Using Toroidal Bend to create Automobile Tire in Pro/Engineer Wildfire

The ToroidalBend option bends solids, nonsolid surfaces, or datum curves into toroidal (revolved) shapes. (ref: PTC Help).

In this tutor we will create simple automobile tire, feel free your design but for the 1st time follow this design for understanding how to use this feature in Pro/Engineer Wildfire.

1. Create base Feature like this picture and dimension using extrude feature. Create sketch at Front Datum Plane as Sketcher plane and sketch like below picture. After finish sketch, Extrude that sketch 10000mm.

2. Adding grip at tire using extrude feature and use below sketch at top face of base. Enter extrude value 20.

3. Pattern grip feature 9 grip. Click at dimension with value 50, change become 105 and fill in n value with 9. Finish it with click at green checklist.

4. Create Round feature at 4 corner at grip with radius 12. 

5. Create pattern for last round for grip using this method: at model tree, right click round feature and choose pattern. 

6. Create second round at grip feature at lower and upper edge with Radius 3.

7. Create pattern same using step 5 for 9 grip.

8. Create mirror for all body: click Edit -> Feature Operation -> Copy -> Mirror -> All Feat -> Dependent -> Done. Select Right Datum Plane as Mirror Plane -> Done. 

mirroring base

9. Revolve this body using Toroidal bend and control by tire profile sketch by Click Insert -> Advanced -> Toroidal Bend. Options Popup will appear. Choose 360 -> One Side -> CrvBendContract-> Done -> Select All Solid -> Done. Choose magenta face as Sketch Plane and top surface as Top Plane for sketching curve. 

After finish sketch Click finish button and select parallel face as start and end of revolution toroidal. And finishing by clicking done.

before toroidal bend

after toroidal bend

That All, i hope this tutorial usefull for you

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