Ring rolling machine
AssigneeThyssen Industrie AG
InventorHeinz Kreiskorte
Life of this patent
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Abstract
A ring rolling machine for rolling a ring blank engaged over a mandrel roll which has an outside diameter smaller than the inside diameter of the mandrel roll comprises a rotatable main roll having an annular curved surface. The main roll is rotated about a fixed axis which is spaced at a fixed distance from the mandrel. Its curved surface is divided into a loading zone having a radius less than the spacing from said main roll access to the ring blank, a rolling zone having a variable radius curved with a continuously increasing value and a rounding zone extending between the rolling zone and the loading zone which is of substantially constant radius.
Claims7
A ring rolling machine for rolling a ring blank engaged over a mandrel roll which has an outside diameter smaller than the inside diameter of the ring blank, comprises a rotatable main roll having an annular curved surface, means rotatably supporting said main roll for rotation about an axis at a fixed distance from said mandrel, said surface being divided into a loading zone having a radius less than the spacing from said main roll axis to said ring blank, a rolling zone having a variable radius being curved with a constantly increasing value and including at least a portion of a radius to engage the ring blank during rotation to roll the ring blank to a defined shape, and a rounding zone extending between said rolling zone and said loading zone of a substantially constant radius.
Dependencies are inferred from the claim text.