Steering device for stone cutting

The steering device for stone cutting comprises a worm gear speed reducer, an output shaft is arranged in the worm gear speed reducer, a first steering gear box body is detachably arranged at one end of the output shaft, and a first driving bevel gear and a first driven bevel gear are arranged in the first steering gear box body; a first cutter mounting shaft is fixedly arranged in the middle of the first driven bevel gear; the other end of the output shaft is fixedly provided with a coupler, the end, away from the output shaft, of the coupler is fixedly provided with a connecting shaft, the end, away from the coupler, of the connecting shaft is sleeved with a second steering gear box, and a second driving bevel gear and a second driven bevel gear are arranged in the second steering gear box. A second box body through hole is formed in the position, aligned with the second driven bevel gear, of the second steering gear box body, and a second tool mounting shaft is fixedly arranged in the middle of the second