Saving a V5 Parabola as a V4 Parabola

This task shows you how to save a CATIA Version 5 Parabola as a CATIA Version 4 Parabola. A V4 Parabola is created if there is a parabola in the CATPart the customer wants to save as model.

The customers, who want to use V5 Parts (with Parabola) in the V4 are all concerned, and the customers who want to transfer their V4 models to the V5 and to transfer the created Part back to the V4 are also interested.

To be correctly transferred and to keep the canonicity of the parabola, these conditions (represented in the screen shot below) must be checked:

  • The distance between the center and the focus must be lower than the V4 infinite and higher than half the V4 point tolerance

  • Each point of the parabola must be in V4 validity domain.

  • The surface under the V5 parabola must be a plane

  • The parabola must have distinct beginning and ending points. A parabola degenerated in one point will not be translated with its canonicity.

If one of these conditions is not checked, the transfer will be done, but canonicity will be lost. It means that one parabola would be transferred as a generic curve.