Experimental investigation on the effect of diamond type on the performance of single-point diamond turning (SPDT) of <111> silicon

Jayesh Navare; Charan Bodlapati; Robert Turnbull; Yuxiang Zhong; Hossein Shahinian

doi:10.1117/12.2602741

28 October 2021 Experimental investigation on the effect of diamond type on the performance of single-point diamond turning (SPDT) of <111> silicon

Jayesh Navare, Charan Bodlapati, Robert Turnbull, Yuxiang Zhong, Hossein Shahinian

Author Affiliations +

Proceedings Volume 11889, Optifab 2021; 1188917 (2021) https://doi.org/10.1117/12.2602741
Event: SPIE Optifab, 2021, Rochester, New York, United States

Abstract

This paper investigates the impact of diamond crystal type on single point diamond turning of single crystal silicon oriented at the <111< direction. The sample has a diameter of 85 mm with a concave base radius of curvature of 291 mm. The tools are made of single crystal diamond formed naturally (hereby referred to as natural diamond) and under lab controlled highpressure high-temperature conditions (hereby referred to as synthetic diamond). The tools have similar geometries of 0.5 mm nose radius, -25° rake angle. The natural diamond is oriented such that the top face of the diamond stone is a {100} plane and the cutting occur in the <110> direction relative to the stone. The synthetic diamond stone is oriented in the {100} plane with the cutting happening in the <100> direction. It is seen that, on average, the synthetic tool can cut approximately 38.5% longer distances without inducing significant brittle fracture on the surface.

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Citation Download Citation

Jayesh Navare, Charan Bodlapati, Robert Turnbull, Yuxiang Zhong, and Hossein Shahinian "Experimental investigation on the effect of diamond type on the performance of single-point diamond turning (SPDT) of <111> silicon", Proc. SPIE 11889, Optifab 2021, 1188917 (28 October 2021); https://doi.org/10.1117/12.2602741

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