EP2500135A1 - Poliersystem für ein Verkleidungsteil einer Uhr - Google Patents

Poliersystem für ein Verkleidungsteil einer Uhr Download PDF

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Publication number
EP2500135A1
EP2500135A1 EP11158458A EP11158458A EP2500135A1 EP 2500135 A1 EP2500135 A1 EP 2500135A1 EP 11158458 A EP11158458 A EP 11158458A EP 11158458 A EP11158458 A EP 11158458A EP 2500135 A1 EP2500135 A1 EP 2500135A1
Authority
EP
European Patent Office
Prior art keywords
axis
curvature
polishing
support
abrasive means
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.)
Withdrawn
Application number
EP11158458A
Other languages
English (en)
French (fr)
Inventor
Jean-Paul Tassetti
Gilles Derriey
Patrice Dumont
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.)
Comadur SA
Original Assignee
Comadur SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Comadur SA filed Critical Comadur SA
Priority to EP11158458A priority Critical patent/EP2500135A1/de
Priority to PCT/EP2012/052743 priority patent/WO2012123215A1/fr
Priority to EP12704793.4A priority patent/EP2686134B1/de
Priority to RU2013146017/02A priority patent/RU2590515C2/ru
Priority to US14/004,812 priority patent/US9914195B2/en
Priority to CN201280013601.5A priority patent/CN103442847B/zh
Priority to JP2013558350A priority patent/JP5959544B2/ja
Publication of EP2500135A1 publication Critical patent/EP2500135A1/de
Withdrawn legal-status Critical Current

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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
    • B24B13/04—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses involving grinding wheels controlled by gearing
    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/06—Devices for shaping or setting watch glasses

Definitions

  • the invention relates to a system for polishing a trim piece for a timepiece and in particular the concave surface of such a piece.
  • the object of the present invention is to overcome all or part of the disadvantages mentioned above by proposing a piece-to-piece polishing system which does not deform the blanks and allows improved polishing of complex concave surfaces with a very low scrap rate.
  • the invention relates to a system for polishing a concave surface of a trim piece for a timepiece
  • a fixing device comprising a support which carries said workpiece, a grinding device comprising abrasive means rotatably mounted along a first axis and intended to polish said workpiece according to a first curvature
  • the fixing device also comprises means for moving the support so that the support reciprocates along a second axis and in that the contact surface of the abrasive means is curved to polish said workpiece in a second curvature in addition to said first.
  • the polishing is carried out piece by piece by contact of the workpiece against the abrasive means.
  • the back-and-forth movement of the support then forces the part to follow the curved contact surface of the abrasive means.
  • the polishing is therefore performed by moving the pieces one by one against the abrasive means rotatably mounted along a fixed axis which allows a very low scrap rate by avoiding the degradation of the concave surface roughened before polishing.
  • the invention relates to a piece of clothing of a timepiece such as an ice, a case or a dial based on crystallized alumina such as sapphire, corundum or ruby.
  • the invention relates to new manufacturing systems for roughing and polishing such pieces of complex shape.
  • a timepiece such as an ice, a case or a dial based on crystallized alumina such as sapphire, corundum or ruby.
  • the invention relates to new manufacturing systems for roughing and polishing such pieces of complex shape.
  • Other applications are also conceivable, such as optics, tableware or electronics.
  • a manufacturing system 1 has been developed in order to produce trim parts 3 comprising surfaces whose curvatures C 1 , C 2 are concave.
  • the manufacturing system 1 comprises a fixing device 5 and a machining device 7.
  • the fixing device 5 comprises a drum 11 rotatably mounted along a first axis A 1 and carrying at least one blank 3 'of the future part 3.
  • the drum 11 is a ring having a faceted internal wall, that is to say provided with successive planes P x .
  • each successive plane P x receives a blank 3 'which can be fixed, for example, by gluing.
  • the machining device 7 comprises abrasive means 13 which are rotatably mounted along a second axis A 2 and which are intended to machine each blank 3 '.
  • the abrasive means 13 are moved in the hollow of the drum 11 in the form of a ring.
  • the abrasive means 13 presented to the figure 1 are formed by a conventional grinding wheel, that is to say without any particular shape of its contact zone.
  • the abrasive means 13 may be different and, for example, take the form of a curved or conical shoe.
  • the machining device 7 comprises displacement means 15 of the second axis A 2 so that the latter is movably mounted in a curved director to selectively form a second curvature C 2 to each blank 3 '. It is therefore clear that the manufacturing system 1 makes it possible to form first and second curvatures C 1 , C 2 concave.
  • the displacement means 15 may be, without limitation, formed by an actuator moved back and forth against the profile of a fixed cam corresponding to the second curvature C 2 or, for example, a controller programmed to move along said second curvature.
  • the first curvature C 1 is generated perpendicularly to the axis A 1 by the radius extending between the axis A 1 and the contact zone between the abrasive means 13 and each blank 3 '. Because the drum 11 is rotated along the axis A 1 , each blank 3 'is thus transversely excavated along a single radius forming the first curvature C 1 concave.
  • each blank 3 ' is hollowed longitudinally along a curved director forming the second curvature C 2 concave.
  • the director curve of the displacement means 15 may be symmetrical or not to form the second curvature C 2 in one or more rays.
  • the director curve of the displacement means 15 may be symmetrical or not to form the second curvature C 2 in one or more rays.
  • the director curve of the displacement means 15 may be symmetrical or not to form the second curvature C 2 in one or more rays.
  • the resulting blank 3 may then comprise one of these faces 12, 14 with a longitudinal concave surface comprising a curvature C 1 and a transverse concave surface comprising a curvature C 2 .
  • first axis A 1 and the second axis A 2 are perpendicular in order to cross the machining lines. This feature advantageously facilitates the subsequent polishing of the trim pieces 3.
  • a polishing system 21 has been developed for parts of type 3 'illustrated in FIG. figure 4 , that is to say which has surfaces whose curvatures C 1 , C 2 are concave. As illustrated in figure 2 , the polishing system 21 comprising a fixing device 25 and a grinding device 27.
  • the grinding device 27 comprising abrasive means 33 rotatably mounted along an axis A 3 and intended to polish the part 3 'according to a first curvature C 1 .
  • the contact surface of the abrasive means 33 comprises a curved surface for polishing the piece 3 'according to a second curvature C 2 in addition to said first C 1 .
  • the abrasive means 33 presented to the figure 2 are preferably formed by a disc whose grinding surface comprises a convex surface, for example of metal, which is regularly coated with a polishing liquid.
  • the fixing device 25 comprises a support 31 which carries the piece 3 'to be polished.
  • the fixing device 25 further comprises means 35 for moving the support 31 so that it reciprocates along an axis A 4 .
  • the axis A 4 is substantially perpendicular to the axis A 3 of rotation of the abrasive means 33.
  • the displacement means 35 allow the blank 3 'of the piece 3 both to be pressed and to move in order to force the friction of the abrasive means 33 against each blank 3' for the purpose of selectively polishing them according to the second curvature C 4 . It is therefore understood that the polishing system 21 makes it possible to polish concave first and second curvatures C 3 , C 4 .
  • the displacement means 35 make it possible to press and move the blank 3 'of the part 3 with respect to the abrasive means 33.
  • the displacement means 35 will be better understood in relation with the Figures 5 to 8 .
  • the displacement means 35 are formed by a rotary actuator 32 driving a crank 34 substantially discoidal which is connected off-center to a rod 36 integral with the axis A 4 to form the desired movement B back and forth.
  • the connecting rod 36 in the example illustrated in Figures 5 to 8 comprises two shafts 37 and 38.
  • the shaft 37 thus connects the pin 39 of the crank 34, which is off-center with respect to the axis of the actuator 32, to the shaft 38.
  • the latter pivotally mounted according to FIG. A axis 4 connects the shaft 37 and the support 31.
  • An illustration of the movement B is shown in FIGS. Figures 6 to 8 .
  • the displacement means 35 can be seen in one of the extreme positions of the movement B.
  • the two shafts 37, 38 of the connecting rod 36 form an acute angle with respect to each other. It is therefore understood that when the crank 34 prints a rotation in the retrograde direction illustrated in FIG. figure 6 this causes a trigonometric rotation of the arm 38 and, incidentally, that of the support 31 relative to the axis A4.
  • the displacement means 35 can be seen in a substantially central position of the movement B. In this position, the two shafts 37, 38 of the connecting rod 36 form a substantially straight angle relative to each other. It is therefore understood that if the crank 34 continues its rotation in the retrograde direction illustrated in FIG. figure 7 this always causes a trigonometric rotation of the arm 38 and, incidentally, that of the support 31 relative to the axis A4.
  • the displacement means 35 are furthermore mounted on a set 41 of carriages selectively displaceable longitudinally C, transversely D and vertically E.
  • This thus makes it possible not only to finely position the support 31 with respect to the abrasive means but also to obtain the desired veneer.
  • the longitudinal carriage is controlled according to a movement C greater than the interval between the blank 3 'of the piece 3 to be polished and the abrasive means 33.
  • polishing is performed piece by piece by plating the blank 3 'against the abrasive means 33, the back and forth movement of the support 31 forcing the blank 3' to follow the curved contact surface abrasive means 33.
  • the polishing is therefore performed by moving a blank 3 'piece by piece against abrasive means 33 rotatably mounted along a fixed axis A 3 which allows a very low scrap rate.
  • Pieces 3 may optionally also be subjected to a final step of chemical superpolishing to further improve their appearance.
  • abrasive means 33 may be different and, for example, take the form of a curved or conical shoe.
  • displacement means 35 may be of a different nature to obtain the same type of veneer and reciprocating motions.
EP11158458A 2011-03-16 2011-03-16 Poliersystem für ein Verkleidungsteil einer Uhr Withdrawn EP2500135A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP11158458A EP2500135A1 (de) 2011-03-16 2011-03-16 Poliersystem für ein Verkleidungsteil einer Uhr
PCT/EP2012/052743 WO2012123215A1 (fr) 2011-03-16 2012-02-17 Système de polissage d'une pièce d'habillage pour une pièce d'horlogerie
EP12704793.4A EP2686134B1 (de) 2011-03-16 2012-02-17 Poliersystem für ein teil eines uhrengehäuses
RU2013146017/02A RU2590515C2 (ru) 2011-03-16 2012-02-17 Система полирования внешних деталей для часовых изделий
US14/004,812 US9914195B2 (en) 2011-03-16 2012-02-17 System of polishing external pieces for a timepiece
CN201280013601.5A CN103442847B (zh) 2011-03-16 2012-02-17 用于抛光钟表外部元件的抛光系统
JP2013558350A JP5959544B2 (ja) 2011-03-16 2012-02-17 時計用外部部品の研磨システム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11158458A EP2500135A1 (de) 2011-03-16 2011-03-16 Poliersystem für ein Verkleidungsteil einer Uhr

Publications (1)

Publication Number Publication Date
EP2500135A1 true EP2500135A1 (de) 2012-09-19

Family

ID=44227484

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11158458A Withdrawn EP2500135A1 (de) 2011-03-16 2011-03-16 Poliersystem für ein Verkleidungsteil einer Uhr
EP12704793.4A Active EP2686134B1 (de) 2011-03-16 2012-02-17 Poliersystem für ein teil eines uhrengehäuses

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP12704793.4A Active EP2686134B1 (de) 2011-03-16 2012-02-17 Poliersystem für ein teil eines uhrengehäuses

Country Status (6)

Country Link
US (1) US9914195B2 (de)
EP (2) EP2500135A1 (de)
JP (1) JP5959544B2 (de)
CN (1) CN103442847B (de)
RU (1) RU2590515C2 (de)
WO (1) WO2012123215A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747339A (en) * 1954-01-18 1956-05-29 Bausch & Lomb Lens grinding machine
FR1233568A (fr) * 1959-04-07 1960-10-12 Comm Ouvriers Lunetiers Soc In Machine à doucir
DE2848772A1 (de) * 1977-11-10 1979-05-17 Jenoptik Jena Gmbh Schleifmaschine, insbesondere fuer die herstellung torischer linsen
EP1645919A1 (de) * 2004-10-11 2006-04-12 Fuji Crystal Manufactory Ltd. Gewölbtes Uhrglas

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU368012A1 (ru) * 1969-03-28 1973-01-26 Устройство для обработки поверхностей оптических деталей
SU528181A1 (ru) * 1973-07-06 1976-09-15 Предприятие П/Я Г-4671 Способ обработки асферических поверхностей
US4038783A (en) * 1976-09-03 1977-08-02 Leon Rosenthal Method and apparatus for generating optic lenses
US4510717A (en) * 1982-12-16 1985-04-16 Coburn Optical Industries, Inc. Lens finishing apparatus
JPS60242948A (ja) * 1984-05-17 1985-12-02 Matsushita Electric Ind Co Ltd 面取り加工方法
US5720649A (en) * 1995-12-22 1998-02-24 Gerber Optical, Inc. Optical lens or lap blank surfacing machine, related method and cutting tool for use therewith
CH690873A5 (fr) * 1996-10-04 2001-02-15 Stettler Hans Ag Glace de montre.
CN2278561Y (zh) * 1997-03-14 1998-04-15 王斌武 圆轮式内散镜片精磨抛光机
RU2127182C1 (ru) * 1998-02-11 1999-03-10 Государственное научно-производственное объединение "Оптика" Способ изготовления оптических линз
CN2365011Y (zh) * 1999-05-05 2000-02-23 胡秀 散光弧摆精磨抛光机
DE60327957D1 (de) * 2002-01-09 2009-07-30 Hoya Corp Schleifwerkzeug
EP2228694A1 (de) 2009-03-12 2010-09-15 Stettler Sapphire AG Verfahren und Vorrichtung zum Schleifen von Uhrengläsern

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747339A (en) * 1954-01-18 1956-05-29 Bausch & Lomb Lens grinding machine
FR1233568A (fr) * 1959-04-07 1960-10-12 Comm Ouvriers Lunetiers Soc In Machine à doucir
DE2848772A1 (de) * 1977-11-10 1979-05-17 Jenoptik Jena Gmbh Schleifmaschine, insbesondere fuer die herstellung torischer linsen
EP1645919A1 (de) * 2004-10-11 2006-04-12 Fuji Crystal Manufactory Ltd. Gewölbtes Uhrglas

Also Published As

Publication number Publication date
EP2686134A1 (de) 2014-01-22
JP2014512975A (ja) 2014-05-29
CN103442847B (zh) 2017-02-08
JP5959544B2 (ja) 2016-08-02
EP2686134B1 (de) 2014-10-22
US9914195B2 (en) 2018-03-13
RU2013146017A (ru) 2015-04-27
WO2012123215A1 (fr) 2012-09-20
RU2590515C2 (ru) 2016-07-10
CN103442847A (zh) 2013-12-11
US20140004777A1 (en) 2014-01-02

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