Patent ID: 8100040

Claim:
A rotary cutting device comprising: a machine frame; a cutting tool which is rotatable about a rotational axis on the machine frame; an anvil roller with a cutting support which is rotatable about a rotational axis, the cutting support comprising a support sleeve which surrounds a base body of the anvil roller; a cutting edge being arranged on said cutting tool for cutting a web of material that is fed between said cutting tool and said anvil roller and which co-operates with said cutting support, wherein said cutting edge and said cutting support are made of a hard metal at least in the surface regions thereof; at least one support ring with a support surface mounted on said cutting tool for supporting said cutting tool relative to said anvil roller; wherein: said cutting edge is set back relative to the support surface in a radial direction with respect to said rotational axis of said cutting tool, the radial spacing between said cutting edge and said support surface being formed in dependence on the modulus of elasticity of said at least one support ring in such a manner that said cutting edge almost touches said cutting support when a bias force effective between said cutting tool and said anvil roller is exerted; and the hard metal comprises one of: (i) a sintered material comprising a metallic hard material based on tungsten and a binding agent based on cobalt; or (ii) a sintered material comprising a hard material incorporating titanium carbide.