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CAM2

2019

2018

FARO® Knowledge Base

Creating a GDT Concentricity Call-out in CAM2

CAM2-Beauty.png

Overview

How to apply a GDT concentricity call-out to a feature.

Download a PDF of this procedure:  GDT008: Creating GDT Concentricity Call-out

Preparation

Creating the GDT Call-out

  • Select the GDT tab
  • Highlight the required feature in the Feature panel
  • From the ribbon select GDT008ConcentricitySymbol.jpg Concentricity

The GDT panel will open in the lower LH corner of the UI

GDT008Fig1.jpg

Note: If the GDT icon is ‘greyed-out’ this details that the selected feature does not support this call-out.

  • Within the GDT panel:
    1. Click into the tolerance, and enter the required value
    2. Select the required datum
      GDT008Fig2.jpg

The call-out will be calculated and the result will be shown in the GDT label displayed in the 3D viewer.
GDT008Fig3.jpg

Note: To display results in the GDT label select via View > GDT Label > Level of Detail
GDT008Fig4.jpg

Copying GDT Call-outs to Other features

This allows multiple features of the same type to have the same call-out applied

  • Apply the call-out to the first feature
  • Highlight the first feature
  • Right click and select Copy Tolerances
  • Multi-select other features
  • Right click and select Paste Tolerances
  • Message ‘Do you also want to paste the GDT tolerances?’, select Yes

The GDT call-out will be applied to the selected features, and the GDT label will be displayed.

How it’s Calculated

Cylindrical and Conical Features

Concentricity controls the central axis of the measured feature, to a datum feature’s axis. A cylindrical tolerance zone is applied around the datum axis.

The calculated axis of the measured feature, across its full length, must remain within this zone to be deemed as acceptable.

This on a drawing...    Means this when calculated...
GDT008Fig5.jpg GDT008Fig6.jpg

Circles

Concentricity can also be applies to circles, where it controls the center point of the measured feature, to a datum feature’s axis.

In this case a circular tolerance is applied around the datum axis, on the plane of the circle. The center point of the circle must remain within this zone to be deemed as acceptable.

This on a drawing...    Means this when calculated...
GDT008Fig7.jpg GDT008Fig8.jpg

See Also

 

Keywords:

GD&T, Help Sheet, GDT008