Round tooth cutters

A device for removing material from a parent piece, thereby creating one or more chips of removed material while producing a new surface on the parent piece, the device comprising:

• a. a body;
• b. at least one round cutting insert mounted on the body so that an orientation of the cutting insert is characterized by an insert axis lying in a plane having an offset from a reference plane (the X-Z plane) and oriented at an angle measured from an axis (the Z-axis), the cutting insert being free to rotate about the insert axis under the forces of chip formation, the cutting insert comprising:
• i. a rake surface that is outwardly facing relative to the insert axis for forming a chip;
• ii. a flank surface that is oriented relative to a cutting motion so as to provide clearance between the cutting insert and the new surface produced on the parent piece;
• iii. a circular cutting edge at the intersection of the flank surface and the rake surface;
• and
• iv. at least one gap in the cutting edge.

A device for removing material from a parent piece, thereby creating one or more chips of removed material while producing a new surface on the parent piece, the device comprising:

• a. a body that is rotatable about an axis (the Z-axis);
• b. two or more round cutting inserts mounted on the body so that an orientation of each cutting insert is characterized by an insert axis lying in a plane having an offset from a corresponding reference plane (the X-Z plane) and oriented at an angle measured from the axis, at least one cutting insert being free to rotate about its insert axis under the forces of chip formation, each cutting insert comprising:
• i. a rake surface that is outwardly facing relative to the insert axis for forming a chip;
• ii. a flank surface that is oriented relative to a cutting motion so as to provide clearance between the cutting insert and the new surface produced on the parent piece;
• and
• iii. a circular cutting edge at the intersection of the flank surface and the rake surface.