A horizontal milling machine

Redesign of a horizontal milling machine for improving performance by using SolidWorks, i built this machine part by part starting with gear box then, motor,belts, cover of gear box, cutter shaft, bracket, cutting tool, table, knee, saddle, 3 power screws with 3 motions (X,Y,Z) and finally the base then i made a total assembly for these parts and also made static and frequency simulation by SW for some parts like shafts in gear box, cutter shaft and power screws to reach the optimal solution of the design. https://grabcad.com/library/horizontal-milling-machine-2#_=_