EP 0159383 B1 19871111 - MACHINE FOR GRINDING TORIC SURFACES OF OPTICAL LENSES
Title (en)
MACHINE FOR GRINDING TORIC SURFACES OF OPTICAL LENSES
Publication
Application
Priority
EP 84104714 A 19840426
Abstract (en)
[origin: ES8605174A1] A machine for grinding of toric surfaces on optic lenses. A holder is provided for a lens (L1) and is pivotally supported in a carriage of a compound support of two carriages. A swivel arm is secured to a pivot of a holder. The swivel arm is pivotal about a movable bearing. A holder for a grinding spindle with cup tool thereon is supported on the machine frame by means of a bearing ring. During a movement of the compound carriage, the workpiece holder moves due to the guiding of the swivel arm on a circular path, the radius of which determines the base curve of the torus surface. By supporting the weight of the holder through a compound support on the machine frame, bending stresses of the swivel arm are avoided, through which a high precision machining operation is achieved.
IPC 1-7
IPC 8 full level
B24B 13/04 (2006.01)
CPC (source: EP US)
B24B 13/04 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0159383 A1 19851030; EP 0159383 B1 19871111; DE 3467317 D1 19871217; ES 542581 A0 19860316; ES 8605174 A1 19860316; US 4653233 A 19870331
DOCDB simple family (application)
EP 84104714 A 19840426; DE 3467317 T 19840426; ES 542581 A 19850425; US 72652785 A 19850424