Machine tool digital twin model performance test method and device

The invention relates to a machine tool digital twin model performance test method and device, and belongs to the field of device intellectualization and digitization. The machine tool digital twin model performance test device comprises a machine base, a work table a, a work table b, a portal frame and a control system. A grating ruler displacement sensor is arranged between the machine base andthe work table a. An X-direction servo loading mechanism and a Z-direction servo loading mechanism are arranged on the portal frame. A Y-direction servo loading mechanism is arranged on the machine base. The X-direction servo loading mechanism, the Z-direction servo loading mechanism and the Y-direction servo loading mechanism are internally provided with tension and pressure sensors correspondingly. Three-direction vibration acceleration sensors are arranged on a lead screw bearing pedestal, a nut base and guide rail slide blocks correspondingly. A servo motor and all the sensors are connected with the control system