KOMPAS-3D v23

The shape of the lofted elements can be changed by setting the guide curves.

Objects existing in the model – 3D curves, contours, sketches, edges can be used as guide curves. The number of guide curves is not limited.

The figure shows an example of a lofted element, built with and without the use of guide curves.

Lofted Element:

a) without guide curves,

b) using one guiding curve,

c) using several guiding curves

To select as guide curve, in the section Guide curves click in the box Curves. Select the desired objects in the Design Tree or in the graphics area. The names of the selected objects appear in the field Curves.

If you need to use a spline as the guiding curve, which is not present in the model, you can create it without interrupting the command execution. To do this, click the Spline by Vertices button to the right of the Curves field. Will start process of creating a spline by points. You can create a spline of this type or choose another type — spline by poles or metaspline. Perform the required actions to create the spline and complete the construction. The system will return to the initial operation, and the created spline will be automatically added to the list of guiding curves.

Guide curve requirements

1.The guide curve must be one continuous sequence of segments. If a sketch is specified as a guide curve, it should contain one contour.

2.The guide curve can be closed or open.

3.The guide curve must intersect all sections of the lofted element points belonging to the contours of these sections.

4.The guide curve must intersect the sections in the order in which they are joined when building the element (i.e. listed in Sections on the Parameter Panel).