Community Tip - Did you know you can set a signature that will be added to all your posts? Set it here! X
Creo 2, M120
I have a VSS where I need the value of one radius to vary along the sweep from a large vaue (X) at the start to a much smaller one (Y) at half way back to (X) at the end. Can I do this with a relation and trajpar? If needed, I could split it into 2 sweeps where one went from X to Y and the next from Y to X.
Thanks,
You can do this evalgraph(c,n) as well... more intuitive.
A sine or cosine function will do this. Cosine starts at "1" sweeps to -1 and back to 1. Of course, a wave form.
To use a cosine, you need a location from 0-(multiples) of 360 degrees. In other words, at 0 degrees, the value is 1; at 90 degrees, the value is 0; at 180 degrees, the value is -1; and at 360 degrees, it is again 1.
The full length of the trajectory in this case is "360" rather "1".
What is confusing in your statement is that the R is different in X and Y. This sounds more like an ellipse
Some interesting reading...
The X and Y are the large & small values of the radius, not coordinates. 😄
Aha, in mathcad terms that wouold be A and B (lower case of course)
Did the references help or do you still need some guidance?
A quick napkin sketch would help.
I'm not sure. I got through my emergency without having to try it out. I'm on to other panics, I'll have to come back to that in a few days.
Anytime