Autodesk AutoCAD

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The data import from CFturbo is realized by a LISP-script.

 

Loading the LISP-Application and Import of the Geometrie

 

Extra | Anwendung laden (command: _appload)
select file xyz2spline.lsp from CFturbo-installation directory, load and close dialog

 

execute loaded LISP-application by command xyz2spline
select and open *.txt-file expoted from CFturbo
Attention: If "; Fehler: Fehlerhafter Argumenttyp: FILE nil" occurs as error message it can be bypassed by typing the filename in the open-file-dialog manually instead of selecting the file by mouseclick.

 

 

Construction of Impeller

 

export_autocad1

Sample-view after data import

 

Creating the blades

 

starting with version 2009 the creation of blades in AutoCAD is possible any longer, because the features for lofting surfaces has been modified by Autodesk
earlier version support the command _loft to create surfaces from non-planar curves

 

 

Creating rotational surfaces (Hub, Shroud)

 

command _revolve
select hub and shroud curves
Achse definieren durch [Objekt/X/Y/Z] <Objekt>: 0,0,0
Endpunkt der Achse angeben: 0,0,1
Rotationswinkel oder [STartwinkel] angeben <360>: 360

 

 

Construction of Volute

 

export_autocad2

Sample-view after data import

 

Creating the open part of volute geometrie

1.command _loft
2.select profile-curves to loft (part by part, starting with the open one)
3.Option eingeben [Führungen/Pfad/nur Querschnitte] <nur Querschnitte>: nur Querschnitte
4.export_autocad3Settings for lofted surface
5.repeat steps 1 to 4 for remaining parts of the volute

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