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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How to define material sheet size in Pro/Engineer and UG NX3?

How to define material size for sheet metal bending in Pro/Engineer and UG NX3?


This tutorial use for determine raw material sheet size for bending part.





In this tutorial I used simple part called stabilizer_cover.prt. This is simple part, so you can create this part quickly by yourself.
OK, lets to starting this tutorial in Pro/E wild fire

1. Open Sheet metal part (stabilizer_cover.prt)

2. Click Application at Menu Bar and then choose Sheet metal, pop up menu SMV Convert will appear (this converting part modeling to sheet metal modeling) choose driving srf and determine thickness value (in this tutorial use thickness 0.5 mm), and then press green check list.

3. Now, we on sheet metal environment application with new command for sheet metal. In menu manager click Feature -> Create ->Sheet metal -> Unbend-> Regular -> Done. Select surface as fixed surface, -> Unbend All -> Done. And now you can measure sheet size. Enjoy it…



Now, Let’s Try in Unigraphic NX3

1. Open Sheet metal part (stabilizer cover.prt) then choose click application in menu bar, choose sheet metal -> forming/flattening, Part in Process dialog box appear, Choose OK.





2. In new Environment windows click Tool in menu bar then choose flat Pattern and Flat Pattern Dialog box will appear.

Default selection this dialog box is Unform Sheet Metal Feature, so just pick top surface on your part and Bend Allowance Formula in Flat Pattern Dialog box will active.

3. Click Bend Allowance Formula and Bend Allowance Formula Dialog box appear, choose 1 formula (you can change constant number, as your material reference, i change constant to 0.3183 same with pro/E default setting). Click OK.

4. Click Apply to unform this part. And The Result like below picture.

An the result is 484.637mm x 200mm same with pro/E result.

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