The invention discloses an upper
actuator of a drilling and riveting
machine. The two ends of the
station rotating mechanism are rotationally connected to the A-axis driving end and the A-axis driven end correspondingly. The tool
magazine mechanism and the pressure foot mechanism are both arranged on the side, away from the cross beam, of the
station rotating mechanism. A drilling
station, a gluing station, a pin inserting station, a riveting station and a milling station are arranged in the station rotating mechanism in the circumferential direction, all the stations are configured to rotate around the central axis of the station rotating mechanism and stop after rotating to the selected station, and the selected station moves in the height direction of the station rotating mechanism and extends into the pressure foot mechanism. Drilling, gluing,
rivet inserting, riveting and milling of the
skin are achieved; and the C-axis driving end and the A-axis driving end are linked, so that the axis of the pressure foot mechanism and the normal of the
skin surface are coaxial. Therefore, corresponding drilling, gluing,
rivet inserting, riveting and milling functions can be automatically executed, the
machining efficiency is improved, and the product quality stability is guaranteed.