Pro/ENGINEER (PTC)

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Construction of impeller

 

The following files are exported by CFturbo for impellers:

•*-hub.pts, *-shroud.pts: points of hub and shroud
•*-profile.ibl: points for blade profiles
•*.ibl: all points for hub, shroud and blades

 

 

Creating hub and shroud

 

export_proe1

•insert sketch: Insert | Model Datum | Sketch
•Sketch plane: „RIGHT“
•Reference: „FRONT“
•Orientation: „Oberseite“

 

•create reference coodinate system: Sketch | coordinate system
•create spline by 2 points: Sketch | Spline
•double-click on created spline
•select <File>, select reference coordinate system, confirm selection

 

export_proe2

•select *.pts-file
•confirm pointcount
•close spline menu
•There must be only one spline per sketch!

 

•create centerline for rotation: Sketch | Line | Centerline
•Position axis on center point with orientation of y axis (equivalent to z axis in 3D)

 

•return to 3D-view

 

•select sketch and open menu for rotation: Insert | Rotate

 

export_proe3

•confirm created rotational surface

 

 

Creating blade profiles

 

The profile curves for a blade are loaded from *-profile.ibl files. A surface is created from the curves and displayed as a circular pattern.

 

•creating axis of rotation: Insert | Model Datum | Axis
•press <Strg> while selection „Right“ and „Top“

 

export_proe4

•confirm

 

•loading curves from file: Insert | Model Datum | Curve
•select „From File“, confirm by „Done“
•select coordinate system
•select *-profile.ibl file

 

export_proe5

 

 

•connect curves to surface: Insert | Boundary Blend
•select profile curves

 

export_proe6

•confirm blade surface

 

•creating a circular pattern: select blade surface from model tree
•in the context menu select „Pattern“

 

export_proe7

•Type: Axis
•select sketched z axis

 

export_proe8

•number of blades
•angle: 360°

 

export_proe9

•confirm

 

 

Construction of volute

 

The construction of a volute uses the same steps like an impeller. By repeating of

•loading curves from files

 

export_proe10

 

and

•connecting curves to surfaces

 

export_proe11

 

a 3D-geometry of the volute can be created.

 

 

export_proe12

 

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