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Adaptive Spiral Tool Path Generation for Diamond Turning of Large Aperture Freeform Optics
Dongfang Wang1,2, Yongxin Sui3,4, Huaijiang Yang5,6
1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China. wdfszf@163.com.
Materials (Basel, Switzerland)
|March 13, 2019
Summary
This study introduces adaptive tool path generation (ATPG) for slow tool servo (STS) diamond turning. ATPG enhances machining efficiency and surface quality for large optics by optimizing tool paths.
Area of Science:
- Manufacturing Engineering
- Optical Engineering
- Materials Science
Background:
- Slow tool servo (STS) diamond turning is established for freeform optics.
- Challenges include low efficiency, side-feeding motion fluctuations, and redundant control points for large optics.
Purpose of the Study:
- To present a novel adaptive tool path generation (ATPG) strategy for STS diamond turning.
- To address limitations of current methods in machining large aperture freeform optics.
Main Methods:
- ATPG independently controls sampling intervals based on interpolation error and cutting residual tolerance.
- Side-feeding motion is smoothed to minimize fluctuations.
- Theoretical and experimental comparisons with commercial software (DiffSys) were performed.
Main Results:
- ATPG significantly reduces the number of control points.
- Vibration in side-feeding motion is decreased.
- Machining efficiency is improved while maintaining surface quality for large freeform optics.
Conclusions:
- ATPG offers a superior approach for efficient and high-quality machining of large aperture freeform optics.
- The method optimizes tool path generation, overcoming key limitations of traditional STS diamond turning.
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