Dustproof heat dissipation stone cutting machine

The utility model discloses a dustproof heat dissipation stone cutting machine, which relates to the technical field of stone cutting machines and comprises a cutting bottom plate, a cutting unit and a dust falling and heat dissipation unit. A cutting box is mounted at the upper end of the cutting bottom plate; the cutting unit comprises a lower arc supporting plate, a cutting rotary column, a clamping sheet seat, a cutting sheet, a locking sheet nut and a cutting driven wheel, the lower arc supporting plate is installed at the upper end of the interior of the cutting box, the cutting rotary column is rotationally connected to the lower end of the lower arc supporting plate, the left end of the cutting rotary column is rotationally connected to the left end of the interior of the cutting box, and the clamping sheet seat is installed at the right end of the cutting rotary column; the middle of the cutting blade is clamped to the clamping piece seat, the locking piece nut is in threaded connection to the right