Dynamical Behavior of a Linear Maglev Support Unit for Fast Tooling Machines

Tooling machines with an aimed velocity to accuracy ratio of 600 m/min:mm and higher require linear guides with high slide velocity and very high position accuracy. To obtain these aims three tasks - supporting, guidi ng and actuating of a translational support unit - shall be realised by means of active magnetic bearings (AMB). The resulting linear maglev-guide for tooling machines must exhibit the following characteristics: high stiffness, good damping and low noise levels as well as low heat production. First research on a one degree-of-freedom (DOF) support magnet unit aimed at the development of components and efficient control strategies for the linear maglev-guide. Subsequent research is directed to renJise a five DOF maglev linear-guide for fast tooling lI1achines. This paper describes results of the one DOF support magnet unit and first results of the complete maglev linear guide.