Actuating shaft displacement detection microstructure and precision manufacturing process thereof

The invention provides an actuating shaft displacement detection microstructure and a precision manufacturing process thereof, and relates to the technical field of machinery manufacturing. The method comprises the following steps that a plurality of annular grooves are machined in the outer surface of the actuating shaft body in the axial direction; a first coating in the annular grooves is sprayed at two ends of the actuating shaft body by adopting a surface coating technology, and a second coating is sprayed in the annular groove between the annular grooves at the two ends; the surface coating is trimmed by using a precision machining technology, so that an annular structure in which a coating material and a shaft body material are alternately distributed along the axial direction is formed on the surface of the actuating shaft. The actuating shaft displacement detection microstructure can be used for monitoring an on-machine displacement state of an aircraft actuating shaft, and has excellent performances