EP0995546B1 - Spanneinrichtung zum Festlegen eines Rohlings auf einer Brillenglasrand-Schleifmaschine - Google Patents
Spanneinrichtung zum Festlegen eines Rohlings auf einer Brillenglasrand-Schleifmaschine Download PDFInfo
- Publication number
- EP0995546B1 EP0995546B1 EP99402518A EP99402518A EP0995546B1 EP 0995546 B1 EP0995546 B1 EP 0995546B1 EP 99402518 A EP99402518 A EP 99402518A EP 99402518 A EP99402518 A EP 99402518A EP 0995546 B1 EP0995546 B1 EP 0995546B1
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- EP
- European Patent Office
- Prior art keywords
- plate
- female housing
- clamping
- axis
- facets
- 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
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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
- B24B41/06—Work supports, e.g. adjustable steadies
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- 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
- B24B9/14—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 optical work, e.g. lenses, prisms
- B24B9/146—Accessories, e.g. lens mounting devices
Definitions
- the present invention relates to a device for tightening a puck on a machine for overflowing optical glasses. As defined in the preamble of claim 1. Such a device is described in document FR.A.2 226 824.
- the glass When overflowing, the glass must be held rigidly on an axis around which it is brought to be turned so as to allow the realization different radii constituting the shape to be obtained; this axis, which by example may correspond to the optical center of the patient's pupil or to the geometric center of the shape, does not coincide with the center of the puck; added to this, the wide variety of geometric shapes of surfaces concave and convex glasses shows that it is not possible to ensure the retaining of the puck by rigid interfaces.
- the optical glasses of the type comprising two jaws for tightening the faces of the coaxial puck provided with support members intended to cooperate each with one of the faces of the puck, at least one of the jaws comprising a plate and a body, the plate carrying one of the support members and being mounted at articulation on the body, such an articulation assembly being of the ball joint type.
- the invention aims to avoid these drawbacks and proposes a clamping device provided with a ball-type joint which allows increase the performance of the overflow machine in terms of speed of machining, fidelity of the forms, respect of the dimensions and the axis of the glass.
- a device for tightening a puck on a extend beyond the optical glasses, of the type comprising two jaws for tightening the faces of the coaxial puck provided with support members intended to cooperate each with one of the faces of the puck, at least one of the jaws comprising a plate and a body, the plate carrying one of the support members and being mounted at articulation on the body, the articulation mounting of the plate on the body being produced by a male element, carried by one of the two plate-body parts and cooperating with a female housing provided in the other of the two parts, is characterized in that the male element is provided with at least three facets regularly distributed around an axis that it presents, each facets having a generally cylindrical shape whose generatrices extend orthogonally with respect to said axis, on either side of a same transverse plane, the female housing, of the blind type, carrying flat faces parallel to an axis which it presents, intended to cooperate each with one of the facets of the male element and axially limited by a bottom.
- the male element is provided with six facets and the housing female with six flat faces.
- the bottom of the female housing is frustoconical; in variant, the bottom of the female housing is semi-spherical.
- the support member carried by the plate is semi-elastic.
- the articulated mounting of the plate on the body is protected by a bellows stapled peripherally on one side on the plate and on the other on the body.
- the male element is carried by the body and the housing female housed in the tray.
- one of the jaws being fixed and the other movable axially, it is the movable jaw which comprises the plate and the body.
- the overflow machine comprising a a clamping pin
- the body is hollow and suitable for mounting at the end of the clamping pin to which it is secured.
- the overflow machine comprising a clamping spindle
- the body is formed by the end of the clamping pin.
- the clamping device comprises a clamping jaw 10 comprising in plate 11 and a body 12; the plate 11 carries a support member 13 intended to cooperate with the face concave 2 of a puck 1 to overflow; with the convex face 3 of the puck 1 cooperates another jaw, not shown, fixed, centered, like the jaw of clamping 10, on the axis 4 of the puck 1, here its optical axis; as known per se, the fixed jaw, not shown, carries an elastic support member, of the kind suction cup, on which the puck 1 is "crushed" by the clamping jaw 10 by through its relatively elastic support member 13.
- the body 12 is hollow and provided with a blind housing 15 cylindrical, through which the clamping jaw 10 is mounted on the nose 6 of a spindle 5, of the overflow machine, centered on the axis 4; a screw 14 of the needle type screwed into a threaded hole 16 which crosses the wall of the body 12 allows the body 12 to be joined to the nose 6 of the spindle 5.
- the torque is transmitted by a radial pin not shown which is housed in a notch 34 of the body 12.
- the body 12 From its front transverse wall 17 which limits its blind housing cylindrical 15, the body 12 carries a male element 18 adapted to cooperate with a female housing 19 formed in the plate 11.
- the male element 18 is provided with facets 20, here six in number, regularly distributed around its axis 21; each facet 20 has a generally cylindrical shape whose generatrices extend orthogonally to said axis 21: thus, the two facets 20 opposite visible in section in Figure 2 have their generatrices perpendicular to the plane of the figure; the generators, and therefore each facet 20, extend on either side of the same transverse plane 22, advantageously symmetrically with respect to this plane 22; preferably their section through the plane of Figure 2 is in an arc centered on the axis at point 23 of intersection by the axis 21 of said transverse plane 22.
- the female housing 19 carries planar faces 24 parallel to the axis 25 that presents the plate 11; the female housing 19 carries as many faces 24, regularly distributed circumferentially, that there are 20 facets on the male element 18, each face 24 being intended to cooperate with each facet 20.
- the bottom 26 is of frustoconical shape, centered on the axis 25.
- the bottom 26 is of semi-spherical shape.
- the bottom 26 has a circular central opening 27 corresponding to the smaller diameter base when the bottom 26 is frustoconical shape.
- the plate 11 On its face intended to be opposite the puck 1 to overflow, the plate 11 has an annular recess 31 intended to receive the support member 13 made of semi-elastic material; more specifically, the support member 13 includes a web 33 surrounded by an annular crown 32 intended to be housed in the annular recess 31 of the plate 11; here the central opening 27 from the bottom 26 of the female housing 19 facilitates the positioning of the member support 13; alternatively, the bottom of the female housing 19 is full and the member support 13 has only the crown 32.
- the plate 11 and the body 12 are integral in rotation, by cooperation of the facets 20 with the faces 24; in addition, this cooperation allows the plate 11 to move angularly relative to the body 12: the support member 13 that the plate 11 can therefore be applied to the concave face 2 of the puck 1 which let the angle of the mean tangent of this face be, as shown in Figure 9; moreover, the cooperation of the facets 20 of the male element 18 with the bottom 26 of the female housing 19 ensures the transmission of the clamping force along axis 4 whatever the angle in question.
- the joint functions in the manner of a ball joint while securing in rotation the male element 18 of the body 12 and the female housing 19 of the plate 11.
- the presence of six facets and six faces, arranged hexagonally, opposite two to two, allows a symmetrical swiveling from the point of view of the angles of movement of the plate 11 relative to the body 12; moreover, this hexagonal arrangement leads to an articulation having practically no rotating game and the cost of realization is reasonable; by comparing, an even number of facets and faces greater than six requires a play in very tight rotation, which strikes the cost price.
- variants are possible; a variant with three or five facets and three or five faces also works: the swiveling is easy around an axis parallel to the flat faces; elsewhere, the travel is limit ; however, the travel is not symmetrical depending on the direction of travel.
- a variant with four facets and four faces also works easily and symmetrically around an axis parallel to two parallel faces, elsewhere the travel being more limited.
- the joint is advantageously protected by an elastic bellows 30 rubber surrounding it, even chips made during the overflowing; one end of the bellows 30 is stapled in a groove 28 presented by the body 12 and the other end in a groove 29 of the plate 11; this bellows 30 is preferably mounted in tension between the plate 11 and the body 12; he thus assembles these two pieces of simple and easy to dismantle while permanently ensuring the contact of the male element 18 on the bottom 26 of the female housing 19, the joint is therefore without axial play; it should also be noted that, thanks at the bellows 30, upon loosening, the plate 11 and the body 12 resume automatically their starting position for which they are coaxial, as shown in figure 1.
- the clamping device 100 comprises a body 12 similar to that of the previous device 10, and a plate 111 of diameter lower than that of the previous plate 11; the tray 111 is provided with a support member 113 and a female housing 19 adapted to cooperate with the male element 18 of the body 12; a bellows 130 assembles the plate 111 and the body 12.
- the body 12 is designed to be mounted on pin 5 of the overflow machine; alternatively, this is the end of the pin 5 itself which is shaped like the body 12.
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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)
- Jigs For Machine Tools (AREA)
- Eyeglasses (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Liquid Crystal (AREA)
Description
La présente invention a pour objet un dispositif de serrage d'un palet sur une machine à déborder les verres optiques. Comme défini dans le préambule de la revendication 1. Un tel dispositif est décrit dans le document FR.A.2 226 824.The present invention relates to a device for tightening a puck on a machine for overflowing optical glasses. As defined in the preamble of claim 1. Such a device is described in document FR.A.2 226 824.
Comme on le sait, le débordage des verres de lunettes sur les meuleuses nécessite le maintien de ceux-ci par rapport aux outils.As we know, the overflowing of the spectacle lenses on the grinders require the maintenance of these relative to tools.
Lors du débordage, le verre doit être maintenu rigidement sur un axe autour duquel il est amené à être tourné de façon à permettre la réalisation des différents rayons constituant la forme à obtenir ; cet axe, qui par exemple peut correspondre au centre optique de la pupille du patient ou au centre géométrique de la forme, ne coïncide pas avec le centre du palet ; ajoutée à cela, la grande variété des formes géométriques des surfaces concaves et convexes des verres montre qu'il n'est pas possible d'assurer le maintien du palet par des interfaces rigides.When overflowing, the glass must be held rigidly on an axis around which it is brought to be turned so as to allow the realization different radii constituting the shape to be obtained; this axis, which by example may correspond to the optical center of the patient's pupil or to the geometric center of the shape, does not coincide with the center of the puck; added to this, the wide variety of geometric shapes of surfaces concave and convex glasses shows that it is not possible to ensure the retaining of the puck by rigid interfaces.
On connaít des dispositifs de serrage d'un palet sur une machine à déborder les verres optiques du type comportant deux mors de serrage des faces du palet coaxiaux munis d'organes d'appui destinés à coopérer chacun avec l'une des faces du palet, l'un au moins des mors comportant un plateau et un corps, le plateau portant l'un des organes d'appui et étant monté à articulation sur le corps, un tel montage à articulation étant du type rotule.Known devices for clamping a puck on a machine overflow the optical glasses of the type comprising two jaws for tightening the faces of the coaxial puck provided with support members intended to cooperate each with one of the faces of the puck, at least one of the jaws comprising a plate and a body, the plate carrying one of the support members and being mounted at articulation on the body, such an articulation assembly being of the ball joint type.
Bien entendu, un montage de ce type permet d'appréhender la perpendiculaire à la tangente moyenne de la surface à serrer quelle que soit l'inclinaison de cette perpendiculaire et, dès lors, d'accepter toutes les formes géométriques des verres.Of course, an assembly of this type makes it possible to grasp the perpendicular to the average tangent of the surface to be clamped whatever the inclination of this perpendicular and therefore accept all geometric shapes of glasses.
Toutefois, le problème se pose de la transmission d'un couple de rotation au travers d'une articulation du type rotule ; cette transmission est limitée au frottement pouvant exister entre les éléments mâle et femelle de la rotule, frottement qui ne peut pas être augmenté par augmentation de la force de serrage qui conduirait à casser ou à altérer le palet, et qui nuit à la performance du rotulage proprement dit. However, the problem arises of the transmission of a couple of rotation through a ball joint type; this transmission is limited to the friction that may exist between the male and female elements of the patella, friction which cannot be increased by increasing the tightening force which would lead to breaking or altering the puck, and which would harm the proper swiveling performance.
On a déjà proposé pour assurer la transmission d'un couple dans une articulation à rotule de faire en sorte que les surfaces en présence "collent" : outre que cette transmission n'est pas assurée de manière très positive, elle présente l'inconvénient de nécessiter après chaque opération de "décoller" manuellement les deux constituants de la rotule sous peine de casse du verre.We have already proposed to ensure the transmission of a torque in a ball joint to ensure that the surfaces present "stick": besides that this transmission is not ensured in a very positive way, it has the disadvantage of requiring after each operation to "take off" manually the two components of the patella on pain of breakage of the glass.
On a également proposé d'associer aux deux éléments sphériques de la rotule deux goupilles disposées orthogonalement : cette disposition conduit à une transmission de couple avec jeu angulaire trop important, se mesurant en degrés.It has also been proposed to associate the two spherical elements of the ball joint two pins arranged orthogonally: this arrangement leads to a torque transmission with too much angular play, measuring in degrees.
L'invention a pour but d'éviter ces inconvénients et propose un dispositif de serrage muni d'une articulation du type rotule qui permette d'accroítre les performances de la machine à déborder en termes de rapidité d'usinage, fidélité des formes, respect des cotes et de l'axe du verre.The invention aims to avoid these drawbacks and proposes a clamping device provided with a ball-type joint which allows increase the performance of the overflow machine in terms of speed of machining, fidelity of the forms, respect of the dimensions and the axis of the glass.
Selon l'invention, un dispositif de serrage d'un palet sur une machine à déborder les verres optiques, du type comportant deux mors de serrage des faces du palet coaxiaux munis d'organes d'appui destinés à coopérer chacun avec l'une des faces du palet, l'un au moins des mors comportant un plateau et un corps, le plateau portant l'un des organes d'appui et étant monté à articulation sur le corps, le montage à articulation du plateau sur le corps étant réalisé par un élément mâle, porté par l'une des deux pièces plateau-corps et coopérant avec un logement femelle ménagé dans l'autre des deux pièces, est caractérisé par le fait que l'élément mâle est muni d'au moins trois facettes régulièrement réparties autour d'un axe qu'il présente, chacune des facettes ayant une forme globalement cylindrique dont les génératrices s'étendent orthogonalement par rapport audit axe, de part et d'autre d'un même plan transversal, le logement femelle, du type borgne, portant des faces planes parallèles à un axe qu'il présente, destinées à coopérer chacune avec l'une des facettes de l'élément mâle et limitées axialement par un fond.According to the invention, a device for tightening a puck on a extend beyond the optical glasses, of the type comprising two jaws for tightening the faces of the coaxial puck provided with support members intended to cooperate each with one of the faces of the puck, at least one of the jaws comprising a plate and a body, the plate carrying one of the support members and being mounted at articulation on the body, the articulation mounting of the plate on the body being produced by a male element, carried by one of the two plate-body parts and cooperating with a female housing provided in the other of the two parts, is characterized in that the male element is provided with at least three facets regularly distributed around an axis that it presents, each facets having a generally cylindrical shape whose generatrices extend orthogonally with respect to said axis, on either side of a same transverse plane, the female housing, of the blind type, carrying flat faces parallel to an axis which it presents, intended to cooperate each with one of the facets of the male element and axially limited by a bottom.
De préférence, l'élément mâle est muni de six facettes et le logement femelle de six faces planes. Preferably, the male element is provided with six facets and the housing female with six flat faces.
Avantageusement, le fond du logement femelle est tronconique ; en variante, le fond du logement femelle est semi-sphérique.Advantageously, the bottom of the female housing is frustoconical; in variant, the bottom of the female housing is semi-spherical.
Avantageusement, l'organe d'appui porté par le plateau est semi-élastique.Advantageously, the support member carried by the plate is semi-elastic.
De préférence, le montage à articulation du plateau sur le corps est protégé par un soufflet agrafé périphériquement d'un côté sur le plateau et de l'autre sur le corps.Preferably, the articulated mounting of the plate on the body is protected by a bellows stapled peripherally on one side on the plate and on the other on the body.
Avantageusement, l'élément mâle est porté par le corps et le logement femelle ménagé dans le plateau.Advantageously, the male element is carried by the body and the housing female housed in the tray.
De préférence, l'un des mors étant fixe et l'autre déplaçable axialement, c'est le mors déplaçable qui comporte le plateau et le corps.Preferably, one of the jaws being fixed and the other movable axially, it is the movable jaw which comprises the plate and the body.
Selon une forme de réalisation, la machine à déborder comprenant une une broche de serrage, le corps est creux et adapté à être monté en bout de la broche de serrage à laquelle il est solidarisé.According to one embodiment, the overflow machine comprising a a clamping pin, the body is hollow and suitable for mounting at the end of the clamping pin to which it is secured.
En variante, la machine à déborder comprenant une broche de serrage, le corps est constitué par l'extrémité de la broche de serrage.As a variant, the overflow machine comprising a clamping spindle, the body is formed by the end of the clamping pin.
Pour mieux faire comprendre l'objet de l'invention, on va en décrire maintenant, à titre d'exemple, purement illustratif et non limitatif, un mode de réalisation représenté sur les dessins annexés.To better understand the object of the invention, we will describe now, by way of example, purely illustrative and not limiting, a mode of embodiment shown in the accompanying drawings.
Sur ces dessins :
- la figure 1 montre en coupe le mors mobile d'un dispositif de serrage selon un mode de réalisation de l'invention dans sa position de repos ;
- la figure 2 représente en coupe, selon II-II de la figure 3, le corps seul du mors de la figure 1 ;
- la figure 3 est une vue en plan du corps de la figure 2, les figures 4 et 5 étant des vues de droite et de gauche par rapport à la figure 3, respectivement selon les flèches IV et V de la figure 3 ;
- la figure 6 représente en coupe, le plateau seul du mors de la figure 1 ;
- la figure 7 est une vue de droite par rapport à la figure 6 ;
- la figure 8 montre en coupe l'organe d'appui du mors de la figure 1 ;
- la figure 9 montre en coupe le mors de la figure 1 en position opérationnelle ;
- la figure 10 est analogue à la figure 1 et montre une variante.
- Figure 1 shows in section the movable jaw of a clamping device according to an embodiment of the invention in its rest position;
- 2 shows in section, along II-II of Figure 3, the body alone of the jaw of Figure 1;
- Figure 3 is a plan view of the body of Figure 2, Figures 4 and 5 being views of the right and left with respect to Figure 3, respectively according to arrows IV and V of Figure 3;
- 6 shows in section, the plate only of the jaw of Figure 1;
- Figure 7 is a right view with respect to Figure 6;
- Figure 8 shows in section the support member of the jaw of Figure 1;
- Figure 9 shows in section the jaw of Figure 1 in the operational position;
- Figure 10 is similar to Figure 1 and shows a variant.
Le dispositif de serrage selon les figures 1 à 9
comprend un mors de serrage 10 comportant in plateau 11 et un corps 12 ;
le plateau 11 porte un organe d'appui 13 destiné à coopérer avec la face
concave 2 d'un palet 1 à déborder ; avec la face convexe 3 du palet 1
coopère un autre mors non représenté, fixe, centré, comme le mors de
serrage 10, sur l'axe 4 du palet 1, ici son axe optique ; comme connu en soi,
le mors fixe non représenté porte un organe d'appui élastique, du genre
ventouse, sur lequel est "écrasé" le palet 1 par le mors de serrage 10 par
l'intermédiaire de son organe d'appui 13 relativement élastique.The clamping device according to Figures 1 to 9
comprises a
Ici, le corps 12 est creux et muni d'un logement 15 borgne
cylindrique, par l'intermédiaire duquel le mors de serrage 10 est monté sur le
nez 6 d'une broche 5, de la machine à déborder, centrée sur l'axe 4 ; une vis
14 du type pointeau vissée dans un trou taraudé 16 qui traverse la paroi du
corps 12 permet la solidarisation du corps 12 avec le nez 6 de la broche 5.Here, the
Le couple de rotation est transmis par une goupille radiale non
représentée qui vient se loger dans une encoche 34 du corps 12.The torque is transmitted by a radial pin not
shown which is housed in a
Depuis sa paroi transversale avant 17 qui limite son logement borgne
cylindrique 15, le corps 12 porte un élément mâle 18 adapté à coopérer avec
un logement femelle 19 ménagé dans le plateau 11.From its front
L'élément mâle 18 est muni de facettes 20, ici au nombre de six,
régulièrement réparties autour de son axe 21 ; chaque facette 20 a une
forme globalement cylindrique dont les génératrices s'étendent
orthogonalement par rapport audit axe 21 : ainsi, les deux facettes 20
opposées visibles en coupe sur la figure 2 ont leurs génératrices
perpendiculaires au plan de la figure ; les génératrices, et donc chaque
facette 20, s'étendent de part et d'autre d'un même plan transversal 22,
avantageusement symétriquement par rapport à ce plan 22 ; de préférence,
leur section par le plan de la figure 2 est en arc de cercle centré sur l'axe au
point 23 d'intersection par l'axe 21 dudit plan transversal 22.The
Le logement femelle 19 porte des faces 24 planes parallèles à l'axe 25
que présente le plateau 11 ; le logement femelle 19 porte autant de faces
24, régulièrement réparties circonférentiellement, qu'il y a de facettes 20 sur
l'élément mâle 18, chaque face 24 étant destinée à coopérer avec chaque
facette 20.The
Ici, le fond 26 est de forme tronconique, centré sur l'axe 25.Here, the
Selon une variante non représentée le fond 26 est de forme semi-sphérique.According to a variant not shown, the
Ici, le fond 26 présente une ouverture centrale 27 circulaire
correspondant à la base de plus petit diamètre lorsque le fond 26 est de
forme tronconique.Here, the
Sur sa face destinée à être en regard du palet 1 à déborder, le plateau
11 présente une creusure annulaire 31 destinée à recevoir l'organe d'appui
13 en matériau semi-élastique ; plus précisément, l'organe d'appui 13
comprend un voile 33 entouré d'une couronne 32 annulaire destinée à être
logée dans la creusure annulaire 31 du plateau 11 ; ici l'ouverture centrale
27 du fond 26 du logement femelle 19 facilite la mise en place de l'organe
d'appui 13 ; en variante, le fond du logement femelle 19 est plein et l'organe
d'appui 13 ne comporte que la couronne 32.On its face intended to be opposite the puck 1 to overflow, the
Grâce à l'articulation qui vient d'être décrite, le plateau 11 et le corps
12 sont solidaires en rotation, par coopération des facettes 20 avec les faces
24 ; de plus, cette coopération autorise le plateau 11 à se déplacer
angulairement par rapport au corps 12 : l'organe d'appui 13 que porte le
plateau 11 peut dès lors s'appliquer sur la face concave 2 du palet 1 quel
que soit l'angle de la tangente moyenne de cette face, comme le montre la
figure 9 ; par ailleurs, la coopération des facettes 20 de l'élément mâle 18
avec le fond 26 du logement femelle 19 permet d'assurer la transmission de
l'effort de serrage selon l'axe 4 quel que soit l'angle en question. Thanks to the articulation which has just been described, the
Ainsi, l'articulation fonctionne à la manière d'une
rotule tout en assurant la solidarisation en rotation de l'élément mâle 18 du
corps 12 et du logement femelle 19 du plateau 11. La présence de six
facettes et six faces, disposées de manière hexagonale, en vis à vis deux à
deux, permet un rotulage symétrique du point de vue des angles de
débattement du plateau 11 par rapport au corps 12 ; par ailleurs, cette
disposition hexagonale conduit à une articulation n'ayant pratiquement pas
de jeu en rotation et le coût de réalisation est raisonnable ; par comparaison,
un nombre pair de facettes et de faces supérieur à six nécessite un jeu en
rotation très serré, ce qui grève le prix de revient.Thus, the joint functions in the manner of a
ball joint while securing in rotation the
Bien entendu, des variantes sont possibles ; une variante à trois ou cinq facettes et trois ou cinq faces fonctionne également : le rotulage est aisé autour d'un axe parallèle aux faces planes ; ailleurs, le débattement est limité ; quoi qu'il en soit, le débattement n'est pas symétrique en fonction du sens du débattement. Une variante à quatre facettes et quatre faces fonctionne également de manière aisée et symétrique autour d'un axe parallèle à deux faces parallèles, ailleurs le débattement étant plus limité.Of course, variants are possible; a variant with three or five facets and three or five faces also works: the swiveling is easy around an axis parallel to the flat faces; elsewhere, the travel is limit ; however, the travel is not symmetrical depending on the direction of travel. A variant with four facets and four faces also works easily and symmetrically around an axis parallel to two parallel faces, elsewhere the travel being more limited.
L'articulation est avantageusement protégée par un soufflet élastique
30 en caoutchouc qui l'entoure, ne serait-ce que des copeaux réalisés lors du
débordage ; l'une des extrémités du soufflet 30 est agrafée dans une gorge
28 que présente le corps 12 et l'autre extrémité dans une gorge 29 du
plateau 11 ; ce soufflet 30 est monté de préférence en traction entre le
plateau 11 et le corps 12 ; il réalise ainsi l'assemblage de ces deux pièces de
manière simple et facilement démontable tout en assurant en permanence le
contact de l'élément mâle 18 sur le fond 26 du logement femelle 19,
l'articulation étant dès lors sans jeu axial ; il est à noter de plus que, grâce
au soufflet 30, au desserrage, le plateau 11 et le corps 12 reprennent
automatiquement leur position de départ pour laquelle ils sont coaxiaux,
comme représentée figure 1.The joint is advantageously protected by an
On peut associer bien entendu différents plateaux à un même corps :
ainsi, sur la figure 10, le dispositif de serrage 100 comprend un corps 12
analogue à celui du dispositif 10 précédent, et un plateau 111 de diamètre
inférieur à celui du plateau 11 précédent ; le plateau 111 est muni d'un
organe d'appui 113 et d'un logement femelle 19 adapté à coopérer avec
l'élément mâle 18 du corps 12 ; un soufflet 130 assemble le plateau 111 et
le corps 12.We can of course associate different trays with the same body:
thus, in FIG. 10, the
Dans les exemples représentés, le corps 12 est prévu pour être monté
sur la broche 5 de la machine à déborder ; en variante, c'est l'extrémité de la
broche 5 elle-même qui est conformée à la manière du corps 12.In the examples shown, the
On peut également inverser les structures : ainsi, en variante, c'est
dans le corps 12 qu'est ménagé le logement femelle 19 et c'est le plateau
11 qui porte l'élément mâle 18.We can also reverse the structures: so, as a variant, it's
in the
Claims (10)
- Device for clamping a blank on a machine for trimming optical lenses, which machine includes two coaxial clamping jaws for clamping faces of the blank and in which machine each jaw is provided with bearing means adapted to cooperate with one face of the blank, at least one (10, 100) of the jaws including a plate (11, 111) and a body (12) the plate (11, 111) carrying one (13, 113) of the bearing members and being articulated to the body (12) by a male member (18) carried by one (12) of the two parts of the plate/body combination (11, 111, 12) and cooperating with a female housing (19) in the other of the two parts, characterized in that the male member (18) has at least three facets (20) evenly distributed about its axis (21), each facet (20) being generally cylindrical with generatrices orthogonal to said axis (21) on respective opposite sides of a common transverse plane (22), and the blind female housing (19) having plane faces (24) parallel to its axis and each of which is delimited axially by a bottom (26) and is adapted to cooperate with one of the facets (20) of the male member (18).
- Device according to claim 1 characterized in that the male member (18) has six facets (20) and the female housing (19) has six plane faces (24).
- Device according to either of claims 1 and 2 characterized in that the bottom (26) of the female housing (19) is frustoconical.
- Device according to either of claims 1 and 2 characterized in that the bottom (26) of the female housing (19) is hemispherical.
- Device according to any one of claims 1 to 4 characterized in that the bearing member (13, 113) carried by the plate (11, 111) is semi-elastic.
- Device according to any of claims 1 to 5 characterized in that the articulation of the plate (11, 111) to the body (12) is protected by a bellows (30, 130) clipped peripherally at one end to the plate (11, 111) and at the other end to the body (12).
- Device according to any of claims 1 to 6 characterized in that the male member (18) is carried by the body (12) and the female housing (19) is formed in the plate (11, 111).
- Device according to any of claims 1 to 7 wherein one of the jaws is fixed and the other (10) is movable in the axial direction characterized in that the movable jaw (10) includes the plate (11, 111) and the body (12).
- Device according to claim 8 for use when the trimming machine comprises a clamping spindle characterized in that the body (12) is hollow (15) and adapted to be mounted at the end (6) of the clamping spindle (5), to which it is fastened (14).
- Device according to claim 8 for use when the trimming machine includes a clamping spindle (5) characterized in that the body is the end of the clamping spindle (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9813262A FR2784923B1 (en) | 1998-10-22 | 1998-10-22 | DEVICE FOR TIGHTENING A PALLET ON A MACHINE FOR OVERFLOWING OPTICAL LENSES |
FR9813262 | 1998-10-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0995546A1 EP0995546A1 (en) | 2000-04-26 |
EP0995546B1 true EP0995546B1 (en) | 2002-07-31 |
Family
ID=9531876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99402518A Expired - Lifetime EP0995546B1 (en) | 1998-10-22 | 1999-10-13 | Spanneinrichtung zum Festlegen eines Rohlings auf einer Brillenglasrand-Schleifmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6231433B1 (en) |
EP (1) | EP0995546B1 (en) |
JP (1) | JP4526140B2 (en) |
DE (1) | DE69902333T2 (en) |
ES (1) | ES2181378T3 (en) |
FR (1) | FR2784923B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10114238A1 (en) * | 2001-03-22 | 2002-10-02 | Loh Optikmaschinen Ag | Arrangement for blocking and tensioning optical lenses to be processed on the edge, in particular spectacle lenses |
JP4098046B2 (en) | 2002-09-20 | 2008-06-11 | 株式会社トプコン | Lens grinding machine |
US7174432B2 (en) * | 2003-08-19 | 2007-02-06 | Nvidia Corporation | Asynchronous, independent and multiple process shared memory system in an adaptive computing architecture |
CN103231308B (en) * | 2013-03-29 | 2016-02-10 | 浙江恒成硬质合金有限公司 | Flat-top part |
KR101817497B1 (en) * | 2015-11-17 | 2018-01-11 | 주식회사 휴비츠 | Lens clamping device |
CN114935499B (en) * | 2022-03-30 | 2023-07-07 | 荣耀终端有限公司 | Clamping device and testing device |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1184496A (en) * | 1915-06-26 | 1916-05-23 | Bruno Berndt Stenvall | Grinding-fixture. |
US2293291A (en) * | 1940-05-29 | 1942-08-18 | Gaspari & Co Inc J | Lens grinding machine |
JPS4917015Y1 (en) * | 1969-03-17 | 1974-05-01 | ||
DE1947009A1 (en) * | 1969-09-17 | 1971-03-25 | Zeiss Carl Fa | Device for holding optical lenses during edge processing in grinding machines |
FR2079496A5 (en) * | 1970-02-03 | 1971-11-12 | Lunetiers Ste | |
FR2226824A5 (en) * | 1973-04-18 | 1974-11-15 | Asselin Ets | Soft jawed clamp gripping lenses - has inclinable jaw for clamping of prismatic lens for edge bevelling etc |
DE2506866C2 (en) * | 1975-02-18 | 1976-09-20 | Wernicke & Co GmbH, 4000 Düsseldorf | Lens holder with two coaxial lens holder halves |
JPS57201160A (en) * | 1981-06-05 | 1982-12-09 | Seiko Epson Corp | Back-up head chuck mechanism for eccentric lense machining unit |
JPH085001B2 (en) * | 1988-01-09 | 1996-01-24 | 株式会社トプコン | Jade machine |
DE4214266A1 (en) * | 1992-05-01 | 1993-11-04 | Loh Engineering Ag Oensingen | DEVICE FOR GUIDING A WORKPIECE OR TOOL IN THE PROCESSING OF TORICAL OR SPHERICAL SURFACES OF OPTICAL LENSES ON GRINDING OR POLISHING MACHINES |
JPH106191A (en) * | 1996-06-21 | 1998-01-13 | Sony Corp | Substrate grinding system |
JPH10156686A (en) * | 1996-12-03 | 1998-06-16 | Fuji Photo Optical Co Ltd | Holding pressure adjusting device of holding device for centering optical material |
-
1998
- 1998-10-22 FR FR9813262A patent/FR2784923B1/en not_active Expired - Lifetime
-
1999
- 1999-10-13 DE DE69902333T patent/DE69902333T2/en not_active Expired - Lifetime
- 1999-10-13 EP EP99402518A patent/EP0995546B1/en not_active Expired - Lifetime
- 1999-10-13 ES ES99402518T patent/ES2181378T3/en not_active Expired - Lifetime
- 1999-10-22 US US09/425,062 patent/US6231433B1/en not_active Expired - Lifetime
- 1999-10-22 JP JP30108999A patent/JP4526140B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0995546A1 (en) | 2000-04-26 |
DE69902333D1 (en) | 2002-09-05 |
US6231433B1 (en) | 2001-05-15 |
JP4526140B2 (en) | 2010-08-18 |
FR2784923B1 (en) | 2001-01-05 |
ES2181378T3 (en) | 2003-02-16 |
FR2784923A1 (en) | 2000-04-28 |
DE69902333T2 (en) | 2003-04-17 |
JP2000131657A (en) | 2000-05-12 |
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