Material cutter clamping collet

A clamping assembly for a cutter assembly comprising:

• a stationary tapered collar extending radially inward towards an axis;
• a clamping sleeve movable along the axis relative to the tapered collar, the clamping sleeve including flexible arms that flex inwardly upon contact with the stationary tapered collar;
• an actuator coupled to the clamping sleeve and configured to move the clamping sleeve along the axis between extended and retracted positions;
• a collet in contact with said clamping sleeve, the collet including circumferentially arranged axially extending fingers, the clamping sleeve forcing the fingers radially inward with the clamping sleeve in the extended position by contact with said tapered collar, and a member biasing the fingers radially outward with the clamping sleeve in the retracted position wherein the collet includes an axially extending opening provided by the fingers and configured to receive material, a pivot comprised of a circumferential slot extending radially inwardly at an axially innermost part of the fingers, the fingers including faces adjacent to adjoining finger faces, and the biasing member arranged between the fingers and configured to bias the fingers away from one another to enlarge the opening.