Abstract
The purpose of this study is to clarify the relationship between the dynamic motion error of feed drive systems and the finished surface generated by simultaneous multi-axis controlled motions. To achieve the purpose, finished surface of cone frustum which is typically used for evaluating machining accuracy of 5-axis controlled machine tool is investigated. In this study, tool motion trajectory and tool orientation by considering dynamic characteristic are simulated by model of feed drive systems of a 5-axis controlled machine tool. The finished surface of cone frustum is predicted based on the simulated results. In order to clarify the validity of simulation result and influence of motion error in each axis on finished surface, actual cutting test is also carried out. In the cutting tests, control parameters of the machine tool were intentionally changed to obtain the motion errors. As the results, it is clarified that the proposed simulation method can predict the machined surface. The influence of motion error in each axis on finished surface is also discussed based on the results of cutting tests and simulations.
