EP0035317A1 - Procédé pour la fabrication d'articles en forme de lentille - Google Patents

Procédé pour la fabrication d'articles en forme de lentille Download PDF

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Publication number
EP0035317A1
EP0035317A1 EP81300173A EP81300173A EP0035317A1 EP 0035317 A1 EP0035317 A1 EP 0035317A1 EP 81300173 A EP81300173 A EP 81300173A EP 81300173 A EP81300173 A EP 81300173A EP 0035317 A1 EP0035317 A1 EP 0035317A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
machining
work
machinable piece
machinable
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Withdrawn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
EP81300173A
Other languages
German (de)
English (en)
Inventor
Yoshiaki Nagaura
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.)
Individual
Original Assignee
Individual
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
Priority claimed from JP2759880A external-priority patent/JPS56123114A/ja
Priority claimed from JP5925580A external-priority patent/JPS56155580A/ja
Priority claimed from JP12088180A external-priority patent/JPS5744313A/ja
Application filed by Individual filed Critical Individual
Publication of EP0035317A1 publication Critical patent/EP0035317A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention realtes to a method for the manufacture of lens-like articles and the like, and more particularly to a manufacturing method which permits fabrication of lens-like articles or the like with various diameters ranging from a very small diameter to a large diameter and lens-like articles and the like obtained by the manufacturing method.
  • Figure 1 is a front view of this previously proposed manufacturing apparatus, in which reference numeral 1 indicates a chassis; 2 and 3 designate workpiece holders; and 4 identifies a spindle.
  • reference numeral 1 indicates a chassis; 2 and 3 designate workpiece holders; and 4 identifies a spindle.
  • a grinding plate 43 and a polishing plate 44 are attached to the spindle 4, as shown in Figure 2, and a disc-shaped workpiece 100 of a lens- shaped article or the like is inserted into a chuck 25 of the holder 3 which is opened at a position spaced apart from the spindle 4.
  • a slide tube 23 in the direction B by activating a cylinder 35 the slide tube 23 is brought into engagement with respective chuck members 24 to resiliently deform them, thereby closing the chuck 25 to hold the outer periphery of the workpiece 10Q.
  • the spindle 4 is moved to bring the grinding plate 43 to the solid-line position in Figure 2 and is then driven, and the work holder 3 is moved forward by a cylinder 32 or 34, while being driven, to press the work 100 against the grinding plate 43 as indicated by the chain line in Figure 2, by which one side of the workpiece is ground spherical. Then, the spindle 4 is retracted to bring the grinding plate 43 and the polishing plate 44 to the chain-line positions in Figure 2, where the spherical surface of the workpiece 100 is subject to polish finish by the polishing plate 44. Next, the work holder 3 is moved back in the direction B' and then stopped, and at the same time, the spindle 4 is also brought back to get out of the way of the work holder 3.
  • a machinable piece 101 of a material which has substantially the same machinability as the workpiece 100 is stuck, as by an adhesive binder, to the worked surface of the workpiece 100, as shown in Figure 3(a). It is desirable for the machinable surface of the machinable piece 101 to be of the same material as the workpiece 100. Then, the surface of the machinable piece 101 is ground spherical, as shown in Figure 3(b), and thereafter the work holder 3 is moved forward to position the worked surface of the machinable piece 101 adjacent to a suction pipe 5A of the work holder 2, as depicted in Figure 3(c).
  • the slide tube 23 is moved in the direction B' to open the chuck members 23 and the work holder 3 is moved back, thus completing the transfer of the workpiece 100. In this case, the transfer of the work is carried out without changing the center axis for working.
  • the spindle 4 is moved forward to the solid-line.position in Figure 2 and, at the same time, the suction pipe 5A is also moved forward, by a cylinder 15 or 17, in the direction A while being rotated, thereby working the other side of the workpiece 100 in the same manner as described previously.
  • the machinable piece 101 is also ground , as shown in Figure 3(d).
  • the grinding is stopped and the attraction by the suction pipe 5A is released and then the ground work 102 is disassembled from the machinable piece 101, finishing the grinding operation. In this way, a small-diameter article is obtained by working a large- diameter member which can easily be worked with high accuracy; it is possible to easily fabricate high precision products of desired diameters.
  • FIG 4 is a front view of apparatus for carrying out the present invention, which is simple-structured in that the work holder 2 and the associated parts in the apparatus of Figure 1 are removed i.e. a single holding device is provided to hold the workpiece during all of the machining operations.
  • reference numeral 201 indicates a chassis; 202 designates .a single work holder; and 203 identifies a spindle.
  • the working procedure of this apparatus is as follows:
  • a first machining operation is carried out in which one side of a workpiece 100 held by a chuck 204 of a work holder 202 is ground spherical by tools mounted on the spindle 203, such as a grinding plate and a polishing plate, in the same manner as in the prior proposal.
  • a machinable piece 101 Prior to the carrying out of a second machining operation on the other side of the workpiece 100, a machinable piece 101 is stuck, as by an adhesive binder , to the ground surface of the work 100 , as shown in Figure 5(a) so as to form a composite article which facilitates handling and further machining of the workpiece.
  • the composite work assembly is removed from the chuck 204, reversed and mounted again on the work holder 202, with the machinable piece 101-held by the chuck 204, as shown in Figure 5(b), for grinding the other side of the workpiece 100 into a spherical configuration.
  • the machinable piece 101 is also ground, as shown in Figure 5(c). This is shown on an enlarged scale in Figure 6.
  • an adhesive binder for attaching the machinable piece 101 to the work 100 is a conductive one.
  • a conductive machinable piece 101 is mounted on the ground surface by means of a conductive adhesive binder and that after grinding the other surface, leads are attached to the machinable piece 101 and the other surface as shown in Figure 7(c).
  • reference numerals 205, 206 and 207 indicate cylinders; 208 designates a slide tube; and 209 identify chuck members. These elemehts have .the same construction and operation as in the prior proposal.
  • a grinding tool 210 which is provided on the apparatus (though not shown in detail) is moved forward in the direction of the arrow as shown in Figure 6, performing the edge planing of the work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP81300173A 1980-03-04 1981-01-15 Procédé pour la fabrication d'articles en forme de lentille Withdrawn EP0035317A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2759880A JPS56123114A (en) 1980-03-04 1980-03-04 Manufacture of quartz oscillating element
JP27598/80 1980-03-04
JP5925580A JPS56155580A (en) 1980-05-01 1980-05-01 Manufacture of piezoelectric element or the like
JP59255/80 1980-05-01
JP120881/80 1980-08-28
JP12088180A JPS5744313A (en) 1980-08-28 1980-08-28 Manufacture of piezoelectric element or the like

Publications (1)

Publication Number Publication Date
EP0035317A1 true EP0035317A1 (fr) 1981-09-09

Family

ID=27285864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81300173A Withdrawn EP0035317A1 (fr) 1980-03-04 1981-01-15 Procédé pour la fabrication d'articles en forme de lentille

Country Status (2)

Country Link
EP (1) EP0035317A1 (fr)
CA (1) CA1186141A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141541A2 (fr) * 1983-10-24 1985-05-15 Emi-Mec Limited Procédé de fabrication d'une lentille de contact et dispositif pour la mise en oeuvre du procédé
EP0732172A1 (fr) * 1995-03-16 1996-09-18 Menicon Co., Ltd. Procédé et appareil pour la production de lentilles
US5785580A (en) * 1994-11-17 1998-07-28 Coburn Optical Industries, Inc. Compression sleeve opthalmic lens chuck
EP4219518A2 (fr) 2015-04-06 2023-08-02 Taizhou Huifeng Hetai Biotechnology Co. Ltd Bioconjugués de composés hétérocycliques

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023800A2 (fr) * 1979-08-02 1981-02-11 Yoshiaki Nagaura Fabrication d'un article comprenant des surfaces opposées courbes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023800A2 (fr) * 1979-08-02 1981-02-11 Yoshiaki Nagaura Fabrication d'un article comprenant des surfaces opposées courbes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0141541A2 (fr) * 1983-10-24 1985-05-15 Emi-Mec Limited Procédé de fabrication d'une lentille de contact et dispositif pour la mise en oeuvre du procédé
EP0141541A3 (en) * 1983-10-24 1986-12-03 Contact Lens Supplies Limited Method of manufacturing a contact lens and apparatus for use in the method
US5785580A (en) * 1994-11-17 1998-07-28 Coburn Optical Industries, Inc. Compression sleeve opthalmic lens chuck
EP0732172A1 (fr) * 1995-03-16 1996-09-18 Menicon Co., Ltd. Procédé et appareil pour la production de lentilles
US5737057A (en) * 1995-03-16 1998-04-07 Menicon Co., Ltd. Ocular lens fabrication method and ocular lens fabrication apparatus
EP4219518A2 (fr) 2015-04-06 2023-08-02 Taizhou Huifeng Hetai Biotechnology Co. Ltd Bioconjugués de composés hétérocycliques

Also Published As

Publication number Publication date
CA1186141A (fr) 1985-04-30

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19820226

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Effective date: 19830804