Verification of New Sampling Methods On Small Scale Free Form Surfaces

The three recently developed algorithms by Obeidat and Raman in 2009 for sampling free form surfaces are applied on small scale parts created using milling machine. The three proposed algorithms and the two existing algorithms (equiparametric approach, and the patch-size-based sampling method) are applied in sampling the measuring points. A Browne Sharpe MicroVal PFX™ 454 CMM was used in the measuring process. The comparison between the five algorithms shows that a reduction in the number of points of 73% with reduction in the accuracy of 7.5 % can be achieved in very complicated surfaces. A low inspection time is achieved using the proposed algorithms.