Adjustable positioning mainboard cutting device

The utility model discloses an adjustable positioning mainboard cutting device, which relates to the technical field of mainboards, and comprises a device body and a workbench, clamping assemblies are arranged on two sides of the upper end of the workbench, and each clamping assembly comprises a first rotating motor, a first sliding chute, a first screw rod, a first sliding block, a sliding rail, a guide rod and a guide block, first sliding grooves are symmetrically formed in the two ends of the workbench, first rotating motors are arranged on one sides of the first sliding grooves correspondingly, first lead screws are in transmission connection with one sides of the first rotating motors, first sliding blocks are in threaded connection with the outer walls of the first lead screws, and mounting bases are fixedly connected to the upper ends of the first sliding blocks correspondingly. According to the adjustable positioning main board cutting device, through the arrangement of the clamping assembly, position