Helical fill pattern of small holes changes with parent material diameter
Helical fill pattern of small holes changes with parent material diameter
(OP)
I am using the fill pattern function to create a sprial fill of a constrained circle on a simple circular plate. The holes are very tiny, .026 and the are spaced .129 hole to hole and .129 radially. The parent material is just a circular plate with a diameter of 14.4". When i change the diameter of the part to 16.2" the spiral pattern seems to rotate and change the pattern completely. I have made the original hole and pattern completely independent of the geometry of the part and yet the pattern still changes with diameter change.
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If anyone wants to see it for themselves, just go into this part and change the spacing to .129 between holes and .129 radially. I don't recommend regenerating the part as it will take forever, but the black dots will show the issue. If you cancel out and then change the diameter, go back into the pattern, you will see what my pictures show.
It seems that the helix slightly rotates when the part geometry changes, but i have no idea why.
Link
Link
Link
If anyone wants to see it for themselves, just go into this part and change the spacing to .129 between holes and .129 radially. I don't recommend regenerating the part as it will take forever, but the black dots will show the issue. If you cancel out and then change the diameter, go back into the pattern, you will see what my pictures show.
It seems that the helix slightly rotates when the part geometry changes, but i have no idea why.





RE: Helical fill pattern of small holes changes with parent material diameter
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: Helical fill pattern of small holes changes with parent material diameter
RE: Helical fill pattern of small holes changes with parent material diameter
A couple of holes on the edge out of what must be hundreds or thousands of holes is not going to make any significant difference to your flow. The tolerance on the hole size and position will swamp any effect of one or two holes.
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The Help for this program was created in Windows Help format, which depends on a feature that isn't included in this version of Windows.
RE: Helical fill pattern of small holes changes with parent material diameter
Agreed, perhaps the fill pattern is not the best way to model this, but I haven't looked into the method you're talking about. I understand that you can say: "don't use fill" but it isn't a random generation of holes, should it be reproduceable?