Abstract: A method and an apparatus are described for superfinishing convex or concave jacket faces of rotationally symmetrical workpieces, in particular of roller bearing rollers, in which the workpiece is received and rotated between two rotatable rollers, at least one of which is driven, while a honing stone is lowered perpendicularly to the longitudinal axis of the workpiece against the jacket face and thereby executes an oscillation parallel to the longitudinal axis of the workpiece. Along at least a portion of its stroke movement, the honing stone is imparted a further oscillation, synchronous with the first, along a curved path located in the jacket face of the workpiece.

Abstract: Method and apparatus for micro-finish machining of cylindrical or conical surfaces on workpieces, and in particular the raceways of cylindrical or tapered roller bearings using a honing tool. The honing tool is subjected to two distinct motions in a direction parallel to the transverse direction of the surface of the raceway to be machined. One of the motions, the first oscillation, has a short stroke relative to the width of the surface to be machined, while the other motion extends over the entire width of the surface to be machined. The two motions are superimposed for achieving a surface contour of the raceway so that during full loading of the bearing, the raceway is subjected to approximately uniform surface pressure over the entire width of the raceway.

Abstract: The honing tool in a centerless honing apparatus is held in an oscillating head and is pressed against the workpiece transported by rotating rollers. The region of contact between the honing tool and the workpiece is immersed in a flushing liquid which serves to dislodge and remove abraded material from the contact surface of the honing tool. An ultrasonic generator is located near the honing tool and its transducer portion extends into the flushing liquid. The ultrasonic vibrations are transmitted by the flushing liquid to the honing tool, imparting thereto ultrasonic oscillations in a direction transverse to the rotational axis of the workpiece. The liquid also transmits ultrasonic vibrations directly to the contact area and to the embedded abraded material, thereby loosening it and permitting entrainment by the flushing liquid.