Low-cost simple universal milling head device

The invention discloses a low-cost simple universal milling head device. The low-cost simple universal milling head device comprises a horizontal adjusting assembly, a vertical adjusting assembly and a connecting bolt. When the low-cost simple universal milling head device works, power transmission is achieved through meshing of the upper gear and the side gear and meshing of the side gear and the lower gear; during transposition adjustment, the vertical rotating shell is rotated, the rotation of the shell can drive the lower gear to rotate, and then the side gear and the upper gear are driven to rotate, so that the axis of the lower gear rotates around the axis of the side gear; when the horizontal rotating shell is rotated, the gear box body rotates around the input axis to drive the side gear to rotate, and then the upper gear and the lower gear are driven to rotate, so that the axis of the side gear rotates around the axis of the upper gear. The cutter head can rotate by 360 degrees in the horizontal plan