Optimal Value of Factors Affecting Surface Roughness and Workpiece Dimension on Acrylic Cutting with a CO2 Laser Cutter Machine Using the Taguchi Method
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Abstract
This research investigates the factors that affect the surface roughness and dimension of acrylic workpieces cut with a CO2 laser machine. The Taguchi method is used to analyze the factors according to statistical principles, followed by an analysis of variance (ANOVA). The experimental factors are divided into three levels: speed (1, 1.5, and 2 mm/s), maximum power (70, 80, and 90 %), and minimum power (70, 80, and 90 %). The surface roughness of the specimen will be measured using a portable surface roughness machine, while the size of the specimen will be measured using an external micrometer with a precision of 0.001 mm, to determine the post-cutting error dimensional. The results show that the speed factor significantly affects the surface roughness and error dimension after cutting. Increasing the movement speed results in a decrease in surface roughness. The main factors that result in the least surface roughness are a speed of 1.0 mm/s, maximum power, and minimum power of 90 %. The main factors that result in the least error dimension after cutting are a speed of 2.0 mm/s, maximum power, and minimum power of 80 %.
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