Variable axial universal serial bus (USB) comprehensive electric knife tool for quickly cutting foam

The invention relates to a variable axial universal serial bus (USB) comprehensive electric knife tool for quickly cutting foam. The variable axial USB comprehensive electric knife tool for quickly cutting the foam comprises a handle rotating part and multiple thermal cutting tool bits, wherein the handle rotating part is movably connected to the front end surface of a handle body and rotates to be perpendicular to the handle body through a hollow rotary shaft part; and two conductive electrodes of any one tool bit are inserted into guide holes of the handle rotating part so as to be connectedwith corresponding positive and negative wiring copper pillars. According to the variable axial USB comprehensive electric knife tool for quickly cutting the foam provided by the invention, a radiating heat cutting manner is adopted, so that on the basis of ensuring that the cutting end surface is smooth without scraps, different tool bits can be installed, the corresponding part of a handle canbe rotated unidirectionall