# Tutorial: How to model a Suspension Spring in SolidWorks and show design intent

For Any doubt ask me i will be happy to answer it.

1. ### Step 1:

In a new part draw a circle with radius equal to that of the spring.

2. ### Step 2:

Under Curves select Helix and spiral.

3. ### Step 3:

Select Variable pitch. And select pitch and revolution under define by. You will get a table. Enter following values.

4. ### Step 4:

The meaning of these values is that at the beginning the pitch is 3 mm, which increases gradually with revolution to a pitch of 10 mm at the 5th revolution. For the next 5 revolution the pitch remains same. For the next 5 revolution the pitch gradually decreases to 3 mm. similar logic can be applied to the other define by types. You can define helix with different values for different purposes.

5. ### Step 5:

After clicking on green tick you will get the following variable pitch helix.

6. ### Step 6:

To create a spring on the suitable plane right or top (if angle of helix is 0, 90, 180 or 270 degree),draw the circle with radius equal to that of the spring cross-section.

7. ### Step 7:

Sweep it along the helix.

8. ### Step 8:

Your coil for suspension is ready. Render it. you can also insert dampers. to make it a complete suspension system