Inverted numerically controlled lathe for precisely processing medium-large specification bearing ring

The utility model discloses an inverted numerically controlled lathe for precisely processing a medium-large specification bearing ring, which comprises a lathe body and an upright column. A horizontal guide rail is arranged on one side of the lathe body, a fixed knife rest is mounted on the other side of the lathe body, the horizontal guide rail is provided with the upright column, a perpendicular guide rail is disposed on the upright column, the perpendicular guide rail is provided with a carriage, a main shaft, a main shaft motor and a transmission gear box are mounted on the carriage, clamps are arranged at the lower end of the main shaft, the carriage perpendicularly moves along the perpendicular guide rail driven by a Z shaft motor mounted on the upright column, the upright column horizontally moves along the lathe body horizontal guide rail driven by an X shaft motor arranged on the lathe body, and one side of the lathe body is provided with a workpiece automatic feeding and discharging and transmissio