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FTS (Fast Tool Servo) has always been an important method for manufacturing non-axisymmetric optical surface. In this paper, a novel tool path planning method is presented which plans tool path in two coordinate directions of a parallel structure 2 DOFs FTS simultaneously. Comparing with single DOF FTS, this method has significantly improved the ability of producing non-axisymmetric optical surface, such as ring torus surface

The Tool Path Planning for Ring Torus Optical Surface Diamond Turning with Parallel 2DOF Fast Tool Servo