Tool setting mechanism used for gear hobbing machine

The utility model discloses a tool setting mechanism used for a gear hobbing machine. The tool setting mechanism used for the gear hobbing machine comprises a tool setting mechanism installation seat and a horizontal shaft, wherein the left of the horizontal shaft is fixed with the tool setting mechanism installation seat, the right of the horizontal shaft is fixed with the upper end of a connection frame (3), a tool setting shaft (4) is arranged in an installation hole at the lower portion of the connection frame (3), the tool setting shaft (4) is in clearance fit with the installation hole, is parallel with the horizontal shaft (2) and is located below the horizontal shaft (2), the left end of the tool setting shaft (4) is a tool setting conical portion (4a), a V-shaped tool setting groove (4b) is formed in the right end of the tool setting shaft along the shaft axis, and the inclination of the groove wall of the V-shaped tool setting groove (4b) is equal to the conical degree of the tool setting conical po