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- W4313395916 endingPage "JAMDSM0012" @default.
- W4313395916 startingPage "JAMDSM0012" @default.
- W4313395916 abstract "Fast tool servo (FTS) in ultra-precision diamond turning is an efficient technique for high-precision fabrication of freeform optics. However, the currently adopted constant scheme for control point sampling takes no account of the shape variation of the desired surface, which might lose some micro features and result in low form accuracy and non-uniform surface quality. Facing this issue, this manuscript proposes a novel adaptive control points sampling strategy, which improves the form accuracy and keeps as many as the micro surface features. In the optimization method, the sampling stepovers between two adjacent control points are actively adjusted to adapt to the surface profile variation. By adopting this method, the control point sampling induced interpolation error is constrained within the desired tolerance and eliminates the lack/over-definition of control points in the machining area. The feasibility of the proposed optimization method is demonstrated by both theoretical simulations and fabrication experiments of sinusoid freeform surfaces. Compared with the constant sampling method, both the theoretical predicted and experimental measured form error of the proposed method is remarkably reduced by about 35 % with the same amount of control points. This technique provides a new route to allocating control points in FTS diamond turning to achieve high form accuracy and machining efficiency in the fabrication of freeform optics." @default.
- W4313395916 created "2023-01-06" @default.
- W4313395916 creator A5027337565 @default.
- W4313395916 creator A5065673386 @default.
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- W4313395916 date "2023-01-01" @default.
- W4313395916 modified "2023-10-17" @default.
- W4313395916 title "Optimization of fast tool servo diamond turning for enhancing geometrical accuracy and surface quality of freeform optics" @default.
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- W4313395916 doi "https://doi.org/10.1299/jamdsm.2023jamdsm0012" @default.
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