more than one main part in assembly

[Anonymous]

Hello, me and my college have in different models the same problem:

Sometimes a assembly has more than 1 main part, mostly 1-2 more. In this way the quantity in the assembly drawing and the partlist is wrong, because

quantity of a assembly = quantity main parts.

What we did wrong? Normally it has to be 1 main part per assembly. We can found the mistake in the model browser (see attached file) also and fix the problem with "create main part of assembly" and repositioning, but it's not the right way. We need to know, how we create this fault.

Thanks a lot and have a nice day.

[Anonymous]

Hello, me and my college have in different models the same problem:

Sometimes a assembly has more than 1 main part, mostly 1-2 more. In this way the quantity in the assembly drawing and the partlist is wrong, because

quantity of a assembly = quantity main parts.

What we did wrong? Normally it has to be 1 main part per assembly. We can found the mistake in the model browser (see attached file) also and fix the problem with "create main part of assembly" and repositioning, but it's not the right way. We need to know, how we create this fault.

Thanks a lot and have a nice day.

[AleckGiles]

Hi,

I suspect the problem is arising because you are adding welds or shop bolts after numbering the model. Thus you are combining multiple standalone parts or assemblies into one assembly. Whenever you edit the model after having numbered you must renumber the entire model before producing or updating any documentation. Otherwise you always run the risk of getting gibberish.

Many people are nervous of renumbering but in my experience AS has never changed the number of a part without a good reason (such as used to have 8 the same now one has an extra hole so the one gets a new number). If the items haven't changed the numbers won't change. In your case, combining assemblies will result in significant changes to the numbers. Each assembly will choose a single main part and keep one of the numbers ditching the other one.

Naturally changes are bound to happen but it is best to leave the initial numbering as late as possible - immediately before creating documentation. The basic structure of the model - assemblies and standalone parts - is not likely to change significantly after that. Thus you avoid too many drastic changes.

[AleckGiles]

Hi,

I suspect the problem is arising because you are adding welds or shop bolts after numbering the model. Thus you are combining multiple standalone parts or assemblies into one assembly. Whenever you edit the model after having numbered you must renumber the entire model before producing or updating any documentation. Otherwise you always run the risk of getting gibberish.

Many people are nervous of renumbering but in my experience AS has never changed the number of a part without a good reason (such as used to have 8 the same now one has an extra hole so the one gets a new number). If the items haven't changed the numbers won't change. In your case, combining assemblies will result in significant changes to the numbers. Each assembly will choose a single main part and keep one of the numbers ditching the other one.

Naturally changes are bound to happen but it is best to leave the initial numbering as late as possible - immediately before creating documentation. The basic structure of the model - assemblies and standalone parts - is not likely to change significantly after that. Thus you avoid too many drastic changes.

[Anonymous]

Hi,

Thank you, I reconstructed your answer, but it made no problems. In my case is not a solution for my problem.

[Anonymous]

Hi,

Thank you, I reconstructed your answer, but it made no problems. In my case is not a solution for my problem.

[cobey.aynsley]

Still no solution to this?

[cobey.aynsley]

Still no solution to this?

[AleckGiles]

Hi,

I don't know what happened for j0h but renumbering will sort out any issues with more than one main part in a single assembly. Simply ensure you have nothing selected and then do the numbering again.

If you are still in doubt you can remove all the existing numbering and start again but then I can't guarantee that a certain part will get the same number back again.  Perhaps just remove the numbering from the suspect assembly(s).

To remove numbering go to the Output > Part MArks ribbon panel. For assemblies make sure the "Toggle Switch display SP/MP" icon is all white. Select the suspect assembly if desired. Then click "Ungroup identical parts" and Yes. This will remove the current assembly numbers and break any links between parts that are the same.

Then make sure you have nothing selected and do the numbering for the whole model. The parts that had the number deleted will be compared to the rest of the model and each other and get new numbers accordingly - and the main part will be sorted out.

[AleckGiles]

Hi,

I don't know what happened for j0h but renumbering will sort out any issues with more than one main part in a single assembly. Simply ensure you have nothing selected and then do the numbering again.

If you are still in doubt you can remove all the existing numbering and start again but then I can't guarantee that a certain part will get the same number back again.  Perhaps just remove the numbering from the suspect assembly(s).

To remove numbering go to the Output > Part MArks ribbon panel. For assemblies make sure the "Toggle Switch display SP/MP" icon is all white. Select the suspect assembly if desired. Then click "Ungroup identical parts" and Yes. This will remove the current assembly numbers and break any links between parts that are the same.

Then make sure you have nothing selected and do the numbering for the whole model. The parts that had the number deleted will be compared to the rest of the model and each other and get new numbers accordingly - and the main part will be sorted out.