Use multi-blade type large feed for efficient processing of rounded end mills and jx coated blade in the latest CNC machining centers (cutting feed rate of up to 50m / min) on the instance: multi-blade type large feed blade rounded outer diameter end mills for φ32mm, there are five cutting edges; insert grades for jx1045; processed materials 40crmnmo7 (equivalent jis standard skt3). In the cutting speed vc = 300mm / min, spindle speed n = 3000 / min, cutting feed rate vf = 50m / min, the amount of feed per tooth fz = 3.3mm / tooth, cut deep ɑp × ɑe = 0.3 × 25mm of cutting under the conditions, the light complete cutting. High-speed CNC machining center used not in widespread use at home and abroad, with the current widespread use of cutting feed rate 10 ~ 20m / min compared to high-speed CNC machining centers, processing efficiency can be increased from 2.5 to 5 times. The new generation of multi-blade type large rounded end mill feed allows existing high-speed CNC machine tools to maximize functionality.      The above description of the application of the latest technology developed epoch deep rounded cutting mills, large feed development purposes and effects of the fillet coated end mills and jx. The emergence of these new tools to meet the increase in demand for mold processing efficiency, but also reduces tooling costs.