Vertical Lathes are large-scale mechanical equipment for the processing complex heavy parts which has large radial size and small axial size.such as a variety of cylindrical surface, end face, conical surface, cylindrical hole, tapered hole and so on. CNC double-column vertical lathe can also be used with additional equipment for the thread, spherical surface machining, profiling, milling and grinding and other processing. Compared with the horizontal lathe,spindle axis of vertical lathe is vertical layout,worktable is in a horizontal plane,so it is more convenient to find and clamp wokpieces.This layout of vertical lathe reduces the load on the spindle and bearing, so the vertical lathe can maintain long-term work accuracy.