Abstract: A process of machining outer joint parts (11) and inner joint parts (21) of constant velocity universal ball joints, which outer joint parts (11) and inner joint parts (21) each comprise a longitudinal axis and a number of ball tracks (12), wherein the ball tracks are each arranged circumferentially in pairs (121, 122), whose central track lines are positioned in planes (E1, E2, E3, E4) extending parallel relative to one another, wherein the pairs of ball tracks (12) are machined by rotating disc tools (16) whose axes of rotation (R) perpendicularly intersect the respective longitudinal axis at a distance from one another and are held and guided coaxially relative to one another.

Abstract: This disclosure concerns a device for machining surfaces, e.g., superfinishing, polishing, grinding or lapping spherical shells or flattened domes of a workpiece, or, for example, a ball joint, using a tool having a machining stone with a workpiece receiver, a first drive for an oscillating motion about a first axis of the workpiece, a tool holder and a second drive for an oscillating motion about a second axis of the tool holder, whereby the axes are an angle to one another.

Abstract: This invention relates to a method and apparatus to create a pre-established textured surface on a workpiece. The pre-established textured surface includes an average roughness and a non-directional lay pattern being formed to a controlled width.