CMM Quarterly Press Release


Werth Inc. Fiber Probe

It Goes Where No Probe Has Gone Before

The Werth Fiber Probe can be as small as 20µm in diameter to measure inside of small features such as tiny holes and slots.

Previously, features under around 300µm were either measured optically at the surface of the part or measured by inserting very small feeler gage pins. The first method provided no information about the characteristic inside the cylinder or slot. The second method generally provided whatever information that the operator wanted to report. The self illuminated sphere of the Fiber Probe is positioned via CNC positioning into the hole and slightly deflected on the workpiece. The sphere is mounted exactly in the focal plane of the optics and its deflected position is measured optically. Thus, extremely accurate and repeatable measurements inside tiny features can now be made non-destructively on a production basis. Calculations of cylindricity, taper, perpendicularity, and vector angles of holes are now possible with the Werth Fiber Probe.

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