| 摘要 |
<p>An initial position setting method for a grinding device that comprises a grinding stone (11), lens holding shafts (14, 14) capable of moving toward and away from each other along the normal direction of the grinding stone (11), a groove cutting grinding stone (23) and chamfering grinding stones (24, 25) that are movable to predetermined positions, motors (M2, P1, 55) for effecting rotation, toward-away movement, etc. of the lens holding shafts (14, 14), a driving mechanism (30) for moving the groove cutting grinding stone (23) and chamfering grinding stones (24, 25), a photosensor (57) for detecting that a work-subject lens held by the lens holding shaft (14, 14) comes into contact with the grinding stone (11), the method comprising the steps of holding a measuring prototype (70) of predetermined shape by the lens holding shafts (14, 14), moving the groove cutting grinding stone (23) and chamfering grinding stones (24, 25) to predetermined positions, moving the lens holding shafts (14, 14) until the measuring prototype (70) comes into contact with the groove cutting grinding stone (23) or chamfering grinding stones (24, 25), calculating the amount of movement of the lens holding shafts (14, 14) at this time, and effecting initial setting of the amount of movement of the groove cutting grinding stone or chamfering grinding stones on the basis of the calculated amount of movement and the size of the measuring prototype (70).</p> |
