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Basics - Optical CMM, Part 2: Fundamentals

January, 2021

Are you looking to learn the fundamentals of optical coordainte measuring machines (optical CMMs) including their capabilities, advantages when compared to other measurement practices, technical tips and next-generation functions? Our free metrology resource website offers key knowledge and information related to dimensional measurement instruments, environment requirements, selecting the right tool for the job, and various inspection processes.


1 Overview

What is an optical coordinate measuring machine (optical CMM)? Also commonly known as a vision measuring machine (VMM). An optical CMM is a 3D measurement system with three-vertical-axis movement systems to construct a spatial coordinate system, the coordinate point cloud can be detected by the sensors with the travel working of three-axis-linear-scales. These sensors include a vision sensor such as a CCD or CMOS camera or laser probe.

2 Capabilities and Advantages

Optical coordinate measuring machines (Optical CMMs) allow for three-dimensional inspection of parts, giving users an advantage over single dimension or 2D measurement instruments such as calipers, micrometers, and large optical comparators. They have the advantage of being a non-contact inspection tool for precision measurements of small targets and parts that are too sensitive for contacts measurement, such as semiconductors, electrical components, and medical products. They are highly accurate, computerized for data collection, and performs complex dimensional inspections.

3 Core Technology and Advancements

Learn about the core technology that drives these tools, and the next-generation optical coordinate measuring machines using the principals of these tools of in new ways to bring added-value to production and quality inspection. Modern optical CMMs are increasingly advancing in measurement accuracy, ease-of-use, automation, and functionality.

Measurement Fundamentals is an informative site offering knowledge related to dimensional measurements in manufacturing, including optical coordinate measuring machine (optical CMM) basics. Visit the site to learn more about the topics above and more!