Journal of Vibroengineering, 2015, Vol.17(4), p.1660(11)
In order to obtain the satisfied machining requirements, ball-screw feed drive systems of machine tools need to work accurately and efficiently. A new method which can predict exactly the dynamic performance of feed drive systems by integrating the virtual prototype and finite element is proposed in this paper. The influences of flexible bodies and joint surfaces on dynamic performance were studied based on the finite element theory and dynamic theory. The exciting vibration simulation model can then be formed by using the integration method. The frequency response curves of ball-screw feed drive systems were obtained based on the vibration model, which matched quite well with the experimental results, where the stiffness and damping ratio were also identified respectively. It can be concluded that, therefore, the proposed integration simulation method can offer a theoretical foundation and reference for dynamic optimal design for other products. Keywords: feed drive systems, virtual prototype (VP), finite element (FE), dynamic performance, flexible multi-bodies, joint interface.
Drives (Machinery) – Mechanical Properties ; Finite Element Method – Usage ; Machine Dynamics – Measurement
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