GB1347828A - Lens cutting and bevel-edging machine - Google Patents

Lens cutting and bevel-edging machine

Info

Publication number
GB1347828A
GB1347828A GB3348372A GB3348372A GB1347828A GB 1347828 A GB1347828 A GB 1347828A GB 3348372 A GB3348372 A GB 3348372A GB 3348372 A GB3348372 A GB 3348372A GB 1347828 A GB1347828 A GB 1347828A
Authority
GB
United Kingdom
Prior art keywords
blank
shaft
carriage
edge
tool
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
GB3348372A
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.)
Gentex Corp
Original Assignee
Gentex Corp
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 Gentex Corp filed Critical Gentex Corp
Publication of GB1347828A publication Critical patent/GB1347828A/en
Expired legal-status Critical Current

Links

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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/14—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of optical work, e.g. lenses, prisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Milling Processes (AREA)

Abstract

1347828 Grinding; milling lenses GENTEX CORP 18 July 1972 [6 Aug 1971] 33483/72 Headings B3D and B3K Apparatus for cutting a lens blank 12 to a predetermined shape by removing material from the edge of the blank while forming the edge to have a cross-section of predetermined configuration, comprising a tool 130 rotatable about an axis, a lens blank support 168 mounted for rotary movement around an axis generally parallel to the tool axis, means for rotating the support, and means for moving the support relative to the tool in rectilinear directions generally parallel and generally transverse to the axis. The lens blank to be shaped is formed to a spherical curvature, is of plastics material, and is clamped on the spherical surface of the support 168 which, together with a cam 14 of the desired shape of the blank, are mounted on the upper end of a shaft 100 rotatable and axially movable in bearings 92, 94 in a carriage 42. Rotation of the shaft at a slow speed, say 2 r.p.m. is affected by gearing 124, 126 from a motor 120 mounted on the carriage. The carriage is slidably mounted on rods 54 secured to a rectangular housing 24 resting on a base plate 22. A cable 64 secured at one end to the carriage and at the other end to a weight 62 urges the carriage to the left, as seen in Fig. 3, to engage the cam 14 with a follower 224 adjustable by a screw 232 and the edge of the blank with a grinding or cutting tool 130 having a surface 132 shaped to provide the desired crosssection on the edge of the blank. In order that the surface may follow the rise and fall of the edge of the blank as the distance between the axes of the tool and blank vary under the action of the cam 14, the shaft 100 is axially moved under the control of a follower 106 on the lower end of the shaft engaging the spherical surface 108 of the same radius as the lens blank on a cam 110 mounted in the housing 24. The lens blank is clamped to the support 168 by a clamp 188 having a thrust washer 194 engaged by a ball 198, in turn engaged by a head 196 on the lower end of a screw 184 in a toggle linkage carried by an upright 174 of a member 140 mounted by radial and thrus tbearings 152, 156 on the shaft 100. During rotation of the shaft, rotation of the member 140 is prevented by a roller 212 engaging a side 40 of the housing 24.
GB3348372A 1971-08-06 1972-07-18 Lens cutting and bevel-edging machine Expired GB1347828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16963471A 1971-08-06 1971-08-06

Publications (1)

Publication Number Publication Date
GB1347828A true GB1347828A (en) 1974-02-27

Family

ID=22616514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3348372A Expired GB1347828A (en) 1971-08-06 1972-07-18 Lens cutting and bevel-edging machine

Country Status (8)

Country Link
US (1) US3769755A (en)
JP (1) JPS534277B2 (en)
AU (1) AU453085B2 (en)
CA (1) CA950201A (en)
DE (1) DE2234454A1 (en)
FR (1) FR2149925A5 (en)
GB (1) GB1347828A (en)
IT (1) IT963585B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117287A (en) * 1981-10-07 1983-10-12 Victor Freeman Lens edge grinding machine
CN111070021A (en) * 2019-12-23 2020-04-28 江苏新事通光电科技有限公司 Polishing and cleaning equipment for lens production

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397918A1 (en) * 1977-07-20 1979-02-16 Essilor Int OPHTHALMIC LENS OVERFLOWING AND BEVELING MACHINE
FR2543039B1 (en) * 1983-03-22 1985-08-09 Essilor Int METHOD FOR BEVELING AN OPHTHALMIC LENS, AND CORRESPONDING AUTOMATIC GRINDING MACHINE
FR2565147B1 (en) * 1984-06-04 1988-04-01 Essilor Int GRINDING MACHINE FOR OPHTHALMIC LENS, PARTICULARLY FOR TRIMMING AND / OR BEVELING OR GROOVING THEREOF
US4616544A (en) * 1984-06-18 1986-10-14 Kabushiki Kaisha Kato Kogei Cutting machine for preparing models for spectacle lenses
CA1227922A (en) * 1984-06-18 1987-10-13 Georges Zoueki Multipurpose apparatus for drilling, engraving and carving ophtalmic lenses
FR2689794B1 (en) * 1992-04-14 1995-02-17 Wernicke & Co Gmbh Machine to machine the edge of a spectacle lens.
IT230613Y1 (en) * 1993-07-27 1999-06-09 Cms Service Srl ORGANIC LENS SHAPING AND MILLING MACHINE FOR SUNGLASSES AND PROTECTIVE SUNGLASSES
US5482495A (en) * 1993-09-29 1996-01-09 Matsushita Electric Industrial Co., Ltd. Apparatus for polishing a spherical surface
MD635G2 (en) * 1996-04-26 1997-08-31 Государственный Университет Молд0 Remedy for mulbery tree leaves treatment
US6129435A (en) * 1998-04-09 2000-10-10 Nike, Inc. Decentered protective eyewear
US7389543B2 (en) * 2004-06-30 2008-06-24 Nike, Inc. Optically decentered face shield
JP5238322B2 (en) * 2008-03-28 2013-07-17 株式会社トプコン Ball shape measuring device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254253A (en) * 1915-08-28 1918-01-22 Frank B Marchant Lens-grooving machine.
GB656690A (en) * 1948-10-25 1951-08-29 William Adams Taig Improvements in apparatus for grinding the bevel edge of spectacle and other lenses
US2674068A (en) * 1949-08-20 1954-04-06 American Optical Corp Bevel edging machine
US3121979A (en) * 1961-05-24 1964-02-25 Coburn Mfg Company Inc Bevel edge grinder
US3119206A (en) * 1962-11-14 1964-01-28 American Optical Corp Lens edging machines
US3315415A (en) * 1964-08-11 1967-04-25 Edgar J Schroth Bevel edging device
US3332172A (en) * 1964-11-16 1967-07-25 A I T Machine Co Inc Automatic edger
US3673738A (en) * 1971-03-17 1972-07-04 Ait Ind Inc Edge control device for grinding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117287A (en) * 1981-10-07 1983-10-12 Victor Freeman Lens edge grinding machine
CN111070021A (en) * 2019-12-23 2020-04-28 江苏新事通光电科技有限公司 Polishing and cleaning equipment for lens production
CN111070021B (en) * 2019-12-23 2021-08-10 湖南冠导光电有限责任公司 Polishing and cleaning equipment for lens production

Also Published As

Publication number Publication date
CA950201A (en) 1974-07-02
AU453085B2 (en) 1974-09-19
DE2234454A1 (en) 1973-02-22
US3769755A (en) 1973-11-06
AU4383472A (en) 1974-01-03
IT963585B (en) 1974-01-21
JPS4826152A (en) 1973-04-05
JPS534277B2 (en) 1978-02-15
FR2149925A5 (en) 1973-03-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees