Abstract: A spindle liner for a turning machine has an elongated polymeric member sized to fit within the inner diameter of a spindle and further has a bore through the polymeric member sized and shaped to receive a given size bar stock. The spindle liner may be installed within a spindle and bolted to a spindle flange by an adapter fixed to the spindle liner so that the spindle liner rotates with the spindle. The spindle liner attenuates noise and vibration of the rotating bar stock and eliminates whipping of the free end of the bar stock.

Abstract: A device for effecting at least one of a loading and unloading operation of a workpiece with respect to a machine tool. The device includes a base adapted to be mounted adjacent the machine tool and a tubular member. The tubular member includes an inner chamber and an elongate opening communicating with the inner chamber for receiving the workpiece. The inner chamber has one end adapted to communicate with a spindle of the machine tool and the tubular member is mounted for rotation with respect to the base. A sealing member is mounted for selective removal and sealing engagement with respect to the elongate opening and a source of pressurized air communicates with the chamber for moving the workpiece in at least one direction within the chamber when the sealing member is in sealing engagement around the elongate opening.

Abstract: A device for effecting at least one of a loading and unloading operation of a workpiece with respect to a machine tool. The device includes a base adapted to be mounted adjacent the machine tool and a tubular member. The tubular member includes an inner chamber and an elongate opening communicating with the inner chamber for receiving the workpiece. The inner chamber has one end adapted to communicate with a spindle of the machine tool and the tubular member is mounted for rotation with respect to the base. A sealing member is mounted for selective removal and sealing engagement with respect to the elongate opening and a source of pressurized air communicates with the chamber for moving the workpiece in at least one direction within the chamber when the sealing member is in sealing engagement around the elongate opening.

Abstract: A spindle liner and spindle liner assembly are for use in a lathe. A quick-change feature allows the spindle liner to be readily installed and readily replaced with a new spindle liner. The spindle liner has a tubular sleeve with a set of annular bearing rings and an annular mounting flange. An adapter specially configured for mounting on a particular lathe is designed for use with the spindle liner. The adapter has an annular body with a center hole to allow the tubular sleeve of the spindle liner to be slid through it. A recessed shoulder around the hole has a diameter to accommodate the annular mounting flange of the spindle liner. The adapter also has at least one and preferably opposed retainer lugs extending inwardly from a peripheral edge of the annular body and overlying the recessed shoulder. An equal number of notches in the mounting flange of the spindle liner are positioned to align with the retainer lugs when the spindle liner is positioned in the lathe.