Planetary gear tooth shape machining error measuring device and self-adaptive on-machine measuring method

The invention provides a planetary gear tooth shape machining error measuring device and a self-adaptive on-machine measuring method, and belongs to the field of on-machine detection of planetary gears. The problem that the machining quality and the production efficiency are affected due to the fact that existing planet gear tooth shape machining errors are not easy to achieve on-machine measurement is solved. The detection device is characterized in that a height-adjustable vibration reduction foot pad is connected with a first platform, a second platform is in transmission connection with the first platform and a third platform through lead screws, the third platform is connected with a rotating platform through a vibration reduction ring, the rotating platform is connected with a telescopic column, and the telescopic column is connected with a fourth platform; the fourth platform is in transmission connection with the mounting table through a lead screw; and the structured light measuring head is axially m