• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.04a
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• pp.71-74
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• 1996

절삭가공 중에서 구멍가공은 최근 광범위하게 이루어지는 작업의하나이다. 현재 대부분의 구멍가공은 두개의 절삭날을 갖는 Twist Drill에 의해 이루어지고 있다. 이 두개의 절삭날 드릴은 작업능률이 다른 절삭 공구에 비교하여 낮고, 그 가공정도도 충분하지 않다. 본 연구에서는 초경 세개의 절삭날 드릴을 사용하여 구멍가공 실험을 하고, 그 절삭성능과 관련하여가공 구멍의 형상을 측정함에 따라 가공구멍 중심축의 기울어짐, 진원도 및 표면거칠기를 연구하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.11a
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• pp.43-46
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• 2000

Optical triangulation displacement sensors(0TDSs) are widely used for their simple struchlre, high resolution, and long operating range. However, there are several factors that must be taken into account in order to obtain high accuracy and reliability Measurement errors from inclinations a？ an object surface, prohe signal fluctuations generated by speckle effects. power vanation of a light source, electronic noises, and so on. Previous models of OTDSs can not show reasonable behavior as change of surface inclination and shape of light intensity distribution on the detector. In this paper, we propose a new and reasonable modeling for diffise-type OTDSs based on a geometrical optics. To verify propriety of new modeling, we take basic experiments. Shape of light intensity distribution is asymmetric in both simulation result and experimental result. Both simulation result and experimental result show same tendency of light intensity distribution movement as changing surface inclination