Parallel high speed machining with a new additional HSC spindle for machine tools

This paper presents the application of a new spindle concept for Parallel High Speed Machining (PHSM) such as milling, drilling and grinding with small tool diameters. These tools are mounted parallel to the main spindle on conventional, CNC- and parallel kinematic machines, including preliminary machining results. This new and innovative concept for air- or lubricant-driven spindles enables speeds of up to 90.000 rpm and, in addition, improves micromachining and finishing operations when applied on CNC-and standard machine tools. This leads to a significant widening of the application range of various machine tools and to an improvement of productivity by higher efficiency and faster tool- and spindle-change, respectively.