Characterization of electrospindle angular synchronization performance in power skiving

Power skiving is receiving growing attention in the gear and spline industry, largely because of its high productivity and its implementation into versatile machine tools such as turn-mill centers. Despite its original patent dating back to 1910, the process has only recently become industrially viable, as it requires technological capabilities that were previously unavailable. Two factors are particularly critical: precise angular synchronization between tool and workpiece spindles, and sufficient static and dynamic rigidity of the machine tool. While current technology allows the successful execution of many skiving operations, these requirements remain limiting factors and are a common source of geometric errors. To the authors’ knowledge, no established method exists to quantify the Effective performance of machine tools in skiving. This study therefore introduces several approaches designed to identify measurable performance indicators, with protocols suitable for industrial implementation. The proposed methods provide practical tools to assess the capabilities of machine tools for skiving operations. Special emphasis is placed on the accuracy of angular position control, which influences the resulting gear tooth topography. Beyond their immediate application in process development, they could serve as standardized performance indicators such as acceptance protocols, as well as guidelines for machine design.