helix (3d curve) for a VSS

[al204]

hello folks,

I need to create a 3d helix curve....how can I do that?

I need to use it as the main curve for a VSS feature.

Later on I plan to use it to create a trajectory milling sequence, that is why I can´t use a helical sweep.

Is there a special function to create this type of features? 3d curves?? Is it using an equaction?

thanks, regards

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[ptc-810450]

Create a datum curve by equation. Choose the cylindrical coordinate system
option and pick your coordinate system. In the window that pops up you can
type something like:

r = 5
theta = 360 * t * 16
z = 1 + 23 * t


This will give you a helical curve with radius of 5, 16 full turns and the
curve starting and stopping at z = 1 and 24 respectively.

r, theta and z are required parameters though you can add your own to do
calculations provided you have these three.

t varies from 0 at the start to 1 at the end. The curve is generated
continuously in between.
--
Mark von Huben




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