... energy accumulator on the hydraulic main valve block oil way, the speed of punching and ... feeding speed, high efficiency.2.Adding 1 energy accumulator on the hydraulic main valve block oil way, ... CNC technology, servo motor in-feeding, with high efficiency, stable workpiece precision.8.Key electric, ... floppy disk and USB interface JX4014 High Speed CNC Punching Marking and Cutting Machine for Angles