High-speed high-precision angular contact bearing contact angle measuring method

The invention belongs to the technical field of angular contact bearing contact angle measurement, and provides a high-speed and high-precision angular contact bearing contact angle measurement method. The provided measurement method comprises the following steps of oppositely arranging an industrial camera and an LED light source at the two corresponding sides of a to-be-detected bearing; settingan image acquisition area of the industrial camera; setting a certain point in the image acquisition area as a standard reference position; in a measurement time period, enabling the industrial camera to sequentially record the time when each steel ball passes through the standard reference position and send out a pulse at the same time, and enabling a counter to record once until the number of rotation turns of a retainer reaches a set number of turns, ending measurement and reading the number of rotation turns of an inner ring; obtaining a contact angle of the bearing through calculation; and comparing an actual ti