EP0090752A1 - Smoothing and polishing machine for optical lenses - Google Patents

Smoothing and polishing machine for optical lenses Download PDF

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Publication number
EP0090752A1
EP0090752A1 EP83430010A EP83430010A EP0090752A1 EP 0090752 A1 EP0090752 A1 EP 0090752A1 EP 83430010 A EP83430010 A EP 83430010A EP 83430010 A EP83430010 A EP 83430010A EP 0090752 A1 EP0090752 A1 EP 0090752A1
Authority
EP
European Patent Office
Prior art keywords
lens
housing
lenses
support
spindle
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
EP83430010A
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German (de)
French (fr)
Other versions
EP0090752B1 (en
Inventor
Maurice Otto
Jean-Pierre Peridont
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.)
Etudes et Fabrications Optiques SA
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Etudes et Fabrications Optiques SA
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Application filed by Etudes et Fabrications Optiques SA filed Critical Etudes et Fabrications Optiques SA
Priority to AT83430010T priority Critical patent/ATE17092T1/en
Publication of EP0090752A1 publication Critical patent/EP0090752A1/en
Application granted granted Critical
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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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/02—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
    • 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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/0031—Machines having several working posts; Feeding and manipulating devices

Definitions

  • the present invention relates to a smoothing and polishing machine for optical lenses.
  • the technical sector of the invention is that of machines and devices used for surface finishing of glass and more particularly optical glasses.
  • polishing machines operating automatically and requiring a minimum of manpower. Polishing machines with semi-automatic operation are also known.
  • the objective of the present invention is the development of a machine making it possible either to "soften” or to polish optical lenses semi-automatically by treating the lenses face after face, or automatically, the lenses being treated on both sides after passing through the machine.
  • the smoothing or polishing machine for optical lenses comprising a frame on which is mounted at least one spindle intended to carry a softening or polishing tool, at least one lens-support-housing, means for delivering a polishing agent between the tool and the housing, means for bringing the lenses into contact with the tool to be softened or polished, means for putting lenses on the support housing and for removing the lenses after they have been smoothed or polished, the lens-support-housing is mounted for free rotation on said frame, which comprises an oscillating moving head on which the tool-holder spindle is rotated above said lens-support-housing, characterized in that the lens-support-housing is carried by a vertically displaceable pin, which is mounted in a sheath, flared at its upper part, to form two scopes extending horizontally e t in opposition on either side of the spindle and in that the casing comprises a skirt extending it downwards and comprising a flange extending towards the
  • the result of the invention is a machine for "softening" or polishing optical lenses comprising either a processing unit for surfacing the lenses semi-automatically, or comprising two units for surfacing the two faces of the lenses automatically .
  • FIG. 1 of the drawing schematically illustrates a machine according to the invention comprising, a frame 1 surrounded by a body having doors la for accessing the organs of the machine.
  • the machine comprises, at its upper part, an oscillating tool-carrying head 2 which is pivotally mounted about a horizontal axis 2a, which is situated at the rear end of an arm 2b and carries at its opposite end at the axis 2a, a movable orientable head 3.
  • This consists of a frame 3a and is mounted articulated on the arm 2b around an axis 4. It has on one side a toothed sector 3a which cooperates with a worm 5, carried by the arm 2b and controlled by means of an operating wheel 5a.
  • the polishing or smoothing tool is located in a protective screen, constituted by a bellows sleeve 6, which completely surrounds the tool to avoid projections of the polishing agent.
  • the tool is rotated by an electric motor 7 and a transmission composed for example of V-belts.
  • the movable orientable head 3 is illustrated on a larger scale in FIG. 2 of the drawing. It consists of a support 3 1 which is mounted rotatably the spindle tool 3 2 around ball 3 bearings 3/3 4.
  • the spindle 3 2 extends beyond the upper part of the support 3 1 and comprises, at its upper end, a grooved pulley 3 5 , which is wedged on the spindle by means of a key.
  • the adjustable head 3 also has, at its upper part, a casing 3 6 which envelops the part 3 5 and that, not shown, which is wedged on the motor output shaft 7 and the belts transmission trapezoid.
  • the spindle has at its lower part the polishing or smoothing tool 8.
  • This ( Figures 8 and 9) is in the form of a cylindrical plate.
  • FIG. 8 illustrates such a plate seen in diametrical section for surfacing the convex part of the lenses.
  • Its lower part 8 1 coming into contact with the lenses is concave and of a generally spherical shape, which is covered by a coating of synthetic material, for example polyurethane.
  • FIG. 9 illustrates the tool seen in diametral section for carrying out the surface treatment of the concave part of the lenses.
  • the lower part of the tool 8 2 coming into contact with the lenses is convex and of a generally spherical shape and is covered, like the part 8 1 of FIG. 8, by a polyurethane coating.
  • the tool 8 has, at its central part, a bore forming shoulders 8b / 8c to allow its mounting to the lower part of the tool holder spindle 3 2 .
  • the spindle 3 2 is cylindrical and has, at its lower part, a part 3 2 of larger diameter adopting the shape of a plate and on which plate the tool 8 is supported.
  • the plate has, in its center, a cylindrical centering boss 3 2 b, which penetrates into a cylindrical housing 8d, reserved for the upper part of the tool.
  • the spindle 3 2 is hollow at its central part and from its upper end to the plate 3 2 a and thus comprises a cylindrical chamber 3 2 c which opens at its upper end 3 2 d, which is coaxial with the spindle.
  • the chamber 3 2 c is extended in the axis of the spindle through the plate 3 2 a by a tapped hole 3 2 e into which the axis 9 for fixing the tool 8 on the spindle 3 2 is screwed.
  • This axis is cylindrical and is threaded at its part 9a to cooperate with the internal thread 3 2 e and comprises at its lower end, a cylindrical head 9b. larger diameter.
  • the axis 9 is hollow at its center and comprises, from its upper end to its lower end, a cylindrical duct 9c, extending up to the head 9b, a first cylindro-conical chamber 9d of larger diameter than said duct , and a second cylindrical-conical chamber 9d of larger diameter than said first chamber 9d.
  • the axis 9 has, at its upper end, a cylindrical housing .9f, extending approximately over the half-length of the axis.
  • This one comprises, in its central part, a pusher 9 1 extending: from its lower part to its upper part which it exceeds.
  • Said pusher 9 1 consists of a cylindrical rod 9 1 a extending. lower part, by a first cylindrical prominence 9 1b, this der - niere extended by a second protuberance 9 1 c.
  • the protrusions 9 1 c / 9 1 b and the rod 9 1 a are engaged respectively in the chambers 9e / 9d and in the conduit 9c.
  • the part of the pusher which extends outside the axis, at its upper part, is constituted by the head of a screw 9je, screwed into a tapped hole- reserved in the center of the rod 9 1 a.
  • a compression spring 9 1 f disposed in the housing 9 f, surrounds the rod 9 1 a and extends from the head of the screw 9 1 e to a shoulder 9 g on which the spring 9 1 f is supported.
  • the cylindrical prominence 9 1 c Under the pressure of the spring 9 1 f and in the initial position of the pusher 9 1 , the cylindrical prominence 9 1 c is in abutment in its housing 9e. In this position, said prominence is flush with the lower part of the axis.
  • the prominence 9 1 c has in its center a blind hole 9 1 g forming a hexagon socket to be able to maneuver the axis by means of a wrench and to screw it or unscrew it in the spindle 3 2 during the positioning or removing the tool 8.
  • the pusher is linked in rotation to the axis 9 by means of a pin 9 1 h extending diametrically to the axis and fixed to the latter by its ends , while being forced into reserved holes in the wall of the chamber 9d, which pin passes through a diametrical, rectangular lumen with rounded edges 9 1 j, reserved in the prominence 9 1 b.
  • the light 91j is large enough to allow the head of the screw 9 1 e to be erased when a pressure is exerted on its top, which has the effect of causing the protrusion 9 1 c to come out of the pusher and therefore separate the lens which remains stuck to the tool 8 at the end of the surfacing.
  • the pusher 9 1 In order not to damage the face of the glass brought into contact with the pusher, the latter comprises a washer made of flexible synthetic material, for example made of polyurethane 9 1 K. As can be seen in the. FIG. 4, the pusher 9 1 is, in its initial rest position, slightly retracted relative to the periphery 8 2 of the tool 8.
  • the pusher 9 1 is actuated by a rod 10, located in the cylindrical chamber 3 2 c and fixed to the movable rod 11a of a jack, for example pneumatic 11, mounted on the casing 3 6 of the movable head 3 coaxially with the rod 10 and pin 32.
  • the end 10a of the rod 10 is close to the head of the screw 9 1 e forming the upper part of the pusher 9 1 .
  • the separation of the lenses and the tool 8 is obtained by the jack 11, which when put under pressure, acts by means of the rod 10, on the pusher 9 1 .
  • the tool-holder oscillating head 2 is carried by a double-acting cylinder 12, articulated by its end 12a to the frame 1 of the machine and by its end 12b to the arm 2b of said head 2.
  • the oscillation of head 2 is obtained by means of an eccentric 13 wedged on the outlet of a gear motor 14 and a set of connecting rods 15/16.
  • the connecting rod 15 is articulated at the end 16a of the connecting rod 16, which is articulated at 2a to the arm 2b.
  • the adjustment of the positioning of the head 2 and of the smoothing or polishing tool with respect to the lens support-housing 17 is obtained by means of a flywheel 18, wedged at the end of a threaded axis 19 , mounted on the frame 1 and acting on a support 20, pivotally mounted on the said frame around a horizontal axis 21 on which support 20 is fixed the gear motor 14.
  • the lens-support housing 17 is carried by a pin 22, disposed in a cylindrical sheath 23, mounted to slide in a boss 1b of the frame 1 and extending vertically so that the upper face of the housing 17, on which the lens is supported, is in a horizontal plane at the time of this operation.
  • the sheath 23 has, at its upper part, a cap 23a, attached by screwing, and comprising a cylindrical part 23b which surrounds with a slight play the upper part of the boss 1b, which cylindrical part is extended upwards by a conical part 23c , which is flared at its upper end to form two bearing surfaces 23d diametrically opposite and extending in a horizontal plane.
  • These ranges 23d are shown in top view in Figure 10 of the drawing. They are delimited at their ends by a circular line 23d i of radius R and laterally by two parallel straight lines 23d 2 of spacing e, symmetrical with respect to the longitudinal axis of the spindle 22.
  • the latter is slidably mounted in the sheath 23, extends over the length of the latter and is fixed at its lower part to a jack, preferably pneumatic, with double effect 24.
  • the sheath 23 is adjustable in height on the boss lb in which it is mounted in a cylindrical duct 1c coaxial with said boss and has a flat 23e, reserved on the side of its lower part on which a locking screw 25 rests comprising an operating lever 25a cooperating with a tapping made in the boss 1b and extending perpendicular to the axis of the spindle 22 and of the sleeve 23.
  • the latter is extended, at its lower part, by a pinion 26, mounted in a housing 27 and meshing with an endless screw (not shown) mounted on a shaft 28 extending orthogonally to the pinion 26 and comprising, at its free end, an operating wheel 29.
  • the spindle 22 is free in translation along its longitudinal axis in the sheath 23 and is linked in rotation to it. It comprises, on the side of its upper part, a rectangular diametrical lumen with rounded edges 22a, in which is disposed a pin 30 extending transversely and force-fitted into reserved holes in the wall of the sheath 23.
  • the sheath is threaded at its lower periphery and cooperates with the internal thread 26a of the pinion 26.
  • Figures 6 and 7 illustrate the lens-support-housing. 17 in two embodiments.
  • the housing of Figure 6 is intended to receive the convex part of the lens to be surfaced; the housing of Figure 7, the concave portion of said lens.
  • the housing 17 is in a generally cylindrical shape and the carrier surface 17 1/17 2 of the lens extends orthogonally to its longitudinal axis.
  • the surface 17 1 of the housing of FIG. 6 is concave of a generally spherical shape and comprises, at its periphery, a flange 17 1 a so that the lens can be held laterally during the surfacing operation.
  • the surface 17 2 of the housing of Figure 7 is convex of a generally spherical shape and has at its periphery, a flange 17 2 has chamfered to laterally hold the lens during the surfacing operation.
  • the curved surfaces 17 1/17 2 are covered by a surface coating 17 3, consisting of cork and rubber agglomerate ,. which covering comprises for example perforations 17 3 a distributed parallel to its periphery and a reserved perforation in its center 17 3 b. These perforations form, when the coating is fixed, for example by gluing, on said curved surfaces, blind holes containing air, which has the effect of avoiding the adhesion of the lenses during polishing in order to facilitate their withdrawal at end of the surfacing operation.
  • the limping extends downwardly from a surrounding portion made by the general shape of cylindrical skirt 17a, having a conical portion 17b which joins the upper part which comprises the bearing surface 17 1/17 2.
  • Part 17a has a rim 17c extending towards the inside of the housing, which rim is in a plane perpendicular to the longitudinal axis of the housing and delimits a circular opening 17d and therefore is parallel to the upper part which has the surfaces d 'platen 17 1/17 2.
  • the housing further includes, below the bearing surface 17 1/17 2 and coaxially thereto and to the opening 17d, a tapered seat 17, the generatrices of the wall converge at a point located beyond the surface of platen 17 1/17 2 and on the longitudinal axis of the housing.
  • the bottom of this housing forms a bowl 17f of a more pronounced taper than that of lateral sarparoi.
  • FIG. 5 of the drawing which illustrates the housing 17 represented in FIG. 6, carried by the pin 22, mounted in the sheath 23.
  • the pin 22 has, at its upper part, a head 31 mounted for free rotation, which head is conical and of the same conicity as the housing 17e of the housing in which it is engaged. It consists of two parts: a central part 31a forming a sort of tray at its lower part and a conical part 31b which envelops said central part 31a, which part 31b is mounted for rotation. on the part 31a on a ball bearing 32, fitted around the central part 31a and in a cylindrical housing 31d of the conical part 31b.
  • the central part 31a which is fixed, comprises a conical housing 31a 1 , the apex of which is directed towards the side of the upper part of, the head 31., which apex is reserved in.
  • a wear part 33 made of steel carbide.
  • the head 31 is supported on a pivot 34, also made of carbide steel, which is in the form of a cylindrical axis whose free end is conical and of the same conicity as that of the housing 31a l and of the part reported 33.
  • the pivot 34 is mounted on a cylindrical end piece 35 comprising a cylindrical and threaded coaxial extension, screwed into a tapped hole 22b, reserved for the center and the upper part of the spindle 22.
  • a cup 36 of cylindrical form conical and extending downward, envelops the upper part of the sheath 23 which forms a cylindrical boss 23e at this point.
  • the sheath comprises, at the level of the boss 23e, an annular housing 23f in which is disposed a lip seal 37, the lip of which rests around the pin 22.
  • the diameter of the circular opening 17d is less than the diameter (2 R) of the flared part forming the bearing surfaces 23d and greater than its width e. This provision is necessary to allow the establishment of the housing 17 on the head 31 and its removal.
  • the spindle 22 is placed in the position shown in FIG. 5, the housing is placed in an inclined position, so that one of the bearing surfaces 23d is passed through the opening 17d.
  • the housing is then placed in a substantially horizontal position and is moved to the side of the opposite staff to pass the latter through the opening 17d; simultaneously with these two operations, the head 31 is engaged in the conical housing 17th.
  • the housing In the position of Figure 5, the housing is in position to perform the surfacing of the lenses.
  • the rim 17c being distant from the two bearing surfaces 23d, it can oscillate around the pivot 34 while being driven in rotation around the bearing 32 under the effect of the tool-holder oscillating head 2, the tool 8 of which attacks the lens in a so-called "strip" position, that is to say on the side of the periphery of the lens.
  • the housing 17 is pushed towards the side of the oscillating head 2, under the effect of the jack 24, which carries the pin 22 until the rim 17c of the housing comes to bear on the surfaces 23d of the sheath 23, such as that is illustrated in Figure 3 of the drawing. In this position, the portion of housing 17 1/17 2 which receives the lenses is fixed in a horizontal plane.
  • FIG. 11 of the drawing schematically illustrates a machine comprising a lens surfacing unit.
  • Stations A and B / C are located on two orthogonal axes XX 1 / YY 1 which intersect at a point 0.
  • Station A is located in front of the operator and includes the lens-support-housing 17 au- above which is the tool holder oscillating head 2.
  • Station B and station C are on the same line YY 1 .
  • Station B is located to the right of station A, station C on the left.
  • the lens supply station B comprises a vertical loader 38 in the form of a hollow cylindrical body in which the lenses are stacked above a pusher.
  • the station C for evacuating the machined lenses consists of a conveyor 39, the carrying strand of the mat 39a moves in the direction of the arrow F.
  • the end 39b of the conveyor, station A and station B are located on a circumference 40 of radius R I.
  • the machine also includes a set of two arms 41/42, pivotally mounted around an axis located at the point 0 of crossing lines XX 1 / YY 1 .
  • the arms 41/42 are, in the same horizontal plane, and are connected to each other by a part 43. They each have a part 41a / 42a, which parts diverge from point 0 and a part 41b / 42b which is parallel to the line XX I , when the arms are in their initial rest position, as shown in FIG. 11.
  • Each of the arms carries, at its free end, a suction cup 44/45.
  • suction cups are located at the intersection of the bisectors of the angles of the orthogonal lines XX 1 / YY 1 and of the circumference 40 on which the suction cups move.
  • the suction cup 44 is located at the intersection 46 of the circumference 40 and the bisecting line OI of the angle AOC
  • the suction cup 45 is located at the intersection 47 of the bisecting line OJ of the AOB angle.
  • the OI / OJ lines form a right angle.
  • each of the suction cups 44/45 there ends a compressed air line 48 and a vacuum air line 49.
  • These lines are fixed to the arms and are connected by hoses to a vacuum pump for the line 49 and to a compressor. of air for the pipe 48.
  • the lenses whose surfacing was done on one side are placed in a loader 38 to perform the surfacing of the other side not yet machined by performing the same operations as those which have just been described with reference to the letters a to h.
  • FIG. 12 schematically represents a machine comprising two lens surface treatment units for machining the latter on the two faces.
  • the two units I / II are juxtaposed.
  • Unit I has three stations A, B, C.
  • Stations A and B / C are located on two orthogonal axes XX 1 / YY 1 which intersect at a point 0.
  • Unit II also includes three stations A 1 , B 1 , C 1 .
  • a 1 - Surface treatment station A 1 - Surface treatment station.
  • Stations A 1 and B 1 / C 1 are located on two orthogonal axes ZZ 1 / YY 1 which intersect at a point 0 1 .
  • Positions B, C, B 1 , C 1 are aligned on the YY 1 axis.
  • a transfer device 51 also called a reversal member and comprising a lens receiver 51a carried by an arm 51b.
  • the pivot axis 50 is' on axis YY 1 in the middle of the distance between positions B and 1 C.
  • the lenses 51a of receiver 52 describes a circumference for passing the lenses of the position C to the position B 1 -.
  • the arms 41/42 of the two units I II are in the same horizontal plane and are identical and arranged in the same way as on the machine described with reference to FIG. 11 previously described.
  • station A 1 of unit II there is a housing 17 surmounted by an oscillating head carrying tool 2; at the station CI is a conveyor 39 identical to that previously described.
  • Unit II comprises at station B 1 a relay support 53, comprising a hollow circular receptacle 53a, covered with a surface coating of flexible synthetic material, for example polyurethane and in which receptacle, the lenses having just been treated on one side are deposited by the turning member 51.
  • a relay support 53 comprising a hollow circular receptacle 53a, covered with a surface coating of flexible synthetic material, for example polyurethane and in which receptacle, the lenses having just been treated on one side are deposited by the turning member 51.
  • a relay support 53 comprising a hollow circular receptacle 53a, covered with a surface coating of flexible synthetic material, for example polyurethane and in which receptacle, the lenses having just been treated on one side are deposited by the turning member 51.
  • At the center of the receptacle 53a is reserved an orifice through which a jet of water is delivered to wash the face of the lens previously machined.
  • the turning member 51 pivots around the axis 50, under the effect of a double-acting cylinder (not shown), the movable rod of which carries a rack which meshes with a pinion wedged on said axis 50.
  • the arm 51b which carries the lens receiver 51a, rotates on itself by 180 °, so that the lens deposited on the receiver 51a at station C is returned and deposited on the relay support 53 of station B 1 .
  • Said receiver 51a is in the form of a circular-shaped casing with a diameter slightly greater than that of the lenses and the bottom of which is covered with a surface coating, for example made of polyurethane.
  • the rotation drive of the arm 51b on itself during the 180 ° pivoting of the turning member is obtained by means of a conical couple of which one pinion is wedged at the end of the arm 51b and the other at the end of axis 50.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Eyeglasses (AREA)
  • Lenses (AREA)

Abstract

A machine is of the type comprising an oscillating movable head with a tool-holding spindle, driven in rotation above a lens-support. The lens-support is borne by a vertically movable spindle which is mounted inside a sleeve, flared out at its upper part to form two bearing surfaces and, the lens-support comprises a ledge which surrounds the part of the sleeve containing the bearing surfaces. The lens-support rests on a head mounted for free rotation in a fixed pivot so that when the spindle is moved upwardly, the lens-support is immobilized in a horizontal position, to deposit the lenses to be polished thereon, or to remove them after the polishing operation. When the spindle is moved downwardly, the lens-support, then at a distance from the bearing surfaces, can oscillate freely during the lens-polishing operation, under the effect of the movable oscillating head.

Description

La présente invention a pour objet une machine doucisseuse et polisseuse pour lentilles optiques.The present invention relates to a smoothing and polishing machine for optical lenses.

Le secteur technique de l'invention est celui des machines et dispositifs utilisés pour lesurfaçage du verre et plus particulièrement des verres optiques.The technical sector of the invention is that of machines and devices used for surface finishing of glass and more particularly optical glasses.

On sait que la fabrication des lentilles optiques passe par plusieurs étapes. Les lentilles sont d'abord ébauchées, elles sont ensuite "doucies" et sont enfin polies.We know that the manufacture of optical lenses goes through several stages. The lenses are first roughed out, then they are "soft" and are finally polished.

On connaît des machines ébaucheuses et doucisseuses fonctionnant automatiquement et nécessitant un minimum de main-d'oeuvre. On connaît également des machines polisseuses à fonctionnement semi-automatique.We know roughing and smoothing machines operating automatically and requiring a minimum of manpower. Polishing machines with semi-automatic operation are also known.

L'objectif de la présente invention est l'élaboration d'une machine permettant indifféremment de "doucir" ou de polir des lentilles optiques de façon semi-automatique en traitant les lentilles face après face, ou de façon automatique, les lentilles étant traitées sur les deux faces après leur passage dans la machine.The objective of the present invention is the development of a machine making it possible either to "soften" or to polish optical lenses semi-automatically by treating the lenses face after face, or automatically, the lenses being treated on both sides after passing through the machine.

Cet objectif est atteint par la machine doucisseuse ou polisseuse pour lentilles optiques selon l'invention comportant un bâti sur lequel est monté au moins une broche destinée à porter un outil à doucir ou à polir, au moins un boîtier-support-de-lentille, des moyens pour délivrer un agent de polissage entre l'outil et le boîtier, des moyens pour mettre les lentilles au contact de l'outil à doucir ou à polir, des moyens pour mettre des lentilles sur le boîtier-support et pour enlever les lentilles après qu'elles aient été doucies ou polies, dont le boîtier-support-de-lentille est monté à rotation libre sur ledit bâti, lequel comporte une tête mobile oscillante sur laquelle la broche-porte-outil est entraînée en rotation au-dessus dudit boîtier-support-de-lentille, caractérisé en ce que le boîtier-suppbrt-de-lentille est porté par une broche déplaçable verticalement, laquelle est montée dans un fourreau, évasé à sa partie supérieure, pour former deux portées s'étendant horizontalement et en opposition de part et d'autre de la broche et en ce que le boîtier comporte une jupe le prolongeant vers le bas et comportant un rebord s'étendant vers le centre du boîtier pour envelopper la partie du fourreau qui comporte lesdites portées, lequel boîtier est en appui sur une tête montée à rotation libre sur un pivot fixe situé à la partie supérieure de ladite broche, de telle sorte que lorsque la broche est déplacée vers le haut, le boîtier venant en appui sur lesdites portées est immobilisé dans une position horizontale pour y déposer les lentilles en vue de leur surfaçage ou pour les enlever après qu'elles aient été traitées et que lorsque la broche est déplacée vers le bas, le boîtier, éloigné desdites portées, peut osciller librement pendant le surfaçage des lentilles sous l'effet de la tête mobile oscillante.This objective is achieved by the smoothing or polishing machine for optical lenses according to the invention comprising a frame on which is mounted at least one spindle intended to carry a softening or polishing tool, at least one lens-support-housing, means for delivering a polishing agent between the tool and the housing, means for bringing the lenses into contact with the tool to be softened or polished, means for putting lenses on the support housing and for removing the lenses after they have been smoothed or polished, the lens-support-housing is mounted for free rotation on said frame, which comprises an oscillating moving head on which the tool-holder spindle is rotated above said lens-support-housing, characterized in that the lens-support-housing is carried by a vertically displaceable pin, which is mounted in a sheath, flared at its upper part, to form two scopes extending horizontally e t in opposition on either side of the spindle and in that the casing comprises a skirt extending it downwards and comprising a flange extending towards the center of the casing to envelop the part of the sheath which comprises said spans, which housing is supported on a head mounted with free rotation on a fixed pivot located at the upper part of said spindle, so that when the spindle is moved upwards, the housing coming to rest on said surfaces is immobilized in a horizontal position to deposit the lenses there in order to surface them or to remove them after they have been treated and only when the spindle is moved downwards, the housing, distant from said surfaces, can oscillate freely during surfacing of the lenses under the effect of the oscillating moving head.

Le résultat de l'invention est une machine pour "doucir" ou polir des lentilles optiques comportant soit une unité de traitement pour surfacer les lentilles de façon semi-automatique, soit comportant deux unités pour réaliser le surfaçage des deux faces des lentilles de façon automatique.The result of the invention is a machine for "softening" or polishing optical lenses comprising either a processing unit for surfacing the lenses semi-automatically, or comprising two units for surfacing the two faces of the lenses automatically .

Les avantages d'une telle machine résident principalement dans le fait que plusieurs unités peuvent être conduites par un seul opérateur.The advantages of such a machine lie mainly in the fact that several units can be operated by a single operator.

D'autres avantages et les caractéristiques de la machine selon l'invention ressortiront encore à la lecture de la description suivante donnée à titre d'exemple non limitatif des diverses parties et des organes de la machine, en référence.au dessin annexé sur lequel :

  • - la figure 1 est une vue de côté de la machine selon l'invention;
  • - la figure 2 est une vue en coupe longitudinale de la tête oscillante;
  • - la figure 3 est une vue en coupe partielle de la machine illustrant le montage du boîtier-support de lentille sur la broche qui le porte;
  • - la figure 4 est une vue en coupe partielle de la partie inférieure de la tête oscillante illustrant plus particulièrement l'outil de doucissage ou de polissage et le dispositif d'éjection des lentilles après surfaçage;
  • - la figure 5 est une vue en coupe illustrant, à plus grande échelle, le montage du boîtier-support de lentille;
  • - la figure 6 est une vue en coupe du boîtier dont la surface d'appui des lentilles est concave avec une demi-vue de dessus du revêtement de ladite surface;
  • - la figure 7 est une vue en coupe du boîtier dont la surface d'appui des lentilles est convexe, avec une demi-vue de dessus du revêtement de ladite surface;
  • -.la figure 8 est une vue en coupe d'un outil pour surfacer la partie convexe des lentilles;
  • - la figure 9 est une vue en coupe d'un outil pour surfacer la partie concave des lentilles;
  • - la figure 10 est une vue de dessus du fourreau dans lequel est montée la broche qui porte le boîtier-support de lentille.
  • - la figure 11 est une vue de dessus schématique illustrant le dispositif de transfert d'une machine comportant une unité de sur façage pour doucir ou polir les lentilles sur une face;
  • - la figure 12 est une vue de dessus schématique illustrant le dispositif de transfert d'une machine comportant deux unités de surfaçage pour doucir ou polir les lentilles sur les deux faces.
Other advantages and characteristics of the machine according to the invention will become apparent on reading the following description given by way of non-limiting example of the various parts and organs of the machine, with reference to the attached drawing in which:
  • - Figure 1 is a side view of the machine according to the invention;
  • - Figure 2 is a longitudinal sectional view of the oscillating head;
  • - Figure 3 is a partial sectional view of the machine illustrating the mounting of the lens support housing on the spindle which carries it;
  • - Figure 4 is a partial sectional view of the lower part of the oscillating head illustrating more particularly the smoothing or polishing tool and the lens ejection device after surfacing;
  • - Figure 5 is a sectional view illustrating, on a larger scale, the mounting of the lens support housing;
  • - Figure 6 is a sectional view of the housing, the contact surface of the lenses is concave with a half-view from above of the coating of said surface;
  • - Figure 7 is a sectional view of the housing, the contact surface of the lenses is convex, with a half-view from above of the coating of said surface;
  • FIG. 8 is a sectional view of a tool for surfacing the convex part of the lenses;
  • - Figure 9 is a sectional view of a tool for surfacing the concave part of the lenses;
  • - Figure 10 is a top view of the sheath in which is mounted the pin which carries the lens support housing.
  • - Figure 11 is a schematic top view illustrating the transfer device of a machine comprising an over-face unit for softening or polishing the lenses on one side;
  • - Figure 12 is a schematic top view illustrating the transfer device of a machine comprising two surfacing units to soften or polish the lenses on both sides.

On se reporte d'abord à la figure 1 du dessin qui illustre schématiquement une machine selon l'invention comprenant, un bâti 1 entouré par une carrosserie comportant des portes la pour accéder aux organes de la machine.Referring first to Figure 1 of the drawing which schematically illustrates a machine according to the invention comprising, a frame 1 surrounded by a body having doors la for accessing the organs of the machine.

La machine comporte, à sa partie supérieure, une tête oscil- lante porte-outil 2 qui est montée à pivotement autour d'un axe horizontal 2a, lequel est situé à l'extrémité arrière d'un bras 2b et porte à son extrémité opposée a l'axe 2a, une tête mobile orientable 3. Celle-ci se compose d'un châssis 3a et'est montée articulée sur le bras 2b autour d'un axe 4. Elle comporte sur un côté un secteur denté 3a qui coopère avec une vis sans fin 5, portée par le bras 2b et commandée au moyen d'un volant de manoeuvre 5a. L'outil de polissage ou de doucissage est situé dans un écran de protection, constitué par une manche à soufflet 6, qui entoure complètement l'outil pour éviter les projections de l'agent de polissage.The machine comprises, at its upper part, an oscillating tool-carrying head 2 which is pivotally mounted about a horizontal axis 2a, which is situated at the rear end of an arm 2b and carries at its opposite end at the axis 2a, a movable orientable head 3. This consists of a frame 3a and is mounted articulated on the arm 2b around an axis 4. It has on one side a toothed sector 3a which cooperates with a worm 5, carried by the arm 2b and controlled by means of an operating wheel 5a. The polishing or smoothing tool is located in a protective screen, constituted by a bellows sleeve 6, which completely surrounds the tool to avoid projections of the polishing agent.

L'outil est entraîné en rotation par un moteur électrique 7 et une transmission composée par exemple de courroies trapézoïdales. La tête mobile orientable 3 est illustrée à plus grande échelle à la figure 2 du dessin. Elle se compose d'un support 31 dans lequel est montée à rotation la broche porte-outil 32 autour de roulements à billes 33/34. La broche 32 s'étend au-delâ de la partie supérieure du support 31 et comporte, à son extrémité supérieure, une poulie à gorge 35, laquelle est calée sur la broche au moyen d'une clavette.The tool is rotated by an electric motor 7 and a transmission composed for example of V-belts. The movable orientable head 3 is illustrated on a larger scale in FIG. 2 of the drawing. It consists of a support 3 1 which is mounted rotatably the spindle tool 3 2 around ball 3 bearings 3/3 4. The spindle 3 2 extends beyond the upper part of the support 3 1 and comprises, at its upper end, a grooved pulley 3 5 , which is wedged on the spindle by means of a key.

La tête orientable 3 comporte encore, à sa partie supérieure, un carter 36 qui enveloppe la partie 35 et celle, non représentée, qui est calée sur l'arbre du sortie du moteur 7 et les courroies trapézoidales de transmission.The adjustable head 3 also has, at its upper part, a casing 3 6 which envelops the part 3 5 and that, not shown, which is wedged on the motor output shaft 7 and the belts transmission trapezoid.

La broche comporte à sa partie inférieure l'outil de polissage ou de doucissage 8. Celui-ci (figures 8 et 9) se présente sous la forme d'un plateau cylindrique. La figure 8 illustre un tel plateau vu en coupe diamétrale pour surfacer la partie convexe des lentilles. Sa partie inférieure 81 venant au contact des lentilles est concave et d'une forme générale sphérique, laquelle est recouverte par un revêtement en matière synthétique, par exemple du polyuréthane. La figure 9 illustre l'outil vu en coupe diamétrale pour effectuer le traitement de surface de la partie concave des lentilles. La partie inférieure de l'outil 82 venant au contact des lentilles est convexe et d'une forme générale sphérique et est recouverte, comme la partie 81 de la figure 8, par un revêtement en polyuréthane.The spindle has at its lower part the polishing or smoothing tool 8. This (Figures 8 and 9) is in the form of a cylindrical plate. FIG. 8 illustrates such a plate seen in diametrical section for surfacing the convex part of the lenses. Its lower part 8 1 coming into contact with the lenses is concave and of a generally spherical shape, which is covered by a coating of synthetic material, for example polyurethane. FIG. 9 illustrates the tool seen in diametral section for carrying out the surface treatment of the concave part of the lenses. The lower part of the tool 8 2 coming into contact with the lenses is convex and of a generally spherical shape and is covered, like the part 8 1 of FIG. 8, by a polyurethane coating.

L'outil 8 comporte, à sa partie centrale, un alésage formant des épaulements 8b/8c pour permettre son montage à la partie inférieure de la broche porte-outil 32.The tool 8 has, at its central part, a bore forming shoulders 8b / 8c to allow its mounting to the lower part of the tool holder spindle 3 2 .

La broche 32 est cylindrique et comporte, à sa partie inférieure, une partie 32a de plus grand diamètre adoptant la forme d'un plateau et sur lequel plateau l'outil 8 est en appui. Le plateau comporte, en son centre, un bossage cylindrique de centrage 32b, lequel pénètre dans un logement cylindrique 8d, réservé à la partie supérieure de l'outil.The spindle 3 2 is cylindrical and has, at its lower part, a part 3 2 of larger diameter adopting the shape of a plate and on which plate the tool 8 is supported. The plate has, in its center, a cylindrical centering boss 3 2 b, which penetrates into a cylindrical housing 8d, reserved for the upper part of the tool.

La broche 32 est creuse à sa partie centrale et de son extrémité supérieure jusqu'au plateau 32a et comporte ainsi une chambre cylindrique 32c qui débouche à son extrémité supérieure 32d, laquelle est coaxiale à la broche.The spindle 3 2 is hollow at its central part and from its upper end to the plate 3 2 a and thus comprises a cylindrical chamber 3 2 c which opens at its upper end 3 2 d, which is coaxial with the spindle.

La chambre 32c se prolonge dans l'axe de la broche à travers le plateau 32a par un trou taraudé 32e dans lequel se visse l'axe 9 de fixation de l'outil 8 sur la broche 32. Cet axe est cylindrique et est fileté à sa partie 9a pour coopérer avec le taraudage 32e et comporte à son extrémité inférieure, une tête cylindrique 9b. de plus fort diamètre. L'axe 9 est creux en son centre et comporte, de son extrémité supérieure a son extrémité inférieure, un conduit cylindrique 9c, s'étendant jusqu'à la tête 9b, une première chambre cylindro-conique 9d de plus fort diamètre que ledit conduit, et une secondechambre cylindro-conique 9d de plus fort diamètre que ladite première chambre 9d. L'axe 9 comporte, à son extrémité supérieure, un logement cylindrique .9f, s'étendant approximativement sur la demi-longueur de l'axe. Celui-ci comporte, dans sa partie centrale, un poussoir 91 s'étendant : de sa partie inférieure jusqu'à sa partie supérieure qu'il dépasse. Ledit poussoir 91 se compose d'une tige cylindrique 91a se prolongeant. partie basse, par une première proéminence cylindrique 91b, cette der- nière se prolongeant par une deuxième proéminence 91c.The chamber 3 2 c is extended in the axis of the spindle through the plate 3 2 a by a tapped hole 3 2 e into which the axis 9 for fixing the tool 8 on the spindle 3 2 is screwed. This axis is cylindrical and is threaded at its part 9a to cooperate with the internal thread 3 2 e and comprises at its lower end, a cylindrical head 9b. larger diameter. The axis 9 is hollow at its center and comprises, from its upper end to its lower end, a cylindrical duct 9c, extending up to the head 9b, a first cylindro-conical chamber 9d of larger diameter than said duct , and a second cylindrical-conical chamber 9d of larger diameter than said first chamber 9d. The axis 9 has, at its upper end, a cylindrical housing .9f, extending approximately over the half-length of the axis. This one comprises, in its central part, a pusher 9 1 extending: from its lower part to its upper part which it exceeds. Said pusher 9 1 consists of a cylindrical rod 9 1 a extending. lower part, by a first cylindrical prominence 9 1b, this der - niere extended by a second protuberance 9 1 c.

Les proéminences 91c/91b et la tige 91a sont engagées respectivement dans les chambres 9e/9d et dans le conduit 9c. La partie du poussoir qui s'étend à l'extérieur de l'axe, à sa partie supérieure, est constituée par la tête d'une vis 9je, vissée dans un trou taraudé- réservé au centre de la tige 91a. Un ressort de compression 91f, disposé dans le logement 9f, entoure la tige 91a et s'étend de la tête de la vis 91e jusqu'à un épaulement 9g sur lequel le ressort 91f est en appui.The protrusions 9 1 c / 9 1 b and the rod 9 1 a are engaged respectively in the chambers 9e / 9d and in the conduit 9c. The part of the pusher which extends outside the axis, at its upper part, is constituted by the head of a screw 9je, screwed into a tapped hole- reserved in the center of the rod 9 1 a. A compression spring 9 1 f, disposed in the housing 9 f, surrounds the rod 9 1 a and extends from the head of the screw 9 1 e to a shoulder 9 g on which the spring 9 1 f is supported.

Sous la pression du ressort 91f et dans la position initiale du poussoir 91, la proéminence cylindrique 91c est en butée dans son logement 9e. Dans cette position, ladite proéminence affleure la partie inférieure de l'axe.Under the pressure of the spring 9 1 f and in the initial position of the pusher 9 1 , the cylindrical prominence 9 1 c is in abutment in its housing 9e. In this position, said prominence is flush with the lower part of the axis.

La proéminence 91c comporte en son centre un trou borgne 91g formant un six pans creux pour pouvoir manoeuvrerl'axe au moyen d'une clé et le visser ou de dévisser dans la broche 32 lors de la mise en place ou de l'enlèvement de l'outil 8. Pour ce faire, le poussoir est lié en rotation à l'axé 9 au moyen d'une goupille 91h s'étendant diamétralement à l'axe et fixée à celui-ci par ses extrémités, en étant em- manchéeforcée dans des trous réservés dans la paroi de la chambre 9d, laquelle goupille traverse une lumière diamétrale, rectangulaire à bords arrondis 91j, réservée dans la proéminence 91b. La lumière 91j est suffisamment grande pour permettre l'effacement de la tête de la vis 91e lorsqu'on exerce une pression sur son sommet, ce qui a pour effet de provoquer la sortie de la proéminence 91c du poussoir et donc de séparer la lentille restée collée à l'outil 8 à la fin du surfaçage.The prominence 9 1 c has in its center a blind hole 9 1 g forming a hexagon socket to be able to maneuver the axis by means of a wrench and to screw it or unscrew it in the spindle 3 2 during the positioning or removing the tool 8. To do this, the pusher is linked in rotation to the axis 9 by means of a pin 9 1 h extending diametrically to the axis and fixed to the latter by its ends , while being forced into reserved holes in the wall of the chamber 9d, which pin passes through a diametrical, rectangular lumen with rounded edges 9 1 j, reserved in the prominence 9 1 b. The light 91j is large enough to allow the head of the screw 9 1 e to be erased when a pressure is exerted on its top, which has the effect of causing the protrusion 9 1 c to come out of the pusher and therefore separate the lens which remains stuck to the tool 8 at the end of the surfacing.

Dans le but de ne pas détériorer la face du verre mise au contact du poussoir, celui-ci comporte une rondelle en matière synthétique souple, par exemple en polyuréthane 91K. Comme on peut le voir sur la. figure 4, le poussoir 91 est, dans sa position initiale de repos, légèrement rétracté par rapport à la périphérie 82 de l'outil 8.In order not to damage the face of the glass brought into contact with the pusher, the latter comprises a washer made of flexible synthetic material, for example made of polyurethane 9 1 K. As can be seen in the. FIG. 4, the pusher 9 1 is, in its initial rest position, slightly retracted relative to the periphery 8 2 of the tool 8.

Le poussoir 91 est actionné par une tige 10, située dans la chambre cylindrique 32c et fixée à la tige mobile 11a d'un vérin, par exemple pneumatique 11, monté sur le carter 36 de la tête mobile 3 coaxialement à la tige 10 et à la broche 32. L'extrémité 10a de la tige 10 est à proximité de la tête de la vis 91e formant la partie supérieu-, re du poussoir 91. La séparation des lentilles et de l'outil 8 est obtenue par le vérin 11, qui mis en pression, agit par l'intermédiaire de la tige 10, sur le poussoir 91. La tête oscillante porte-outil 2 est portée par un vérin à double effet 12, articulé par son extrémité 12a au bâti 1 de la machine et par son extrémité 12b au bras 2b de ladite tête 2. L'oscillation de la tête 2 est obtenue au moyen d'un excentrique 13 calé sur l'abre de sortie d'un moto-réducteur 14 et d'un ensemble de bielles 15/16. La bielle 15 est articulée à l'extrémité 16a de la bielle 16, laquelle est articulée en 2a au bras 2b. Le réglage du positionnement de la tête 2 et de l'outil de doucissage ou de polissage par rapport au boîtier-support-de-lentille 17 est obtenu au moyen d'un volant 18, calé à l'extrémité d'un axe fileté 19, monté sur le bâti 1 et'agissant sur un support 20, monté pivotant sur ledit bâti au tour d'un axe horizontal 21 sur lequel support 20 est fixé le moto-réducteur 14.The pusher 9 1 is actuated by a rod 10, located in the cylindrical chamber 3 2 c and fixed to the movable rod 11a of a jack, for example pneumatic 11, mounted on the casing 3 6 of the movable head 3 coaxially with the rod 10 and pin 32. The end 10a of the rod 10 is close to the head of the screw 9 1 e forming the upper part of the pusher 9 1 . The separation of the lenses and the tool 8 is obtained by the jack 11, which when put under pressure, acts by means of the rod 10, on the pusher 9 1 . The tool-holder oscillating head 2 is carried by a double-acting cylinder 12, articulated by its end 12a to the frame 1 of the machine and by its end 12b to the arm 2b of said head 2. The oscillation of head 2 is obtained by means of an eccentric 13 wedged on the outlet of a gear motor 14 and a set of connecting rods 15/16. The connecting rod 15 is articulated at the end 16a of the connecting rod 16, which is articulated at 2a to the arm 2b. The adjustment of the positioning of the head 2 and of the smoothing or polishing tool with respect to the lens support-housing 17 is obtained by means of a flywheel 18, wedged at the end of a threaded axis 19 , mounted on the frame 1 and acting on a support 20, pivotally mounted on the said frame around a horizontal axis 21 on which support 20 is fixed the gear motor 14.

Le boîtier-support-de-lentille 17 est porté par une broche 22, disposée dans un fourreau cylindrique 23, monté coulissant dans un bossage lb du bâti 1 et s'étendant verticalement de telle sorte que'la face supérieure du boîtier 17, sur laquelle la lentille est mise en appui, est dans un plan horizontal au moment de cette opération.The lens-support housing 17 is carried by a pin 22, disposed in a cylindrical sheath 23, mounted to slide in a boss 1b of the frame 1 and extending vertically so that the upper face of the housing 17, on which the lens is supported, is in a horizontal plane at the time of this operation.

Le fourreau 23 comporte,à sa partie supérieure, un chapeau 23a, rapporté par vissage, et comportant une partie cylindrique 23b qui entoure avec un léger jeu la partie supérieure du bossage 1b, laquelle partie cylindrique se prolonge vers le haut par une partie conique 23c, laquelle est évasée à son extrémité supérieure pour former deux portées 23d diamétralement opposées et s'étendant dans un plan horizontal. Ces portées 23d sont représentées en vue de dessus à la figure 10 du dessin. Elles sont délimitées a leur extrémité par une ligne'circulaire 23di de rayon R et latéralement par deux lignes droites parallèles 23d2 d'écartement e, symétriques par rapport à l'axe longitudinal de la broche 22. Celle-ci est montée coulissante dans le fourreau 23, s'étend sur la longueur de celui-ci et est fixée à sa partie inférieure à un vérin, de préférence pneumatique, à double effet 24. Le fourreau 23 est réglable en hauteur sur le bossage lb dans lequel il est monté dans un conduit cylindrique 1c coaxial audit bossage et comporte un méplat 23e, réservé du côté de sa partie inférieure sur lequel s'appuie une vis de blocage 25 comportant un levier de manoeuvre 25a coopérant avec un taraudage pratiqué dans le bossage 1b et s'étendant perpendiculairement à l'axe de la broche 22 et du fourreau 23. Celui-ci se prolonge, à sa partie inférieure, par un pignon 26, monté dans un boîtier 27 et engrè- nant avec une vis sans fin (non représentée) montée sur un arbre 28 s'étendant orthogonalement au pignon 26 et comportant, à son extrémité libre, un volant de manoeuvre 29. La broche 22 est libre en translation suivant son axe longitudinal dans le fourreau 23 et est liée en rotation à celui-ci. Elle comporte, du côté de sa partie supérieure, une lumière diamétrale rectangulaire à bords arrondis 22a, dans laquelle est disposée une goupille 30 s'étendant transversalement et emmanchée forcée dans des trous réservés dans la paroi du fourreau 23. Le fourreau est fileté à sa périphérie inférieure et coopère avec le filetage interne 26a du pignon 26. Lorsque la vis de blocage 25 est desserrée, on comprend qu'en manoeuvrant le volant 29 dans un sens ou dans l'autre, on provoque le déplacement dans le sens vertical, vers le haut ou vers le bas du fourreau 23 et de la broche 22. Lorsqu'on a atteint la position désirée, l'ensemble est immobilisé par la vis de blocage 25.The sheath 23 has, at its upper part, a cap 23a, attached by screwing, and comprising a cylindrical part 23b which surrounds with a slight play the upper part of the boss 1b, which cylindrical part is extended upwards by a conical part 23c , which is flared at its upper end to form two bearing surfaces 23d diametrically opposite and extending in a horizontal plane. These ranges 23d are shown in top view in Figure 10 of the drawing. They are delimited at their ends by a circular line 23d i of radius R and laterally by two parallel straight lines 23d 2 of spacing e, symmetrical with respect to the longitudinal axis of the spindle 22. The latter is slidably mounted in the sheath 23, extends over the length of the latter and is fixed at its lower part to a jack, preferably pneumatic, with double effect 24. The sheath 23 is adjustable in height on the boss lb in which it is mounted in a cylindrical duct 1c coaxial with said boss and has a flat 23e, reserved on the side of its lower part on which a locking screw 25 rests comprising an operating lever 25a cooperating with a tapping made in the boss 1b and extending perpendicular to the axis of the spindle 22 and of the sleeve 23. The latter is extended, at its lower part, by a pinion 26, mounted in a housing 27 and meshing with an endless screw (not shown) mounted on a shaft 28 extending orthogonally to the pinion 26 and comprising, at its free end, an operating wheel 29. The spindle 22 is free in translation along its longitudinal axis in the sheath 23 and is linked in rotation to it. It comprises, on the side of its upper part, a rectangular diametrical lumen with rounded edges 22a, in which is disposed a pin 30 extending transversely and force-fitted into reserved holes in the wall of the sheath 23. The sheath is threaded at its lower periphery and cooperates with the internal thread 26a of the pinion 26. When the locking screw 25 is loosened, it is understood that by operating the flywheel 29 in one direction or the other, the displacement is caused in the vertical direction, towards the top or bottom of the sheath 23 and of the spindle 22. When the desired position has been reached, the assembly is immobilized by the locking screw 25.

Les figures 6 et 7 illustrent le boîtier-support-de-lentille . 17 dans deux formes de réalisation. Le boîtier de la figure 6 est destiné à recevoir la partie convexe de la lentille à surfacer; le boîtier de la figure 7, la partie concave de ladite lentille.Figures 6 and 7 illustrate the lens-support-housing. 17 in two embodiments. The housing of Figure 6 is intended to receive the convex part of the lens to be surfaced; the housing of Figure 7, the concave portion of said lens.

Le boîtier 17 se présente sous une forme générale cylindrique et la surface porteuse 171/172 de la lentille s'étend orthogonalement à son axe longitudinal. La surface 171 du boîtier de la figure 6 est concave d'une forme générale sphérique et comporte, à sa périphérie, un rebord 171a pour que 1a lentille puisse être maintenue latéralement pendant l'opération de surfaçage. La surface 172 du boîtier de la figure 7 est convexe d'une forme générale sphérique et comporte à sa périphérie, un rebord 172a chanfreiné pour maintenir latéralement la lentille pendant l'opération de surfaçage.The housing 17 is in a generally cylindrical shape and the carrier surface 17 1/17 2 of the lens extends orthogonally to its longitudinal axis. The surface 17 1 of the housing of FIG. 6 is concave of a generally spherical shape and comprises, at its periphery, a flange 17 1 a so that the lens can be held laterally during the surfacing operation. The surface 17 2 of the housing of Figure 7 is convex of a generally spherical shape and has at its periphery, a flange 17 2 has chamfered to laterally hold the lens during the surfacing operation.

Les surfaces courbes 171/172 sont recouvertes par un revêtement de surface 173, constitué par un agglomérat de liège et de caoutchouc,. lequel revêtement comporte par exemple des perforations 173a réparties parallèlement à sa périphérie et une perforation réservée en son centre 173b. Ces perforations forment, lorsque le revêtement est fixé, par exemple par collage, sur lesdites surfaces courbes, des trous borgnes contenant de l'air, ce qui a pour effet d'éviter l'adhérence des lentilles pendant le polissage en vue de faciliter leur retrait au terme de l'opération de surfaçage.The curved surfaces 17 1/17 2 are covered by a surface coating 17 3, consisting of cork and rubber agglomerate ,. which covering comprises for example perforations 17 3 a distributed parallel to its periphery and a reserved perforation in its center 17 3 b. These perforations form, when the coating is fixed, for example by gluing, on said curved surfaces, blind holes containing air, which has the effect of avoiding the adhesion of the lenses during polishing in order to facilitate their withdrawal at end of the surfacing operation.

Le boîter se prolonge vers le bas par une partie enveloppante constituée par une jupe de forme générale cylindrique 17a, comportant une partie conique 17b qui rejoint la partie supérieure qui comporte la surface d'appui 171/172. La partie 17a comporte un rebord 17c s'étendant vers l'intérieur du boîtier, lequel rebord est dans un plan perpendiculaire à l'axe longitudinal du boîtier et délimite une ouverture circulaire 17d et donc est parallèle à la partie supérieure qui comporte les surfaces d'appui 171/172.The limping extends downwardly from a surrounding portion made by the general shape of cylindrical skirt 17a, having a conical portion 17b which joins the upper part which comprises the bearing surface 17 1/17 2. Part 17a has a rim 17c extending towards the inside of the housing, which rim is in a plane perpendicular to the longitudinal axis of the housing and delimits a circular opening 17d and therefore is parallel to the upper part which has the surfaces d 'platen 17 1/17 2.

Le boîtier comporte encore, au-dessous de la surface d'appui 171/172 et coaxialement à celle-ci et à l'ouverture 17d, un logement conique 17e dont les génératrices de sa paroi convergent en un point situé au-delà de la surface d'appui 171/172 et sur l'axe longitudinal du boîtier. Le fond de ce logement forme une cuvette 17f d'une conicité plus prononcée que celle de sarparoi laterale.The housing further includes, below the bearing surface 17 1/17 2 and coaxially thereto and to the opening 17d, a tapered seat 17, the generatrices of the wall converge at a point located beyond the surface of platen 17 1/17 2 and on the longitudinal axis of the housing. The bottom of this housing forms a bowl 17f of a more pronounced taper than that of lateral sarparoi.

On se reporte maintenant à la figure 5 du dessin qui illustre le boîtier 17 représenté à la figure 6, porté par la broche 22, montée dans le fourreau 23.Referring now to FIG. 5 of the drawing which illustrates the housing 17 represented in FIG. 6, carried by the pin 22, mounted in the sheath 23.

La broche 22 comporte,à sa partie supérieure, une tête 31 montée à rotation libre, laquelle tête est conique et de même conicité que le logement 17e du boîtier dans lequel elle est engagée. Elle se compose de deux parties : une partie centrale 31a formant une sorte de plateau à sa partie inférieure et une partie conique 31b qui enveloppe ladite partie centrale 31a, laquelle partie 31b est montée à rotation. sur la partie 31a sur un roulement à billes 32, emmanché autour de la partie centrale 31a et dans un logement cylindrique 31d de la partie conique 31b.The pin 22 has, at its upper part, a head 31 mounted for free rotation, which head is conical and of the same conicity as the housing 17e of the housing in which it is engaged. It consists of two parts: a central part 31a forming a sort of tray at its lower part and a conical part 31b which envelops said central part 31a, which part 31b is mounted for rotation. on the part 31a on a ball bearing 32, fitted around the central part 31a and in a cylindrical housing 31d of the conical part 31b.

La partie centrale 31a, qui est fixe, comporte un logement conique 31a1 dont le sommet est dirigé du côté de la partie supérieure de,la tête 31., lequel sommet est réservé dans.une pièce d'usure rapportée 33, en acier au carbure.The central part 31a, which is fixed, comprises a conical housing 31a 1 , the apex of which is directed towards the side of the upper part of, the head 31., which apex is reserved in. A wear part 33, made of steel carbide.

La tête 31 est en appui sur un pivot 34, également réalisé en acier au carbure, lequel se présente sous la forme d'un axe cylindrique dont l'extrémité libre est conique et de même conicité que celle du logement 31al et de la pièce rapportée 33. Le pivot'34 est monté sur un embout cylindrique 35 comportant un prolongement coaxial cylindrique et fileté, vissé dans un trou taraudé 22b, réservé au centre et à la partie supérieure de la broche 22. Une coupelle 36, de forme cylindro-conique et s'étendant vers le bas, enveloppe la partie supérieure du fourreau 23 qui forme à cet endroit un bossage cylindrique 23e. Le fourreau comporte, au niveau du bossage 23e, un logement annulaire 23f dans lequel est disposé un joint d'étanchéité à lèvre 37, dont la lèvre s'appuie autour de la broche 22.The head 31 is supported on a pivot 34, also made of carbide steel, which is in the form of a cylindrical axis whose free end is conical and of the same conicity as that of the housing 31a l and of the part reported 33. The pivot 34 is mounted on a cylindrical end piece 35 comprising a cylindrical and threaded coaxial extension, screwed into a tapped hole 22b, reserved for the center and the upper part of the spindle 22. A cup 36, of cylindrical form conical and extending downward, envelops the upper part of the sheath 23 which forms a cylindrical boss 23e at this point. The sheath comprises, at the level of the boss 23e, an annular housing 23f in which is disposed a lip seal 37, the lip of which rests around the pin 22.

Le diamètre de l'ouverture circulaire 17d est inférieur au diamètre (2 R) de la partie évasée formant les portées 23d et supérieur à sa largeur e. Cette disposition est nécessaire pour permettre la mise en place du boîtier 17 sur la tête 31 et son enlèvement.The diameter of the circular opening 17d is less than the diameter (2 R) of the flared part forming the bearing surfaces 23d and greater than its width e. This provision is necessary to allow the establishment of the housing 17 on the head 31 and its removal.

Pour réaliser ces deux opérations, la broche 22 est mise dans la position représentée à la figure 5, le boîtier est mis dans une position inclinée, de telle sorte qu'une des portées 23d est passée à travers l'ouverture 17d. Le boîtier est ensuite mis dans une position sensiblement horizontale et est déplacé du côté de la portée opposée pour faire passer cette dernière à travers l'ouverture 17d; simultanément à ces deux opérations, la tête 31 est engagée dans le logement conique 17e.To carry out these two operations, the spindle 22 is placed in the position shown in FIG. 5, the housing is placed in an inclined position, so that one of the bearing surfaces 23d is passed through the opening 17d. The housing is then placed in a substantially horizontal position and is moved to the side of the opposite staff to pass the latter through the opening 17d; simultaneously with these two operations, the head 31 is engaged in the conical housing 17th.

Dans la position de la figure 5, le boîtier est en position pour effectuer le surfaçage des lentilles. Le rebord 17c étant éloigné des deux portées 23d, il peut osciller autour du pivot 34 tout en étant entraîné en rotation autour du roulement 32 sous l'effet de la tête oscillante porte-outil 2, dont l'outil 8 attaque la lentille dans une position dite "en bandeau", c'est-à-dire du côté de la périphérie de la lentille.In the position of Figure 5, the housing is in position to perform the surfacing of the lenses. The rim 17c being distant from the two bearing surfaces 23d, it can oscillate around the pivot 34 while being driven in rotation around the bearing 32 under the effect of the tool-holder oscillating head 2, the tool 8 of which attacks the lens in a so-called "strip" position, that is to say on the side of the periphery of the lens.

Pour déposer la lentille sur le boîtier ou la retirer de celui-ci, et dans le but d'immobiliser le boîtier dans une position horizontale parfaitement définie, du fait que ces opérations sont effectuées mécaniquement.par des bras dont il sera question plus loin, le boîtier 17 est poussé du côté de la tête oscillante 2, sous l'effet du vérin 24, qui porte la broche 22 jusqu'à ce que le rebord 17c du boîtier vienne en appui sur les portée 23d du fourreau 23, tel que cela est illustré à la figure 3 du dessin. Dans cette position, la partie du boîtier 171/172 qui reçoit les lentilles est immobilisée dans un plan horizontal.To deposit the lens on the housing or remove it therefrom, and in order to immobilize the housing in a perfectly defined horizontal position, since these operations are carried out mechanically by arms which will be discussed later, the housing 17 is pushed towards the side of the oscillating head 2, under the effect of the jack 24, which carries the pin 22 until the rim 17c of the housing comes to bear on the surfaces 23d of the sheath 23, such as that is illustrated in Figure 3 of the drawing. In this position, the portion of housing 17 1/17 2 which receives the lenses is fixed in a horizontal plane.

On se reporte maintenant à la figure 11 du dessin qui illustre schématiquement une machine comportant une unité de surfaçage des lentilles.Referring now to Figure 11 of the drawing which schematically illustrates a machine comprising a lens surfacing unit.

Une telle machine se compose de trois postes :

  • A - poste de traitement de surface,
  • B - poste d'approvisionnement en lentilles,
  • C - poste d'évacuation des lentilles usinées sur une face.
Such a machine consists of three stations:
  • A - surface treatment station,
  • B - lens supply station,
  • C - lens removal station machined on one side.

Les postes A et B/C sont situés sur deux axes orthogonaux XX1/YY1 qui se croisent en un point 0. Le poste A est situé en face de l'opérateur et comporte le boîtier-support-de-lentille 17 au-dessus duquel se trouve la tête oscillante porte-outil 2. Le poste B et le poste C sont sur la même ligne YY1. Le poste B est situé à droite du poste A, le poste C à gauche.Stations A and B / C are located on two orthogonal axes XX 1 / YY 1 which intersect at a point 0. Station A is located in front of the operator and includes the lens-support-housing 17 au- above which is the tool holder oscillating head 2. Station B and station C are on the same line YY 1 . Station B is located to the right of station A, station C on the left.

Le poste B d'approvisionnement des lentilles comporte un chargeur vertical 38 se présentant sous la forme d'un corps cylindrique creux dans lequel sont empilées les lentilles au-dessus d'un poussoir.The lens supply station B comprises a vertical loader 38 in the form of a hollow cylindrical body in which the lenses are stacked above a pusher.

Le poste C d'évacuation des lentilles usinées est constitué par un convoyeur 39 dont le brin porteur du tapis 39a se déplace dans le sens de la flèche F.The station C for evacuating the machined lenses consists of a conveyor 39, the carrying strand of the mat 39a moves in the direction of the arrow F.

L'extrémité 39b du convoyeur, le poste A et le poste B sont situés sur une circonférence 40 de rayon RI.The end 39b of the conveyor, station A and station B are located on a circumference 40 of radius R I.

La machine comporte également un ensemble de deux bras 41/42, montés pivotants autour d'un axe situé sur le point 0 de croisement des lignes XX1/YY1. Les bras 41/42 sont, dans un même plan horizontal, et sont reliés l'un à l'autre par une partie 43. Ils comportent chacun une partie 41a/42a, lesquelles parties divergent à partir du point 0 et une partie 41b/42b qui est parallèle à la ligne XXI, lorsque les bras sont dans leur position initiale de repos, tel que représenté à la figure 11. Chacun des bras porte,à son extrémité libre, une ventouse 44/45. Ces ventouses sont situées à l'intersection des bissectrices des angles des lignes orthogonales XX1/YY1 et de la circonférence 40 sur laquelle se déplacent les ventouses. Ainsi, au repos, la ventouse 44 est située à l'intersection 46 de la circonférence 40 et de la ligné bissectrice OI de l'angle AOC, et la ventouse 45 est située à l'intersection 47 de la ligne bissectrice OJ de l'angle AOB. Les lignes OI/OJ forment un angle droit.The machine also includes a set of two arms 41/42, pivotally mounted around an axis located at the point 0 of crossing lines XX 1 / YY 1 . The arms 41/42 are, in the same horizontal plane, and are connected to each other by a part 43. They each have a part 41a / 42a, which parts diverge from point 0 and a part 41b / 42b which is parallel to the line XX I , when the arms are in their initial rest position, as shown in FIG. 11. Each of the arms carries, at its free end, a suction cup 44/45. These suction cups are located at the intersection of the bisectors of the angles of the orthogonal lines XX 1 / YY 1 and of the circumference 40 on which the suction cups move. Thus, at rest, the suction cup 44 is located at the intersection 46 of the circumference 40 and the bisecting line OI of the angle AOC, and the suction cup 45 is located at the intersection 47 of the bisecting line OJ of the AOB angle. The OI / OJ lines form a right angle.

Dans chacune des ventouses 44/45 aboutit une conduite d'air comprimé 48 et une conduite d'air en dépression 49. Ces conduites sont fixées aux bras et sont reliées par des flexibles à unè pompe à vide pour la conduite 49 et à un compresseur d'air pour la conduite 48.In each of the suction cups 44/45 there ends a compressed air line 48 and a vacuum air line 49. These lines are fixed to the arms and are connected by hoses to a vacuum pump for the line 49 and to a compressor. of air for the pipe 48.

Le fonctionnement de l'unité représenté à la figure 11 est le suivant :The operation of the unit shown in Figure 11 is as follows:

Au démarrage :

  • la tête oscillante porte-outil 2 est dégagée du boîtier-support-de-lentille 17.
    • a)- Les bras 41/42 pivotent de 45° dans le sens de la flèche F1, la ventouse 44 s'immobilise au-dessus du boîtier 17, la ventouse 45 au-dessus du chargeur tubulaire 38.
    • b)- Translation des bras vers le bas, simultanément l'organe poussoir du chargeur 38 pousse la colonne pour mettre la lentille supérieure au contact de la ventouse 45 du bras 42.
    • c)- La ventouse 45 aspire la lentille sous l'effet de la pompe à vide.
    • d)- Translation des bras vers le haut, le bras 42 portant la lentille.
    • e)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 45 s'immobilise au-dessus du boîtier 17.
    • f)- Translation des bras vers le bas pour déposer la lentille sur le boîtier 17 avec jet d'air comprimé sur la lentille pour la plaquer sur le boîtier support de lentille 17 et translation des bras vers le haut.
    • g)- Pivotement des bras de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des points 46/47.
    • h)- Descente de la tête oscillante porte-outil 2 sur la len- 'tille portée par le boîtier 17 pour réaliser le surfaçage sur une face.
While booting :
  • the tool-holder oscillating head 2 is released from the lens-support-housing 17.
    • a) - The arms 41/42 pivot by 45 ° in the direction of the arrow F1, the suction cup 44 stops above the housing 17, the suction cup 45 above the tubular loader 38.
    • b) - Translation of the arms downward, simultaneously the pusher member of the loader 38 pushes the column to bring the upper lens into contact with the suction cup 45 of the arm 42.
    • c) - The suction cup 45 sucks the lens under the effect of the vacuum pump.
    • d) - Translation of the arms upwards, the arm 42 carrying the lens.
    • e) - Pivoting the arms 90 ° in the direction of the arrow F 2 , the suction cup 45 comes to rest above the housing 17.
    • f) - Translation of the arms downward to deposit the lens on the housing 17 with jet of compressed air on the lens to press it onto the lens support housing 17 and translation of the arms upwards.
    • g) - Pivoting of the arms by 45 ° to immobilize the suction cups 44/45 in their initial position above the points 46/47.
    • h) - Lowering of the oscillating head of the tool holder 2 on the lens carried by the housing 17 to carry out surfacing on one face.

Pendant les opérations b à g, ci-dessus effectuées par le bras 42 :

  • b)- Translation des bras vers le bas, la ventouse 44, portée par le bras 41, vient au contact de la lentille façonnée précédemment.
  • c)- La ventouse 44 aspire la lentille façonnée.
  • d)- Translation des bras vers le haut, le bras 41 portant la lentille.
  • e)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 44 s'immobilise au-dessus de l'extrémité 39b du convoyeur 39.
  • f)- Translation des bras vers le bas, le bras 41 se rapproche du tapis du convoyeur, et jet d'air comprimé pour faire tomber la lentille sur le tapis 39a. Evacuation des lentilles dans le sens de la Flèche F vers un bac de stockage.
  • g)- Translation des bras vers le haut et pivotement des bras de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des points 46/47;

et le cycle se poursuit autant de fois qu'il y a de lentilles dans le chargeur tubulaire 38.During operations b to g, above carried out by arm 42:
  • b) - Translation of the arms downwards, the suction cup 44, carried by the arm 41, comes into contact with the lens previously shaped.
  • c) - The suction cup 44 sucks the shaped lens.
  • d) - Translation of the arms upwards, the arm 41 carrying the lens.
  • e) - Pivoting of the arms by 90 ° in the direction of arrow F 2 , the suction cup 44 comes to rest above the end 39b of the conveyor 39.
  • f) - Translation of the arms downwards, the arm 41 moves closer to the conveyor belt, and jet of compressed air to cause the lens to fall onto the carpet 39a. Evacuation of the lenses in the direction of arrow F towards a storage tank.
  • g) - Translation of the arms upwards and pivoting of the arms by 45 ° to immobilize the suction cups 44/45 in their initial position above points 46/47;

and the cycle continues as many times as there are lenses in the tubular magazine 38.

Les lentilles dont le surfaçage a été fait sur une face sont disposées dans un chargeur 38 pour réaliser le surfaçage de l'autre face non encore usinées en effectuant les mêmes opérations que celles qui viennent d'être décrites en référence aux lettres a à h.The lenses whose surfacing was done on one side are placed in a loader 38 to perform the surfacing of the other side not yet machined by performing the same operations as those which have just been described with reference to the letters a to h.

La figure 12 représente schématiquement une machine comportant deux unités de traitement de surfaces des lentilles pour usiner ces dernières sur les deux faces.FIG. 12 schematically represents a machine comprising two lens surface treatment units for machining the latter on the two faces.

Les deux unités I/II sont juxtaposées.The two units I / II are juxtaposed.

L'unité I comporte trois postes A,B,C.Unit I has three stations A, B, C.

A - Poste de traitement de surface;A - Surface treatment station;

B - Poste d'approvisionnement des lentilles.B - Lens supply station.

C - Poste de transfert des lentilles usinées sur une face vers l'unité II.C - Transfer station for lenses machined on one side to unit II.

Les postes A et B/C sont situés sur deux axes orthogonaux XX1/YY1 qui se croisent en un point 0.Stations A and B / C are located on two orthogonal axes XX 1 / YY 1 which intersect at a point 0.

L'unité II comporte également trois postes A1, B1, C1.Unit II also includes three stations A 1 , B 1 , C 1 .

A1 - Poste de traitement de surface.A 1 - Surface treatment station.

B1 - Poste relais des lentilles provenant de l'unité IB 1 - Relay station for lenses from unit I

C1 - Poste d'évacuation des lentilles usinées sur les deux faces.C 1 - Station for removing lenses machined on both sides.

Les postes A1 et B1/C1 sont situés sur deux axes orthogonaux ZZ1/YY1 qui se croisent en un point 01.Stations A 1 and B 1 / C 1 are located on two orthogonal axes ZZ 1 / YY 1 which intersect at a point 0 1 .

Les postes B, C, B1,C1 sont alignés sur l'axe YY1.Positions B, C, B 1 , C 1 are aligned on the YY 1 axis.

Entre les deux unités I II est monté à pivotement,autour d'un axe 50, un dispositif de transfert 51 encore appelé organe de retournement et comportant un récepteur de lentilles 51a porté par un bras 51b. L'axe de pivotement 50 est 'situé sur l'axe YY1 au milieu de la distance qui sépare les postes B1 et C. Le récepteur de lentilles 51a décrit une circonférence 52 pour faire passer les lentilles du poste C au pos- te B1-.Between the two units I II is pivotally mounted, around an axis 50, a transfer device 51 also called a reversal member and comprising a lens receiver 51a carried by an arm 51b. The pivot axis 50 is' on axis YY 1 in the middle of the distance between positions B and 1 C. The lenses 51a of receiver 52 describes a circumference for passing the lenses of the position C to the position B 1 -.

Les bras 41/42 des deux unités I II sont dans un même plan horizontal et sont identiques et agencés de la même façon que sur la machine décrite en référence de la figure 11 précédemment décrite. Comme sur cette machine, au poste A de l'unité I, se trouve un boîtier .17 surmonté d'une tête oscillante perte-outil 2; au poste B se trouve un chargeur de lentilles 38, identique à celui qui a été précédemment décrit.The arms 41/42 of the two units I II are in the same horizontal plane and are identical and arranged in the same way as on the machine described with reference to FIG. 11 previously described. As on this machine, at station A of unit I, there is a box .17 surmounted by an oscillating head loss tool 2; at station B is a lens loader 38, identical to that which has been previously described.

De même et comme sur la machine de la figure 11, au poste A1 de l'unité II, se trouve un boîtier 17 surmonté d'une tête oscillante porte-outil 2; au poste CI se trouve un convoyeur 39 identique à celui précédemment décrit.Similarly and as on the machine of FIG. 11, at station A 1 of unit II, there is a housing 17 surmounted by an oscillating head carrying tool 2; at the station CI is a conveyor 39 identical to that previously described.

L'unité II comporte au poste B1 un support-relais 53, comportant un réceptacle circulaire creux 53a, recouvert d'un revêtement de surface en matière synthétique souple, par exemple en polyuréthane et dans lequel réceptacle, les lentilles venant d'être traitées sur une face sont déposées par l'organe de retournement 51. Au centre du réceptacle 53a est réservé un orifice par lequel est délivré un jet d'eau pour laver la face de la lentille précédemment usinée.Unit II comprises at station B 1 a relay support 53, comprising a hollow circular receptacle 53a, covered with a surface coating of flexible synthetic material, for example polyurethane and in which receptacle, the lenses having just been treated on one side are deposited by the turning member 51. At the center of the receptacle 53a is reserved an orifice through which a jet of water is delivered to wash the face of the lens previously machined.

L'organe de retournement 51 pivote autour de l'axe 50, sous l'effet d'un vérin à double effet (non représenté) dont la tige mobile porte une crémaillère qui engrène avec un pignon calé sur ledit axe 50.The turning member 51 pivots around the axis 50, under the effect of a double-acting cylinder (not shown), the movable rod of which carries a rack which meshes with a pinion wedged on said axis 50.

Pendant le pivotement de 180° de l'organe 51 du poste C au poste B1 (ou inversement) le bras 51b, qui porte le récepteur de lentilles 51a, tourne sur lui-même de 180°, de telle sorte que la lentille déposée sur le récepteur 51a au poste C est retournée et déposée sur le support relais 53 du poste B1.During the 180 ° pivoting of the member 51 from station C to station B 1 (or vice versa) the arm 51b, which carries the lens receiver 51a, rotates on itself by 180 °, so that the lens deposited on the receiver 51a at station C is returned and deposited on the relay support 53 of station B 1 .

Ledit récepteur 51a se présente sous la forme d'un boîtier de forme circulaire d'un diamètre légèrement supérieur à celui des lentilles et dont le fond est recouvert d'un revêtement de surface, par exemple en polyuréthane.Said receiver 51a is in the form of a circular-shaped casing with a diameter slightly greater than that of the lenses and the bottom of which is covered with a surface coating, for example made of polyurethane.

L'entraînement en rotation du bras 51b sur lui-même pendant le pivotement de 180° de L'organe de retournement est obtenu au moyen d'un couple conique dont un pignon est calé en bout du bras 51b et l'autre en bout de l'axe 50.The rotation drive of the arm 51b on itself during the 180 ° pivoting of the turning member is obtained by means of a conical couple of which one pinion is wedged at the end of the arm 51b and the other at the end of axis 50.

Le fonctionnement de la machine comportant deux unités est le suivant :

  • Au démarrage, les têtes oscillantes 2 des unités I et'II sont dégagées des boîtiers-porte-lentilles 17.
The operation of the machine comprising two units is as follows:
  • At start-up, the oscillating heads 2 of the units I and 'II are released from the lens-holder housings 17.

Sur l'unité I :

  • a)- Les bras 41/42 pivotent de 45° dans le sens de la flèche F1, la ventouse 44 s'immobilise au-dessus du boîtier 17, la ventouse 45 au-dessus du chargeur tubulaire 38.
  • b)- Translation des bras vers le bas, simultanément l'organe poussoir du chargeur 38 pousse la colonne pour mettre la lentille supérieure au contact de la ventouse 45 du bras 42.
  • c)- La ventouse 45 aspire la lentille sous l'effet de la pompe à vide.
  • d)- Translation des bras vers le haut, le bras 42 portant la lentille.
  • e)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 45 s'immobilise au-dessus du boîtier 17.
  • f)- Translation des bras vers le bas pour déposer la lentille sur le boîtier 17 avec jet d'air comprimé sur la lentille pour la plaquer sur le boîtier support de lentille 17 et translation des bras vers le haut.
  • g)- Pivotement des bras de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des points 46/47.
  • h)- Descente de la tête oscillante porte-outil 2 sur la lentille portée par le boîtier 17 pour réaliser le surfaçage sur une face.
On unit I:
  • a) - The arms 41/42 pivot by 45 ° in the direction of the arrow F 1 , the suction cup 44 stops above the housing 17, the suction cup 45 above the tubular loader 38.
  • b) - Translation of the arms downward, simultaneously the organ loader push-button 38 pushes the column to bring the upper lens into contact with the suction cup 45 of the arm 42.
  • c) - The suction cup 45 sucks the lens under the effect of the vacuum pump.
  • d) - Translation of the arms upwards, the arm 42 carrying the lens.
  • e) - Pivoting the arms 90 ° in the direction of the arrow F 2 , the suction cup 45 comes to rest above the housing 17.
  • f) - Translation of the arms downward to deposit the lens on the housing 17 with jet of compressed air on the lens to press it onto the lens support housing 17 and translation of the arms upwards.
  • g) - Pivoting of the arms by 45 ° to immobilize the suction cups 44/45 in their initial position above the points 46/47.
  • h) - Lowering of the tool-holder oscillating head 2 on the lens carried by the housing 17 to carry out surfacing on one face.

Pendant les opérations b à g effectuées par le bras 42 :

  • b)- Translation vers le bas des bras, la ventouse 44, portée par le bras 41 vient au contact de la lentille façonnée précédemment.
  • c)- La ventouse 44 aspire la lentille façonnée.
  • d)- Translation des bras vers le haut, le bras 41 portant la lentille.
  • d)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 44 s'immobilise au-dessus du récepteur de lentille 51a.
  • f)- Translation des bras vers le bas, le bras 41 se rapproche du récepteur de lentille 51a et jet d'air pour faire tomber la lentille dans le récepteur..
  • g)- Translation des bras vers le haut et pivotement de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des.points 46/47.
During operations b to g carried out by arm 42:
  • b) - Translation down the arms, the suction cup 44, carried by the arm 41 comes into contact with the previously shaped lens.
  • c) - The suction cup 44 sucks the shaped lens.
  • d) - Translation of the arms upwards, the arm 41 carrying the lens.
  • d) - Pivoting the arms 90 ° in the direction of arrow F 2 , the suction cup 44 comes to rest above the lens receiver 51a.
  • f) - Translation of the arms downwards, the arm 41 moves closer to the lens receiver 51a and air jet to cause the lens to fall into the receiver.
  • g) - Translation of the arms upwards and pivoting by 45 ° to immobilize the suction cups 44/45 in their initial position above the points 46/47.

Pendant le surfaçage de la lentille au poste A :

  • - Pivotement de 180° du bras de retournement 51b pour mettre la lentille façonnée sur une face, dans la position de reprise, sur le support-relais 53, en vue du surfaçage dé la deuxième face.
  • - Pendant les opérations a à h se déroulant sur l'unité I, les opérations sur l'unité II sont les suivantes :
    • a)- Les bras 41/42 pivotent de 45° dans le sens de la flèche Fi, la ventouse 44 s'immobilise au-dessus du boîtier 17, la ventouse 45 au-dessus du support relais 53.
    • b)- Translation des bras vers le bas.
    • c)- La ventouse 45 aspire la lentille sous l'effet de la pompe à vide.
    • d)- Translation des bras vers le haut, le bras 42 portant la lentille.
    • e)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 45 s'immobilise au-dessus du boîtier 17.
    • f)- Translation des bras vers le bas pour déposer la lentille sur le boîtier 17 avec jet d'air comprimé sur la lentille pour la plaquer sur le boîtier-support-de-lentille 17 et translation des bras vers le haut.
    • g)- Pivotement des bras de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des points 46/47.
    • h)- Descente de la tête oscillante porte-outil 2 sur la lentille portée par le boîtier 17 pour usiner la deuxième face de la lentille.
While the lens is facing at station A:
  • - 180 ° pivoting of the turning arm 51b to put the shaped lens on one side, in the recovery position, on the relay support 53, for surfacing of the second side.
  • - During operations a to h taking place on unit I, operations on unit II are as follows:
    • a) - The arms 41/42 pivot by 45 ° in the direction of the arrow Fi, the suction cup 44 stops above the housing 17, the suction cup 45 above the relay support 53.
    • b) - Translation of the arms down.
    • c) - The suction cup 45 sucks the lens under the effect of the vacuum pump.
    • d) - Translation of the arms upwards, the arm 42 carrying the lens.
    • e) - Pivoting the arms 90 ° in the direction of the arrow F 2 , the suction cup 45 comes to rest above the housing 17.
    • f) - Translation of the arms downward to deposit the lens on the housing 17 with jet of compressed air on the lens to press it onto the lens-support-housing 17 and translation of the arms upward.
    • g) - Pivoting of the arms by 45 ° to immobilize the suction cups 44/45 in their initial position above the points 46/47.
    • h) - Lowering of the oscillating head tool holder 2 on the lens carried by the housing 17 to machine the second face of the lens.

Pendant les opérations b à g effectuées par le bras 42 :

  • b)- Translation vers le bas des bras, la ventouse 44, portée par le bras 41, vient au contact de la lentille précédemment façonnée.
  • c)- La ventouse 44 aspire la lentille façonnée sur les deux faces.
  • d)- Translation des bras vers le haut, le bras 41 portant la lentille.
  • e)- Pivotement des bras de 90° dans le sens de la flèche F2, la ventouse 44 s'immobilise au-dessus de l'extrémité 39b du convoyeur 39.
  • f)- Translation des bras vers le bas, le bras 41 se rapproche du tapis du convoyeur et jet d'air comprimé pour faire tomber la lentille sur le tapis 39a. Evacuation des lentilles traitées sur les deux faces dans le sens de la flèche F vers un bac de stockage.
  • g)- Translation des bras vers le haut et pivotement des bras de 45° pour immobiliser les ventouses 44/45 à leur position initiale au-dessus des points 46/47.

Et le cycle se poursuit en synchronisme sur les unités.I et II.During operations b to g carried out by arm 42:
  • b) - Translation down the arms, the suction cup 44, carried by the arm 41, comes into contact with the previously shaped lens.
  • c) - The suction cup 44 sucks the shaped lens on both sides.
  • d) - Translation of the arms upwards, the arm 41 carrying the lens.
  • e) - Pivoting of the arms by 90 ° in the direction of arrow F 2 , the suction cup 44 comes to rest above the end 39b of the conveyor 39.
  • f) - Translation of the arms downwards, the arm 41 approaches the conveyor belt and compressed air jet to cause the lens to fall onto the belt 39a. Evacuation of the lenses treated on both sides in the direction of arrow F to a storage tank.
  • g) - Translation of the arms upwards and pivoting of the arms by 45 ° to immobilize the suction cups 44/45 in their initial position above the points 46/47.

And the cycle continues in synchronism on units I and II.

Les opérations de surfaçage se déroulant au poste A, A1 et le transfert des lentilles par l'organe de retournement 51 et par le convoyeur 39 se produisent en même temps.The surfacing operations taking place at station A, A 1 and the transfer of the lenses by the turning member 51 and by the conveyor 39 occur at the same time.

Claims (12)

1. Machine doucisseuse ou polisseuse pour lentilles optiques comportant un bâti (1), sur lequel est monté au moins une broche (32) destinée à porter un outil à doucir ou à polir (8), au moins un boîtier-support-de-lentille (17), des moyens pour délivrer un agent de polissage entre l'outil (8) et le boîtier (17), des moyens pour mettre les lentilles au contact de l'outil à doucir ou à polir (8), des moyens pour mettre les lentilles sur le boîtier-support (17) et pour enlever les lentilles après qu'elles aient été doucies ou polies, dont le boîtier-support-de-lentille (17) est monté a rotation libre sur ledit bâti (1), lequel comporte une tête mobile oscillante (2) sur laquelle la broche porte-outil (32) est entraînée en rotation au-dessus dudit boîtier-support-de-lentille (17), caractérisé en ce que le boîtier-support-de-lentille (17) est porté par une broche (22), déplaçable verticalement, laquelle est montée dans un fourreau (23), évasé à sa partie supérieure pour former deux portées (23d) s'étendant horizontalement et en opposition de part et d'autre de la broche (22) et en ce que le boîtier (17) comporte une jupe (17a), le prolongeant vers le bas et comportant'un rebord (17c) s'étendant vers le centre du boîtier pour envelopper la partie du fourreau qui comporte lesdites portées (23d), lequel boîtier (17) est en appui sur une tête (31) montée à rotation libre sur un pivot fixe (34), situé à la partie supérieure de ladite broche (22), de telle sorte que lorsque la broche (22) est déplacée vers le haut, le boîtier. (17) venant en appui sur lesdites portées (23d) est immobilisé dans une position horizontale pour y déposer les lentilles en vue de leur surfaçage ou pour les enlever après qu'elles aient été traitées et que lorsque la broche (22) est déplacée vers le bas, le boîtier (17) éloigne desdites portées (23d),peut osciller librement pendant le surfaçage des lentilles sous l'effet de la tête mobile oscillante (2).1. Softening or polishing machine for optical lenses comprising a frame (1), on which is mounted at least one spindle (3 2 ) intended to carry a tool to be softened or polished (8), at least one housing-support-of -lens (17), means for delivering a polishing agent between the tool (8) and the housing (17), means for bringing the lenses into contact with the tool to be softened or polished (8), means for putting the lenses on the support-housing (17) and for removing the lenses after they have been smoothed or polished, the lens-support-housing (17) of which is mounted for free rotation on said frame (1 ), which comprises an oscillating mobile head (2) on which the tool-holder spindle (3 2 ) is rotated above said lens-support-housing (17), characterized in that the support-housing de-lens (17) is carried by a pin (22), movable vertically, which is mounted in a sheath (23), flared at its upper part to form two ports ées (23d) extending horizontally and in opposition on either side of the spindle (22) and in that the housing (17) comprises a skirt (17a), extending it downwards and having a flange ( 17c) extending towards the center of the housing to envelop the part of the sheath which comprises said bearing surfaces (23d), which housing (17) is supported on a head (31) mounted to rotate freely on a fixed pivot (34), located at the upper part of said pin (22), so that when the pin (22) is moved upwards, the housing. (17) coming to bear on said bearing surfaces (23d) is immobilized in a horizontal position in order to deposit the lenses there in order to surface them or to remove them after they have been treated and only when the spindle (22) is moved towards the bottom, the housing (17) moves away from said bearing surfaces (23d), can oscillate freely during the surfacing of the lenses under the effect of the oscillating moving head (2). 2. Machine selon la revendication 1, caractérisée en ce que la tête (31) est d'une forme générale tronconique, dont les génératrices convergent en un point situé sur son axe de rotation et au-delà de sa partie supérieure, et se compose de deux parties : une partie centrale fixe (31a) comportant en son centre un logement conique (31a1) dont le sommet est dirigé du côté de la partie supérieure de la tête, sur lequel sommet s'appuie ledit pivot (34) et une partie (31b) enveloppant ladite partie centrale (31a) laquelle partie enveloppante (31b) est montée à rotation libre sur ladite partie fixe, sur une cage à billes ou à rouleaux (32).2. Machine according to claim 1, characterized in that the head (31) is of a generally frustoconical shape, the generators of which converge at a point situated on its axis of rotation and beyond its upper part, and is composed of two parts: a fixed central part (31a) comprising in its center a conical housing (31a 1 ) the apex of which is directed towards the side of the upper part of the head, on which apex rests said pivot (34) and a part (31b) enveloping said central part (31a) which enveloping part (31 b ) is mounted to rotate freely on said fixed part, on a ball or roller cage (32). 3. Machine selon l'une quelconque des revendications 1 et 2, caractérisé en ce que le boîtier (17) comporte, en son centre et du côté de sa partie supérieure, un logement conique (17e) de même conicité que celle de la tête (31), de telle sorte que le boîter se centre sur la tête delà broche (22).3. Machine according to any one of claims 1 and 2, characterized in that the housing (17) comprises, in its center and on the side of its upper part, a conical housing (17e) of the same conicity as that of the head (31), so that the case is centered on the head of the spindle (22). 4. Machine selon l'une quelconque des revendications 1 et 3, dont le boîtier (17) comporte, à sa partie supérieure une surface plane ou une surface concave ou convexe d'une forme générale sphérique (171/172), sur laquelle surface est posée la lentille à doucir ou à polir, caractérisée en ce que ladite surface (171/172) est délimitée par un rebord (171a/172a) pour maintenir la lentille au cours du surfaçage, laquelle surface est recouverte par un revêtement (173) constitué par un agglomérat de liège et de caoutchouc, lequel revêtement(173) comporte des perforations (173a) pour éviter tout effet de ventouse des lentilles et faciliter le retrait des lentilles à la fin du polissage ou du doucissage.4. Machine according to any one of claims 1 and 3, the housing (17) has, at its upper portion a flat surface or a concave or convex surface of general spherical form (17 1/17 2), on which surface is placed the lens doucir or polishing, characterized in that said surface (17 1/17 2) is delimited by a rim (17 1 a / 17 2 a) to hold the lens during surfacing, which surface is covered by a coating (17 3 ) consisting of an agglomerate of cork and rubber, which coating (17 3 ) has perforations (17 3 a) to avoid any suction effect of the lenses and facilitate the removal of the lenses at the end polishing or smoothing. 5. Machine selon l'une quelconque des revendications 1, 3 et 4, caractérisée en ce que le rebord (17c), situé à la partie inférieure du boîtier (17) délimite une ouverture circulaire (17d), lequel rebord est dans un plan perpendiculaire à l'axe de rotation du boîtier et est parallèle à la partie supérieure du boîter (171/172) qui comporte ladite surface plane ou concave ou convexe, d'une forme générale sphérique.5. Machine according to any one of claims 1, 3 and 4, characterized in that the flange (17c), located at the bottom of the housing (17) defines a circular opening (17d), which flange is in a plane perpendicular to the axis of rotation of the housing and is parallel to the upper part of limping (17 1/17 2) having said flat surface or concave or convex, with a generally spherical shape. 6. Machine selon la revendication 1, dont l'outil de polissage ou de doucissage (8) est cylindrique et comporte une face de travail plané ou concave ou convexe d'une forme générale sphérique, caractérisée en ce qu'il est fixé à la partie inférieure et coaxialement à la broche (32) au moyen d'un axe creux (9), fileté à sa partie extérieure pour coopérer avec un taraudage (32a), réservé dans la broche (32), dans lequel axe (9) est monté coulissant un poussoir (91) s'étendant : de la partie inférieure de l'outil jusqu'à la partie supérieure de l'axe et au-delà de cette partie; lequel poussoir est maintenu dans cette position au moyen d'un ressort de compression (91f) en appui sur un épaulement (9f) de l'axe (9), en ce que la broche porte outil (32) est creuse sur sa quasi longueur et comporte une tige (10), fixée à un vérin (11) situé au-dessus.de la partie supérieure de la broche (32), laquelle tige (10) s'étend à l'intérieur de la broche (32), de telle sorte que son extrémité inférieure (10a) se situe, dans sa position initiale de repos, à proximité dudit poussoir (91) et en ce que lors de la mise en pression du vérin (11), la tige (10) venant en appui sur le poussoir (91) entraîne celui-ci en translation dans l'axe creux et fait émerger la partie inférieure du poussoir (91c) à la périphérie de l'outil (8) pour repousser la lentille restée plaquée contre la face extérieure (81/82) de l'outil.6. Machine according to claim 1, in which the polishing or smoothing tool (8) is cylindrical and has a planar or concave or convex working face of a generally spherical shape, characterized in that it is fixed to the lower part and coaxial to the spindle (3 2 ) by means of a hollow pin (9), threaded at its outer part to cooperate with a thread (3 2 a), reserved in the spindle (3 2 ), in which axis (9) is slidably mounted a pusher (9 1 ) extending: from the lower part of the tool to the upper part of the axis and beyond this part; which plunger is held in this position by means of a compression spring (9 1 f) resting on a shoulder (9 f) of the axis (9), in that the tool-holder spindle (3 2 ) is hollow on its almost length and comprises a rod (10), fixed to a jack (11) located above the upper part of the spindle (3 2 ), which rod (10) extends inside the spindle (3 2 ), so that its lower end (10a) is located, in its initial rest position, near said pusher (9 1 ) and in that when the jack (11) is pressurized, the rod (10) coming to bear on the pusher (9 1 ) drives the latter in translation in the hollow axis and causes the lower part of the pusher (9) to emerge 1 c) at the periphery of the tool (8) to push the lens which remains pressed against the external face (8 1/8 2 ) of the tool. 7. Machine selon la revendication 6 dont l'axe fileté (9) comporte, à sa partie inférieure, un tête cylindrique (9b) venant en appui sur un épaulement (8c1) pratiqué dans le fond d'un logement cylindrique (8c) réservé dans l'outil (8), caractérisée en ce que le poussoir (91) se compose d'une tige (91a) comportant à son extrémité inférieure, une proéminence cylindrique (91c), se déplaçant dans une chambre (9e) réservée dans ladite tête cylindrique (9b) de l'axe fileté (9), laquelle proéminence cylindrique (91c) comporte à son extrémité libre un trou borgne (91g) formant des pans latéraux pour recevoir une clé, et entre ledit trou borgne (91g) et ladite tige (9Ia), une lumière (91j) la traversant de part en part et en ce que le poussoir (91) est lié en rotation audit axe fileté (9) au moyen d'une goupille (9Ih) solidaire de l'axe (9) et s'étendant à travers ladite lumière (9Ij) pour permettre le déplacement en translation du poussoir (91) par rapport à l'axe fileté (9).7. Machine according to claim 6, the threaded axis (9) comprises, at its lower part, a cylindrical head (9b) bearing on a shoulder (8c 1 ) formed in the bottom of a cylindrical housing (8c) reserved in the tool (8), characterized in that the pusher (9 1 ) consists of a rod (9 1 a) having at its lower end, a cylindrical prominence (9 1 c), moving in a chamber (9e) reserved in said cylindrical head (9b) of the threaded axis (9), which cylindrical prominence (9 1 c) has at its free end a blind hole (9 1 g) forming side panels for receiving a key, and between said blind hole (9 1 g) and said rod (9 I a), a light (9 1 j) passing right through it and in that the pusher (9 1 ) is linked in rotation to said threaded axis ( 9) by means of a pin (9 I h) integral with the axis (9) and extending through said lumen (9 I j) to allow movement in translation of the pusher (9 1 ) relative to the wire axis summer (9). 8. Machine selon l'une quelconque des revendications 1 à 7, comportant une unité de traitement de surface des lentilles, caractérisée en ce que les moyens pour mettre les lentilles au contact des outils à doucir ou à polir (8) et pour enlever les lentilles après qu'elles aient été doucies ou polies sont deux bras (41/42) situés dans un même plan horizontal et montés à rotation autour d'un même axe vertical 0, lesquels comportent, a leur extrémité libre, une ventouse (44/45) dans laquelle aboutit une conduite d'air sous pression (48) et une conduite d'air en dépression (49), lesquelles ventouses (44/45) se déplacent sur une circonférence (40) sur laquelle se trouve le poste de traitement de surface A comportant le boîtier-support-de-lentilles (17) et la broche porte-outil (32) et un chargeur tubulaire (38) dans lequel sont empilées les lentilles à usiner.8. Machine according to any one of claims 1 to 7, comprising a lens surface treatment unit, characterized in that the means for bringing the lenses into contact with the grinding or polishing tools (8) and for removing the lenses after they have been smoothed or polished are two arms (41/42) situated in the same horizontal plane and mounted for rotation about the same vertical axis 0, which comprise, at their free end, a suction cup (44 / 45) in which leads a pressurized air line (48) and a vacuum air line (49), which suction cups (44/45) move on a circumference (40) on which the treatment station is located surface A comprising the lens-support-housing (17) and the tool-holder spindle (3 2 ) and a tubular magazine (38) in which the lenses to be machined are stacked. 9. Machine selon la revendication 8, caractérisée en ce que le poste de traitement de surface A et le chargeur tubulaire (38) sont situés sur deux lignes orthogonales (xx1)/yy1) se croisant sur l'axe de rotation 0 desdits bras (41/42) et en ce que les ventouses (44/45) sont, à leur position initiale de repos, situées sur les bissectrices (0I/0J) des angles (AOC/AOB) formés par lesdites lignes orthogonales, de telle sorte que lors du pivotement des bras (41/42) dans un sens ou dans l'autre, les ventouses (44/45) se placent : dans un sens (F1), l'une au-dessus du boîtier support de lentilles (17), l'autre au-dessus du chargeur tubulaire (38) ou dans le sens opposé (F2) : l'une au-dessus du boîtier support de lentilles (17) et l'autre au-dessus d'une des extrémités (39b) d'un convoyeur (39) pour diriger vers un stockage les lentilles façonnées sur une face.9. Machine according to claim 8, characterized in that the surface treatment station A and the tubular loader (38) are located on two orthogonal lines (xx1) / yy1) crossing on the axis of rotation 0 of said arms (41/42) and in that the suction cups (44/45) are, in their initial rest position, located on the bisectors (0I / 0J) of the angles (AOC / AOB) formed by said orthogonal lines, so that when the arms (41/42) pivot in one direction or the other, the suction cups (44/45) are place: in one direction (F 1 ), one above the lens support housing (17), the other above the tubular magazine (38) or in the opposite direction (F2): one at above the lens support housing (17) and the other above one of the ends (39b) of a conveyor (39) for directing the lenses formed on one side to storage. 10. Machine selon l'une quelconque des revendications 1 à 7, comportant deux unités de traitement de surface (I/II) juxtaposées, caractérisée en ce que les moyens pour mettre les lentilles au contact des outils à doucir ou à polir (8) et pour enlever les lentilles après qu'elles aient été doucies ou polies, sont deux ensembles de deux bras (41/42) situés dans un même plan horizontal et dont chaque ensemble est monté à rotation autour d'un axe vertical (0/01), lesquels bras (41/42) comportent, à leur extrémité libre, une ventouse (44/45) dans laquelle aboutit une conduite d'air sous pression (48) et une conduite d'air en dépression (49) et les ventouses (44/45) de chaque ensemble de deux bras (41/42) se déplacent sur une circonférence (40) sur laquelle se trouve, sur une desdites unités (I) : un poste de traitement de surface (A) comportant un boîtier support de lentilles (17) et une broche porte outil (32), un chargeur tubulaire (38) dans lequel sont empilées les lentilles à façonner et un organe de retournement des lentilles (51) pour les mettre en position de surfaçage sur un support-relais'(53) de la deuxième unité (II) et en ce que les ventouses (44/45) de l'autre ensemble de deux bras (41/42) de l'autre unité (II) se déplacent sur une circonférence (40) sur laquelle se trouve : ledit support-relais (53) sur lequel ledit organe de retournement (51) dépose les lentilles pour façonner la deuxième face, un poste de traitement de surface (AI) comportant un boîtier-support-de-lentille (17) et une broche porte-outil (32) et une des extrémicés (39a) d'un convoyeur (39) pour diriger les lentilles façonnées sur les deux faces vers un stockage.10. Machine according to any one of claims 1 to 7, comprising two juxtaposed surface treatment units (I / II), characterized in that the means for bringing the lenses into contact with the grinding or polishing tools (8) and to remove the lenses after they have been smoothed or polished, are two sets of two arms (41/42) located in the same horizontal plane and each set of which is mounted for rotation about a vertical axis (0/0 1 ), which arms (41/42) comprise, at their free end, a suction cup (44/45) in which a pressurized air line (48) and a vacuum air line (49) terminates and the suction cups (44/45) of each set of two arms (41/42) move on a circumference (40) on which there is, on one of said units (I): a surface treatment station (A) comprising a housing lens holder (17) and a tool holder spindle (3 2 ), a tubular magazine (38) in which the shaped lenses are stacked er and a lens turning member (51) to put them in the surfacing position on a relay support '(53) of the second unit (II) and in that the suction cups (44/45) of the other set of two arms (41/42) of the other unit (II) move on a circumference (40) on which is located: said relay support (53) on which said turning member (51) deposits the lenses to shape the second face, a surface treatment station (A I ) comprising a lens-support housing (17) and a tool-holder spindle (3 2 ) and one of the ends (39a) of a conveyor (39) to direct the shaped lenses on both sides to a storage. 11. Machine selon la revendication 10, caractérisée en ce que le poste de traitement de surface (A) et le chargeur tubulaire (38) d'une desdites unitês (I) sont situés sur deux lignes orthogonales (XX1/YY1) se croisant sur l'axe de rotation (0) d'un des ensembles de deux bras (41/42) dont les ventouses (44/45) sont,à leur position initiale de repos, situées sur les bissectrices (OI/OJ) des angles (AOC/ AOB) formés par lesdites lignes orthogonales, de telle sorte que lors du pivotement des bras (41/42) dans un sens ou dans l'autre, les ventouses (44/45) se placent dans un sens (FI) : l'une au-dessus du boîtier-support-de-lentille (17), l'autre au-dessus du chargeur tubulaire (38) ou dans le sens opposé (F2) : l'une au-dessus du boîtier-support-de-lentille (17) et l'autre au-dessus du récepteur de lentille (51a) de l'organe de retournement (51) pour déposer, sur ledit récepteur (51a), la lentille venant d'être façonnée sur une face et en ce que le poste de traitement de surface (A1) et ledit support-relais (53) de l'autre unité (II) sont situés sur deux lignes orthogonales (ZZ1/YY1) se croisant sur l'axe de rotation (O1) de l'autre ensemble de deux bras (41/42) dont les ventouses (44/45) sont, à leur position initiale de repos, situées sur les bissectrices (01 I1 / 01 J1) des angles (A1O1B1/A1O1C1) formés par lesdites lignes orthogonales, de telle sorte que, lors du pivotement des bras (41/42) dans un sens ou dans l'autre, les ventouses se placent-dans une sens (FI) : l'une au-dessus du boîtier-support-de-lentille (17), l'autre au-dessus du support-relais (53) ou dans le sens opposé (F2) : l'une au-dessus du boîtier support de lentille (17), l'autre au-dessus d'une des extrémités (39a) d'un convoyeur (39) pour diriger les lentilles façonnées sur les deux faces vers un stockage.11. Machine according to claim 10, characterized in that the surface treatment station (A) and the tubular loader (38) of one of said units (I) are located on two orthogonal lines (XX 1 / YY 1 ) crossing on the axis of rotation (0) of one of the sets of two arms (41/42) whose suction cups (44/45) are, in their initial rest position, located on the bisectors (OI / OJ) of the angles (AOC / AOB) formed by said orthogonal lines, so that when the arms are pivoted (41/42) in one direction or the other, the suction cups (44/45) are placed in one direction (F I ): one above the lens-support-housing (17), the other above the tubular magazine (38) or in the opposite direction (F2): l one above the lens-support housing (17) and the other above the lens receiver (51a) of the turning member (51) for depositing, on said receiver (51a), the lens having just been shaped on one side and in that the surface treatment station (A 1 ) and said relay support (53) of the other unit (II) are located on two orthogonal lines (ZZ 1 / YY 1 ) crossing on the axis of rotation (O 1 ) of the other set of two arms (41/42) of which the vacuum pads (44/45) are, in their initial rest position, situated on the bisectors (0 1 I 1/0 1 J 1) of angles (A 1 O 1 B 1 / A 1 O 1 C 1) formed by said orthogonal lines, such that, during the pivoting of the arms (41/42) in one direction or the other, the suction cups are placed-in one direction (F I ): one above the housing- lens-support (17), the other above the relay support (53) or in the opposite direction (F 2 ): one above the lens support housing (17), the other above one end (39a) of a conveyor (39) for directing the shaped lenses on both sides to a storage. 12. Machine selon l'une quelconque des revendications 10 et I1, caractérisée en ce que l'organe de retournement des lentilles (51) adopte la forme générale d'un bras comportant,à son extrémité libre, ledit récepteur de lentilles (51a), lequel bras est monté pivotant autour d'un axe vertical (50) et comporte des moyens pour le faire pivoter de 180° dans un plan horizontal et pour le faire tourner simultanément sur lui-même pour retourner de 180° le récepteur de lentilles (51a) afin de déposer la lentille sur le support-relais (53) et la mettre dans la position de surfaçage de la face non encore usinée.12. Machine according to any one of claims 10 and I1, characterized in that the lens turning member (51) adopts the general shape of an arm comprising, at its free end, said lens receiver (51a) , which arm is pivotally mounted about a vertical axis (50) and comprises means for rotating it 180 ° in a horizontal plane and for rotating it simultaneously on itself to turn the lens receiver 180 ° ( 51a) in order to deposit the lens on the relay support (53) and put it in the surfacing position of the face not yet machined.
EP83430010A 1982-03-26 1983-03-18 Smoothing and polishing machine for optical lenses Expired EP0090752B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83430010T ATE17092T1 (en) 1982-03-26 1983-03-18 MACHINE FOR SMOOTHING AND GRINDING OPTICAL LENSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205363A FR2523890A1 (en) 1982-03-26 1982-03-26 DOUBLING OR POLISHERING MACHINE FOR OPTICAL LENSES
FR8205363 1982-03-26

Publications (2)

Publication Number Publication Date
EP0090752A1 true EP0090752A1 (en) 1983-10-05
EP0090752B1 EP0090752B1 (en) 1985-12-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83430010A Expired EP0090752B1 (en) 1982-03-26 1983-03-18 Smoothing and polishing machine for optical lenses

Country Status (6)

Country Link
US (1) US4520596A (en)
EP (1) EP0090752B1 (en)
AT (1) ATE17092T1 (en)
DE (1) DE3361604D1 (en)
ES (1) ES520744A0 (en)
FR (1) FR2523890A1 (en)

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DE10029966A1 (en) * 2000-06-26 2002-01-17 Loh Optikmaschinen Ag Device for loading and unloading optical workpieces
EP1719582A1 (en) 2005-05-06 2006-11-08 Satisloh GmbH High-speed milling and turning machine and method of machining especially spectacle glasses

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US5733175A (en) * 1994-04-25 1998-03-31 Leach; Michael A. Polishing a workpiece using equal velocity at all points overlapping a polisher
US5814134A (en) * 1994-06-10 1998-09-29 Johnson & Johnson Vision Products, Inc. Apparatus and method for degassing deionized water for inspection and packaging
US5649410A (en) * 1994-06-10 1997-07-22 Johnson & Johnson Vision Products, Inc. Post-hydration method and apparatus for transporting, inspecting and packaging contact lenses
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US5578331A (en) * 1994-06-10 1996-11-26 Vision Products, Inc. Automated apparatus for preparing contact lenses for inspection and packaging
US5607341A (en) * 1994-08-08 1997-03-04 Leach; Michael A. Method and structure for polishing a wafer during manufacture of integrated circuits
US5972251A (en) * 1996-10-16 1999-10-26 Bausch & Lomb Incorporated Method for blocking a contact lens button
US6942554B1 (en) * 2002-07-22 2005-09-13 Optimax Systems, Inc. Apparatus and process for polishing a substrate
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US20050221721A1 (en) * 2004-04-05 2005-10-06 Valle Hector Leopoldo A Method and apparatus for grinding and polishing free-form ophthalmic surfaces
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US2933863A (en) * 1957-09-12 1960-04-26 Doll Wilhelm Apparatus for automatically supplying work pieces to glass treating machines for theoptical industry
DE1239211B (en) * 1964-10-14 1967-04-20 Wilhelm Lot K G Optikmaschinen Gimbal-mounted optical grinding or polishing tool
FR1499242A (en) * 1966-08-04 1967-10-27 C M V Improvements to workpiece carriers for machining spherical surfaces, in particular lenses
GB1311851A (en) * 1969-04-30 1973-03-28 Crockford E M Machines for smoothing an polishing lens
FR2204990A5 (en) * 1972-10-26 1974-05-24 Loh Kg Optikmaschf
US3889426A (en) * 1974-01-07 1975-06-17 Bausch & Lomb Optical lens generating machine having an air rotatable spherical bearing workpiece holder
FR2277650A1 (en) * 1974-07-12 1976-02-06 Essilor Int Appts for machining spectacle lenses - uses vacuum mounting chucks and transfer arm to support lenses during grinding operation
FR2332841A1 (en) * 1975-11-28 1977-06-24 Efop Polishing glass lenses on machine with oscillating polishing head - with automatic loading of lenses onto support jig

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DE10029966A1 (en) * 2000-06-26 2002-01-17 Loh Optikmaschinen Ag Device for loading and unloading optical workpieces
DE10029966B4 (en) * 2000-06-26 2004-07-29 Loh Optikmaschinen Ag Device for loading and unloading optical workpieces
EP1719582A1 (en) 2005-05-06 2006-11-08 Satisloh GmbH High-speed milling and turning machine and method of machining especially spectacle glasses

Also Published As

Publication number Publication date
FR2523890B1 (en) 1984-07-06
DE3361604D1 (en) 1986-02-06
ES8400912A1 (en) 1983-12-16
EP0090752B1 (en) 1985-12-27
ATE17092T1 (en) 1986-01-15
US4520596A (en) 1985-06-04
ES520744A0 (en) 1983-12-16
FR2523890A1 (en) 1983-09-30

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