Abstract
Quality control in industrial environments is associated with the verification of compliance with design specifications, among which we find dimensional verification. Coordinate Measuring Machines (CMMs) have been traditionally used, which allow traceable 3D measurements of the parts. However, at the micro- and nano-scale, these types of tools cannot always be applied. Parts of these dimensions made with processes such as Direct Metal Laser Sintering (DMLS) may suffer damage and not meet specifications. Among the most widely used quality control tools in industry and research centers to perform measurements in these scales are optical measuring instruments. Some of these instruments add the Z-coordinate to the bidimensional measurements of a traditional microscope, allowing 3D measurements of the samples to be obtained and used as a small-scale CMM. In this article we present a calibration procedure to provide traceability to the measurements made on the Z axis of a confocal microscope.
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