Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1982-03-19
1984-07-24
Briggs, William R.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
408 72R, B23B 4728
Patent
active
044616031
ABSTRACT:
A drilling fixture for drilling either cylindrical or flat workpieces on or off center is disclosed. The fixture includes a base having a V-shaped groove for receiving larger cylindrical workpieces, a pair of smaller V-shaped openings in the side walls of the base for receiving smaller cylindrical workpieces, a cover attached to the base, and a rotatable, indexable drill bushing mounted to the cover. The larger and smaller V-shaped grooves intersect at a common workpiece center-line drilling point. Thumbscrews are provided to clamp the workpieces in the grooves. The drill bushing includes a series of different size drill guide holes spaced about the circumference of the bushing on a common radius for receiving predetermined drill bit diameters to guide the drill bits along their longitudinal axes during a drilling operation. The bushing has intersecting planar side faces and vertical edges which engage a raised indexing and locking block on the cover for locating and positively locking the bushing in place for the drilling operation. V-shaped stepped inserts can be mounted in the larger V-shaped groove in the base to allow for drilling of common sizes of channel steel, angle iron, and similar structural shapes.
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Collier Stephen L.
De Noma George R.
Klee George
Newman Rodney J.
Briggs William R.
Cincinnati Tool, Division of Warren Tool Corporation
Meier Lawrence
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