Numerical control system maintenance test platform

The utility model discloses and belongs to the technical field of maintenance and testing. The numerical control system maintenance test platform is provided. The device comprises a main frame, wherein a main body is clamped above the main frame; a three-phase power supply and a direct-current power supply are fixedly connected to the left inner wall of the body. The three-phase power supply is positioned above the direct-current power supply; the right inner wall of the body is fixedly connected with a signal processor; the front end of the inner wall of the main body is fixedly connected with a control relay, a frequency converter and a monitoring unit in sequence from top to bottom; the left and right ends of the control relay are electrically connected with the three-phase power supplyand the signal processor respectively; the left ends and the right ends of the frequency converter and the monitoring unit are electrically connected with the direct-current power source and the signal processor respectively