Turning – Lathe – Tool and work rest
Reexamination Certificate
2004-06-01
2008-10-21
Fridie, Willmon (Department: 3722)
Turning
Lathe
Tool and work rest
C310S012060
Reexamination Certificate
active
07437980
ABSTRACT:
A high bandwidth rotary fast tool servo provides tool motion in a direction nominally parallel to the surface-normal of a workpiece at the point of contact between the cutting tool and workpiece. Three or more flexure blades having all ends fixed are used to form an axis of rotation for a swing arm that carries a cutting tool at a set radius from the axis of rotation. An actuator rotates a swing arm assembly such that a cutting tool is moved in and away from the lathe-mounted, rotating workpiece in a rapid and controlled manner in order to machine the workpiece. A pair of position sensors provides rotation and position information for a swing arm to a control system. A control system commands and coordinates motion of the fast tool servo with the motion of a spindle, rotating table, cross-feed slide, and in-feed slide of a precision lathe.
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Fridie Willmon
Massachusetts Institute of Technology
Nieves Peter A.
Sheehan Phinney Bass & Green P.A.
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