Receptance coupling substructure analysis for modelling the dynamic process behaviour in milling processes with hydraulic chucks

Abstract Precise knowledge of the dynamic process behaviour of a given configuration helps to set up stable and productive milling processes. In particular, the vibration behaviour at the Tool Centre Point (TCP) is especially relevant. Currently, complex analyses have to be performed for each specific process configuration. For this time-consuming and costly Experimental Modal Analyses (EMA) are usually conducted. Receptance Coupling Substructure Analysis (RCSA) can potentially reduce this effort. With RCSA, the vibration behaviour of the overall system is calculated modularly from the vibration behaviour of individual subassemblies. The vibration behaviour of the subassemblies is determined only once by EMA or simulation. Subsequently, the subassemblies can be coupled without having to measure the entire system again. In this paper, the suitability of RCSA for coupling three subassemblies (spindle, tool holder, and tool) is investigated for the first time by applying a hydraulic chuck. Thereby, a maximum percentual deviation between the model and measurement of 2.9% was achieved for the first natural frequency at the TCP.