[IEEE 2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM) - Palawan, Philippines (2014.11.12-2014.11.16)] 2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM) - Development of an automatic tool changer (ATC) system for the 3-axis computer numerically-controlled (CNC) router machine: Support program for the productivity and competitiveness of the metals and engineering industries