spiral curve

[smanigandan]

Can anyone please help me to create the spiral curves in w.f 2.0?


Thanks

 

[puppet]

what do u need it for?

u could just use a helical sweep. but do a search for equations which can drive ur geometry in this forum.

 

[jeff4136]

Datum curve from equation, cylindrical coordinates

r = IR + t * (OR - IR)
theta = t * 360 * #T
z = 0

Where:
IR = Inner Radius
OR = Outer Radius
#T = Number of Rotations

 

[becer]

If you don't want to use equations ...


Create a helical sweep using a surface. Change selection to geometry. Select curve ... Edit>Copy ... Edit>Paste ... While holding CTRL select the rest of the curve (make sure curve type is set to exact) ... OK ... then hide the surface.


View attachment 665

 

[mmead0ws]

Helical Swept curve or spiral curve?


Here are the equations for a spiral curve in cartesian coordinates:


x=x_offset+(t*angle/360)*pitch*cos(t*ANGLE)+x_radius*cos(t*\
ANGLE)
y=y_offset+(t*angle/360)*pitch*sin(t*ANGLE)+y_radius*sin(t*\
ANGLE)
z=0


The image below shows the parameters (all preceded by "LAY_"), their limits, and how they apply to the model.


View attachment 669


Good luck,


Matt