Drill with trimming attachment

Details Drill with trimming attachment Drill with trimming attachment

1991-12-26

1993-05-18

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

408191, 408713, B23B 5110

Patent

active

052116352

ABSTRACT:
A drill and trimming attachment assembly is disclosed for drilling holes with beveled top openings in a work piece. The assembly includes a drill shaft with at least one longitudinally extending groove formed therein. A trimming attachment suitable for clamping to the drill shaft is also provided to form a beveled recess at the top of a hole formed by the drill. The trimming attachment includes a body and a trimming blade having base and arm portions. The base portion of the trimming blade is detachably secured to the body, and the body is arranged to be removably journaled about and clamped to the shaft of the drill such that an edge of the arm portion of the trimming blade is closely received by the groove. Thus, during use, the groove carries at least a portion of the load acting against the trimming blade.

REFERENCES:
patent: 2340941 (1944-02-01), Dietz
patent: 3266344 (1966-08-01), Supernor
patent: 3877099 (1975-04-01), Halpern
patent: 4533285 (1985-08-01), Jorgensen
patent: 5071295 (1991-12-01), Greig

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