Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support
Patent
1995-07-19
1997-09-09
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
408115B, 408241B, B23B 4902
Patent
active
056649134
ABSTRACT:
A drill bushing is provided with a central passage therethrough for guiding a drill bit, reamer or tap in a production operation. The drill bushing includes a generally cylindrical body extending along the longitudinal axis, and first and second ends. An enlarged head is formed integral with the first end of the body and includes a first concave recess in the periphery of the head which forms a shoulder for facilitating the securing of the drill bushing to a jig plate with a locking screw. A second liner recess is also formed on the periphery of the head. The second recess forms a second shoulder which facilitates, in the alternative, the securing of the drill bushing to the jig plate, with either a locking screw or a clamp bar.
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Economy Bushing Co. Brochure --1991 and 1995.
Economy Bushing Company
Howell Daniel W.
Tsai Henry W. H.
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