Patent ID: 7338273

Claim:
A cutter machine comprising: a cutter shaft; a knife holder mounted onto said cutter shaft at the center portion of said knife holder; a knife for cutting a material to be cut, said knife being mounted onto the outer circumference of said knife holder; a driving apparatus for rotating said cutter shaft, wherein the material is cut with said knife by rotating said knife holder with said cutter shaft, wherein said knife holder is separated into a fixing member, mounted onto an end of said cutter shaft adjacent said knife and a mounting member onto which said knife is mounted, and wherein said mounting member is pivotally supported around at least two axes with respect to said fixing member; and a rocking ring interposed between said fixing member and said mounting member, wherein said rocking ring extends around said fixing member such that said fixing member extends substantially completely through said rocking ring, wherein said rocking ring is pivotally mounted to said fixing member such that said rocking ring is capable of pivoting relative to said fixing member only about a fixed first axis, and said mounting member is pivotally mounted to said rocking ring such that said mounting member is capable of pivoting relative to said rocking ring only about a fixed second axis, wherein said mounting member is capable of pivoting with respect to said fixing member about only said first and second axes, and whereby said fixing member does not pivot with respect to said cutter shaft during pivoting of said mounting member via said rocking ring.