Study on fabrication of small diamond wheels for micro-grinding applications

• Main Authors: Po-Hsianf Chiu, 邱柏翔
• Other Authors: Choung-Lii Chao
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/62743513413936645977

碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 100 === As the demand for precision optical components with sub-millimeter feature size steadily increasing, numerous efforts have been made in developing new techniques and in improving the existing approaches to efficiently and economically produce those components. Glass molding process (GMP) is one of these methods to enable mass production of precision glass optical components in recent years. One of the key issues in GMP is precision mold fabrication. Since the mold are normally made of hard and brittle materials such as tungsten carbide (WC) and silicon carbide (SiC), precision diamond grinding is by far the leading choice used to machine the GMP mold. As the feature size of optical component gets smaller, the size of mold and grinding wheel used to fabricate the mold gets smaller too. This makes getting one of those “micro diamond wheel” a time consuming and very expensive task. This research aimed to develop a effective way of fabricating small diamond wheel. UV curing polymers were used as bond materials for diamond particles of various sizes. Diamond wheels of around 0.8~1mm in diameter after truing were successfully produced. A surface roughness of 32nm Ra was achieved during preliminary diamond grinding tests of WC materials using the fabricated diamond wheel.