Cutting tool, an arrangement and a method for chip removing machining with spring members for biasing a clamping body

An arrangement for determining the position of a cutter with respect to a holder in a cutting tool for chip removing machining in a direction of an intended axis of rotation for the holder for enabling securing of the cutter with a cutting edge in a selectable cutting functional position in the direction of the axis of rotation, the arrangement comprising

• a body movably received in the holder and having surfaces for bearing against the cutter for defining the position of the cutter in the direction of the axis of rotation,
• a screw adapted to be screwed in a threaded bore in the holder transversally to the axis of rotation the screw having portions adapted to act upon the body in the direction of the axis of rotation when the screw is screwed into the threaded bore, and
• spring members adapted to act between the holder and the body for biasing the body against the portions of the screw,
• wherein the body is a sleeve with a through-hole adapted to receive the screw, the screw portions are adapted to bear against the surfaces in the form of inner surfaces of the body, the holder has a cavity, in the bottom of which the threaded bore is arranged, the body is received in the cavity while being displaceable in the direction of the threaded bore, the spring member is formed by a compression spring adapted to act between the bottom of the cavity and surfaces of a lower side of the body directed towards the bottom, and the centre axis of the threaded bore is laterally displaced with respect to the centre axis of the cavity for pressing the body against a lateral wall of the cavity upon biasing action of the screw portions upon the body.

A method for securing a cutter to a holder of a cutting tool for chip removing machining with a cutting edge of the cutter in a selectable cutting functional position in a direction of an intended axis of rotation of the holder, the cutting tool comprising a body movably received in the holder and movable with surfaces to bear against the cutter for defining the position of the cutter in the direction of the axis of rotation as well as a screw which may be screwed in a screwing home direction and in an unscrewing direction in a threaded bore in the holder transversally to the axis of rotation and which has portions adapted to act upon the body in the direction of the axis of rotation upon screwing in the threaded bore, the cutting tool further comprising spring members adapted to act between the holder and the body for biasing the body against the portions of the screw, wherein the body is a sleeve with a through-hole adapted to receive the screw, the screw portions are adapted to bear against the surfaces in the form of inner surfaces of the body, the holder has a cavity, in the bottom of which the threaded bore is arranged, the body is received in the cavity while being displaceable in the direction of the threaded bore, the spring member is formed by a compression spring adapted to act between the bottom of the cavity and surfaces of a lower side of the body directed towards the bottom, and the centre axis of the threaded bore is laterally displaced with respect to the centre axis of the cavity for pressing the body against a lateral wall of the cavity upon biasing action of the screw portions upon the body, comprising

• screwing the screw in the screwing home direction in the threaded bore,
• after screwing the screw in the screwing home direction, screwing the screw in the unscrewing direction in the threaded bore until the body influences the cutter in the direction of the intended axis of rotation to reach the selectable position, and
• securing the cutter in the selectable position.