Patent ID: 6874398

Claim:
An assembly for cutting a tube which is rotatable about a center axis and which has a tube wall, comprising: a first cutting wheel located inside the tube and rotatable about an axis of rotation parallel with the center axis of the tube, the first cutting wheel having a peripheral cutting edge and a peripheral tube supporting surface to be engaged with the tube wall; a second cutting wheel located outside the tube and opposite the first cutting wheel, and rotatable about an axis of rotation parallel with the center axis of the tube, the second cutting wheel having a peripheral cutting edge and a peripheral tube supporting surface to be engaged with the tube wall, and means for bringing the cutting wheels into cutting engagement with the tube wall in a cutting direction perpendicular to the center axis of the tube for cutting through the tube wall at a cutting location; wherein at least one of the cutting wheels has a peripheral elastic member which is configured to be engaged with the tube wall at the cutting location and which is compressible in a direction parallel with the cutting direction towards the tube supporting surface of the opposite cutting wheel to reduce deforming forces exerted on the end of the tube; wherein said at least one peripheral elastic member comprises an annular elastic element that is fastened to the front surface of the associated cutting wheel; and wherein the annular elastic element is clamped against the front surface of the associated cutting wheel by means of a clamping disc which is fastened to said front surface.