1. Two PBH series in same specification are chosen as main machine with double motor linkage synchrony-device, which may work together to process overlong workpiece or operate separately to increase production efficiency.
2.Defection compensation device is fitted too, Mechanic and fluid servos with mechanic slider are utilized in synchronous device, the stroke of upper slider and the position of rear apron regulated quickly by machine and micro-regulated by hand with electronic NC display.