Goal: Demonstrate freeform surface finish and form accuracy by diamond turning an aspheric toric on the Freeform® L Ultra Precision Machine platform using Adaptive Control Technology (ACT). Process: XZC diamond turning with Y axis active conducted at customer facility. Part Details: • Material: Nickel Phosphorus plated steel Part photo Process Details: • Tool: Single point diamond tool • Tool radius: 0.3 mm • Work speed: 1200 RPM • Feed rate: 1.2 mm/min • Finish pass: 16 min • Coolant: Odorless mineral spirits (OMS) Results: • Form accuracy: 76 nm PV (12 nm RMS) • Surface finish: 0.88 nm Ra Profile measurements along 2 primary medians White light interferometer measurement
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