Patent ID: 6899495

Claim:
Rotatable tool for chip removing machining comprising a holder part mountable in a machine and defining a center axis of rotation, and a replaceable cutting part connected to a front end portion of the holder part by a male/female coupling; the coupling including a seat formed in the front end portion of the holder, and a male member protruding rearwardly from a rear end of the cutting part; a slot formed in the front end portion of the holder part between two resilient projections of the holder part which clamp the male member in the seat; the cutting part including rearwardly facing thrust transmitting surfaces disposed radially outside of the male member; the front end portion of the holder including forwardly facing thrust absorbing surfaces engaging respective ones of the thrust transmitting surfaces; the male member being elongated radially; the seat including a forwardly open, radially extending guiding groove in which the male member is disposed; the guiding groove being open at least at one radial end thereof and configured to permit insertion and removal of the male member in a radial direction and prevent insertion and removal of the male member in an axial direction; the male member including at least one external, substantially planar wedge surface inclined relative to the center axis in a direction having an axially rearward component and a radially outward component; the guide groove including at least one internal, substantially planar wedge surface inclined relative to the axis in a direction having an axially rearward component and a radially outward component; at least one wedge surface of the male member engaging the at least one wedge surface of the guide groove; the cutting part and the holder including mutually engaging first and second centering structures, respectively, for centering the cutting part relative to the holder part; the projections being resiliently movable toward and away from each other for clamping and releasing the cutting part.