Research on the Key Technology in Ultra-Precision Machining of Optical Micro V-Groove Mold Roller

Abstract

The optical properties of micro-structure surface mold roller in the field of optics, machinery and electronics, biomedical and defense sectors are showing an increasingly important application value and broad application prospects. There is still no more mature method to machining ultra-precision large-size optical V-groove mold roller, and the roller surface treatment technology cant meet the technical requirements of the field of optical applications. This article takes advantage of ultra-precision diamond turning to machining V-groove structure on nickel-phosphorus plating steel roller by spiral cutting method. The helix angle of the mold roller was designed 0.9", which meet the requirements of the experimental error, while using a nickel-phosphorus alloy coating can eliminate the secondary polishing process and achieve a cost-efficient ultra-precision machining. Analyzed the processed tool wear, high-temperature graphitization and micro-chipping were the main reason for tool wear.