Abstract: A device (1) for rolling rings, comprising: a rolling device (10) with a main roll (11) and at least one mandrel roll (13a) onto which a ring is loadable, wherein the rolling device (10) is designed to roll the ring, with the mandrel roll (13a) impacting an interior face of the ring and the main roll (11) impacting an exterior face of the ring ;and a manipulator (20) comprising at least one robot (21) designed to manipulate the ring, comprising loading the ring onto the mandrel roll (13a) and/or unloading the ring from the mandrel roll (13a).

Abstract: In a multi-roll table ring-rolling mill and method, a mandrel roll can be switched from a rolling state into a free-running state, when a predetermined ring diameter is reached, even if the roll gap minimum has not yet been reached, in order to improve the size accuracy of the rolled rings. A mandrel roll table rotating about a mandrel table axle is used, along with at least one main roll rotating about a main roll axle and first and second mandrel rolls that are mounted in the mandrel roll table, and a relief device to relieve at least the first mandrel roll of rolling forces. The main roll axle and the mandrel roll table axle are mounted in unchangeable manner and eccentric to one another, at least during the rolling process. The relief device acts independent of the main roll axle and the mandrel roll table axle are eccentric to one another.

Abstract: In a multi-roll table ring-rolling mill and method, a mandrel roll can be switched from a rolling state into a free-running state, when a predetermined ring diameter is reached, even if the roll gap minimum has not yet been reached, in order to improve the size accuracy of the rolled rings.