Rotary cutting tool
OwnerAndre Janininventor
Life of this patent
Estimating the term…
Abstract
A rotary cutting tool having a cutting element at one end and a cylindrical shank at the other end terminating in a T-shaped mounting tongue member, and a tool support for holding the tool in floating engagement the support having a cylindrical body with a transverse T-slot in its end for receiving said tongue member, the slot having sliding clearances with respect to the tongue member, and the holder having a sleeve which is spring urged to cover the T-slot to retain the tongue member in it, the inner diameter of the bore through the sleeve having a small clearance where it overlies the shank of the tool so that the latter can move transversely to align the tool in a hole when it is in use.
Claims5
A rotary cutting tool and quick-change tool holder operative to support the tool in a floating engagement permitting the tool to shift transversely of the holder through a limited distance, comprising:
- a. a rotary cutting tool having an annular active cutting element and having a cylindrical shank extending therefrom, the shank terminating in a T-shaped tongue portion which is undercut at a location spaced from the end of the shank to leave a head at the end of the shank;
- b. a tool support comprising a cylindrical holder having a transverse T-slot cut therethrough and shaped to recieve the head of the tongue portion as a clearance fit in the inner portion of the T-slot and the undercut portion of the tongue portion as a clearance fit in the outer portion of the T-slot, the cylindrical shank being adjacent to the cylindrical holder when the tongue portion is in the T-slot;
- c. a sleeve member having a bore which is a snug sliding fit on said cylindrical holder and a clearance fit on said shank;
- d. yieldable means normally maintaining the sleeve with its bore surrounding the cylindrical holder and surrounding a portion of the length of the shank between the tongue portion and the cutting element;
- and
- e. the clearance between the sleeve bore and the portion of the shank which it overlies limiting said transverse shifting of the tool in the holder.
Dependencies are inferred from the claim text.