Metal working – Method of mechanical manufacture – Disassembling
Patent
1986-01-15
1988-04-05
Goldberg, Howard N.
Metal working
Method of mechanical manufacture
Disassembling
29255, 29256, 29263, 29264, 29723, 29726, 29727, 165 71, B23P 1526
Patent
active
047349727
ABSTRACT:
The tube plug removal machine removes any type of tube plug by drilling into a plug portion with a tap drill bit, engaging that plug portion with a threaded section of the tap drill bit after the drilled hole has been threaded by a tapping section thereof, and removing a portion of the tube holding the plug in the tube with a counterbore drill bit mounted concentrically about the tap drill bit. A trip pin and trip spline enable the tap drill bit to be automatically disengaged from the motor once the tap drill bit has been threaded into engagement with the plug. The conterbore drill bit is thereafter self-centered with respect to the tube and plug about the now stationary tap drill bit. After a portion of the plug has been removed by the counterbore drill bit, pulling on the tap drill bit will remove the remaining plug portion from the tube.
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Goldberg Howard N.
Ross Taylor J.
Satina Donald M.
Westinghouse Electric Corp.
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