High Precision Grinding of Large Fresnel Lens Mold

Tatsuya Furuki; Hirofumi Suzuki; Mutsumi Okada; Yutaka Yamagata; Shinya MORITA

doi:10.4028/www.scientific.net/KEM.516.629

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 516High Precision Grinding of Large Fresnel Lens Mold

High Precision Grinding of Large Fresnel Lens Mold

Abstract:

Demand for glass Fresnel lenses is increasing in solar panel manufacture in order to increase power efficiency. Glass lenses are usually moulded using a glass moulding method with tungsten carbide moulds. In this study, large Fresnel lens moulds made of tungsten carbide are tested to be ground by a simultaneous 2-axis (Y, Z) controlled grinding method. The resinoid bonded diamond wheel is trued with a rare metal truer to increase the sharpness of the wheel edge. In the grinding test of the tungsten carbide mould, a form accuracy of less than 0.8 μm P-V and surface roughness of 18 nm Rz are obtained, and it is clarified that the proposed grinding method is useful for Fresnel grinding.

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Periodical:

Key Engineering Materials (Volume 516)

Pages:

629-633

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.516.629

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Online since:

June 2012

Authors:

Tatsuya Furuki, Hirofumi Suzuki, Mutsumi Okada, Yutaka Yamagata, Shinya MORITA

Keywords:

Diamond Wheel, Fresnel Mould, Grinding, Tungsten Carbide

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References

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