Unit Basis

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Unit Basis

Unit Basis or Rate of Change maximum amount of variation that can occur between any two points within a defined distance. In 3DEXPERIENCE, Rate of Change (Unit Basis) can be applied to a Profile of a Surface, Profile of a Line, Flatness and Straightness.

 

1. Search and open a 3D Part part or assembly

2. Switch to the App to Functional 3D Tolerance

3. Launch the Tolerancing Advisor

4. Select an edge or a surface to tolerance

5. Select Profile, Flatness or Straightness (apply no DRF)

 

Unit Basis 1

 

6. Select the Unit Basis tab

 

Unit Basis 2

 

7. Select the Applied on Unit Basis option

8. Select the Refinement Tolerance option

9. Apply a Numerical Value and Length to apply a Rate of Change

Unit Basis 3

Notes: To see Rate of Change (Unit Basis) in 3DCS, look up the DCS GD&T Options page in this Help File.