Semi-automatic cutting machine for adjusting bicycle cutting nozzle height

The utility model provides a semi-automatic cutter capable of automatically adjusting the height of a cutting nozzle. Through the arrangement of a rolling wheel 2 and a rolling wheel carriage 4, and the installation of a rolling wheel 3 on the cutting nozzle, when the cutter is in use, the rolling wheel 3 touches an element being cut, when the surface height of the element changes, the rolling wheel 3 always moves along the cut surface through the extrusion of a spring, thereby the constant distance between the cutting nozzle and the element being cut is realized.