Floating tap holder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 4, 1989
Grant Date -
N/A
app pub date -
Nov 12, 1987
filing date -
Nov 12, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A floating tap holder has a shank rotatably connected to a hollow sleeve. The hollow sleeve has opposed longitudinally extending slots. A drive shaft connected to a conventional chuck is axially movable within the hollow sleeve. A hand operated drive rod extends transversely through the opposed slots and is secured to the drive shaft. A coil spring received within the hollow sleeve biases the transversely extending drive rod and connected drive shaft axially downward. In use, the freely rotatable shank is received in the chuck of a conventional drill press, milling machine or lathe. A tap is mounted in the chuck of the floating tap holder and positioned in a previously drilled hole to be tapped. The spindle of the machine tool is moved downwardly, thus compressing the spring within the hollow sleeve. Then, the hand operated drive rod is rotated, thus rotating the drive shaft and chuck. The sleeve also rotates with the hand operated drive rod. The floating tap holder serves to maintain alignment of the tap with the center line of the previously drilled hole and also provides an axial feed force by virture of the compressed spring.
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