Patent ID: 6145420
Filing Date: 2000-11-14
Classification: B23B,Y10T

Abstract:
A tool holder for holding a collet having a central axis, the collet serving for holding a stationary tool on a turret of a turret lathe, the turret having a plurality of flat surfaces adapted for receiving a tool holder, the tool holder comprising:a body having a flat surface adapted for mounting against at least one of the flat surfaces of the turret and a nipple portion protruding from the body, the nipple portion having a threaded portion, and the body further comprising a fixed aperture extending through the nipple portion and the body, the aperture being parallel to the flat surface of the body and being of a fixed size and having a central axis, the aperture further having a first end centered on the axis and a second end centered on the central axis, the aperture being adapted for accepting the collet such that the axis of the collet coincides with the central axis of the aperture;means for circulating a cooling fluid through said body;means for mounting said body against the turret, said means for mounting said body against the turret being next to the aperture in the body and being normal to the aperture in the body, with the aperture in the body being between said means for mounting said body against the turret; andmeans for engaging the threaded portion and enclosing the collet between the threaded portion and the body and imposing an axial load on the collet and radially contracting the collet, the axial load being in the direction of the axis of the aperture, and for reacting the axial load against the body, so that the axial load radially collapses the collet when the collet is mounted in the aperture and the axis of the collet coincides with the axis of the aperture, and so that the tool to be attached to the turret lathe is gripped by the collet, and held in at a fixed distance from the turret along the axis of the collet and the axis of the aperture in the body.