The Study of Machining Precision on Flute Grinding Process by Response Surface Methodology

• Main Authors: Wen-chi Hsiao, 蕭文奇
• Other Authors: Yung-cheng Wang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/86031654191225391316

碩士 === 國立雲林科技大學 === 機械工程系碩士班 === 99 === The diamond wheels which are made by foreign companies are about 4~10 times better than those are made by native companies according to the industrial experience. The specific grinding conditions were set for comparing the efficiency of grinding wheels which made in overseas and native companies, then the surface quality and shape accuracy were measured, also the wheel life could be assessed. For testing the performance of each diamond wheel in this study, the sintered tungsten carbide-based hard metals (HRA 92.3 and referred to as tungsten carbide or WC hereinafter) are set as the workpiece. We grooved four flutes in the end mill, which is an application of creep feed grinding. The grinding resistance and the consumption power which spindle made could considered as the cutting performance, surface roughness could considered as the shape accuracy, and grinding ratio could considered as the wheel service life. This paper analyzed the wheel grinding resistance, surface quality of the tool, and the grinding wheel service life through different diamond wheels which with specific combined conditions. When the basic characteristics of the groove grinding are obtained, further we analysis the surface roughness of a grinding groove by response surface methodology (RSM), grinding depth, tangential speed of wheel, and feed rate are chose as the controllable factors, the analysis result by RSM shows we could get the best grinding conditions to obtain finest groove roughness, or a range of fine roughness of groove, also the grinding depth and wheel tangential speed affect flute roughness more than the feed rate by engineering statistics analysis.