Application:
Milling a lens array in Electroless Ni mold insert.
Process:
Using 3 axes of contouring motion (X,Z,C or X,Y,Z) in combination with a high speed milling spindle, mill aspheric concave lenses into Ni plated substrate.
Part Configuration:
2mm Diameter with 1mm sagital depth, 3 X 3, aspheric lenslet array on 3mm pitch. The part is held with vacuum on the C-Axis Chuck.
Machining Parameters:
Tooling Spindle Speed: 35,000 rpm Linear federate: 25mm/min Depth of cut: Variable
Tool Configuration:
0.5mm radius, single flute, diamond, ball, end mill
Form Accuracy:
Deviation of lenslets on position in the array, 0.35µ P/V (14 µ” P/V) (graph scale in mm)
Surface Roughness:
2.2 nm Ra
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