FR2433489A1 - Template for cutting periphery of spectacle lenses - where slots in template blank prevent breakage of cutting tool by cut scrap - Google Patents

Template for cutting periphery of spectacle lenses - where slots in template blank prevent breakage of cutting tool by cut scrap

Info

Publication number
FR2433489A1
FR2433489A1 FR7918207A FR7918207A FR2433489A1 FR 2433489 A1 FR2433489 A1 FR 2433489A1 FR 7918207 A FR7918207 A FR 7918207A FR 7918207 A FR7918207 A FR 7918207A FR 2433489 A1 FR2433489 A1 FR 2433489A1
Authority
FR
France
Prior art keywords
template
blank
cutting
slots
periphery
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.)
Granted
Application number
FR7918207A
Other languages
French (fr)
Other versions
FR2433489B3 (en
Inventor
Lutz Gottschald
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.)
Wernicke and Co GmbH
Original Assignee
Wernicke and Co GmbH
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 Wernicke and Co GmbH filed Critical Wernicke and Co GmbH
Publication of FR2433489A1 publication Critical patent/FR2433489A1/en
Application granted granted Critical
Publication of FR2433489B3 publication Critical patent/FR2433489B3/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Eyeglasses (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Template for cutting the periphery of spectacle lenses. The finished template is made from a bank, which is clamped on a turntable with a smaller dia. than the blank so stamping, cutting or milling can be used to form the periphery of the template. The blank is provided with >=1 radial slot. which extends inwards from the edge of the blank to or inside the periphery of the template. When the blank is provided with several slots, e.g. three, an equal angular distance is pref. used between the slots. esp. a distance of >=90 degrees. The stamping-milling- or cutting-tool pref. enters the blank at a point diametrically opposite a slot. Process uses >=1 slots so the scrap material forms several ring segments, which fall off the blank without damaging the tool.
FR7918207A 1978-08-19 1979-07-13 Template for cutting periphery of spectacle lenses - where slots in template blank prevent breakage of cutting tool by cut scrap Granted FR2433489A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2836438A DE2836438C2 (en) 1978-08-19 1978-08-19 Raw template for producing a finished template that determines the circumference of a spectacle lens and using the raw template

Publications (2)

Publication Number Publication Date
FR2433489A1 true FR2433489A1 (en) 1980-03-14
FR2433489B3 FR2433489B3 (en) 1981-04-30

Family

ID=6047503

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918207A Granted FR2433489A1 (en) 1978-08-19 1979-07-13 Template for cutting periphery of spectacle lenses - where slots in template blank prevent breakage of cutting tool by cut scrap

Country Status (5)

Country Link
JP (1) JPS5532098A (en)
DE (1) DE2836438C2 (en)
FR (1) FR2433489A1 (en)
IT (1) IT1111560B (en)
SE (1) SE429436B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2892041A1 (en) * 2005-10-14 2007-04-20 Fwd Sarl Spectacle lens template machining unit has template support forming rotary plate and mobile machining tool moving in plane perpendicular to plate's axis of rotation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3804133A1 (en) * 1988-02-11 1989-08-17 Wernicke & Co Gmbh Method and arrangement for shaping a spectacle glass
EP0365691B1 (en) * 1988-04-27 1997-01-02 Shin Meiwa Industry Co., Ltd. Harness manufacturing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2892041A1 (en) * 2005-10-14 2007-04-20 Fwd Sarl Spectacle lens template machining unit has template support forming rotary plate and mobile machining tool moving in plane perpendicular to plate's axis of rotation

Also Published As

Publication number Publication date
SE429436B (en) 1983-09-05
SE7903730L (en) 1980-02-20
JPS5532098A (en) 1980-03-06
IT7921043A0 (en) 1979-03-16
DE2836438C2 (en) 1982-11-18
DE2836438A1 (en) 1980-03-06
IT1111560B (en) 1986-01-13
FR2433489B3 (en) 1981-04-30

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