Face driver for centering and driving workpieces chucked in a lathe

A face driver for centering and driving a workpiece to be chucked in a lathe, comprising a support having one end with a dead center adapted to engage against the workpiece and having a plurality of axially extending recesses and having first ends adapted to press against the workpiece and opposite second ends, said support having an opposite end with a cylindrical recess, a pressure plate floatably retained within the recess and having one side with portions in engagement with respective second ends of said pins, and which are elastically deformable and having an opposite side, and a compression member engaged against the opposite side of said pressure plate urging said plate and said driving pins toward the workpiece, said pressure plate includes elastically deformable portion formed by an insert of hydroplastic material.

A face driver for centering and driving a workpiece to be chucked in a lathe, comprising a support having one end with a dead center adapted to engage against the workpiece and having a plurality of axially extending recesses around the dead center, a driving pin movable in each of the recesses and having first ends adapted to press against the workpiece and opposite second ends, said support having an opposite end with a cylindrical recess, a pressure plate floatably retained within the recess and having one side with engagement portions in engagement with respective second ends of said pins and which are elastically deformable and having an opposite side, and a compression member egaged against the opposite side of said pressure plate urging said plate and said driving pins toward the workpiece, said pressure plate inlcuding a plurality of radially extending arms with respective arms being engaged with respective driving pins and having elastically deformable.

A face driver for centering and driving a workpiece to be chucked in a lathe, comprising a support having one end with a dead center adapted to engage against the workpiece and having a plurality of axially extending recesses around the dead center, a driving pin movable in each of the recesses and having first ends adapted to press against the workpiece and opposite second ends, said support having an opposite end with a cylindrical recess, a pressure plate floatably retained within the recess and having one side with portions in engagement with respective second ends of said pins, and which are elastically deformable and having an opposite side, and a compression member engaged against the opposite side of said pressure plate urging said plate and said driving pins toward the workpiece, said pressure plate being provided with elastically deformable segments disposed in two separate planes, one behind the other and mutually staggered.

A face driver for centering and driving a workpiece to be chucked in a lathe, comprising a support having one end with a dead center adapted to engage against the workpiece and having at least four axially extending recesses around the dead center, a driving pin movable in each of the recesses and having first ends adapted to press against the workpiece and opposite second ends, said support having an opposite end with a cylindrical recess, a pressure plate floatably retained within the recess and having one side with portions in engagement with respective second ends of said pins and which are elastically deformable, and having an opposite side, and a compression member engaged against the opposite side of said pressure plate urging said plate and said driving pins toward the workpiece, said driving pins being arranged within said support on different diameters and including an equalizing element on said pressure plate supporting said pins and an intermediate link comprising a ball member.