Общий каталог Dijet 2018 - страница 552

Tooling by DIJET Up Cut and Down Cut Down cut milling Up cut milling - same workpiece direction, feed rate and rotation - the feed rate of workpiece is counter-clock-wise to the of milling cutter. sense of milling cutter rotation. - chip cross-section start on the strongest point. - chip cross-section start on the weakest point. Generally down milling should be prefered if rigid Up milling should be applied on instable milling machine machine is available. and workpiece materials with higher hardness. Tool with outside center work piece Tool with central work piece Formulas : Formulas : hm = sin(kr) x 360 x ae x fz hm = sin(kr) x 180 x ae x fz fz = hm x π x arcsin ( aedc )π x dc x arcsin ( aedc )sin(kr) x 180 x aeπ x dc x [arcsin (2xae1 ) + arcsin (2xae2 )]dcdchm x π x dc x [arcsin( 2xae1)+ ( arcsin 2xae2 )] fz = dc dc sin(kr) x 360 x ae Suggested milling operation We suggest to work like this when possible or in any case work with tan- gential tool exit. Up cut and down cut is possible with Ae Max. 2/3 of tool diameter. F008