Change an .iam file to a .ipt
Accepted solution
If you want to create an IPT from an Inventor assembly file, just create a new part file and use the "Derive" command to derive an assembly into it. Be sure to keep your assembly, you will probably not like the derive results.
John Hackney, Retired
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Couple different methods to do this.
First, export out your assembly as a step file. Then inport it in as a part. It will come in as a dumb solid though.
Second, derived part.
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Based on some of your other posts I'm going to say that lack of proper training/program knowledge is hurting you here so its VERY important that you clearly communicate details to us so that we can direct you down the proper path..
I really doubt that you would want to convert an iam to an ipt file.. There are ways as shown above but I really don't think thats what you should be doing..
I'm going to keep assuming you are working on this cylinder head and have completed the piston..
The piston head should be one part (ipt file), each ring should be an ipt file, wrist pin is one ipt file, rod is one ipt file, rod end is one ipt file, rod bolts are one ipt file, rod bushing top is one ipt file, rod bushing bottom is on ipt file.
All of them should be assembled/constrained in an iam file to make a piston rod assembly and so on..
Inventor should follow the real world... In the real world those are all individual parts and in Inventor they should be the same.. A cylinder head is an assembly of parts and should be in Inventor too..
Attempting to run before you learn to walk in Inventor while it may be gratifying to start its only going to lead to failure/disappointment..
Its a professional program and requires a professional level of learning.. Don't try to run before you learn to walk or expect to bruise your face 
Its the weekend though (20 minutes till Beer:thirty here) so I'm outta here... and will be back Monday..
If you are asking "How to create a Inventor Part from an Inventor Assembly" then the screencast will show you this process. There is a lot of discussion about using this process to "Hold an assembly together". The process I am showing is NOT the best method to create a functional assembly that can be then included as a sub-assembly in another assembly. A derived part is just that, a solid part. It cannot be driven or cannot move is any fashion. You say you are making a piston, pistons move and flex in an engine. A derived part cannot be used in this way.
Derived assemblies are often used to send a "representation" of an assembly to a customer for approval. It is a way of preserving intellectual rights to the design. In fact, one of the assembly "Level of Detail" processes uses the derive process in making substitute parts.
John Hackney, Retired
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Hi! The trouble you are having seems to be related to constraining components. It depends on what you want to do actually. If you want to have a fully functional assembly simulating the motion, you will definitely need an assembly. However, if you only care about geometry creation, it does not really matter where you create the geometry. You could create each part as an ipt file and assemble them together. Or, you can create each part as a solid body in an ipt file. Then push each solid body as a part into an assembly.
Anyway, it sounds like the issue is with how the components are constrained, not how to create the geometry. Please share what you have so far and forum experts can comment further.
Many thanks!
Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
An assembly file *.iam is only a list of links to the part files *.ipt and instructions on how to put them together.
Without the *.ipt files, the assembly file is useless.
Attach all part files here.
