超音波振動を援用した金型の鏡面仕上げ加工(第1報) : ダイヤモンド電着工具を用いた金型鋼の正面研削

概要

論文の詳細を見る
Dies for injection molding parts such as cellular phones and light conductive parts require a high quality surface finish in terms of both appearance and integrity. In order to finish dies, manual polishing by a skilled worker has required after machining processes; such as EDM and milling. But the manual polishing causes poor flatness of dies and time consuming then expensive. So it is desired to establish a machining process to finish dies without manual polishing. In this study, a 3D positioning machine equipped with an ultrasonic spindle was used for grinding experiments. Electroplated diamond tools were equipped. Generally, diamond tool cannot grind steel because of the terrible wear due to chemical reaction between diamond and steel. However, ultrasonically assisted grinding can make fine surface (0.4〜0.84μmRz) of die steel, without observable tool wear. Effects of tool feed rate, radial depth of cut and axial depth of cut were investigated.
公益社団法人精密工学会の論文
2006-09-05