how make Class A surface analysis in catia?


You have check the connection between the faces. Class A means
G0 Point
G1 Tangent
G2 Curvature

  1. Step 1:

    Check the connection between the three faces.

  2. Step 2:

    open "connect checker analysis"

  3. Step 3:

    G0 is OK between green and blue

  4. Step 4:

    Tangency (G1) is OK

  5. Step 5:

    Curvature (G2) is OK
    so--> CLASS A

  6. Step 6:

    G0 is OK between blue and yellow

  7. Step 7:

    G1 is OK

  8. Step 8:

    G2 is NOT OK, 98,72% difference
    so--> NO class A


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