The invention relates to a scan detection device for a motor
stator, which uses a working motor to drive a detecting
magnet to rotate and scan along the near surface of the motor
stator being detected, and the
magnetic flux variety of the detected motor
stator generated by the rotation and canning makes the detected motor stator to generate induced
electromotive force, and the quality of the detected stator can be determined through detecting the circumferential induced
electromotive force distribution curve of the detected stator by a measurement
control unit and comparing with the circumferential induced
electromotive force distribution curve of the qualified stator with the same size. A realization method of the invention is as follows: the device is composed of a working motor, a fixing bracket, a
position sensor, a
coupling spindle, a
gyrator body, the detecting
magnet and the measurement
control unit. The
position sensor is divided into two parts of a moving component and a position detecting component, and two components are respectively fixed on a rotating shaft or the
coupling spindle of the working motor and on the fixing bracket. The
gyrator body is fixed on the rotating shaft or the
coupling spindle of the working motor, and the detecting
magnet is fixed on the
gyrator body and near the surface of the detected motor stator. The detecting device not only can detect the malfunction of the stator, but also can indicate which position or
azimuth has quality problem around the circumference of the stator.