Preload open-type hydrostatic guideway and control method

The invention discloses a preload open type static pressure guide rail and a control method, and relates to the technical field of machine tools, the preload open type static pressure guide rail comprises a machine tool body, a workbench, a static pressure device, a magnetic device and a load control system, the machine tool body is horizontally provided with a plane fixing guide rail and a V-shaped fixing groove, and the plane fixing guide rail and the V-shaped fixing groove are parallel to each other; the workbench is connected with a plane floating guide rail and a V-shaped floating guide rail; the static pressure device is used for inputting hydraulic oil into a gap between the V-shaped floating guide rail and the V-shaped fixing groove and inputting hydraulic oil into a gap between the plane floating guide rail and the plane fixing guide rail. The plurality of magnetic devices are respectively connected to the lower ends of the planar floating guide rail and the V-shaped floating guide rail; the magnetic