Publication Date
EP0451333A2 true EP0451333A2 (de) 1991-10-16
EP0451333A3 EP0451333A3 (en) 1992-03-04

Family

ID=8530150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900121913 Withdrawn EP0451333A3 (en) 1990-03-29 1990-11-15 Apparatus for grinding the edge of a glass sheet

Country Status (3)

Country Link
EP (1) EP0451333A3 (de)
JP (1) JP2877925B2 (de)
FI (1) FI84564C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1063054A3 (de) * 1999-06-21 2002-01-30 Z. BAVELLONI S.p.A. Doppelseitige Kantenschleifmaschine für glas- oder steinartigiges Flachmaterial und desgleichen
WO2011031506A3 (en) * 2009-08-27 2011-06-16 Corning Incorporated Apparatus and method for precision edge finishing
CN107263321A (zh) * 2017-05-12 2017-10-20 郑州磨料磨具磨削研究所有限公司 砂轮外圆加工方法及加工装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100453637B1 (ko) * 2002-07-11 2004-10-20 남상권 궁형연삭기용 연삭축의 전후조정장치

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7425126U (de) * 1973-08-01 1974-10-24 Bavelloni Z & Figli Sas Vorrichtung für die selbsttätige Axialverstellung eines rotierenden Werkzeugs in einer Maschine für die Bearbeitung von Glasscheiben
ATE4872T1 (de) * 1980-02-08 1983-10-15 Officina Meccanica Zanetti Aristodemo & C. S.A.S. Kantenschleifmaschine fuer plattenfoermige werkstuecke, insbesondere glas- oder steinplatten.
DE3706886A1 (de) * 1987-03-04 1988-09-22 Bielefelder Union Bruno Koch G Kantenschleifmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1063054A3 (de) * 1999-06-21 2002-01-30 Z. BAVELLONI S.p.A. Doppelseitige Kantenschleifmaschine für glas- oder steinartigiges Flachmaterial und desgleichen
US6398629B1 (en) 1999-06-21 2002-06-04 Z. Bavelloni S.P.A. Bilateral edge-type machine for edge-machining glass or stone-like plate materials and the like
WO2011031506A3 (en) * 2009-08-27 2011-06-16 Corning Incorporated Apparatus and method for precision edge finishing
JP2013503049A (ja) * 2009-08-27 2013-01-31 コーニング インコーポレイテッド 精密エッジ仕上げのための装置及び方法
CN107263321A (zh) * 2017-05-12 2017-10-20 郑州磨料磨具磨削研究所有限公司 砂轮外圆加工方法及加工装置
CN107263321B (zh) * 2017-05-12 2019-03-22 郑州磨料磨具磨削研究所有限公司 砂轮外圆加工方法及加工装置

Also Published As

Publication number Publication date
JPH03281160A (ja) 1991-12-11
FI84564B (fi) 1991-09-13
FI901573A7 (fi) 1991-09-13
FI84564C (fi) 1991-12-27
JP2877925B2 (ja) 1999-04-05
FI901573A0 (fi) 1990-03-29
EP0451333A3 (en) 1992-03-04

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