To create a 3D Spline Curve:-
? Click “Right VIew” icon
? Click “3D Curve” icon
? Draw a curve with 3 control points as shown
? Click ok to complete
To create a Curve on a Surface:-
? Click “Curve on Surface” icon
? Click on “Surface 7”
? Draw a curve with 3 control points as shown
? Click ok to complete
? Similarly, draw another 2 Curves on the same surface as shown
To Cut a surface by curves:-
? Click “Break Surface or Curve” icon
? Select “Break Surfaces by Curves” as Type
? Select “Along Compass” as direction
? Select “Surface 7” as Cut
? Multi-Select the three curves (on surface) asCutting
? Deselect “Tangential Extrapolation”
? Click Apply
? Click on the portion to remove
? Click ok to complete
Delete the three curves on surface
A- 65
To create an Extrude surface:-
? Click “Extrude” icon
? Select “3D Curve.12”
? Select “Normal to the curve” as direction
? Drag the double arrow on the preview surface to the left, up to ~15mm
? Click ok to complete
To create a Blend Surface:-
? Hide “3D Curve.12”
? Click “Freestyle Blend Surface” icon
? Select the two surface edges
? Disable “Project End points”
? Change the continuities as shown
? Drag the point closer to the point
? Click “Front View” icon
? Adjust the tension values to match the image
? Click ok to complete
Hide the Extrude surface,To make a Blend curve:-
? Click “Freestyle Blend Curve” icon
? Select the two surface edges
? Change the continuities as shown
? Adjust the tensions to match the image (Right View)
? Click ok to complete
http://www.cadfamily.com/html/Article/CATIA%20Freeform%20Surfaces–Part%20C_508_1.htm
http://www.cadfamily.com/html/Article/CATIA%20Freeform%20Surfaces–Part%20C_508_2.htm
http://www.cadfamily.com/html/Article/CATIA%20Freeform%20Surfaces–Part%20C_508_3.htm
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