Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Movable relative to tool along tool-axis
Patent
1990-12-24
1992-03-17
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Movable relative to tool along tool-axis
408113, 408241S, B23B 4700
Patent
active
050963422
ABSTRACT:
There is provided by this invention an apparatus for drilling composite materials which provides controlled depth drilling. In a first embodiment of the invention, a drill motor is integrated within a microstop cage and retained by a lock nut, such that by extending or shortening the microstop cage the depth of the hole drilled is decreased or increased, respectively. The drill motor is urged towards the composite surface against spring pressure which, in conjuntion with a stop collar, limits the depth of the hole drilled. Furthermore, the spring facilitates the retraction of the drill bit from the composite surface. Alternatively, the depth of a hole may be incrementally controlled by the amount that a stop cage is threaded onto an attachment sleeve that in turn is attached to the drill motor. The further the stop cage is threaded onto the attachment sleeve, the deeper the hole drilled will be as more of the drill bit will be exposed beyond the stop cage. Conversely, the less the stop cage is threaded onto the attachment sleeve, the more shallow the hole will be as less of the drill bit will be be exposed beyond the stop cage.
REFERENCES:
patent: 2301151 (1942-11-01), Spievak
patent: 2308055 (1943-01-01), Cogsdill
patent: 2359859 (1944-10-01), Jarvis
patent: 2409377 (1946-10-01), Miller
patent: 2608114 (1952-08-01), Martin et al.
patent: 2710549 (1955-06-01), Cogsdill
patent: 3028774 (1962-04-01), Hausser et al.
patent: 3060772 (1962-10-01), Crump
patent: 3527273 (1970-09-01), Falter
patent: 4037982 (1977-07-01), Clement
patent: 4764060 (1988-08-01), Khurana
patent: 4802798 (1989-01-01), Adamson
Blankenship Tom
Compton Ralph
Griffith John
Howell Daniel W.
Hudson, Jr. Benjamin
McDonnell Douglas Corporation
LandOfFree
Apparatus for drilling composite structures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for drilling composite structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for drilling composite structures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1471934