Cutting by use of rotating axially moving tool – Including means to cause tool to progressively vibrate...
Patent
1995-12-15
1998-05-19
Pitts, A. L.
Cutting by use of rotating axially moving tool
Including means to cause tool to progressively vibrate...
408115R, 408129, 408146, 408702, B23B 4504
Patent
active
057527890
ABSTRACT:
The invention provides a unique approach to solving a peck feeding problem in limited access areas restricting the drilling unit size. It uses a power transmission system which is comprised of a pinion gear driven by a motor source. The pinion gear drives a bevel gear that is free to travel along a polygon quill. A quill had is located on one end of the quill to house the drill. The opposing quill end is attached to a guide bushing assembly. The guide bushing assembly is connected to a bell crank mechanism that is actuated and controlled by a pneumatic piston and hydraulic speed control system. The power transmission system, and the pneumatic power transfer system combined produce a pecking cycle for drilling precision holes within a confined set-up space of 5.5 inches in a preferred embodiment. It preferably has a drill stroke up to 1 inch deep, and is capable of producing a "pecking" action which is unique for right angle drilling equipment in limited access applications.
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Pitts A. L.
Redman Mary Y.
The Boeing Company
Tsai Henry W. H.
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