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Evolutionary grinding model for nanometric control of surface roughness for aspheric optical surfaces
Jeong-Yeol Han1, Sug-Whan Kim, Inwoo Han
1Major of Astronomy and Space Science, University of Science and Technology, Daejeon 305-333, Korea. jeongyeol.han@gmail.com
Optics Express
|June 11, 2008
Summary
A novel evolutionary grinding model precisely controls material removal for aspheric surfaces. This process achieves nanometric accuracy, improving surface roughness control in precision manufacturing.
Area of Science:
- Materials Science
- Mechanical Engineering
- Manufacturing Technology
Background:
- Precision manufacturing of aspheric surfaces requires advanced material removal control.
- Achieving nanometric accuracy in surface roughness is critical for optical and semiconductor applications.
Purpose of the Study:
- To develop and validate a new evolutionary grinding process model for nanometric control of material removal.
- To enhance the precision and repeatability of machining aspheric surfaces.
Main Methods:
- Development of an evolutionary process model incorporating a growing database.
- Implementation of an evolving, multi-variable regression equation for process control.
- Integration of an adaptive correction factor for target surface roughness (Ra).
Main Results:
- Demonstrated evolutionary controllability of machining performance.
- Achieved a final grinding accuracy of -0.2+/-2.3(sigma) nm Ra over seven runs.
- Successfully controlled target surface roughness from 115 nm to 64 nm Ra.
Conclusions:
- The developed evolutionary grinding model enables precise nanometric control of material removal.
- The model's adaptive features enhance machining accuracy and surface roughness control.
- This approach offers a significant advancement in precision grinding of aspheric surfaces.
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