| Summary: | 碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 97 === Traditionally, wire electrical discharge machining (WEDM) was used for cutting hard materials and work pieces with simple geometrical features. With the growing markets of micro system technology, recently some micro-WEDM applications have been studied. However, due to the limitations of low material removing rate and configurations, existing designs were applied only for 2-D, ruled surface, or axial-symmetry work pieces.
In this study, the existing WEDM machines and configurations are reviewed from patents survey. Based on the mechanism module presented by Ou et al., this study installs such a module to a structure with 3 linear drives, and which forms a novel 5-axis WEDM configuration. Accordingly, the kinematic analysis of this new configuration is investigated.
First, the transformation matrices of the components coordinates in this configuration are derived, and the orientations of cutting features and wire electrode are depicted as unit vectors. Then, by applying homogeneous transformation method and let the two unit vectors be equal, the rotational and translational parameters of this new configuration can be obtained. And, the results show that this new design can be applied to the intricate surfaces or parts machining. Finally, the configuration is established in CAD software ‘Solid works,’ and some examples are illustrated for verification based on the results of kinematic analysis. The results of this study can be the theoretical basis of engineering application.
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