### Helical Wave Shape Spring

Step A:

- Create a new part.
- Create a datum curve >> curve from equation
- Select Cylindrical Coordinates
Variable used- r, theta & z
- Click on equation >> add equation in note pad window –
r=5
theta=t*3600
z=(sin(3.5*theta-90))+24*t
- Verify the equation.

### Spherical Helix by Datum Curve

Step B

- Create a new part.
- Create a datum curve >> curve from equation
- Select Spherical Coordinates
Variable used- rho, theta & phi
- Click on equation >> add equation in note pad window –
rho=4
theta=t*180
phi=t*360*20
- Verify the equation

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