simple assembly constraints, real head scratcher

[nominus38]

Okay, I've got a cone part with a bolt hole pattern in it, and bolts sticking out through those holes. Then there is a door that is contoured to fit that cone with a matching hole locations. Now, I start bringing in washers, and place a relationship to the bolt axis, then a tangent relationship with the flat face of the washer to the outside of that contoured door panel. Everything goes smoothly for the first 6 washers, until when I place the 7th, for some reason they aren't fully constrained. Then it starts getting really weird when I start unlocking and locking the rotations on them. See video below. Pay attention to the shaky corners in the pathfinder for the washers under #6.

This isn't really that big of a problem, I'm just a stickler for things being fully constrained, and I'm curious what is going on here with these.

[hawcad]

Hi @nominus38,



You mentioned that this is a hole pattern in the cone part.

So can You "pattern" the bolt and washer using this pattern?

[nominus38]

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@hawcad wrote:

Hi @nominus38,



You mentioned that this is a hole pattern in the cone part.

So can You "pattern" the bolt and washer using this pattern?

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There is no actual pattern, it is a bolt circle but not a pattern that can be used as the bolt pattern was done while the part was unbent. After rebending the hole pattern is no longer useful in that regard.

[nominus38]

Here, so you can see how I did this. I'm actually pretty proud of what I did with the door. And the bolt pattern.

The top level assembly is named hoppercone-00.asm

[beachcomber]

As the door is a cylindrical surface there are 2 possible solutions to the tangent relationship - could this be part of the problem, although if some are OK it seems a bit weird.

[Fiorini]

I would use the "Duplicate Components" tool  to pattern the Washer and the Nut over the Bolts.

[Imics]

Hi,

I suggest using part pattern from "part level". You can save a lot of effort and time.

Here is a video about steps:

BR,

[nominus38]

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@Imics wrote:

Hi,

I suggest using part pattern from "part level". You can save a lot of effort and time.

Here is a video about steps:

BR,

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Dude, I never would have thought of doing the pattern like that, using the central cutout by offsetting out to where the bolt circle is and then pattern by curve.....brilliant. I think you will save me lots of time on things like this in the future.

[Imics]

Hi,

"I think you will save me lots of time on things like this in the future."

This was my goal!

BR,