Abstract: A chuck having a pair of opposed jaws reciprocable toward and away from each other to grip and release a workpiece and also rotatable incrementally about their axis of reciprocation to rotatably index a workpiece gripped by the jaws. The jaws are actuated by two axially reciprocable drawbars through two sets of cams, one set for reciprocating the jaws and the other for rotating them.

Abstract: A collet chuck having a workpiece stop engagable with an end face of a workpiece to properly locate the workpiece on the chuck. The stop is retracted after the workpiece is gripped so as to not interfere with a cutting tool for machining the end face of the workpiece engaged by the stop.

Abstract: A workpiece chuck assembly has a head adapted to be fixedly connected to the rotary driven spindle of a machine tool and a chuck member journalled in said head for rotary indexable movement about an axis radially offset from the rotary axis of the head.

Abstract: A collet chuck for gripping a workpiece around the internal diameter thereof having a collet sleeve expanded and contracted by axial movement over a tapered nose cone at the forward end of a collet expander. The collet sleeve is connected by a plurality of axially extending pins with a collet puller plate. The collet puller plate is guided for axial movement and prevented from cocking relative to the rotary axis of the chuck by means of a pilot pin on the puller plate slidably mounted in a pilot bore on the expander member of the chuck.

Abstract: A chuck wherein the jaws are mounted on the outer ends of rods slideably arranged in the chuck body to incline radially and axially inwardly from the front face of the chuck. The rods are slotted on their radially outer sides for engagement with an axially shiftable actuator. The actuator and the chuck body have an axially central passageway therethrough for directing coolant to the front face of the chuck or for accommodating a workpiece ejector rod.

Abstract: A collet chuck has a sleeve which is resiliently flexible radially and provided with two axially spaced work-gripping surfaces and two axially spaced conical surfaces on its outer and inner peripheries, respectively. In response to axial movement of an actuator on the chuck body, the collet sleeve is first shifted axially to engage one of said conical surfaces with a similar surface on the chuck body to displace one of the gripping surfaces radially into engagement with one section of a workpiece. Continued movement of the actuator causes a conical surface thereon to engage the other conical surface on the collet sleeve to displace the other work-gripping surface radially into engagement with another section of the workpiece displaced axially from the first section.

Abstract: A diaphragm chuck having a plurality of circumferentially spaced jaws fixedly mounted on the diaphragm and a ring releasably interengaged with the jaws. The ring has a plurality of radially movable pins thereon which, when the diaphragm is flexed, are adapted to be displaced radially into and out of clamping engagement with a workpiece.