Home Forums CNC Technology Important of CMM Dimensional Inspection in CNC Machining

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  • #1767
    Allen Young
    Participant

    A CMM (Coordinate Measuring Machine) is a computerized inspection device that measures the physical qualities of a part. CMMs can be operated manually or with the help of a pre-programmed control that automates the inspection process. The CMM software can be built to measure traditional print dimensional requirements or model-based definition (MBD) criteria, which are becoming increasingly common in the industry today, especially in aerospace. Modern designed components have an increasing number of non-prismatic characteristics or sophisticated geometric dimensioning and tolerancing (GD&T) that are difficult to measure without specialized inspection equipment or check fixtures. A CMM allows you to measure these complicated features on a variety of items without having to create bespoke tooling.

    #1876
    Graham Steven
    Participant

    The coordinate measuring machine (CMM) has the advantage of being able to accurately measure items that are difficult to measure with other measuring equipment.
    With a hand tool like a caliper or micrometer, it’s difficult to measure the three-dimensional coordinates of a specific point (hole, etc.) from the virtual origin. Other measuring machines have difficulty measuring virtual points and virtual lines, as well as geometrical tolerances, which can be measured using a 3D CMM machine.

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