EP0090752B1 - Machine doucisseuse ou polisseuse pour lentilles optiques - Google Patents

Machine doucisseuse ou polisseuse pour lentilles optiques Download PDF

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Publication number
EP0090752B1
EP0090752B1 EP83430010A EP83430010A EP0090752B1 EP 0090752 B1 EP0090752 B1 EP 0090752B1 EP 83430010 A EP83430010 A EP 83430010A EP 83430010 A EP83430010 A EP 83430010A EP 0090752 B1 EP0090752 B1 EP 0090752B1
Authority
EP
European Patent Office
Prior art keywords
lens
lenses
spindle
casing
arms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83430010A
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German (de)
English (en)
French (fr)
Other versions
EP0090752A1 (fr
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
Original Assignee
Etudes et Fabrications Optiques SA
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Filing date
Publication date
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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/de
Publication of EP0090752A1 publication Critical patent/EP0090752A1/fr
Application granted granted Critical
Publication of EP0090752B1 publication Critical patent/EP0090752B1/fr
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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 surfacing glass and more particularly optical glasses.
  • polishing machine with semi-automatic operation.
  • a polishing machine with semi-automatic operation.
  • Such a machine is described in document FR-A-2 332 841. It comprises a frame on which is mounted a polisher, a glass holder-housing, means for bringing the polishing glasses in contact with the polisher and for take the glasses back after being polished, which glass-holder-case is mounted to rotate freely on the frame.
  • Said polisher is rotated by a motor carried by a movable head located above said glass holder housing, which movable head is driven by an oscillating movement.
  • This machine is specially designed to polish optical glasses semi-automatically.
  • the objective of the present invention is the development of a machine making it possible to "soften” or 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 the 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 slow-support-housing is carried by a vertically displaceable pin, which is mounted in a sheath, flared at its upper part, to form two spans 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 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 bodywork comprising doors 1a for accessing the organs of the machine.
  • the machine comprises, at its upper part, an oscillating tool-holder head 2 which is pivotally mounted about a horizontal axis 2a, which is located at the rear end of an arm 2b and carries at its end opposite to the axis 2a, a movable orientable head 3.
  • This consists of a chassis 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 screw end 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 eastern movable head 3 is illustrated on a larger scale in Figure 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 orientable head 3 also comprises, 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 V-belts.
  • 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 performing 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 2C 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 of 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 comprises, at its upper end, a cylindrical housing 9f, extending approximately over the half-length of the axis.
  • This comprises, in its central part, a pusher 9 1 extending: from its lower part to its upper part which it exceeds.
  • Said pusher 9 i consists of a cylindrical rod 1 to 9 extending in the lower part, by a first cylindrical prominence 9 1b, the latter so extended by a second prominence 9i 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, consists of the head of a screw 9 1 e, screwed into a tapped hole reserved in the center of the rod 9 1 a.
  • 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 protrusion 9 1 c has in its center a blind hole 9 1 g forming a hexagon socket so as to be able to maneuver the axis by means of a wrench and to screw or unscrew it in the spindle 3 2 during the positioning or removal of 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 thereto by its ends, by being forced into reserved holes in the wall of chamber 9d, which pins crosses a diametrical, rectangular lumen with rounded edges 9 1 j, reserved in the prominence 9 1 b.
  • the light 9 1 j is large enough to allow the erasure of the head of the screw 9le when a pressure is exerted on its top, which has the effect of causing the protrusion 9ic to come out of the pusher and therefore to separate the lens remained with tool 8 at the end of 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.
  • the pusher 9 1 As can be seen in FIG. 4, the pusher 9 1 is, in its initial rest position, slightly retracted with respect 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 s of the movable head 3 coaxially with the rod 10 and pin 3 2 .
  • the end 10a the rod 10 is near 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 about a horizontal axis 21 on which support 20 is fixed the gearmotor 14.
  • the lens-support housing 17 is carried by a pin 22, disposed in a cylindrical sheath 23, mounted to slide in a boss 1 b 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 end 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 1b in which it is mounted in a cylindrical conduit 1c coaxial with said boss and has a flat 23e, reserved on the side of its lower part on which rests a locking screw 25 comprising an operating lever 25a cooperating with a thread formed in the boss 1 and extending perpendicularly to the axis of the spindle 22 and 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 orthogonal ment 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 the latter. 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-holder-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 Figure 6 is concave of a generally spherical shape and has, 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 agglomerate and rubber, which comprises, for example coating of the perforations 17 3 a distributed along 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 removal at the end of the surfacing operation.
  • 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 its side wall.
  • 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 a forming a sort of plate at its lower part and a conical part 31b which envelops said central part 31a, which part 31b is rotatably mounted on the part 31a on a ball bearing 32, fitted around the central part 31a and in a cylindrical housing 31 d of the conical part 31 b.
  • the central part 31 a which is fixed, comprises a conical housing 31 a i whose apex is directed towards the side of the upper part of the head 31, which apex is reserved in an attached wear part 33, made of carbide steel .
  • 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 1 and of the part added 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 cylindro-conical shape and extending downwards, 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 spindle 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 oscillating tool-holder 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 to 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, as 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 O.
  • Station A is located in front of the operator and comprises 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 Ri.
  • 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 O and a part 41 b / 42b which is parallel to the line XX 1 , 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 01 of the angle AOC, and the suction cup 45 is located at the intersection 47 of the bisecting line OJ of the AOB angle.
  • Lines 01 / OJ form a right angle.
  • each of the suction cups 44/45 there terminates 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 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.
  • Stations A and B / C are located on two orthogonal axes XX 1 / YY 1 which intersect at a point O.
  • Stations A 1 and B 1 / C 1 are located on two orthogonal axes ZZ 1 / YY 1 which intersect at a point O 1 .
  • the stations B, C, B 1 , C 1 are aligned on the axis YY 1 .
  • a transfer device 51 also called a turning member and comprising a lens receiver 51a carried by an arm 51b.
  • the pivot axis 50 is located on the axis YY 1 in the middle of the distance between the stations B 1 and C.
  • the lens receiver 51 has described a circumference 52 for passing the lenses from station C to station B 1 .
  • the arms 41/42 of the two units I 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.
  • a box 17 surmounted by an oscillating tool-holder head 2; at station B there is a lens loader 38, identical to that which has been previously described.
  • the unit It 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.
  • 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 51 a, rotates by 180 °, so that the lens deposited on the receiver 51 a 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 51 b on itself during the 180 ° pivoting of the turning member is obtained by means of a bevel gear, one pinion of which is wedged at the end of the arm 51 b and the other in 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)
  • Lenses (AREA)
  • Eyeglasses (AREA)
EP83430010A 1982-03-26 1983-03-18 Machine doucisseuse ou polisseuse pour lentilles optiques Expired EP0090752B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83430010T ATE17092T1 (de) 1982-03-26 1983-03-18 Maschine zum glaetten und schleifen von optische linsen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205363 1982-03-26
FR8205363A FR2523890A1 (fr) 1982-03-26 1982-03-26 Machine doucisseuse ou polisseuse pour lentilles optiques

Publications (2)

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

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ID=9272523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83430010A Expired EP0090752B1 (fr) 1982-03-26 1983-03-18 Machine doucisseuse ou polisseuse pour lentilles optiques

Country Status (6)

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US (1) US4520596A (es)
EP (1) EP0090752B1 (es)
AT (1) ATE17092T1 (es)
DE (1) DE3361604D1 (es)
ES (1) ES520744A0 (es)
FR (1) FR2523890A1 (es)

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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
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
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US6942554B1 (en) * 2002-07-22 2005-09-13 Optimax Systems, Inc. Apparatus and process for polishing a substrate
JP3675448B2 (ja) * 2003-03-31 2005-07-27 セイコーエプソン株式会社 テープ巻き付け装置
US20050221721A1 (en) * 2004-04-05 2005-10-06 Valle Hector Leopoldo A Method and apparatus for grinding and polishing free-form ophthalmic surfaces
KR20080025042A (ko) * 2005-04-19 2008-03-19 스페셜 코팅 래보라토리 인터내셔날 광학렌즈 또는 다른 기판의 세척 장치용 세정기기
DE102005021639A1 (de) 2005-05-06 2006-11-09 Satisloh Gmbh Hochleistungs-Fräs- und Drehmaschine sowie Verfahren zur Bearbeitung von Brillengläsern
CN112454143A (zh) * 2020-11-25 2021-03-09 安徽申禾智能科技有限公司 一种五金加工抛光装置及其使用方法
CN113118916B (zh) * 2021-03-17 2022-08-16 上海工程技术大学 一种大型环抛机工件环驱动设备

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Also Published As

Publication number Publication date
FR2523890A1 (fr) 1983-09-30
ES8400912A1 (es) 1983-12-16
DE3361604D1 (en) 1986-02-06
ATE17092T1 (de) 1986-01-15
ES520744A0 (es) 1983-12-16
US4520596A (en) 1985-06-04
FR2523890B1 (es) 1984-07-06
EP0090752A1 (fr) 1983-10-05

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