Patterned Curves

[JWayman]

Hello,
I want to model some cable runs in a 'What If' assembly model.
I have a number of parts A arranged on, say, a 1m pitch - let's say I start
with 10. I have a number of Parts B arranged on, say, a 2.9m pitch - let's
say I have 4 of these.
Parts A and B are assembled on the outer surface of a cylinder, with a
constant angle between the A's and the B's. The pitches mentioned above are
in the axial direction along the cylinder.
The cable runs go between part A and part B, around the outside of the
cylinder. The cables from the first 4 A parts all go to the first B part,
the next 4 A's to the second B and so on.

I have attached a very simple diagram.

<<cable runs.jpg=">>

The way I started was to make points on each A part, and some more a
distance away from each A part. I also made similar pairs of points on and
near each B part, so I ended up with four groups of points associated with
each B part, but only one of these groups associated with each A part. Four
datum curves through points, four variable section sweeps and there is the
first set of cables.

Now the hard part:
I want to pattern these sets of cables, so that I can change the number of A
parts and B parts, and their pitches along the cylinder and have them
regenerate without failing. Like I said, it's a What If model.
So, the problem seems to boil down to: How do I pattern a set of curves so
they attach to two sets of points, each set of points being on a different
pitch?

I tried reference pattern, but it only selects one reference.

Any ideas?

WF2, m220


Thanks,


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[bkurth]

John,

You can pattern a pattern. Have you tried that? You can even create a pattern, then add some features to that pattern, group the pattern and featurestogether and then pattern that group. That should give you the ability to make changes and not fail. You will need to decide which pattern drives which pattern, though. You do need to be careful with nested patterns, though, because if they are not done right, they can be hard to troubleshoot later on. Hope this helps.

Brian

In Reply to John Wayman:

Hello,
I want to model some cable runs in a 'What If' assembly model.
I have a number of parts A arranged on, say, a 1m pitch - let's say I start
with 10. I have a number of Parts B arranged on, say, a 2.9m pitch - let's
say I have 4 of these.
Parts A and B are assembled on the outer surface of a cylinder, with a
constant angle between the A's and the B's. The pitches mentioned above are
in the axial direction along the cylinder.
The cable runs go between part A and part B, around the outside of the
cylinder. The cables from the first 4 A parts all go to the first B part,
the next 4 A's to the second B and so on.

I have attached a very simple diagram.

<<cable runs.jpg=">>

The way I started was to make points on each A part, and some more a
distance away from each A part. I also made similar pairs of points on and
near each B part, so I ended up with four groups of points associated with
each B part, but only one of these groups associated with each A part. Four
datum curves through points, four variable section sweeps and there is the
first set of cables.

Now the hard part:
I want to pattern these sets of cables, so that I can change the number of A
parts and B parts, and their pitches along the cylinder and have them
regenerate without failing. Like I said, it's a What If model.
So, the problem seems to boil down to: How do I pattern a set of curves so
they attach to two sets of points, each set of points being on a different
pitch?

I tried reference pattern, but it only selects one reference.

Any ideas?

WF2, m220


Thanks,

John Wayman
Mechanical Designer

Tel: 01963 372519


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