Why is preparation and packaging so important, and what can happen if a CMM machine is not packed properly? The biggest concern is physical damage to the CMM table and superstructure. Because most CMMs are designed and built as a single unit, once each one is assembled at the factory, there are only basic components that can be dismantled or removed for shipment. For instance, the large carriage (bridge) of a CMM, which typically rides on a granite surface plate is installed in the factory and is never designed to come off. The reason for that is because it creates the high precision structural frame and measuring volume upon which everything is measured.
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