Ring rolling device for expanding ring blank, has rotatable revolver drum that is arranged relative to drive roller that ring blank is rolled during rotation of revolver drum between mandrels rotatably mounted on revolver drum

摘要

The ring rolling device has a drive roller (1) and a rotatable revolver drum (3) in which five mandrels (2) are rotatably mounted. The mandrels are moved toward and away from the drive roller by rotating the revolver drum. The revolver drum is arranged relative to the drive roller that a ring blank (9) is rolled during the rotation of the revolver drum between the mandrels. An independent claim is included for ring rolling method.