Collet-type drill

Details Collet-type drill Collet-type drill

B - Operations, Transporting

23

B

77/16

B23B 45/14 (2006.01) B25H 1/00 (2006.01)

Patent

CA 1173671

IMPROVED COLLET-TYPE DRILL Abstract of the Disclosure The collet-type drill includes improved clamping means having a pressure foot member that is in engagement with the work piece. The pressure foot member is connected with a drill motor and with a feed means. A collet is operably connected to and movable relative to the foot member, and when actuated, connects the drill to the work piece. A clamp bushing has one end pivotally connected with the collet and encircles a cylindrical sleeve that has a transverse slot extending therethrough. The bushing is connected to the pressure foot member. A clamping piston extends through the sleeve and carries a connecting pin that extends through the slot in the sleeve into the clamp bushing whereby the bushing and collet are movable together in response to movement of the clamping piston to force the collet into holding engagement with the work piece.

407556

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