Investigation for Influence of Polishing Path on Work Surface with Taguchi Method

• Main Authors: Duc-Tuan Nguyen, 阮德俊
• Other Authors: none
• Format: Others
• Language: en_US
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/60929092963584605207

碩士 === 國立高雄第一科技大學 === 工程科技研究所 === 95 === Polishing is a manufacturing process used as a surface-smoothing operation. The polishing process is based on the principle of applying a fine abrasive powder to a polishing wheel, with a relatively slow motion between the work piece and the tool, to reduce the surface roughness of the part. Polishing creates very small irregularities in worked surface and a small worked layer. Before polishing, the work surface is covered by scratches, grooves, minor blemish, etc. To minimize surface damage and defects, gentle polishing conditions are required, and the abrasive should not be considerably harder than work-material. The main objective of this research is to determine the effect of polishing conditions such as polishing path, rotational speed, and feed rate on work surface. Specially, this study is focused on investigation of influence paths of polishing tool on work surface using Taguchi method for optimum of process parameters to obtain the best fishing possible. A L9 orthogonal array was designed and carried out in the experiments. The surface finish parameter, namely, RZ (average of ten points) is considered as criteria for optimum. The experimental results indicate that a set of optimal polishing conditions for producing work surface within the range of parameters evaluated, double-oblique polishing path, a high level of rotational speed, and a low level of feed rate are desirable for improve surface finishing RZ. In addition, the analysis of variance (ANOVA) is also employed to identify the polishing path as the most important parameter, followed by rotational speed and feed rate. Furthermore, verification of the experiment shows that Taguchi method is optimized to achieve the best level.