Connecting chuck for numerical control longitudinal cutting lathe feeder

The utility model discloses a connecting chuck for a numerical control longitudinal cutting lathe feeder, which belongs to the field of numerical control lathes and comprises a guide shaft, a left lug plate is fixedly clamped on the left side of the guide shaft through a bolt, a right lug plate is fixedly clamped on the right side of the guide shaft through a bolt, a left support rod is fixedly connected on the rear side of the left lug plate, and a right support rod is fixedly connected on the rear side of the right lug plate. A left mounting plate is fixedly connected to the rear side of the left supporting rod, a right mounting plate is fixedly connected to the rear side of the right supporting rod, a sliding groove is formed in the lower end of a guide shaft, and the upper end of a plug pin is arranged in the sliding groove in a sliding mode, so that a lantern ring is limited, a shaft chuck is indirectly limited, the shaft chuck is prevented from rotating, and axial movement of the shaft chuck is not affe