Pro/rNGINEER Wildfire Tips & Tutorial (Pro/E Wildfire 4.0, Wildfire 3.0, Wildfire 2.0 and 2001)

TUTORIAL: Spring Model Relation for Pro/E Make Flexible

TUTORIAL: Relation in Spring Model for ‘Make Flexible’ in Pro/ENGINEER

Version: Pro/E Wildfire, Wildfire2.0, Wildfire3.0, Wildfire4.0

My spring model is not behaved as expected when I use the make flexible function in Pro/ENGINEER. Instead of compressing the spring, my spring reduce the number of coils after applying make flexible function. What should I do?

proe spring model

proe spring model make flexible

When you create the helical sweep feature, the pitch dimension is input. So, the pitch size is input as a constant. This is why the number of coils reduced after you compress (shorten) the spring. To overcome, we need to write a relation to set a constant number of coils and let the spring behaves logically.

1. With the spring model opened, click Tools > Relation

proe relation

2. The relations dialog box appears. Next, move your mouse cursor to the spring model display and select the spring. This will make the related dimensions appear on the screen.

proe ralation

3. After that, from the pops-up menu manager, specify the spring dimension which you want it to be displayed. For this tutorial, pick Profile and Done.

proe spring model specify

4. The spring dimension’s parameters will now appear. Notice that we can clearly see that the pitch’s dimension is d5 and the spring length is d4. (These parameters may differ in your model, so identify the parameters carefully to write a valid relation)

Pro/E spring model make flexible

5. In the Relation dialog box, write an equation to set a constant number of coils.

PITCH = SPRING LENGTH / NUMBER OF COILS

Equation for this tutorial:
d5 = d4 / 10
(I fix the number of coils to 10 rev)

proe relation

The spring should now working properly when you compress or extent it in assembly.

 

More TipsTUTORIAL: Make Flexible of spring in Pro/E Assembly (coming soon)

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