Contacting Feature (CF) for datum systems

[[Ma...]]

Hi

Are there any suggestions how to evaluate contacting features in Zeiss Inspect 3D 2025 according ISO 5459 (e.g. Rule 5 and Annex Example 1)

In the attached picture the datum B should not be the axis of the hole, but the contacting line given by B1. Hence the specification of B[CF] in the profile tolerance.

I was unable to find any ideas in the help or here in the forum.

Thanks for any inputs.

Martin

[[Ma...]]

Does B contains only B1 point and is it controling only position in one direction?

I would imagine in Calypso to have 2d line or recalled points into fixed cylinder with restrained vectors to comply with ISO 5459.

[[Di...]]

Hi Martin,

maybe Construct Touch cylinder can help you here. As this does what you need.

The drawing is also a bit ambiguous here as well. A better approach would be to use it based on the example from ISO 5459:2024 Figure 24.

And in the Note 1 for figure 24 you'll find exactly what the software does here for you. So you can simply add the actual axis of the cylinder cylinder as a datum in the Create Datum Dialog after this workflow.

Hope this helps.