EP 0820837 A1 19980128 - Optical glasses grinding machine
Title (en)
Optical glasses grinding machine
Title (de)
Maschine zum Schleifen optischer Gläser
Title (fr)
Machine de meulage de verres optiques
Publication
Application
Priority
- FR 9609171 A 19960722
- FR 9706126 A 19970520
Abstract (en)
The machine has a series of main grinding wheels (T) fixed to a shaft (2), and a blank carrier assembly designed to place the blanks (8) in contact with the grinding wheels. It has an additional grinding wheel (9), mounted freely on the end of a support (10, 19), and an actuator for the support which enables the additional wheel to be moved between a retracted position and an active position. In the active position the additional wheel's axis of rotation lies parallel to that of the shaft and the wheel is in contact with a driving disc (17) on the shaft between the main grinding wheels. It also has a mechanism for placing the blanks in contact with the additional wheel when it is in its active position. The additional grinding wheel is of smaller diameter than the main grinding wheels, and it is driven by a friction surface (20) of a plastics or elastomer material.
Abstract (fr)
Cette machine comprend un train de meules (T) calé sur un arbre (2), et un ensemble porte-ébauche (5, 7) adapté pour amener l'ébauche (8) au contact des meules. Elle comprend en outre une meule additionnelle (9) montée librement rotative sur un support (10), des moyens (11) d'actionnement du support adaptés pour déplacer la meule additionnelle (9) entre une position escamotée et une position active dans laquelle son axe de rotation (Y-Y) est parallèle à l'axe dudit arbre et dans laquelle la meule additionnelle se trouve en contact d'entraînement avec un disque d'entraînement (17) solidaire du train de meules, et des moyens pour amener l'ébauche au contact de la meule additionnelle (9) lorsque celle-ci est en position active. Application au contre-biseautage et/ou au rainage et/ou au perçage des verres optiques. <IMAGE>
IPC 1-7
IPC 8 full level
B24B 9/14 (2006.01); B24B 19/03 (2006.01); B24B 41/04 (2006.01)
CPC (source: EP US)
B24B 9/14 (2013.01 - EP US); B24B 9/146 (2013.01 - EP US); B24B 19/03 (2013.01 - EP US); B24B 41/04 (2013.01 - EP US)
Citation (search report)
- [A] EP 0350216 A2 19900110 - BERKSHIRE OPHTHALMIC LAB LTD [GB]
- [A] WO 9609914 A1 19960404 - ESSILOR INT [FR], et al
- [A] EP 0589628 A1 19940330 - BERKSHIRE OPHTHALMIC LAB LTD [GB]
- [A] FR 2689794 A1 19931015 - WERNICKE & CO GMBH [DE]
- [AD] FR 2499442 A1 19820813 - HOYA LENS CORP [JP]
- [A] DE 4214596 A1 19931104 - WERNICKE & CO GMBH [DE]
Designated contracting state (EPC)
DE ES FR IT
DOCDB simple family (publication)
EP 0820837 A1 19980128; EP 0820837 B1 20000202; DE 69701244 D1 20000309; DE 69701244 T2 20000713; ES 2142138 T3 20000401; FR 2751256 A1 19980123; FR 2751256 B1 19981231; US 5882247 A 19990316
DOCDB simple family (application)
EP 97401591 A 19970703; DE 69701244 T 19970703; ES 97401591 T 19970703; FR 9706126 A 19970520; US 88697097 A 19970702