Drill bushing
AssigneeEconomy Bushing Company
InventorCraig R. Scholz
Life of this patent
Estimating the term…
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.
Claims10
A drill bushing, comprising:
- a generally cylindrical body extending along a longitudinal axis, the cylindrical body having first and second ends, and a central passage therebetween for guiding a tool;
- and
- an enlarged head about the first end of the cylindrical body, and having first and second sides perpendicular to the longitudinal axis, and further including a first concave recess in the periphery of the head defined by an arcuate concave recess sidewall extending from the first side of the head toward the second side of the head to form a first shoulder, and a second linear recess on the periphery of the head, the second linear recess defined by a generally planar linear recess sidewall extending from the first side of the head toward the second side of the head to form a second shoulder, the second shoulder including a third concave recess extending therethrough, the third concave recess defined by an arcuate concave recess sidewall in the periphery of the head.
A drill bushing assemble for guiding a tool in a production operation, comprising:
- a generally flat jig plate having an opening therethrough;
- a drill bushing having a generally cylindrical body with first and second ends and a central passage therethrough for guiding a tool, the drill bushing further including an enlarged head about the first end of the cylindrical body, the enlarged head having first and second sides and a first concave recess in the periphery of the head defined by an arcuate concave recessed sidewall extending from the first side of the head toward the second side of the head to form a first shoulder, the enlarged head further including a second linear recess on the periphery of the head, the second linear recess defined by a generally planar linear recess sidewall extending from the first side of the head extending towards the second side of the head to form a second shoulder, and the enlarged head further includes a third concave recess extending through the second shoulder, the third concave recess defined by an arcuate concave recess sidewall in the periphery of the head;
- and
- means for preventing axial movement of the drill bushing with respect to the jig plate.
Dependencies are inferred from the claim text.