Abstract: Particularly compact facing head structure including a housing having an axis of rotation and adapted to be directly secured to a rotating spindle for rotation about the axis of rotation thereof, slides secured to an end face of the housing for movement transversely of the axis of rotation of the housing, an actuating member positioned within the housing for movement axially thereof having external helical cam teeth thereon, an axially fixed cam member positioned between the housing and actuating member for rotation relative thereto having internal helical cam teeth engaged with the helical cam teeth on the actuating member whereby an axial movement of the actuating member relative to the housing the cam member is rotated angularly with respect thereto, and slot and pin mechanisms operable between the slides and cam member for moving the slides transversely of the axis of rotation of the housing on rotation of the cam member, which facing head extends a minimum distance beyond the mounting face of the spindle

Abstract: A multi-station machine tool wherein the bed of the frame supports two spaced-apart upright columns and the columns support an indexible shaft for a turret which is disposed between the columns. The turret has several sets of clamping jaws for elongated rod-shaped workpieces which are introduced and removed at a first station or which are introduced at a first station and removed at a second station. The number of stations may greatly exceed two, and each column supports several spindles including at least one rotary and axially movable tool spindle and at least one axially movable and preferably rotary work spindle. Each spindle in one of the carriers is coaxial with a spindle in the other carrier, and the turret indexes the workpieces in such a way that they come to rest between successive or selected pairs of coaxial spindles.