Roller screw-down and feed-in angle combined adjusting device

The invention discloses a roller screw-down and feed-in angle combined adjusting device. The device is characterized by comprising a machine frame, a screw-down assembly, a feed-in angle adjusting assembly and a roller assembly; the rolling mill screw-down assembly can adjust the height of a roller, and a partial cylindrical spur gear is connected to a shaft roller support of the screw-down assembly through bolts and move up and down along with the shaft roller support; and when the feed-in angle is adjusted, the partial cylindrical spur gear and the roller support rotate around the axis of the cylindrical boss, the included angle between the axis of a worm and the end surface of the partial cylindrical spur gear is the lead angle of the worm, and the normal circular pitch of the worm is equal to the circular pitch of the partial cylindrical spur gear. According to the device, independent or combined movement of roller screw-down and feed-in angle adjustment, self-locking of the feed-in angle adjusting assemb