EP0193516A1 - Schleifscheibe zur Bearbeitung und zum Polieren von Gläsern - Google Patents

Schleifscheibe zur Bearbeitung und zum Polieren von Gläsern Download PDF

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Publication number
EP0193516A1
EP0193516A1 EP86870026A EP86870026A EP0193516A1 EP 0193516 A1 EP0193516 A1 EP 0193516A1 EP 86870026 A EP86870026 A EP 86870026A EP 86870026 A EP86870026 A EP 86870026A EP 0193516 A1 EP0193516 A1 EP 0193516A1
Authority
EP
European Patent Office
Prior art keywords
glass
rim
grinding wheel
grinding
flattering
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.)
Granted
Application number
EP86870026A
Other languages
English (en)
French (fr)
Other versions
EP0193516B1 (de
Inventor
Honoré Joseph Lambot
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.)
Diamant Boart NV SA
Original Assignee
Diamant Boart NV SA
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
Priority claimed from BE0/214578A external-priority patent/BE901840A/fr
Application filed by Diamant Boart NV SA filed Critical Diamant Boart NV SA
Priority to AT86870026T priority Critical patent/ATE51354T1/de
Publication of EP0193516A1 publication Critical patent/EP0193516A1/de
Application granted granted Critical
Publication of EP0193516B1 publication Critical patent/EP0193516B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B24D7/02—Wheels in one piece
    • 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
    • B24B9/12—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 hollow glassware, e.g. drinking glasses, preserve jars, television picture tube viewing panels
    • 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
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face

Definitions

  • the present invention relates to a grinding wheel intended for flattering the edge of a glass with the aid of a self-loading machine-flattering-chamfering-polishing machine, comprising a rotary gripping head intended to grip the glass by its base and to drive it in rotation, a means for feeding this gripping head and this glass in rotation towards two grinding or polishing elements running in opposite directions, driven by floating motors, constantly distant from each other , and arranged symmetrically and secantly with respect to the direction of this application, these elements being further on the one hand in the free state, situated in a plane substantially perpendicular to this direction and on the other hand, during the flattering, slightly bent by their contact with the rim of the glass in diametrically opposite portions of this rim
  • the grinding or polishing element is formed therein by a rotary grinding wheel having a working surface perpendicular to its axis of rotation.
  • the flitting glass is applied by its rim secantly against the abrasive surface of each of the packs, so as to undergo grinding according to two diametrically opposed contact arcs.
  • the glass is substantially kept vertical and rotated about a stationary vertical axis during flattering.
  • Belgian patent No. 670,504 discloses a machine for flipping glasses, with automatic loading comprising a head for gripping a glass by its base, in particular by its foot, a means for rotating the gripping head and glass around the axis thereof, a means for feeding this gripping head in rotation towards the above-mentioned grinding or polishing tool and applying this glass in rotation against this rotary tool.
  • Said tool is provided with two flat grinding or polishing discs. These discs, which are abrasive and flexible, are constantly distant from each other. They are arranged symmetrically with respect to the direction of application of the glass on them. They are, in the free state, located in the same plane roughly perpendicular to this direction. The planes which these discs determine in the free state, form between them a slight angle so as to favor a progressive grinding by each of the two grinding wheels along the intersecting arcs of contact of the drinker with said grinding stones.
  • the pairs of grinding wheels intended for the same glass are advantageously inclined relative to one another and relative to the axis of rotation of the glass, so as to that their axis of rotation is substantially concurrent with the axis of symmetry of the glass.
  • the part of the frame which supports a grinding wheel is orientable relative to the gripping head of the glass, in the direction of supply of the glass towards the grinding wheel.
  • Each grinding or polishing disc is mounted on a rotating plate, the face of which receives the disc, is furnished with a succession of flanges of increasing diameter made of thin spring steel so as to stiffen the grinding wheel progressively when we get closer to the axis.
  • This configuration makes it possible to predetermine an abrasive power during flattering, by ensuring along the arc of contact of the rim with the grinding wheel a progressive increase in rigidity of the grinding wheel, and in the abrasiveness and the grinding rate of the grinding wheel. .
  • the glasses are sensitive to an abrupt accidental variation of the pressure, due for example to unevenness of the de-capped surface.
  • the Belgian improvement patent n ° 696.828 proposes to mount the rotating discs on floating motors whose rotation shafts are subjected to an appropriate pneumatic pressure kept constant during the duration of glass flotation.
  • Each motor shaft rests on a ball cylinder fixed to the casing of this motor.
  • the ball is supported in the free state on the bottom of the cylinder and is lifted from this seat during flattering under the action of a compressed gas ensuring the aforementioned pneumatic pressure.
  • the production capacity of an automatic pallet-flattering-chamfering-polishing machine with 24 workstations can reach up to 45 glasses per minute when the glasses are perfectly de-capped.
  • the present invention aims to increase the capacity of such a machine, without increasing the number of work stations. It offers a grinding wheel which makes it possible to correctly flatter glasses presenting irregularities in the dealership, without breaking or chipping them. It also makes it possible to increase the grinding pressure substantially up to twice without the risk of causing the glass to melt and consequently makes it possible to increase the flow rate of ground glass as a function of the pressure applied.
  • each grinding wheel intended for flattering and polishing glasses consists of a rotating abrasive disc with a diameter of 100 to 300 mm, having, for its core, a sheet of spring steel in the form of a plate. a thickness of 0.5 to 3 mm, shaped by stamping or turning followed by rectification.
  • the rectification of the diamond face of the plate-shaped grinding wheel is relatively easy to perform. Indeed, this operation can be carried out when the disc is still flat since the abrasive disc can be subjected to stamping after the rectification of the diamond concretion has been operated.
  • the core consists of a spring sheet of hardened and tempered steel so as to have a ROCKWELL hardness of between 40 and 50 HR c and in particular 42 and 43 HR c .
  • a flattering device designated as a whole by the reference notation 1 comprises a frame 2 on which is mounted at least one rotary gripping head 3 consisting of a clamping mandrel enabling to align a glass or cup along an axis of symmetry.
  • the drink 6 of the glass 4 driven in rotation is placed secantly by two diametrically opposite axes of its drink symmetrically on the marginal zone of a pair of grinding wheels, 7,8, driven in rotation by floating motors 9, such as described in Belgian patents No. 670,504 and 696,828.
  • a grinding wheel 7.8 according to the invention comprises a core which is constituted by an annular disc formed by a flat sheet 1 of spring steel having a thickness of between 1.0 and 1.5 mm and preferably 1, 2 mm.
  • the sheet 10 is first heat treated and then rectified on both sides 11 and 12.
  • the heat treatment gives the sheet 10 a ROCKWELL hardness of between 40 and 50 HR c allowing it, without being excessively deformed, to resist the stresses which are applied to it during flattering and polishing and in particular to bending forces.
  • ROCKWELL hardness simply gives an idea of the elasticity of the sheet used.
  • This sheet is advantageously made of a spring steel conforming to standard AISI 1095 and cited by way of example. It can also be made of steel conforming to AFNOR XC 100 standard.
  • an oblique flange 13 relative to the surface of the central working area 14 of the disk 7.8 is arranged in the rotary disc 7.8 by stamping, this flange 13 being inclined in a direction opposite to that towards which the face 11 carrying the abrasive mass is presented.
  • the deflection angle of the flared peripheral rim 13 is relatively small, but sufficient to considerably improve the entry of the rim 6 of the glass 4 to flatter on the grinding wheel.
  • the obliqueness of the section edge of the stamped disc also has the effect of increasing the rigidity of the sheet 10.
  • the declination of the rim 13 reaches 0.5 to 1.5 mm over a radial distance of between 5 and 15 mm, in particular 0.7 to 0.8 mm over a radial distance of 7.5 mm.
  • the flat surface portion of the central zone 14 makes it possible to treat the edge of the glasses 4 with a rate much higher than that hitherto achieved in currently known machines.
  • the present invention achieves this goal. It also improves by its curved shape the smooth entry of the rim on the grinding wheel. It ensures progressive grinding of the glass and eliminates the probability of impacts between the drink 6 of the glasses 4 and the grinding wheels 7,8.
  • the grinding wheels 7, 8 according to the invention can be mounted in pairs and flat in the same flattering plane, the abrasive surface in contact with the rim of the drink of glasses 4 determined by arcs of diametrically opposite circles, is greater than in known flattering devices, while ensuring excellent entry.
  • the contact surface can be adjusted at will, by modifying the spacing of the grinding wheels, according to the diameter of the glasses to be flattered.
  • a variable spacing between the discs also makes it possible to use a larger portion of abrasive surface in order to obtain a homogeneous wear of all the active surface available of the grinding wheel.

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)
EP86870026A 1985-02-28 1986-02-21 Schleifscheibe zur Bearbeitung und zum Polieren von Gläsern Expired - Lifetime EP0193516B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86870026T ATE51354T1 (de) 1985-02-28 1986-02-21 Schleifscheibe zur bearbeitung und zum polieren von glaesern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/214578A BE901840A (fr) 1985-02-28 1985-02-28 Meule destinee au flettage et au polissage de verres.
BE214578 1985-02-28

Publications (2)

Publication Number Publication Date
EP0193516A1 true EP0193516A1 (de) 1986-09-03
EP0193516B1 EP0193516B1 (de) 1990-03-28

Family

ID=3843858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86870026A Expired - Lifetime EP0193516B1 (de) 1985-02-28 1986-02-21 Schleifscheibe zur Bearbeitung und zum Polieren von Gläsern

Country Status (5)

Country Link
US (1) US4986035A (de)
EP (1) EP0193516B1 (de)
JP (1) JPS61230856A (de)
AT (1) ATE51354T1 (de)
DE (1) DE3669837D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0678358A1 (de) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Maschine zum Schleifen des Randes hohler Gefässe

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5733175A (en) 1994-04-25 1998-03-31 Leach; Michael A. Polishing a workpiece using equal velocity at all points overlapping a polisher
US5607341A (en) 1994-08-08 1997-03-04 Leach; Michael A. Method and structure for polishing a wafer during manufacture of integrated circuits
US8460060B2 (en) * 2009-01-30 2013-06-11 Smr Patents S.A.R.L. Method for creating a complex surface on a substrate of glass
DE202017107425U1 (de) * 2017-12-06 2017-12-20 Jobra Metall Gmbh Schleifscheibe
CN111546174A (zh) * 2020-04-13 2020-08-18 佘小梅 一种红酒杯杯口打磨设备
CN113070804B (zh) * 2021-04-20 2022-08-05 重庆星源玻璃器皿有限责任公司 玻璃制品抛光装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187743A (en) * 1938-04-28 1940-01-23 Carborundum Co Granular coated article
US2928136A (en) * 1957-04-08 1960-03-15 Norton Co Method of forming coated abrasives
DE1133273B (de) * 1957-03-18 1962-07-12 Otto Assmann Maschine zum Schleifen und Polieren der OEffnungsraender von Tassen, insbesondere von Tassen mit hochangesetzten Henkeln
BE701222A (de) * 1967-07-11 1967-12-18
DE2530579A1 (de) * 1975-07-09 1977-01-20 Hans Kurt Prof Dr Toenshoff Werkzeug zum spanenden bearbeiten
DE2724331A1 (de) * 1977-05-28 1978-12-07 Schott Zwiesel Glaswerke Vorrichtung zum schleifen von hohlglaesern
GB2021994A (en) * 1978-06-05 1979-12-12 Philips Nv Method and apparatus for working the tunnel portion of a bulb for a cathode ray tube
DE3201825A1 (de) * 1982-01-21 1983-07-28 Carl Kurt Walther Gmbh & Co Kg, 5600 Wuppertal Schleifscheibe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1707162A (en) * 1927-03-22 1929-03-26 Nathan S Lewis Abrading device
US2508042A (en) * 1943-09-23 1950-05-16 Norton Co Diamond abrasive
US2451295A (en) * 1944-11-08 1948-10-12 Super Cut Abrasive wheel
US2997820A (en) * 1959-12-14 1961-08-29 American Emery Wheel Works Organic bond abrasive wheel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187743A (en) * 1938-04-28 1940-01-23 Carborundum Co Granular coated article
DE1133273B (de) * 1957-03-18 1962-07-12 Otto Assmann Maschine zum Schleifen und Polieren der OEffnungsraender von Tassen, insbesondere von Tassen mit hochangesetzten Henkeln
US2928136A (en) * 1957-04-08 1960-03-15 Norton Co Method of forming coated abrasives
BE701222A (de) * 1967-07-11 1967-12-18
DE2530579A1 (de) * 1975-07-09 1977-01-20 Hans Kurt Prof Dr Toenshoff Werkzeug zum spanenden bearbeiten
DE2724331A1 (de) * 1977-05-28 1978-12-07 Schott Zwiesel Glaswerke Vorrichtung zum schleifen von hohlglaesern
GB2021994A (en) * 1978-06-05 1979-12-12 Philips Nv Method and apparatus for working the tunnel portion of a bulb for a cathode ray tube
DE3201825A1 (de) * 1982-01-21 1983-07-28 Carl Kurt Walther Gmbh & Co Kg, 5600 Wuppertal Schleifscheibe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 279 (M-262) [1424], 13 décembre 1983, page 32 M 262; & JP - A - 58 155 174 (NIHON REJIBON SEITO K.K.) 14-09-1983 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0678358A1 (de) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Maschine zum Schleifen des Randes hohler Gefässe

Also Published As

Publication number Publication date
JPS61230856A (ja) 1986-10-15
EP0193516B1 (de) 1990-03-28
ATE51354T1 (de) 1990-04-15
US4986035A (en) 1991-01-22
DE3669837D1 (de) 1990-05-03

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