If there's a picture, I can't see it.....
Oh strange. I attached the image now.
100 turns is the hard-coded limit. Perhaps, it's because of the horsepower required.
How about doing a linear pattern to get your OP length?
Since it's a integer multiple of the max (even if it wasn't, you could set the turns to be a integer divisor of the final length).
You can create a global variable and use the Measure option to get the distance. (Post back if you'd like assistance with this.)
The swept turn data aren't exposed in Manage Equations to do the math from those.
The downside is linear patterns don't merge.
Rereading your OP:
Because there's no rotation, you can only use linear pattern if the turns are complete.
To make as a part, you could also do multibodies and constrain them together. This would allow rotation and different turns.
All else fails, you can make an assembly (and optionally save it as a part, if you like, even though that might break associative things).
Thanks for the tips, I wasn't even thinking of a linear pattern.
After some messing around I managed to create the shape I wanted by:
1) 3D Sketch of path
2) 3D Sketch to spline
3) Sweeping a line along the spline to create a surface I can normal to when using the linear-pattern feature
It resulted in a nice overall shape but it's a real mess up close. I simplified the geometry of the original body being patterned but I don't think I can use it in this form. Perhaps I can divide my original body into quarters or less and try again to get a nicer result.
Another method to "extend" the number of turns is to create multiple surface sweeps (just a line profile, end-to-end, mated finish-to-start and at a slightly larger diameter).
Then extrude a cylindrical surface along the sweep axis, at the required diameter.
Create an Intersection Curve, selecting all of the sweeps and the cylinder.
Use the resultant 3DSketch as the helix for your final solid's sweep path.
This methodology is similar to the one used to create the wire wrapped around ferric cores.
Wow, interesting to know that there is a limit. I don't know of a similar one in Pro/E, I have never run into anything like that......
Nearly two years later, I've discovered the same problem trying to model some flexible metal conduit.
Can you post your model here?
John Gadole wrote:
....The problem is for say a 14' length of pipe