Detection device and detection method for driving motor shaft

The invention discloses a detection device and a detection method for a driving motor shaft, and belongs to the technical field of detection devices.The device comprises an outer frame, an eccentricity detection mechanism, a helical tooth deflection angle measuring mechanism, an axial measuring mechanism and a control system.The eccentricity detection mechanism comprises a bearing plate arranged in the outer frame and a balancing platform arranged on the bearing plate; a fixing shaft is arranged in the center of the upper end face of the balancing table, gravity sensors are arranged between the four corners, with the fixing shaft as the center, of the lower end face of the balancing table and the bearing plate, and the gravity sensors are connected with a control system; whether the driving motor shaft is eccentric or not can be judged according to the detected numerical value deviation of the four gravity sensors, the problem of eccentricity caused by uneven raw material materials or machining errors is avoi