• Title/Summary/Keyword: probe slip error

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An Experimental Study on Selecting the Diameter of Probe Stylus of a Coordinate Measuring Machine in Measuring the Edge Profile of High Pressure Compressor (압축기 블레이드의 Edge 형상 측정시 3차원 측정기의 탐침 볼 직경 선정을 위한 실험적 연구)

  • Joung, Soo-Ho;Byun, Jai-Hyun
    • IE interfaces
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    • v.15 no.4
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    • pp.432-438
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    • 2002
  • When the trailing edge and leading edge of an airfoil contour of high pressure compressor blades are measured, there exists a measurement error due to the size of the probe stylus ball diameter. In the paper an experimental study is provided to determine the optimum diameter of the probe stylus in inspecting the airfoil of the high pressure compressor blade. The measurement and analysis procedure suggested in this paper will be helpful to those who are involved in measuring and inspecting various types of blades.

A Study on Fitting the Edge Profile of Airfoil with Coordinate Measuring Machines (3차원 측정기를 이용한 Airfoil Edge 형상의 Fitting 방법에 관한 연구)

  • Khang, Jin-U;Byun, Jai-Hyun
    • IE interfaces
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    • v.13 no.4
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    • pp.703-708
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    • 2000
  • In manufacturing processes, manufacturing features always deviate somewhat from their nominal design specifications due to several types of errors. This study suggests a fitting algorithm of the geometric profile parameters of leading and trailing edges for turbine compressor airfoils. In reality, industry personnels inspect the airfoil profile by trial-and-error method to determine the geometric feature parameters. In this study we propose an exploration approach based on factorial design with center point to minimize the effect of measurement errors caused by probe slip. By adopting the fitting method developed in this paper, one can enhance the precision and efficiency of fitting the airfoil edge profile.

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