Abstract
For most of the high-speed hole diameter measuring process, a contact measuring method is undesirable due to its slow and destructive touching process. Thus, an optical method is usually chosen for non-contact measurement. Unfortunately, for most holes in precise manufacturing, especially those with a high aspect ratio, the optical method cannot be used. In our study, we developed a simple and low-cost precision capacitive hole measuring system. By using a simple alignment mechanism, we prove that a high-resolution hole diameter can be achieved. Comparing a traditional measuring method like coordinate measuring machine with our system, over 99% correlation is easily obtained. The paper also presents a multilayer hole measuring probe and sensor probe for non-through-hole measurement.
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Lee, N.K.S., Chow, J.K.H. & Chan, A.C.K. Design of precision measurement system for metallic hole. Int J Adv Manuf Technol 44, 539–547 (2009). https://doi.org/10.1007/s00170-008-1848-z
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DOI: https://doi.org/10.1007/s00170-008-1848-z