Flat diamond drill

Details Flat diamond drill Flat diamond drill

1995-06-06

1997-08-05

Eley, Timothy V.

Abrading

Rigid tool

451541, 451547, 408145, 408228, B24B 506, B23B 2720

Patent

active

056536275

ABSTRACT:
A diamond drill consists of a core and a pair of abrasive diamond tips which are joined to constitute a diamond tip and core assembly in the form of a flat plate. The diamond tips have chamfering sections for providing a cutting blade of a diameter smaller than that of a cutting blade provided by finishing blade sections thereof. The chamfering sections can be used not only for chamfering an edge of a glass plate defining an opening but for cutting a non-circular opening. In another embodiment, an abrasive diamond ring is installed on a shank and used for chamfering an edge of a glass plate defining an opening or for cutting a non-circular opening having a small corner.

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patent: 5123217 (1992-06-01), Ishikawa et al.
patent: 5354155 (1994-10-01), Adams

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