EP0685298B2 - Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen - Google Patents
Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen Download PDFInfo
- Publication number
- EP0685298B2 EP0685298B2 EP94117272A EP94117272A EP0685298B2 EP 0685298 B2 EP0685298 B2 EP 0685298B2 EP 94117272 A EP94117272 A EP 94117272A EP 94117272 A EP94117272 A EP 94117272A EP 0685298 B2 EP0685298 B2 EP 0685298B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- feeding
- tool
- workpiece
- cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
Definitions
- the invention relates to a device for making aspherical lens surfaces.
- Another manufacturing process for spherical lenses processes the mostly preformed glass compacts with a diamond cup wheel Ball loops.
- the feed takes place either with the Tool spindle or with the workpiece spindle to which the diamond cup wheel at a defined angle stands.
- the radius of the sphere on the lens is determined by this Setting angle determined so that within certain Limit different spherical shapes with one and the same Tool can be produced. His sanding surface but changes due to wear during the grinding process the shape by adapting to itself changing spherical radii. If with the same pot tool changing ball radii can be machined should therefore be the grinding diameter to be generated not to be determined in advance.
- optical lenses with aspherical surfaces a number of advantages. So is the mapping performance significantly increased compared to spherical lenses. Image errors are better corrected, and in optical ones Systems can be achieved through the use of aspherical lenses the number of lenses can be reduced. These advantages left have so far only been used to a very limited extent.
- DE-A-2 441 976 describes a suction cup for lens blanks that have an aspherical Should get surface.
- the one sunk in the middle Negative contour is on top of one rigid glass blocks. This is centric pierced and clamped on a plate chuck, the rotatable via a hollow shaft with pump connection is driven.
- the sucked blank can after Machining its top turned and on one similarly shaped second glass block on its bottom to be edited.
- the process uses thin, bendable blanks ahead and exhibits the above Disadvantages.
- EP-A2-0 453 094 describes a method and a Device for grinding toric lenses.
- On rotating diamond pot tool is selected with one Head angle in a swivel motion a linearly fed lens blank, wherein the swivel radius of the tool during a Swivel movement can be changed.
- the pot tool is on a swiveling cross slide arranged on a horizontal Axis pivotable and in and out in the radial direction extendable base slide is mounted.
- Around the corner of your head and thus along the vertical curvature of the lens of the changing circular path hold the tool with the help of the cross slide readjusted according to its position.
- DE-A1-33 19 719 discloses a machine for machining curved workpiece surfaces, especially concave or convex rug areas, as well as non-spherical rotating body surfaces of workpieces material suitable for the planned use exist, by means of one material-lifting tool.
- one Machine frame is a first turning tool support arranged, the turning tool being a cup-shaped grinding tool. That with the one to be processed curved surface of the in relation to the Machine frame fixed, rotating drivable work stitch during the editing process bringar is.
- the spindle of the tool is attached to a second support, the during the machining process using of a system with numerical control about one to the axis of rotation of the tool vertical axis of rotation is based on rotation, the second support from a third Support that is worn during the Machining process according to the numerical control according to the dwarf to each other and to the rotary eight perpendicular Axis is adjustable to this rotating eight of the second support according to vertical coordinates arranged to each other adjust and the curved surface to process the work hours, under simultaneous numerical control in two mutually perpendicular and / or Circular directions.
- the workpiece is made by a head of one Revolver type rotary supports worn and can be used to make a convex non-spherical surface be rotated around its optical axis.
- the object of the invention is to overcome the disadvantages of the prior art the technology, the inexpensive manufacture of aspherical lenses significantly improve and accelerate. Furthermore, the processing time should be short high precision can be achieved without the need for post-processing. An important goal is to assess the impact of tool wear on the To minimize lens shape as far as possible.
- This simple and compact, modular structure of a grinding machine according to claim 1 is clear, very precisely controllable and economical, especially since conventional linear drives are used can find.
- the integrated measuring and correction system ensures that precise and rational production of both extremely precise aspherical lens surfaces as well as so-called free-form surfaces, even in small series or Individual production.
- the main advantages of the invention are that contour-accurate, rotationally symmetrical lens surfaces independent of the central one Planning ahead and making bills with potting tools can be different Can have diamond grit, but do not require dressing which would affect the lens geometry. That by means of the feed axes to the The pan tool brought up to the workpiece comes due to its preselected inclination only with the corresponding pre-selected location on the workpiece to the system, i.e. the peripheral edge of the pot tool only touches the workpiece in one relatively narrow point of contact.
- the grinding machine runs the rotating driven Workpiece holder opposite to the pot tool around; it is equipped with a further feed drive along a vertical axis moved into a machining position, the workpiece spindle of the workpiece holder can be converted into a controlled rotary axis by switching axes.
- the lead angle can always be in point contact Change the adjoining pot tool before starting the machining in such a way that a special desired grinding area diameter is set on the pot tool, at which the point of contact of the peripheral part always behind the piercing point of the Outer axis line is.
- the grinding machine DE-A1-33 19 719 is missing an additional rotary actuator for one with respect to the workpiece holder coaxial axis, in particular in close proximity to the second Feed drive. Likewise there is a switchover device for the transition the holder operation from pure rotary motion to controlled rotary axis operation and vice versa not provided according to this prior art.
- the device according to claim 2 is designed so that the pot tool arranged at a fixed distance from the transverse axis and by means of a linear feed drive is pivotable. According to claim 3, this can be parallel to the feed direction of the first drive, which offers structural advantages, e.g. a simplified Frame and slide design.
- an in EP-A2-0 304 106 outlined method of a flat control surface, with selectable Axis offset is tangent to the rotating workpiece and together with a Tool is pivotable on a circular path about a common axis of rotation.
- the extent of the axis offset determines the asphericity during machining, that happens in the dewatered state of the lens blank on a lathe. It however, every setting must be specified and not during the cutting process changeable so that precise individual adjustments are not possible.
- a workpiece W is shown, which is in shape of a lens blank L from a pot tool T with inclined axis A along a machining contour K is processed.
- a peripheral part U sits on the edge of the Workpiece W and touches it at point P, the Outer axis line A 'a constant lead angle ⁇ to the tangent F includes.
- the workpiece W is rotating driven and runs counter to the pot tool um, from the edge of the workpiece W over the middle of which is led out.
- the lead angle remains ⁇ , which is also between the outer axis line A ' and the normal N to the tangent F is recognizable (Fig. 1), the same throughout.
- the point of contact P is always behind Piercing point of the outer axis line A ', and the contact line or - annular surface of the peripheral part U guaranteed an even and gentle Material removal.
- the effective diameter D of the peripheral part U can tilt the pan tool T and the lead angle ⁇ for the respective Grinding or polishing task can be optimally set.
- a preprocessing with a spherical surface O to be carried out with an adjustment angle (Fig. 2) a constant inclination of the pot tool T to Axis Z of the value spindle S is specified.
- the structural design is illustrated in Fig. 3.
- the CNC machine tool labeled 10 in total has a frame 12 with a table 14, on which a horizontal frame 16 is arranged. Thereon a carriage 18 with a housing 20 is displaceable arranged. With the housing 20 is a head 22 connected, which contains a reversing gear 24 and a rotatably driven tool spindle V holds.
- a carriage 28 is on a vertical frame 26 a rotary drive 30 for a rotary spindle S, which carries a holder H for the workpiece W.
- the carriage 18 is by means of a second feed drive I movable in the direction of an axis X.
- a first feed drive II is provided for the carriage 28, which is a movement in the direction of an axis Z allows.
- the head 22 is about a transverse axis B. swiveling, for which a third feed drive III is used, which is arranged parallel to the X axis.
- a further feed drive IV available, which in relation is centered on the axis Z and after Switchover from the rotary drive of the workpiece spindle S their control by means of an additional rotary axis C enables.
- FIG. 4 A general flow chart of the workflow can be seen from Fig. 4. First you choose the Processing type depending on whether an aspherical or spherical machining contour K (Fig. 1) specified becomes. Then the geometry type is selected, the can be convex, concave or flat. The associated Geometry parameters such as radius of curvature, outer diameter, Center thickness of the lens etc. and the tool or processing parameters as more effective Diameter of the peripheral part U, its lip radius, Lead angle b, feed speed and speed of the pot tool are then entered. This becomes the in the control unit Tool path calculated, whereupon the machining of the Lens is made along the machining contour K. in the Connection to this step of grinding and / or polishing, the surface O is scanned, what is used to obtain correction data, to correct the tool path for a Subsequent processing can be used.
- Geometry parameters such as radius of curvature, outer diameter, Center thickness of the lens etc. and the tool or processing parameters as more effective Diameter of the peripheral part U, its lip radius, Lead angle
- the basic structure of a suitable device is shown schematically in Fig. 5.
- the CNC machine tool 10 has a control panel 40, preferably with Screen, and an input / output part 50 which can be designed as a keyboard. Both units stand in connection with a microprocessor computer R, the measuring systems M1 to M4 are assigned. The latter are connected to a control unit E, which the feed drives I to III directly influenced.
- On Switching device or switch 60 is used, optionally only the rotary drive 30 for the workpiece spindle S or the fourth feed drive IV for the axis C to control.
- the machine 10 has a modular structure and with (not shown) highly dynamic Servomotors. Interpolators, not shown ensure that the tool guide after Specification of the machining contour K in very fine steps - i.e. quasi-continuously - can be controlled and thus the manufacture of usable aspherical surfaces guaranteed. This can be compensatory movements are taken into account as well as possible Polishing allowances provided for an extremely aspherical contour can be a non-linear material removal to compensate.
- the additional C-axis for the workpiece spindle S also allows free-form surface processing following basically the same procedure. Also here is a servo drive and a rotation measuring system provided for the controlled rotary axis, so that after Axis switching may require off-center surface machining can be executed. Are these not required, the switch 60 goes to clean Rotary drive 30 for the workpiece spindle S over.
- a CNC machine tool with a rotating pot tool T for grinding and / or polishing a workpiece W in a bracket H is used.
- the pot tool T is specified along a control unit E. Machining contour K performed such that between the longitudinal axis A of the pot tool T and the tangent F in its contact point P on the workpiece W an optional lead angle ⁇ of e.g. 0 ° kept constant becomes.
- Each axis X, Z, B, C is a measuring system M1, M2, M3, M4 assigned, their measured values as well Sampling values of the processed surface in the control unit E feedable and in a microprocessor computer R by comparing the actual surface profile with the machining contour K for recalculating the Tool path can be evaluated.
- the surface of the Lentil blank L can be pre-machined to a spherical shape, that of the given machining contour K is largely approximated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Lenses (AREA)
Description
- Fig. 1
- eine schematische Seitenansicht einer Bearbeitungsgeometrie mit unterschiedlich geneigtem Topfwerkzeug,
- Fig. 1a
- eine vergrößerte Seitenansicht der Werkzeugstellung bei Arbeitsbeginn,
- Fig. 1b
- eine vergrößerte Seitenansicht der Werkzeugstellung bei Arbeitsende,
- Fig. 2
- eine schematische Seitenansicht eines Topfwerkzeuges bei sphärischer Linsenbearbeitung,
- Fig. 3
- eine schmematisierte Schrägansicht einer CNC-Werkzeugmaschine mit vier Achsen,
- Fig. 4
- ein Flußdiagramm eines Arbeitsablaufs und
- Fig. 5
- ein Grundschema einer CNC-Werkzeugmaschnine.
- α
- Einstellwinkel
- β
- Vorhaltewinkel
- τ
- Tangentenwinkel
- I, II, III, IV
- Vorschubantriebe
- A
- Achse (von T)
- A'
- Außenachslinie
- B
- Querachse
- C
- mittige Achse
- D
- Durchmesser (von U)
- E
- Steuereinheit
- F
- Tangente
- H
- Halterung
- K
- Bearbeitungskontur
- L
- Linsenrohling
- M1,M2,M3,M4
- Meßsysteme
- N
- Normale (zu F)
- O
- Oberfläche (von W)
- P
- Berührungspunkt (T auf W)
- R
- Mikroprozessor-Rechner
- S
- (Rotations-)Spindel
- T
- Topfwerkzeug
- U
- Umfangsteil
- V
- Werkzeugspindel
- W
- Werkstück
- X
- Achse
- Z
- Achse
- 10
- CNC-Werkzeugmachine
- 12
- Gestell
- 14
- Tisch
- 16
- Horizonalrahmen
- 18
- Schlitten
- 20
- Gehäuse
- 22
- Kopf
- 24
- Umlenkgetriebe
- 26
- Vertikalrahmen
- 28
- Schlitten
- 30
- Drehantrieb (für H/W)
- 40
- Bedientafel
- 50
- Eingabe-/Ausgabe-Einheit
- 60
- Umschalt-Einrichtung / Weiche
Claims (4)
- Vorrichtung zum Herstellen von asphärischen Oberflächen an Linsenrohlingen (L), namentlich aus Glas, bestehend aus einer CNC-Werkzeugmaschine mit einer Steuereinheit (E), mit einem um eine Achse (A) rotierend angetriebenen zustellbaren Topfwerkzeug (T) zum Schleifen und/oder Polieren des Linsenrohlings (L) und mit einer mittels eines ersten Vorschubantriebs (II) entlang einer ersten Vorschubachse (Z) in eine Bearbeitungsposition bewegbaren Halterung (H) zur Aufnahme des Linsenrohlings (L), wobei das Topfwerkzeug (T) um eine Schwenkachse (B) senkrecht zur ersten Vorschubachse (Z) schwenkbar und mittels eines zweiten Vorschubantriebs (I) entlang einer zweiten Vorschubachse (X) senkrecht zur Schwenkachse (B) sowie zur ersten Vorschubachse (Z) linear verstellbar ist und wobei jeder Achse (X, Z, B) ein Meßsystem (M1, M2, M3, M4) zugeordnet ist, deren Meßwerte sowie Abtastwerte der bearbeiteten Oberfläche in die Steuereinheit (E) einspeisbar und in einem Mikroprozessor-Rechner (R) durch Vergleich des Oberflächen-lstverlaufs mit einer Bearbeitungskontur (K) zur Korrektur der Werkzeugbahn auswertbar sind, wobei das Topfwerkzeug (T) an die mittels eines Drehantriebs (30) um die erste Vorschubachse (Z) rotierbare Halterung (H) mit einer über einen Vorhaltewinkel (β) wählbaren Anlagestelle (P) heranführbar und mittels der Steuereinheit (E) durch Interpolationssteuerung der Vorschubachsen (X, Z) sowie der Schwenkachse (B) vom Rand des Werkstücks (W) zu seiner Mitte und darüber hinaus mit punktförmiger Berührung am Linsenrohling (L) entlang der Bearbeitungskontur (K) führbar ist, wobei die Werkstückhalterung (H) bei eingeschaltetem Drehantrieb (30) entgegengesetzt zum Topfwerkzeug (T) umläuft und mit dem ersten Vorschubantrieb (II) entlang der vertikalen zur achse (Z) in eine Bearbeitungsposition bewegbar ist, wobei zur Rotation der Werkstücks halterung (H) um eine zuzätzliche, zu der vertikalen ersten Vorschubachse (Z) koaxiale Achse (C) ein zusätzlicher Antriebs modul (IV) vorhanden ist, insbesondere in räumlicher Nähe zu dem ersten Vorschubantrieb (II), wobei der zusätzliche Antrieb (IV) einem gesteuerten Rundachsenbetrieb dient, und wobei eine Umschalt-Einrichtung (60) zum Übergang des mittels des ersten Drehantriebs (30) durchführbaren Halterungs-Betriebs von reiner Drehbewegung auf mittels des zusätzlichen Antriebs moduls (IV) durchfürhrbaren gesteuerten Rundachsen-Betrieb und umgekehrt vorhanden ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Topfwerkzeug (T) in festem Abstand zu der Querachse (B) angeordnet und mittels eines linearen dritten Vorschubantriebs (III) verschwenkbar ist.
- Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der dritte Vorschubantrieb (III) parallel zu der Vorschubrichtung des zweiten Antriebs (I) angeordnet ist.
- Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 3 zum Herstellen von asphärischen Oberflächen an Linsenrohlingen (L) durch Schleifen und/oder Polieren mit punktförmiger Berührung (P) des Topfwerkzeugs (T) unter wählbarem Konstant-Vorhaltewinkel (β) entlang der Bearbeitungskontur (K), wobei das Topfwerkzeug (T) am Linsenrohling (L) entlang der über die Steuereinheit (E) vorgegebenen Bearbeitungskontur (K) derart geführt wird, daß zwischen der Längsachse (A) des Topfwerkzeugs (T) und der Tangente (F) in seinem Berührungspunkt (P) am Werkstück (W) der wählbare Vorhaltewinkel (Kopfwinkel β) konstant eingehalten wird, gekennzeichnet durch folgende Merkmale:a) das mit einem Drehantrieb rotierend angetriebene Topfwerkzeug (T) wird mit einer über den Vorhaltewinkel (β) wählbaren Anlagestelle (P) an das um die erste Vorschubachse (Z) rotierende Werkstück (W) heranbewegt,b) das Topfwerkzeug (T) wird mittels der Steuereinheit (E) durch Interpolationssteuerung der Vorschubachsen (X) und (Z) sowie der Schwenkachse (B) vom Rand des Werkstücks (W) zu seiner Mitte und darüber hinaus entlang der Bearbeitungskontur (K) geführt,c) während oder nach der Bearbeitung des Werkstücks (W) werden Abtastwerte seiner Oberfläche gewonnen und bei Folgebearbeitung durch geänderte Bahnführung des Topfwerkzeugs (T) in der Steuereinheit (E) berücksichtigt
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4412370 | 1994-04-12 | ||
DE4412370A DE4412370A1 (de) | 1994-04-12 | 1994-04-12 | Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0685298A1 EP0685298A1 (de) | 1995-12-06 |
EP0685298B1 EP0685298B1 (de) | 1997-08-20 |
EP0685298B2 true EP0685298B2 (de) | 2002-08-07 |
Family
ID=6515074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94117272A Expired - Lifetime EP0685298B2 (de) | 1994-04-12 | 1994-11-02 | Verfahren und Vorrichtung zum Herstellen asphärischer Linsenoberflächen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0685298B2 (de) |
AT (1) | ATE157038T1 (de) |
DE (2) | DE4412370A1 (de) |
ES (1) | ES2107101T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004047563A1 (de) * | 2004-09-30 | 2006-04-06 | Asphericon Gmbh | Verfahren zum Polieren |
TWI410765B (zh) * | 2007-11-16 | 2013-10-01 | Hon Hai Prec Ind Co Ltd | 直軸非球面鏡面加工系統及方法 |
EP4509263A1 (de) | 2023-08-17 | 2025-02-19 | Roland Mandler GmbH & Co. KG | Verfahren zur bearbeitung einer oberfläche einer optischen linse oder eines optischen spiegels sowie vorrichtung zur bearbeitung einer oberfläche einer optischen linse oder eines optischen spiegels |
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FR2736292A1 (fr) * | 1995-07-04 | 1997-01-10 | Wernicke & Co Gmbh | Procede de polissage ainsi que, le cas echeant de percage, decoupage et soudage de verres a lunettes |
DE19543184A1 (de) * | 1995-09-18 | 1997-03-20 | Opto Phot Lichttechnik Gmbh | Vorrichtung zum Polieren von kegelförmigen Werkstückoberflächen |
DE19616526A1 (de) * | 1996-04-25 | 1997-11-06 | Rainer Jung | Maschine zur materialabtragenden Bearbeitung optischer Werkstoffe für die Herstellung von Optikteilen |
WO1999021682A1 (en) * | 1997-10-24 | 1999-05-06 | Precitech Inc. | A polishing apparatus for forming aspheric surfaces |
DE19751750B4 (de) * | 1997-11-21 | 2007-08-02 | Schneider Gmbh + Co. Kg | Verfahren und Vorrichtung zum Herstellen von polierbaren, optischen Linsen aus Linsenrohlingen |
DE19756960B4 (de) * | 1997-12-20 | 2011-06-09 | Asphericon Gmbh | Verfahren zum Bearbeiten von rotationssymmetrischen Funktionsflächen |
FR2805767B1 (fr) * | 2000-03-06 | 2002-06-21 | Essilor Int | Procede de fabrication d'une surface d'une lentille ophtalmique, installation de mise en oeuvre du procede et lentille ophtalmique obtenue selon le procede |
US6602110B2 (en) | 2001-06-28 | 2003-08-05 | 3M Innovative Properties Company | Automated polishing apparatus and method of polishing |
JP4336092B2 (ja) | 2002-10-21 | 2009-09-30 | 西部電機株式会社 | 磨きユニット付きnc加工機 |
DE10310561B4 (de) * | 2003-03-11 | 2007-04-26 | Optotech Optikmaschinen Gmbh | Verfahren und Vorrichtung zur Fertigung von Brillengläsern und anderen Formkörpern mit optisch aktiven Oberflächen |
DE102004028544B4 (de) * | 2004-01-17 | 2012-01-12 | Asphericon Gmbh | Verfahren zur Bearbeitung und Vermessung von rotationssymmetrischen Werkstücken sowie Schleif- und Polierwerkzeug |
DE102004019931B4 (de) * | 2004-04-21 | 2012-01-05 | Schneider Gmbh & Co. Kg | Korrekturverfahren für Zerspanungsmaschinen |
FR2902683B1 (fr) * | 2006-06-22 | 2008-10-10 | Essilor Int | Procede et machine d'usinage pour objet optique. |
DE102007050482B4 (de) * | 2007-10-19 | 2017-08-24 | Thielenhaus Technologies Gmbh | Verfahren und Vorrichtung zur Finishbearbeitung |
CN102049717A (zh) * | 2010-07-19 | 2011-05-11 | 长春理工大学 | 一种数控成形高次非球面控制方法及硬件系统 |
CN103192305A (zh) * | 2013-03-19 | 2013-07-10 | 西安交通大学苏州研究院 | 一种非球面光学元件的点接触抛光装置及方法 |
DE102014206424A1 (de) | 2014-04-03 | 2015-10-08 | Carl Zeiss Vision International Gmbh | Polierwerkzeug sowie Vorrichtung und Verfahren zur formfehleroptimierten Polierbearbeitung von Brillenlinsenoberflächen und Gießformschalen zur Brillenlinsenherstellung |
CN105196274A (zh) * | 2015-09-16 | 2015-12-30 | 中国科学院国家天文台南京天文光学技术研究所 | 大型天文望远镜拼接镜面子镜的装卸装置 |
CN107139345B (zh) * | 2017-06-08 | 2019-02-26 | 天津大学 | 脆性材料复杂曲面超精密车削成型方法 |
JP6592060B2 (ja) | 2017-11-01 | 2019-10-16 | ファナック株式会社 | 工作機械および塑性加工方法 |
TWI681845B (zh) * | 2018-11-15 | 2020-01-11 | 財團法人工業技術研究院 | 拋磨控制方法及系統 |
EP4063046A1 (de) * | 2021-03-23 | 2022-09-28 | Licardor GmbH | Verfahren und vorrichtung zur drehbearbeitung von werkstücken |
CN114460900B (zh) * | 2021-12-24 | 2023-02-10 | 泉州华中科技大学智能制造研究院 | 一种异形曲面玻璃轮廓的加工方法及装置 |
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JPH085011B2 (ja) * | 1989-07-10 | 1996-01-24 | オリンパス光学工業株式会社 | 研削装置 |
ATE88125T1 (de) * | 1990-01-24 | 1993-04-15 | Ciba Geigy Ag | Vorrichtung zum herstellen einer kontaktlinse mit insbesondere asphaerischer vorder- und/oder rueckflaeche. |
FR2681546B1 (fr) * | 1991-09-20 | 1995-12-08 | Essilor Int | Procede et machine d'usinage a commande numerique multi-axe. |
-
1994
- 1994-04-12 DE DE4412370A patent/DE4412370A1/de not_active Withdrawn
- 1994-11-02 ES ES94117272T patent/ES2107101T3/es not_active Expired - Lifetime
- 1994-11-02 EP EP94117272A patent/EP0685298B2/de not_active Expired - Lifetime
- 1994-11-02 DE DE59403792T patent/DE59403792D1/de not_active Expired - Lifetime
- 1994-11-02 AT AT94117272T patent/ATE157038T1/de not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3319719A1 (de) † | 1982-06-18 | 1983-12-29 | Essilor International (Compagnie Générale d'Optique), 94028 Créteil, Val-de-Marne | Maschine fuer die bearbeitung gekruemmter werkstueckflaechen |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004047563A1 (de) * | 2004-09-30 | 2006-04-06 | Asphericon Gmbh | Verfahren zum Polieren |
US7854645B2 (en) | 2004-09-30 | 2010-12-21 | Asphericon Gmbh | Method for polishing |
TWI410765B (zh) * | 2007-11-16 | 2013-10-01 | Hon Hai Prec Ind Co Ltd | 直軸非球面鏡面加工系統及方法 |
EP4509263A1 (de) | 2023-08-17 | 2025-02-19 | Roland Mandler GmbH & Co. KG | Verfahren zur bearbeitung einer oberfläche einer optischen linse oder eines optischen spiegels sowie vorrichtung zur bearbeitung einer oberfläche einer optischen linse oder eines optischen spiegels |
Also Published As
Publication number | Publication date |
---|---|
ES2107101T3 (es) | 1997-11-16 |
DE59403792D1 (de) | 1997-09-25 |
ATE157038T1 (de) | 1997-09-15 |
EP0685298B1 (de) | 1997-08-20 |
DE4412370A1 (de) | 1995-10-19 |
EP0685298A1 (de) | 1995-12-06 |
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