EP 1773542 A1 20070418 - METHOD OF GROOVING OR COUNTER-BEVELLING THE PERIPHERY OF AN OPHTHALMIC LENS
Title (en)
METHOD OF GROOVING OR COUNTER-BEVELLING THE PERIPHERY OF AN OPHTHALMIC LENS
Title (de)
VERFAHREN ZUM RILLEN ODER GEGENFASEN DES UMFANGS EINER OPHTHALMISCHEN LINSE
Title (fr)
PROCEDE DE RAINAGE OU DE CONTRE-BISEAUTAGE DE LA PERIPHERIE D'UNE LENTILLE OPHTALMIQUE
Publication
Application
Priority
- FR 2005001190 W 20050512
- FR 0405427 A 20040518
Abstract (en)
[origin: WO2005123340A1] The invention relates to a method of grooving or counter-bevelling the periphery of an ophthalmic lens. The inventive method is carried out in a grinding machine comprising a lens support which is equipped with means for rotating the lens (15) in relation to a first axis (A-A'), and a grinding wheel (51, 53) which is used for grooving and counter-bevelling purposes and which can be inclined with respect to said first axis (A-A'). The inventive method comprises the following steps consisting in: determining (101) a grooving or counter-bevelling profile (109), calculating (103) a single treatment angle ( alpha 0) corresponding to the profile (109), adjusting (105) the angle of inclination of the axis (C-C') of the grooving and counter-bevelling wheel (51, 53) to the value of the single treatment angle ( alpha 0), and forming (107) the groove (131) or counter-bevel in the lens (15) by means of grinding while maintaining the angle of inclination ( alpha 0) constant. The invention can be used for the grooving and counter-bevelling of high-curvature lenses.
IPC 8 full level
B24B 9/14 (2006.01); B24B 47/22 (2006.01)
CPC (source: EP KR US)
B24B 9/148 (2013.01 - EP US); B24B 13/00 (2013.01 - KR); B24B 47/22 (2013.01 - KR); B24B 47/225 (2013.01 - EP US)
Citation (search report)
See references of WO 2005123340A1
Designated contracting state (EPC)
DE ES FR IT
DOCDB simple family (publication)
FR 2870471 A1 20051125; FR 2870471 B1 20060825; CN 100513079 C 20090715; CN 1956818 A 20070502; EP 1773542 A1 20070418; KR 100868815 B1 20081114; KR 101024766 B1 20110324; KR 20070024597 A 20070302; KR 20080070780 A 20080730; US 2007224921 A1 20070927; US 7963824 B2 20110621; WO 2005123340 A1 20051229
DOCDB simple family (application)
FR 0405427 A 20040518; CN 200580016009 A 20050512; EP 05770868 A 20050512; FR 2005001190 W 20050512; KR 20067026291 A 20061214; KR 20087017350 A 20050512; US 57991205 A 20050512