Patent ID: 6672944
Filing Date: 2004-01-06
Classification: B24B

Abstract:
Method for setting initial position of grinding work apparatus comprising the steps of:holding, by lens rotating shafts, a measurement standard having a predetermined shape; moving grind stones for ditch excavation and chamfering to a predetermined position within a trace line of said lens rotating shafts; said lens rotating shafts being moved along a normal line of said grind stones in order for said measurement standard to contact with one of a ditch excavation grind stone or a chamfering grind stone of said grind stones for ditch excavation and chamfering; detecting a contact of said measurement standard with one of said ditch excavation grind stone or said chamfering grind stone by a contact detecting means; obtaining a moving distance of said lens rotating shafts when the contact detecting means detects the contact; and obtaining and setting an initial position of the lens rotating shafts on a basis of the moving distance and a dimension of said measurement standard.