Calculation and verification of rotation angle of a four-axis hotwire cutter for transfer-type variable lamination manufacturing using expandable polystyrene foam

Lee, S. H.; Ahn, D. G.; Yang, D. Y.
September 2003
International Journal of Advanced Manufacturing Technology;Sep2003, Vol. 22 Issue 3/4, p175
Academic Journal
Most rapid prototyping (RP) processes adopt a solid CAD model sliced into thin layers of constant thickness in the building direction. Each cross-sectional layer is successively deposited and, simultaneously, bonded onto the previous layer; eventually the stacked layers form a physical part of the model. A new RP process called the Transfer-type Variable Lamination Manufacturing process using expandable polystyrene foam sheet (VLM-st) has been developed to reduce building time and to improve the surface finish of parts with thick layers and sloping surfaces. The objective of this study is to develop a method for calculating the rotation angles (θx, θy) of a linear hotwire cutter in the three-dimensional space for the VLM-st process using inverse kinematics. The method for calculating the rotation angles (θx, θy) of the four-axis hotwire cutter to VLM-st was applied and verified for a variety of free surface bodies.


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