Solid Modeling with Mesh Data

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QuickStart3 guides you through the Redesign of an intermediate level CAD model using 3D scan data of a mechanical prototype:

This model includes segmenting the mesh into regions, creating mesh-fit surfaces, administering solid-surface cuts and generating extrusions, revolutions and fillets.  All features are based on the imported 3D mesh.

 

 

Modeling Process

 

1. Click Insert > Import and open CastingPart.stl at following location: ~/INUS Technology/rapidformXO Redesign/Sample/QuickStartGuide. The model looks as shown below.



2. Click  (Region Group) button on the toolbar. Select Tools > Region Tools > Auto Segment or click   on the toolbar. Auto segment the scan data with default options. You can get auto region like the below image.

To edit region, select Paint Brush on the toolbar.

 

Now select the following region and click  to split the region.

   

 

Select the following region and click  to split the region

    

Click  button at the right bottom of the Model View to exit region mode.

 

3. Click (Mesh Sketch) on the toolbar to go to the mesh sketch mode. Select Front reference plane as base plane.

Change Offset Distance From Base Plane to 5mm.

 

Click OK. You get section segment of mesh data.

 

Create a rectangle on the segment.

 

To exit, click  button at the right bottom of the Model View.

 

4. Now extrude the sketch. Click  to extrude the sketch. Select the Method as Up To Region and Sub Method as Trim With Region Fit Surface. Select the freeform region.
Note: You can click  in the selection filter to be able to select the regions.

 

Change Resolution to By No. Of Control Points and set No. Of U/V Control Points to 10 in the Extrude dialog box.

 

Click OK. Click Ctrl + 1 button on the keyboard. The extrusion result will be like below image.



5. To see mesh data, click Ctrl + 1 button again on the keyboard. To create rib from mesh data, Create ref. plane by picking the region as follows. Select the Method as Extract and Fitting Type is Fitted.

  

 

 

Click OK. The created Plane1 looks as shown below.


6. Click (Mesh Sketch) and select the above ref. plane, use mesh sketch to get the profile of the rib.

 

Create the sketch from the above segment and exit sketch mode.



7. Click  to extrude the sketch. Change Method to Blind and Distance to 25 mm.


The result of solid body will be as the below image.

 

8. Change selection filter to Regions.

Now create the axes for revolving shapes. Click Insert > Ref. Geometry > Vector or click  on the tool bar. Select the Method as Revolving axis and select the region as shown below. Click OK and you can see the created Vector1.

    

 

Similarly create the ref. vector for the other cylindrical part.

    

9. Change Select Mode to Line.

 

Change Selection Filter to Poly-Vertices and Ref.Geometries.

 

Now create the planes (Insert> Ref.Geometry> Plane). Select the Method as Pick Point& Coplanar axis . Select the vector created above Vector1 and pick a point on the revolving feature.

 

 

10. Click (Mesh Sketch) on the toolbar to go to the mesh sketch mode. Select Plane2 as base plane.

 

Create the sketch as shown below.



11. Click Insert > Solid > Revolve or  on the toolbar. Select Sketch3 as Base Sketch and Vector1 as Axis. Change Method to Both Directions. Adjust angles as the below image.

Click OK. The result will be like below.

 

12. Similarly create the sketch for the other cylindrical part.

 

13. Click Insert > Solid > Revolve or  on the toolbar. Select Sketch4 as Base Sketch and Vector2 as Axis. Change Method to Both Directions. Adjust angles as the below image.

Click OK. The result will be like below.

 

14. To create the boss shaped feature, create the plane as shown below. Click Insert > Ref. Geometry > Plane.  Select the region as shown below.

   

15. Click (Mesh Sketch) on the toolbar to go to the mesh sketch mode. Select Plane4 as base plane.

 

Create a circle on the sketch.

 

16. Extrude created circle. Change Method to Blind, Length to 60 mm and Draft Angle to 5 degree.

 

The result will be like the below.

 

17. Click  (filet) to apply fillet to the body edges. You can automatically extract the radius values from mesh data by clicking  in the dialog tree.

Fillet other edges like the below.

 

 

18. The final image looks as shown below.

 

19. To check the deviation between mesh data and solid, click Deviation in the Accuracy Analyzer(TM) bar.

 

 

 

 

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