OPTIMIZATION OF PROCESS PARAMETERS FOR WOOD LASER ENGRAVING BASED ON TAGUCHI METHOD APPROACH

Abstract

The paper presents the optimization of process parameters for wood laser engraving based on Taguchi method and analysis of variance (ANOVA). Laser diot mini machines using power source 10W is used for the experimental investigation process. The main parameters in the experimental wood surface laser engraving include such as: laser power (P), engraving speed (S), number of engraving lines per 1mm (L) and engraving head focal height (H). The surface geometrical dimensions while engraving, the engraving width (B) and the engraving depth (D) are main factors to determine the performance of engraving lines and the aesthetics of the product. The experiments were designed by the Taguchi L25 orthogonal array to analyze and obtain the important parameters. Then, to evaluate the optimal combination of parameters in the laser engraving process. The research results show that the influence of the factors P, S takes the leading role. Beside the two parameters L and H have a small influence on wood carving products. The optimization results prove that the combination of above factors at the correct values will give the most optimal set of parameters while maximizing the engraving depth (D) and minimizing the engraving width (B).