Principle and Experiment of PRS-XY Hybrid NC Machine Tool

PRS-XY hybrid NC machine tool is a 5-degree-of-freedom cutting machine, which is composed of a 3-degree-of-freedom parallel mechanism and a 2-degree-of-freedom series mechanism, and can be applied to machining and testing of machine parts with complex surface. In this paper, the kinematics principle of the machining tool is analyzed, and the kinematics model for calculating the location of the real control axis is deduced. Through the cutting experiment of a typical part, the kinematics principle of the PRS-XY hybrid machining tool is validated, and the results also indicated that the machining tool has the multi-coordinates machining ability and preferable machining precision.