Finite-element and experimental analysis of dynamic behaviours of a micro-stamping tool system

As demands on the forming of micro-products increase, ensuring the high-quality design of machine-tool systems becomes increasingly more important. This is particularly due to a need to address smaller geometries and finer tolerance requirements, compared to those of conventional forming. Finite-element (FE) simulation of the dynamic behaviour of machines and tools is particularly useful for supporting design optimisation. Detailed finiteelement modelling of stamping tool systems has, however, not been addressed previously. Difficulties tend to arise when many tool parts need to be considered in the modelling. In this paper, dynamic analysis of a microsheet-forming system driven by a linear motor is presented. Parameters that influence dynamic behaviours of the microstamping tool were investigated using the finite-element analysis and the results of experimental measurement. The findings provide useful information for the improvement of the design of micro-stamping tools as well as for the design of micro-forming-machine systems.