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US 6,561,738 B1Granted
Spectacles lens boring jig positioning device
AssigneeHoya Corporation
InventorsHakaru Fujita, Yukihiro Izumitani
Life of this patent
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Abstract
The present invention accurately positions and affixes by a simple device and operations a drilling jig for processing non-through-holes from the edge of an edged spectacle lens toward the inside of the lens. The above-mentioned lens is held and positioned using a blocking jig, which is attached to an edged spectacle lens, and, in addition, a drilling jig is positioned using a feed-set guide base and guide stopper.
Claims7
A positioning device for positioning a spectacle lens drilling jig, the device comprising:
- a lens holder which holds an edged spectacle lens affixed to a blocking jig, while determining the position in the direction of rotation in accordance with said blocking jig;
- a biaxial free moving device which freely moves said lens holder up-down and right-left, respectively, relative to a lens surface;
- a jig guide base having a guide surface on which a small block-shaped drilling jig is placed in a freely moving manner parallel to the guide surface;
- a guide stopper, which has a guide wall surface formed as the surface for intersecting with said guide surface, and which comes in contact with and positions said drilling jig, which is guided on said guide surface by this guide wall surface;
- and
- a feeder which feeds said jig guide base, together with said stopper, in the fore and aft direction relative to said lens surface.
3 more elements
Dependencies are inferred from the claim text.