Reporting the T deviation of a point

Reporting the T deviation of a point

When no CAD is available for reporting Cloud to CAD, in particular on manual CMM's, CMM-Manager offers a solution to report an actual point that was not measured in precisely the correct 3D location by projecting that point to a position directly above the nominal point.  The error can then be reported along the nominal vector of the point as shown here.



If CAD is available, Cloud 2 CAD will always be more accurate, especially if a Cloud Best Fit is done before output.

T Value will always have a small amount of error due to the surface deviation between where the point was actually taken and the surface at the nominal location.  The worse the local surface deviation, and the farther the actual point was taken from the nominal, the greater this error may be.



    • Related Articles

    • Cloud-to-CAD / Curve Deviation

      Cloud-to-CAD is a very powerful reporting tool and allows data to be reported in many different ways. As the name implies, a CAD model is required to report a surface profile. For all examples, the following CAD model, datum structures, and clouds ...

    • Profile / Cloud to CAD Reporting

      This Knowledge Base article will attempt to explain the basics of Profile and Cloud to CAD/Curve reporting as well as the effects of using the Best-Fit option where available. This example is a 2D example, however, the principles apply to 3D as well. ...

    • GD&T - Composite Position

      This Knowledge Base article describes how to configure and report Composite Position using CMM-Manager. For a detailed description of the Composite Position tolerance and how it is properly applied, refer to the appropriate topic in the current ASME ...

    • MS Excel to AS9102 conversion

      Using CMM-Manager's default MS Excel report output, it is possible to convert directly to AS9102 format as follows. Copy the CMM-Manager Excel report to the Report sheet and press the [Convert] button. Page 1, 2 & 3 of the AS9102 report are populated ...

    • VB Script - Getting Started

      What can I do with VB Scripting? CMM-Manager VB Scripts run in line with program execution and can be used to perform loops and flow control, display custom messages, prompt user for input that then influences program execution - i.e. skip section of ...