USING TAGUCHI METHOD DESIGNS TO OPTIMIZE THE EXAMINATION FOR CNC LATHE

C.P. Chen, T.H. Lin

National Changhua University of Education (TAIWAN)
Industry is a country's backbone. Because the computer industry has developed so rapidly, computer-aided manufacturing (CAM) technology is a substantial component of various research fields. Therefore, learning basic computer numerical control (CNC) is core of the CAM. CNC is generally learned through actual operation and software simulation, with students’ progress tested by examinations or quizzes. In order to understand the effectiveness of the learning process, the test contents need to reflect the desired skills. However, the test’s contents and degree of difficulty will affect students’ability to demonstrate their learning achievement. This study employed a quasi-experimental method, examining CNC skills of 44 Taiwanese university students. Using the Taguchi method optimized for the CNC curriculum, skill testing combined hard, medium, and easy content for different levels. Students were able to achieve the learning objectives of the CNC curriculum, and the results provided the reference baseline for setting questions for CNC courses.