EP0193516A1 - Grinding tool for dressing and polishing glasses - Google Patents

Grinding tool for dressing and polishing glasses 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
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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
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German (de)
French (fr)
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EP0193516B1 (en
Inventor
Honoré Joseph Lambot
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Diamant Boart NV SA
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Diamant Boart NV SA
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Priority claimed from BE0/214578A external-priority patent/BE901840A/en
Application filed by Diamant Boart NV SA filed Critical Diamant Boart NV SA
Priority to AT86870026T priority Critical patent/ATE51354T1/en
Publication of EP0193516A1 publication Critical patent/EP0193516A1/en
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    • 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.

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  • 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

1. Cracking-off, smoothing, bevelling and polishing machine with automatic charging, comprising a rotatable gripping head (3) intended to grip a glass (4) by its base and to set it into rotation, means for presenting this gripping head and this rotating glass to two above-mentioned grinding or polishing elements (7, 8) adapted to travel in the opposite direction and drivable by floating motors (9) and which are constantly remote from one another and are arranged symmetrically and in a secant fashion relative to the direction of application of a rim of said glass (4), these elements (7, 8) also being situated in the same plane substantially perpendicular to this direction in the free state on the one hand and adapted to be slightly flexed by their contact with the rim of the glass along diametrically opposed portions of this rim during the smoothing operation on the other hand, characterised in that the polishing elements (7, 8) are constituted by a rotatable abrasive disc having a diameter of from 100 to 300 mm and having as core a sheet of spring steel (10) in the form of a plate having a thickness of from 0.5 to 3 mm which is mechanically shaped so as to have an inclined edge (13).

Description

La présente invention est relative à une meule destinée au flettage du bord d'un verre à l'aide d'une machine décalloteuse -fletteuse-chanfreineuse-polisseuse à chargement automatique, comprenant une tête de préhension rotative destinée à agripper le verre par sa base et à l'entraîner en rotation, un moyen d'amenée de cette tête de préhension et de ce verre en rotation vers deux éléments meulants ou polissants défilant en sens inverse ,entraînés par des moteurs flottants, constamment distants l'un de l'autre, et disposés symétriquement et de façon sécante par rapport à la direction de cette application, ces éléments étant en outre d'une part à l'état libre, situés dans un plan sensiblement perpendiculaire à cette direction et d'autre part, au cours du flettage, légèrement fléchis par leur contact avec le buvant du verre suivant des portions diamétralement opposées de ce buvantThe 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

Elle trouve sa principale action dans les machines à fletter les verres.It finds its main action in machines for flattering glasses.

L'élément meulant ou polissant y est-formé par une meule rotative présentant une surface de travail perpendiculaire à son axe de rotation. Le verre à fletter est appliqué par son buvant de façon sécante contre la surface abrasive de chacune des meutes, de manière à subir un meulage suivant deux arcs de contact diamétralement opposés. Le verre est sensiblement maintenu vertical et entraîné en rotation autour d'un axe vertical immobile au cours du flettage.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.

On connaît par le brevet belge n° 670.504 une machine à fletter des verres, à chargement automatique comprenant une tête de préhension d'un verre par sa base, en particulier par son pied, un moyen de mise en rotation de la tête de préhension et du verre autour de l'axe de celui-ci, un moyen d'amenée de cette tête de préhension en rotation vers l'outil susdit de meulage ou de polissage et d'application de ce verre en rotation contre cet outil rotatif. Ledit outil est garni de deux disques plans de meulage ou de polissage. Ces disques qui sont abrasifs et flexibles, sont constamment distants l'un de l'autre. lls sont disposés symétriquement par rapport à la direction d'application du verre sur eux. Ils sont, à l'état libre, situés dans un même plan à peu près perpendiculaire à cette direction. Les plans que ces disques déterminent à l'état libre, forment entre eux un léger angle de manière à favoriser un meulage progressif par chacune des deux meules le long des arcs sécants de contact du buvant avec lesdites meules.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.

En effet pour améliorer l'angle d'attaque du bord du verre, les paires de meules destinées au même verre sont avantageusement inclinées l'une par rapport à l'autre et par rapport à l'axe de rotation du verre, de manière à ce que leur axe de rotation soit sensiblement concourant avec l'axe de symétrie du verre. Dans ce but, la partie du bâti qui supporte une meule est orientable par rapport à la tête de préhension du verre, suivant la direction d'amenée du verre vers la meule.In fact, to improve the angle of attack of the edge of the glass, 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. For this purpose, 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.

Chaque disque de meulage ou de polissage est monté sur un plateau rotatif dont la face qui reçoit le disque, est garni d'une succession de flasques de diamètre croissant en acier à ressort de faible épaisseur de manière à rigidifier la meule de façon croissante lorsqu'on se rapproche de l'axe. Cette configurationn permet de prédéterminer un pouvoir abrasif au cours du flettage, en assurant le long de l'arc de contact du buvant avec la meule une augmentation progressive de rigidité de la meule, et de l'abrasivité et du débit de meulage de la meute.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. .

En raison de leur grande fréquence de rotation des disques, les verres sont sensibles à une variation brusque accidentelle de la pression, dû par exemple à des inégalités de la surface décallotée.Because of their high frequency of rotation of the discs, the glasses are sensitive to an abrupt accidental variation of the pressure, due for example to unevenness of the de-capped surface.

Aux vitesses de rotation mises en jeux, un choc même minime sur un verre peut provoquer la rupture du verre.At the rotational speeds involved, even a small impact on a glass can cause the glass to break.

Le brevet belge de perfectionnement n° 696.828 propose de monter les disques rotatifs sur des moteurs flottants dont les arbres de rotation sont soumis à une pression pneumatique appropriée maintenue constante pendant la durée de flettage du verre.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.

Chaque arbre de moteur repose sur un cylindre à bille fixé au carter de ce moteur. La bille prend appui à l'état libre sur le fond du cylindre et est soulevée de ce siège pendant le flettage sous l'action d'un gaz comprimé assurant la pression pneumatique susmentionnée.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.

L'emploi de disques plans flexibles sur des moteurs flotants permet d'assurer un bon rendement de flettage, une constance dans la qualité des verres flettés avec un taux de casse faible et une bonne longévité des disques.The use of flexible flat discs on floating motors ensures good flattering efficiency, consistency in the quality of flattered glasses with a low breakage rate and good longevity of the discs.

La capacité de production d'une machine automatique décalloteuse -fletteuse -chanfreineuse-polisseuse à 24 postes de travail,peut atteindre ainsi jusqu'à 45 verres à la minutelorsque les verres sont parfaitement décallotés.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.

La présente invention vise à augmenter la capacité d'une telle machine, sans augmenter le nombre de postes de travail. Elle propose une meule qui permet de fletter correctement des verres présentant des irrégularités de décallottage, sans casser ni écailler ceux-ci. Elle permet en outre d'augmenter sensiblement jusqu'à deux fois la pression de meulage sans risque de provoquer la fusion du verre et permet par conséquent d'augmenter le débit de verre meulé en fonction de la pression appliquée.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.

A cet effet, chaque meule destinée au flettage et au polissage des verres est constituée d'un disque abrasif rotatif d'un diamètre de 100 à 300 mm, ayant, pour âme une tôle d'acier à ressort en forme d'assiette d'une épaisseur de 0,5 à 3 mm, mise en forme par emboutissage ou par tournage suivi d'une rectification.For this purpose, 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.

La rectification de la face diamantée de la meule en forme d'assiette est relativement facile à réaliser, En effet, cette opération peut être effectuée lorsque le disque est encore plat puisque le disque abrasif peut être soumis à l'emboutissage après que la rectification de la concrétion diamantée ait été opérée.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.

Selon une particularité de l'invention, l'âme est constituée d'une tôle à ressort en acier trempé et revenu de manière à présenter une dureté ROCKWELL comprise entre 40 et 50 HRc et en particulier 42 et 43 HR c.According to a feature of the invention, 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 .

D'autres détails et particularités de l'invention apparaîtront au cours de la description des dessins annexés au présent mémoire qui illustrent de manière schématique et à titre d'exemple seulement une forme de réalisation de l'invention.Other details and peculiarities of the invention will become apparent during the description of the drawings appended to this memo which illustrate schematically and by way of example only one embodiment of the invention.

Dans ces dessins :

  • -la figure 1 est une vue en perspective d'un dispositif de flettage montrant une tête de préhension ,un verre, une paire de meutes, en outre des moyens d'arrosage des zones de contact entre le buvant du verre et les surfaces abrasives de travail ;
  • -la figure 2 est une vue en plan d'un poste de flettage mettant en oeuvre des meules tronconiques selon l'invention, et
  • -la figure 3 est une coupe axiale analogue à celle de la figure 1, du profil à grande échelle du rebord d'une meule.
In these drawings:
  • FIG. 1 is a perspective view of a flattering device showing a gripping head, a glass, a pair of packs, in addition means for watering the contact areas between the glass rim and the abrasive surfaces of job ;
  • FIG. 2 is a plan view of a flattering station using frustoconical grinding wheels according to the invention, and
  • FIG. 3 is an axial section similar to that of FIG. 1, of the large-scale profile of the edge of a grinding wheel.

Dans ces trois figures, des mêmes notations de référence désignent des éléments identiques ou analogues.In these three figures, the same reference notations designate identical or analogous elements.

Comme illustré à la figure 1, un dispositif de flettage désigné dans son ensemble par la notation de référence 1 comprend un bâti 2 sur lequel est monté au moins une tête rotative de préhension 3 constituée d'un mandrin de serrage pemettant d'aligner un verre ou gobelet suivant un axe de symétrie.As illustrated in FIG. 1, 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.

Le verre 4 ou le gobelet enserré par son pied 5 , respectivement par sa base dans le mandrin de serrage, est entraîné en rotation autour d'un axe vertical commun L,L'. Le buvant 6 du verre 4 entraîné en rotation, est posé de façon sécante par deux axes diamétralement opposés de son buvant symétriquement sur la zone marginale d'une paire de meules, 7,8, entraînées en rotation par des moteurs flottants 9, tels que décrit dans les brevets belges n° 670.504 et 696.828.The glass 4 or the cup enclosed by its foot 5, respectively by its base in the clamping mandrel, is rotated around a common vertical axis L, L '. 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.

Pour assurer à une paire de disques 7,8 rotatifs agissant sur le buvant d'un même verre 4 à fletter, un meilleur pouvoir abrasif, on prévoit de faire tourner les deux disques 7 et 8 ainsi que le verre 4, disposé de façon sécante sur les deux disques 7 et 8 dans un même sens de rotation Z qui dans le cas illustré à la figure 1 est le sens horlogique.To ensure that a pair of 7.8 rotary discs acting on the rim of the same glass 4 to be flattered, have better abrasive power, provision is made to rotate the two discs 7 and 8 as well as the glass 4, arranged in a secant manner. on the two discs 7 and 8 in the same direction of rotation Z which in the case illustrated in FIG. 1 is the clockwise direction.

En subsance, une meule 7,8 suivant l'invention comprend une âme qui est constituée par un disque annnulaire formé par une tôle plane 1 en acier à ressort ayant une épaisseur comprise entre 1,0 et 1,5 mm et de préférence 1,2 mm.Subsequently, 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.

Après son découpage et sa mise à dimension, la tôle 10 est d'abord traitée thermiquement et ensuite rectifiée sur les deux faces 11 et 12. Le traitement thermique confère à la tôle 10 une dureté ROCKWELL comprise entre 40 et 50 HRc lui permettant, sans se déformer exagérément ,de résister aux sollicitations qui lui sont appliquées pendant le flettage et le polissage et notamment aux efforts de flexion.After cutting and dimensioning, 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.

La dureté ROCKWELL donne simplement une idée de l'élasticité de la tôle utilisée. Cette tôle est avantageusement constituée d'un acier à ressort conforme à la norme AISI 1095 et cité à titre d'exemple. Elle peut également être réalisée en acier conforme à la norme AFNOR XC 100.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.

Suivant l'invention, on aménage dans le disque rotatif 7,8 par emboutissage, un rebord oblique 13 par rapport à la surface de la zone de travail centrale 14 du disque 7,8, ce rebord 13 étant incliné dans une direction opposée à celle vers laquelle se présente la face 11 portant la masse abrasive.According to the invention, 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.

L'angle de déflexion du rebord périphérique évasé 13 est relativement faible, mais suffisant pour améliorer considérablement l'entrée du buvant 6 du verre 4 à fletter sur la meule.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.

L'oblicité du rebord tronçonique du disque embouti a pour effet également d'augmenter la rigidité de la tôle 10.The obliqueness of the section edge of the stamped disc also has the effect of increasing the rigidity of the sheet 10.

Dans une forme de réalisation particulière, illustrée à la figure 3, le déclinement du rebord 13 atteint 0,5 à ,1,5 mm sur une distance radiale comprise entre 5 et 15 mm, en particulier 0,7 à 0,8 mm sur une distance radiale de 7,5 mm.In a particular embodiment, illustrated in FIG. 3, 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.

La portion de surface plane de la zone centrale 14 permet de traiter le bord des verres 4 avec une cadence bien supérieure à celle atteinte jusqu'à présent dans les machines actuellement connues.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.

Sous l'effet de la faible poussée de flettage exercée par le verre 4 contre les meules 7,8 dès la mise en contact 6 sur l'outil de meulage 7,8, l'arbre du moteur flottant 9 sustendu pneumatiquement absorbe le choc et se retire progressivement sous pression constante jusqu'à buter en fin de course.Under the effect of the low flattering thrust exerted by the glass 4 against the grinding wheels 7,8 as soon as it is brought into contact 6 on the grinding tool 7,8, the floating motor shaft 9 supported pneumatically absorbs the shock and gradually withdraws under constant pressure until it stops at the end of the stroke.

Comme l'effort de pression du buvant 6 sur la meule 7,8 est maintenue inchangée, puisqu'on considère que l'opération de flettage n'est pas terminée, on engendre au cours de la seconde partie de l'opération de flettage, une déformation progressive de la meule 7,8 qui fléchit légèrement dans le sens de l'effort de pression du verre.As the pressure force of the drinker 6 on the grinding wheel 7,8 is kept unchanged, since it is considered that the flattering operation has not ended, during the second part of the flattering operation, a progressive deformation of the grinding wheel 7,8 which bends slightly in the direction of the pressure force of the glass.

En fait, c'est la flexibilité du disque de meulage 7,8 qui reprend à elle seule l'effort de pression exercée par le verre 4 sur le disque 7,8.In fact, it is the flexibility of the grinding disc 7.8 which alone takes up the pressure force exerted by the glass 4 on the disc 7.8.

On voit donc l'importance qu'il y a à rigidifier la meule par une succession de flasques dans la zone centrale et conserver une flexibilité dans la zone périsphérique. La présente invention permet d'atteindre ce but. Elle permet également d'améliorer par sa forme bombée l'entrée en douceur du buvant sur la meule. Elle assure un meulage progressif du verre et élimine la probabilité de chocs entre le buvant 6 des verres 4 et les meules 7,8.We therefore see the importance of stiffening the grinding wheel by a succession of flanges in the central area and retaining flexibility in the perispherical area. 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.

Etant donné que les meules 7,8 suivant l'invention peuvent être montées par paire et à plat dans un même plan de flettage, la surface abrasive en contact avec le rebord du buvant des verres 4 déterminées par des arcs de cercles diamétralement opposés, est plus importante que dans les dispositifs de flettage connus, tout en assurant une entrée excellente. De plus, la surface de contact peut être réglée à volonté , en modifiant l'écartement des meules, selon le diamètre des verres à fletter. Un écartement variable entre les disques permet également d'utiliser une plus grande portion de surface abrasive afin d'obtenir une usure homogène de toute la surface active disponible de la meule.Since 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. In addition, 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.

Il est évident que l'invention n'est pas exclusivement limitée aux formes de réalisation représentées et que bien des modifications peuvent être apportées dans la forme, la constitution et la disposition de certains des éléments intervenant dans sa réalisation, à condition que ces modifications ne soient pas en contradiction avec l'objet de chacune des revendications suivantes.It is obvious that the invention is not exclusively limited to the embodiments shown and that many modifications can be made in the form, the constitution and the arrangement of some of the elements involved in its realization, provided that these modifications do not are not inconsistent with the subject of each of the following claims.

Claims (5)

1. Meule (7,8) destinée au flettage du bord d'un verre (4) à l'aide d'une machine décalloteuse, -fletteuse-chanfreineuse -polisseuse à chargement automatique comprenant une tête de préhension rotative (3) destinée à agripper le verre (4) par sa base et l'entraîner en rotation, un moyen d'amenée de cette tête de préhension et de ce verre en rotation vers deux éléments meulants ou polissants susdits défilant en sens inverse, entraînés par des moteurs flottants (9), constamment distants l'un de l'autre, disposés symétriquement et de façon sécante par rapport à la direction de cette application, ces éléments étant en outre d'une part à l'état libre, située dans un même plan sensiblement perpendiculaire à cette direction et d'autre part, au cours du flettage, légèrement fléchis par leur contact avec le buvant (6) du verre (4) suivant des portions diamétralement opposées de ce buvant (6), caractérisée en ce qu'elle est constituée d'un disque abrasif rotatif d'un diamètre de 100 à 300 mm, ayant pour âme une tôle d'acier à ressort (10) en forme d'assiette d'une épaisseur de 0,5 à 3 mm, mise en forme mécaniquement de manière à présenter un rebord incliné.1. Grinding wheel (7,8) intended for flattering the edge of a glass (4) using a lockable machine, -flettering-chamfering machine-polisher with automatic loading comprising a rotary gripping head (3) intended for grip the glass (4) by its base and drive it in rotation, a means of supplying this gripping head and this glass in rotation towards two grinding or polishing elements aforesaid scrolling in opposite directions, driven by floating motors ( 9), constantly distant from each other, arranged symmetrically and secantly with respect to the direction of this application, these elements also being on the one hand in the free state, located in the same plane substantially perpendicular in this direction and on the other hand, during flattering, slightly bent by their contact with the rim (6) of the glass (4) in diametrically opposite portions of this rim (6), characterized in that it is constituted a rotary abrasive disc with a diameter of 100 to 300 mm, aya nt for core a plate of spring steel (10) in the form of a plate with a thickness of 0.5 to 3 mm, shaped mechanically so as to have an inclined rim. 2. Meute suivant la revendication 1, caractérisée en ce que le disque abrasif comporte une déflection annulaire réalisée par emboutissage après rectification de la concrétion diamantée.2. Pack according to claim 1, characterized in that the abrasive disc comprises an annular deflection produced by stamping after rectification of the diamond concretion. 3. Meule suivant la revendication 1, caractérisée en ce que le disque abrasif comporte une déffection annulaire par tournage suivi d'une rectification.3. Grinding wheel according to claim 1, characterized in that the abrasive disc comprises an annular defect by turning followed by a rectification. 4. Meule suivant l'une quelconque des revendications précédentes, caractérisée en ce que l'âme est constituée d'une tôle à ressort (10) en acier trempé et revenu de manière à présenter une dureté ROCKWELL comprise entre 40 et 50 HRc, en particulier 42 et 43 HRc.4. Grinding wheel according to any one of the preceding claims, characterized in that the core consists of a spring sheet (10) made of hardened and tempered steel so as to have a ROCKWELL hardness of between 40 and 50 HRc, in particular 42 and 43 HR c . 5. Meule suivant l'une quelconque des revendications précédentes, caractérisée en ce que le déclinement du rebord (13) atteint 0,5 à 1,5 mm. sur une distance radiale comprise entre 5 et 15mm, en particulier 0,7 à 0,8 mm sur une distance radiale de 7,5 mm.5. Grinding wheel according to any one of the preceding claims, characterized in that the decline of the rim (13) reaches 0.5 to 1.5 mm. over a radial distance between 5 and 15mm, in particular 0.7 to 0.8mm over a radial distance of 7.5mm.
EP86870026A 1985-02-28 1986-02-21 Grinding tool for dressing and polishing glasses Expired - Lifetime EP0193516B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86870026T ATE51354T1 (en) 1985-02-28 1986-02-21 GRINDING DISC FOR PROCESSING AND POLISHING GLASS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE0/214578A BE901840A (en) 1985-02-28 1985-02-28 Wine-glass deburring and polishing grinder - has rotary abrasive discs with cores of spring steel plate
BE214578 1985-02-28

Publications (2)

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

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ID=3843858

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Application Number Title Priority Date Filing Date
EP86870026A Expired - Lifetime EP0193516B1 (en) 1985-02-28 1986-02-21 Grinding tool for dressing and polishing glasses

Country Status (5)

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US (1) US4986035A (en)
EP (1) EP0193516B1 (en)
JP (1) JPS61230856A (en)
AT (1) ATE51354T1 (en)
DE (1) DE3669837D1 (en)

Cited By (1)

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EP0678358A1 (en) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Machine for grinding the edge of hollow containers

Families Citing this family (6)

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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 (en) * 2017-12-06 2017-12-20 Jobra Metall Gmbh grinding wheel
CN111546174A (en) * 2020-04-13 2020-08-18 佘小梅 Red wine glass rim of a cup equipment of polishing
CN113070804B (en) * 2021-04-20 2022-08-05 重庆星源玻璃器皿有限责任公司 Glass product polishing device

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Publication number Priority date Publication date Assignee Title
EP0678358A1 (en) * 1994-04-21 1995-10-25 Maschinen- und Stahlbau Julius Lippert GmbH & Co. Machine for grinding the edge of hollow containers

Also Published As

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

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