Drawing device for mathematical modeling

The invention relates to a drawing device for mathematical modeling, which comprises two bottom plates which are hinged to each other, and first drawing plates are hinged to the two sides of the two bottom plates correspondingly; strip-shaped grooves are formed in the left and right sides of the top surfaces of the two bottom plates, and threaded rods are arranged in the strip-shaped grooves; knobs are arranged at positions, corresponding to the threaded rods, on the outer side wall of the bottom plate; one end of the threaded rod penetrates out of one end of the strip-shaped groove to be fixedly connected with the knob, the other end of the threaded rod is rotationally connected with the other end of the strip-shaped groove, the threaded rod is in threaded connection with a pin shaft seat, second drawing boards are arranged on the two bottom plates, and one sides of the two second drawing boards are hinged between the left pin shaft seat and the right pin shaft seat at the corresponding positions through pin