Application: Spiral milling of a 3 dimensional continuous surface. Process: Using 3 axes of contouring motion (X,Z,C) in combination with a high speed milling spindle, flycut a convex optical surface in copper. Part Configuration: 20mm diameter, 15mm radius, convex, copper part mounted in work holding fixture on the C-axis vacuum chuck Copper sphere generated with spiral milling Machining Parameters: - Tooling spindle speed: 10,000 rpm - Work holding spindle speed: 500 rpm - Feed per revolution: 45µm. Tool Configuration: 0.75mm radius tool on 65mm swing diameter. Form Accuracy: 0.130 µm P/V (5.2 µ” P/V) Surface Roughness: 4.3nm Ra
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