Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Adjustable – tool-guiding jig
Patent
1996-02-21
1998-08-11
Pitts, A. L.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Adjustable, tool-guiding jig
408 97, 408103, B23B 4900
Patent
active
057918350
ABSTRACT:
A holding fixture for use in drilling pocket joints in a workpiece with a drill bit which includes a work table having a transverse rail and a transverse slot near the front side, a toggle clamp fixed to the work table to hold down the workpiece, a fixed guide member fixedly secured to the work table between the transverse rail and the transverse slot near one end, and a movable guide member supported on the work table and moved along the transverse rail and the horizontal sliding rod and horizontal locating sliding bar of the fixed guide member, each of the guide members having a top head, a bottom base supported on the work table, an oblique through hole through the top head, a back open space at the back side between the top head and the bottom base in communication with the oblique through hole for receiving wood chips from the workpiece during drilling, a guide sleeve fixedly mounted in the oblique through hole for guiding the drill bit, and a smoothly curved notch on the bottom base for supporting and guiding the tip of the drill bit.
REFERENCES:
patent: 4294567 (1981-10-01), Wiggins
patent: 4752162 (1988-06-01), Groh
patent: 4842453 (1989-06-01), Raines et al.
patent: 4955766 (1990-09-01), Sommerfeld
patent: 5018912 (1991-05-01), Reitz
patent: 5322396 (1994-06-01), Blacker
patent: 5590986 (1997-01-01), Juang
Chiang Vance
Huang Chao-Cheng
Pitts A. L.
Tsai Henry W. H.
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