Convert DXF to CAD

dxf to cad conversion is pretty much related to attempts conversion CAD design data and other technical schematics. Considering DXF is one of the common standards, it should be widely supported in various CAD / 3D modeling tools.

You will just have to use the one that produces .cad files, which unfortunately means one of several possible choices which may not all share the same cad file type, but rather a completely different one.