Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1994-03-29
1995-04-25
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
408103, B23B 4728
Patent
active
054093295
ABSTRACT:
A drill guiding device is used to guide axial movement of a drill when forming a hole in a workpiece and includes a clamping assembly and a guide block. The clamping assembly includes a stationary clamping block, a pair of guide shafts which extend horizontally from the stationary clamping block and which have first end portions mounted removably on the stationary clamping block, a threaded shaft parallel to the guide shafts and provided with a head portion which is mounted rotatably to the stationary clamping block and a threaded shank portion which extends axially from the head portion, a movable clamping block mounted slidably on second end portions of the guide shafts and provided with a threaded hole to engage threadedly the threaded shank portion of the threaded shaft, and a mounting block mounted slidably on the guide shafts and disposed between and parallel to the stationary and movable clamping blocks. The guide block is mounted threadedly and adjustably on a selected one of the upright edge, the inclined edge, and the bottom edge of the mounting block and is formed with guide holes that permit extension of the drill thereinto.
REFERENCES:
patent: 706392 (1902-08-01), Corliss
patent: 2602238 (1952-07-01), Wellman
patent: 4158523 (1979-06-01), Schotzko
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