Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1988-09-19
1989-09-12
Bishop, Steven C.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
144106, 269220, 269282, 408 72R, 408112, 408 16, B23B 4514
Patent
active
048654965
ABSTRACT:
A jig used for precision boring of holes in a working surface of an elongate work piece includes a pair of mounting plates and an elongate connecting member for mounting the plates together in adjustable, spaced positions such that the plates face each other and can be moved in a direction toward and away from each other. Engagement pad members are attached to mutually respective, bottom sides of the pair of plates. The pad members are adapted to engage opposite sides of a work piece in firm engagement therebetween when the pair of plates are moved toward each other, with the work piece being disengaged when the pair of plates are moved away from each other. A guide member is mounted between the pair of plates and is adapted to guide a boring tool in a linear movement toward and away from a working face of the work piece. The guide member is mounted and positioned such that the linear movement of the boring tool lies in a plane passing generally through the longitudinal axis of the work piece. The mounting of the guide member further allows for movement of the guide member in an arcuate path such that the angle between the direction of linear movement of the boring tool and the longitudinal axis of the work piece can be selectively varied.
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Bishop Steven C.
Challis Stairways, Inc.
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