Workpiece rotating center measuring device and method

The invention discloses a workpiece rotating center measuring device. The device comprises a characteristic die, a data monitoring device and a central control device. In the working process, a controller controls an image collecting device to collect images of the characteristic die and a measured workpiece, transmits the images to a data processing device to be stored and then controls the measured workpiece to rotate; a data collecting device begins to collect data of the measured workpiece, and meanwhile, the image collecting device collects the images at the same time, and through multi-time image collection and data collection, the data processing device carries out analysis comparison and processing on the images and data obtained multiple times; finally, the workpiece rotating center is found, and the aim of measuring the workpiece rotating center is achieved, so that the quality of a CT image is effectively improved. The invention further discloses a workpiece rotating center measuring method. Throug