so easy..

but i thought more complex.. something like this:
script:var pf="/Users/user/Documents/CAD/";var d=".3dm";var a = ["achswerkzeug", "achshuellen", "reiter"];for ( var i = 0;i < a.length;++i ) { var pfad=pf+a[i]+d;moi.geometryDatabase.fileImport(pfad);};

Now (or before) something to delete the existing objects and than an other short key to export the objects to the part files......