The vertical lathe main drive startup directly by the main motor, and energy consumption braking. The control panel owns the speeding changing button to change the worktable speed of vertical lathe, and press the button can change the speed of vertical lathe. There are double row cylindrical roller bearings up and down the worktable spindle, which have taper can adjust the radial clearance to make sure the machine owns high precision and stability under high speed. The worktable guideway and the main drive structure are lubricated by the pressure oil.