Rotational Cutting Tool for Trimming Workpiece

A rotational cutting tool which is operably rotated for trimming a workpiece comprising:

• a body including a connecting end for engaging with a driving tool and a cutting end for engaging with the workpiece, wherein the body is rotatable about a rotation axis, wherein the connecting end and the cutting end rotate about the rotation axis upon rotation of the body, wherein an inner periphery of the cutting end defines a receiving space for receiving the workpiece, wherein the receiving space has a conic surface which extends radially and obliquely with respect to the rotation axis, wherein the receiving space includes a first ridge forming at least one cutting edge for trimming the workpiece, wherein the at least one cutting edge extends radially and obliquely with respect to the rotation axis, and wherein the at least one cutting edge extends curvedly and has a curved contour.