Grinding wheel deviation correcting mechanism for numerical control cylindrical grinding machine

The utility model relates to the field of numerical control grinding machines, and discloses a grinding wheel deviation rectifying mechanism for a numerical control cylindrical grinding machine, which comprises an outer shell, a driving motor is arranged below the outer part of the outer shell, one side of the output end of the driving motor is fixedly connected with a grinding wheel, and the two sides of the outer part of the outer shell are in threaded connection with limiting bolts; one end of the exterior of the limiting bolt is rotatably connected with a fixing plate, one side of the exterior of the fixing plate is fixedly connected with a spherical shell sleeve, an inner cavity of the spherical shell sleeve is rotatably connected with a ball, and through rotation of the limiting bolt, the fixing positions of the spherical shell sleeve and the ball on the two sides can be conveniently adjusted; the outer sides of the two balls are tightly attached to the corresponding side of the outer portion of the gri