Advances in coordinate-measuring-machine technology include sensing variety, more capable software and the ability to function on the shop floor. Here's a look at what's new. Since their invention in the late 1950s and gradual introduction into manufacturing through the early '60s, coordinate measuring machines (CMMs) have undergone a host of advancements. These continue to make life easier for quality engineers or manufacturing employees charged with making sure parts meet customer specs. CMMs vary in size from portable units to desktop stations and large fixed-location machines. Basically, CMMs establish the x-, y- and z-axis coordinates of a point on the surface of a part. Usually, a number of these points are measured on a particular part and compared to reference points of specified parts to ensure accurate production.
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