High speed laser-assisted diamond turning of tungsten carbide molds: an alternative to ultra-precision grinding

Sai Kode; Hassan Shirzadi Jahromi

doi:10.1117/12.3028867

30 September 2024 High speed laser-assisted diamond turning of tungsten carbide molds: an alternative to ultra-precision grinding

Sai Kode, Hassan Shirzadi Jahromi

Author Affiliations +

Proceedings Volume 13134, Optical Manufacturing and Testing 2024; 131340J (2024) https://doi.org/10.1117/12.3028867
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

The introduction of laser-assisted technology by the OPTIMUS platform has enabled the efficient ultra-precision diamond turning of tungsten carbide, wherein a laser beam is precisely delivered through a diamond cutting tool to augment the diamond cutting edge with additional photon energy. This method effectively reduces the reliance on mechanical energy by a diamond cutting tool alone. Building on our prior research that explored the impact of tool rake angle on cutting depth under constant load, this study explores the combination of the optimal tool rake angle with relatively high laser powers useful for high Material Removal Rate (MRR). Initial results show the possibility to complete a pre-polish ready optic of nearly 5 mm diameter aperture within 20 mins versus an estimated 2 – 3 hours when compared to a similar process using traditional ultra-precision grinding, while preserving form irregularity and surface finish. With the MRR nearly 10 times higher than conventionally using ultra-precision grinding, laser assisted diamond turning of tungsten carbide is a revolutionary technology that can be considered for high-volume manufacturing of tungsten carbide molds used in glass optics. Furthermore, this study includes a comparison of advantages and limitations of each technology.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sai Kode and Hassan Shirzadi Jahromi "High speed laser-assisted diamond turning of tungsten carbide molds: an alternative to ultra-precision grinding", Proc. SPIE 13134, Optical Manufacturing and Testing 2024, 131340J (30 September 2024); https://doi.org/10.1117/12.3028867

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