Patent ID: 8234958

Claim:
A machine tool, comprising: a toolholder mounted to a tool rest, the toolholder including a cutting tool defining a lead angle between a leading edge of the cutting tool and a workpiece and a trailing angle between a trailing edge of the cutting tool and the workpiece, the toolholder having a rotary axis and a rotation axis that is programmable to move to a specific position in sequential or simultaneous synchronization with a movement about the workpiece with respect to at least one linear axis, wherein one of the lead angle and the trailing angle remains constant by controlling the movement of one of the rotary axis and the rotation axis with respect to the workpiece independently of the movement with respect to the at least one linear axis while at least one movement vector of the at least one linear axis is changed, and wherein the lead angle of the cutting tool is used to anticipate interference between the cutting tool and the workpiece.