AutoCAD Inventor :: Adaptivity In Weldment Machining
Jun 28, 2013
I started my project, the design is basically a bulkhead chassis design with multiple access panels on all 3 sides. I wanted all of the hole patterns on this assembly to be based on one sketch. So I created a base part inside the assembly, this part compiled of sketches and the sketches compiled of construct lines and points (for panel and chassis fastener hole patterns). This was going great, after learning a couple tricks.
Manufactuing had determined that I need to machine the holes on the chassis after welding. Which means I need to move the adaptive features, from the part files, to the assembly file.
So here is my problem, assembly sketchs are not adaptable? Either projecting to (from that base part file), or projecting from (from the assembly sketch to the part file). I tried both. How I should model this? How do I make weldment machining adaptive?
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Nov 11, 2013
How to place an ucs on a part, with identical orientation as the containing assembly. I have placed a grounded workpoint in the part, on the assembly origin, but When it asks for a point to give the direction of X and Y, I am unable to select anything as I am in part edit. the only things I seem to be able to select are vectors on the solid. But those cannot be used, since the angles are different from the assembly's.
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Mar 18, 2003
I have created a standard part that has imates and all features are adaptive. When I create an assembly and then try to place the component I would like for the part to come in adaptive automatically.
For example I have a nightstand I am modeling. The top and endpanels are in the assembly constrained to each other. I have a standard top back rail that is set up in a library and is used in all cases. The rail width and thickness is always the same but the length is different. I have two imates set up on the rail so when it is brought in, it will snap into place with one end of the rail mated to one endpanel and the other end mated to the opposite endpanel. But since the part is not adaptive on input it dosen't work right. One mate works fine but the other doesn't snap into place. Once I make the rail adaptive then it works fine but I have to insert it into the drawing first then make it adaptive then move the imates into place. Is there a way to make it adaptive automatically when it is initially placed in the assembly.
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Jul 1, 2013
I'm having trouble with a tangent constraint. I have an adaptive part in an assembly and it is a revolution. I am able to constrain the top and bottom of the part so that it expands and contracts with my assembly. But, when I go to constrain the sides of my part via the tangent constraint I get an "inconsistent constraint" error.
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Oct 9, 2013
I have a weldment file containg a 12" i beam with a small plate welded to the top of the beam. I have to machine that plate down to its finished thickness and punch a hole thru others. I use the machining button and remove my material with no issues. The problem comes when I launch the part the machining is not reflected at the part level. Do I need do have 2 versions (2 files) of the part machined/unmachined? I am sure this is a common practice within Inventor. See attached .jpg for clarity.
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Apr 4, 2012
I'm having problems using the "Project Geometry" command when I'm editing a sketch on a part, and attempting to project geometry from an assembly on the part.
Now in this example, this is the structure of my parts:
Assembly 1
-Fabricated Part 1
-Assembly 2
--Fabricated Part 2
--Fabricated Part 3
(Assembly 1 and Assembly 2 do contain more parts than what is listed, I just simplified it so I don't have to type out the hundreds of parts used)
Now, I want to project Fabricated Part 1 onto Fabricated Part 2. I use the following steps to do this, starting out by working in Assembly 1:
Double click on Assembly 2Double Click on Fabricated Part 2Create sketch on Fabricated Part 2Use Project Geometry command to Project Fabricated Part 1 onto sketch of Fabricated Part 2
This is where the trouble starts. When I try to project Fabricated Part 1 onto Fabricated Part 2, it gives me an error message of:
"Cross-Part projection failed because the sketch is in a part which is adaptive in another assembly"
Fortunately this is about as intuitive of an error message as you can get, simply Fabricated Part 2 is already adaptive in another assembly, and when you use "Project Geometry" it automatically makes the part adaptive to the assembly you are projecting from, and you can't have two assemblies driving one part, so it gives me an error message.
Only problem is, this is a part I just made, that isn't used in any other designs, and isn't adaptive in Assembly 2. Nowhere does it say which assembly the part is already adaptive in (I know it must have that info stored somewhere, as it needs to know what is adaptive where, I just don't know how to get to it).
Now that Projecting Fabricated Part 1 in Assembly 1 to Fabricated Part 2 in Assembly 2 doesn't work, I tried to Project Fabricated Part 3 in Assembly 2 to Fabricated Part 2 in Assembly 2, which strangely does work.
Basically whenever I project geometry found in Assembly 1 onto Fabricated Part 2 it fails with the above error message. Whenever i project geometry found in Assembly 2 onto Fabricated Part 2, it works. Neither Fabricated Part 2, or Assembly 2 are adaptive.
Now I'm wondering if this is a workflow problem. This is how these parts were made:
Assembly 2 is similar to another assembly found elsewhere called Assembly 3, the only difference is that in Assembly 3, I need to change Fabricated Part 4 to a different part, all other parts remain the same.
Therefor I open Assembly 3, do a "Save as/Save Copy As" and save it as Assembly 2. Now I need to make my changes to Fabricated Part 4, so I open it, do a "Save as/save copy as" on it, and save it as Fabricated Part 2. In Assembly 2 I then do a Replace on Fabricated Part 4 and replace it with my new Fabricated Part 2. I now make the changes I need to make to Fabricated Part 2.
I started at this company a couple months ago, and that was the workflow explained to me, and it seemed to work. I wasn't aware of any damage it could cause, as I haven't used Inventor before, so I went along with it. Since that time I'm working to implement Vault, and my knowledge of Inventor has increased, and I've become aware of a program thats called Design Assistant. I'm thinking doing the "Save as/Save copy as" function is keeping some legacy information of my old part, making it think it is adaptive in another assembly, when really it isn't, it is the part that I did the save as from.
So two questions: is using Save as/Save copy as a valid way to quickly copy designs, or should all copying of designs be done with Design Assistant?
Also, Is there any way to view where this part thinks it is adaptive in? The trouble I see, is using Save As has been done for a very long time here, so the part I did the Save As from, could have been Saved As from another, then Saved As from another, etc. etc., and it would be almost impossible to track down (if that is what caused the problem).
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May 24, 2013
Can an adaptive part (non involved in the drive constraint animation) bother the contact solver?
I have an assembly, with only one adaptive part, i have activate contact set for other 3 parts (not the adaptive part), activated contact solver and drive the constraints, but in the animation contact solver doesn't work at all.
So, i have tried to move manually the assembly (suppressing angular drive constraint) and the contact solver works fine.If i suppress the adaptive part the driving constraint and contact solver work perfect.
So i wonder... adaptive part can annoying the contact solver functionality?
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Aug 19, 2009
What would be best work flow for showing a part and having drawing for the different stages of machining, I would like to have a print with different sheets at say a lathe stage, than a broached part stage, then a milled stage. Should I do a part for each stage, just save to a different name or Start with a part from the first op, than derive it to another part, and make that part complete on second op, than derive it and make a third part, and so on.
Would like to do this, because we make special shaped part from round stock, so need print's to tell floor people rough blank form. Than mills machine it into final form from that lathe blank.
Similar to casted and machined drawing
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Sep 30, 2011
If certain modelling / sketch features should be avoided under the machining feature group.
I have an assembly file containing three part files, plus a weldment feature and machining features. In the real world this sub-assembly represents two metal components welded together, of which the third (plastic) component is then inserted, and this is followed by the final machining process - adding the staggered slot (see jpeg 1).
My problem is I get an error message as soon as I try to activate editing the weldment feature group (see jpeg 2). Clicking ‘Accept’ I can then edit the current weld, but I can not add any new welds. Inventor will let me choose to place a new fillet or groove weld, and even show a preview (see jpeg 3). But on clicking ‘Ok’ or ‘Apply’ I get another error message from which it won’t let me proceed (see jpeg 4 (in my second post)).
The error messages relate to the constraints placed on the work planes used to achieve the model features (extrusions, revolutions, chamfers, etc) under the machining features group.
A couple of points; the weld(s) have to proceed the machining features so each manufacturing stage can be clearly illustrated on the drawing of the sub-assembly. And yes in this case I could remodel the assembly, but it is time consuming and regularly our customers will want the design tweaked, so having to remodel every time would be unacceptable. Thirdly, I believe the work planes are needed to constrain the sketches (see jpeg 5 (in my second post) - the work plane is constrained to the ‘red highlighted dot’ and tangent to the cylindrical face).
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Mar 15, 2012
I want to put a cable tray going from a sliding door to a fixed piece of steelwork. When the door opens and closes, I want the cable tray to adjust to suit the sliding door. I'll upload the file that I have made. When i drag the sketch it all moves accordingly, but when I placed in the assembly and make it adaptive it does nothing, it will not constrain and it will only bring up the errors.
Inventor 2012
Windows 7 64-Bit SP1
Intel(R) Xeon(R) CPU X5570 @ 2.93GHz
NVIDIA Quadro FX 3800 (Avail. Graphics Memory 4067MB - Ded. 1024 MB)
12 GB RAM
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Apr 19, 2013
Inventor 2013..I am trying to show a part in a drawing of three different configurations of a casting:
1) Rough as received from the foundry
2) Partially machined or rough machined
3) Final machined
What is the most basic bullet-proof way to show this? Three different models?What is the procedure to change the representation to show changes in the model?Why does suppressing a machining feature in one representation change all representations?The rough part is brought into an assembly and the machining or removal of material happens in the assembly.
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Dec 11, 2013
Is there any way to create a single line stick type font in inventor. Everything comes in as a box type which is not ideal for selecting geomety once imported into cam software for machining/engraving. The model text will be extruded/embossed, but it it possible to get single line text in a dwg or idw that will import into cam software. It would be nice to be able to import the text from a inventor dwg,idw to a different level in mastercam to save time from having to redraw all the text in the cam software.
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Nov 17, 2013
how can i make a thread feature in machining environment after welding operation?
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May 31, 2013
I have a medium sized assembly that I was working with. I decided I needed to create a weldment, so I stripped the assembly of all subassemblies, individual parts, etc and saved it as a different name. However, Inventor will not allow me to convert it to a weldment. That optoin is greyed out.
The only thing I can think of is I have a base part that I have hidden. It is used to drive the assembly. Perhaps that is causing a problem, but I cannot remove it or all associativity will be lost. I deleted it temporarily to try, but did not save it. The convert to weldment option did not appear after I deleted it.
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Sep 19, 2013
I'm trying to model plug welds in IV2014. I've read all the posts here that say that I need to split the hole faces. Problem is, the split face command doesn't seem to appear in weldments. I want to make the holes to be plugged as a weld preparation. Am I just missing something here, or is IV so backward that a common weld can only be achieved when not working with a weldment?
Inventor Pro 2014 SP1
HP Z400 Workstation
Intel Xeon W3565 @ 3.20GHz
12Gb RAM
Win 7 64 Pro SP1
Spacepilot Pro v3.17.4
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Aug 28, 2013
I just was upgraded to Inventor 2014. I've got an assembly that I want to convert into a weldment. The "Convert to Weldment" icon doesn't appear where it used to be in 2013. I cannot find a way to make it pop up. Is it no longer possible to use this button to convert a an assembly into a weldment?
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Mar 25, 2013
In past I replaced components in Assemblies with this sub:
Sub testReplacePartInAss()
Call ReplacePartInAss("W:INVENTORTPart1.ipt", "W:INVENTORTPart2.ipt")
End Sub
[Code] .....
But if the assembly is a weldment assembly the line
If oOcc.ReferencedDocumentDescriptor.FullDocumentName = sInAssFilename Then
creates an error '91' that the object is not set.
What has to be changed in this code so that it will work with 'normal' assemblies AND weldment Assemblies too.
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Oct 27, 2013
Is it possible to change a normal assembly into a weldment assembly through iLogic?
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Apr 24, 2012
Open the attached file 207665-124.ipt. how their is only one Solid Body, but the iam needs to be updated because the user added one more part to the assembly. As soon as it updates now instead of one Solid Body I have 2. I don't want 2 and this is not typical. Even if I derive the 207665-120 into a brand new part file, it is only one body. What is causing this to seperate into 2 bodies? I tried to re-create this from scratch and can't, but he has several files like this that need updates and the 2 bodies causes problems with the holes.
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Oct 7, 2011
(Inventor 2012) I have a weldment. I can make holes and save, I can make revolved cuts and save. I can make chamfers and/or fillets and save. But if I try to extrude a cut (any cut), I receive an error.
Problems encountered while saving the document.
Error(s) detected while writing segment AmBREPSegment in database C:lah-blah.iam
Error detected while saving object of type MIxTransactablePartition in C:lah-blah.iam
Error detected while saving object of type MIxPartition in C:lah-blah.iam
The attempted write operation did not succeed. Part file may be corrupt.The database in C:lah-blah.iam could not be saved...
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Dec 6, 2013
I cannot find the Convert to Weldment in the 2014.
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Apr 22, 2013
Is it possible to export a weldment and include the weld volumes? I'm attempting to export to an .stl file and the welds are missing in the resultant file. (Or am I doing something wrong?) The weldment was converted from a standard assembly file, but the BoM structure was set to Normal, not Inseparable.
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Apr 3, 2013
I have a weldment which includes a sheet metal part called sPart. I want to show a detail of the flat pattern of sPart on the weldment drawing and still be able to balloon the flat as the part of the weldment. So I clicked to add base view and selected sPart from the Preparation dropdown list under the Model State tab of the Drawing View dialog box. The problem is I cannot find an option for using the parts flat pattern.
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May 27, 2012
My design consists of two steel rails that are welded together on top of a guardrail system. To allow the weld to be added between the steel rails I have converted my assembly file to a weldment.
My question is now I have this converted assembly with it's weld in the design can this still be used to perform stress analysis on ? I am not sure the need for assembly to be converted to allow a weld to be added.
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Oct 5, 2011
What might cause some parts to retain there weld prep chamfers in the part file & other parts don't show the chamfers except in the assembly like an assembly feature?
I noticed that when parts were in a pattern & Weld Prep/chamfered, they retained the chamfer feature in the part.
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Jan 24, 2013
I'm really struggling with constraining a weldment assembly. I've attached a JPG of the Assembly but I cant get the constrains to go where I want them.
Basically this assembly is a wheel with three equally spaced stays welded to a large nut hub. I have constrained the center axis of the wheel to the center axis of the Nut so the wheel and nut will remain aligned.
What I'm struggling with is constraining the three stays to the wheel and to the nut equally spaced around the nut.
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Aug 27, 2012
I have this odd problem that when i want to do welds on a assembly, the machinng (holes) disappear. So i cannot put welding between a pipe and a hole made in a weldment.!
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Jan 29, 2013
I was wondering if there is a way to change the appearance of a face in a weldment assembly environment. I have a weldment which in the machining process a part of weld bead as well as a portion of one of the components is machined down (spot faced) and I need to change the appearance of those face to polished, but it doesn't let me do that?
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Oct 6, 2011
We are looking for a workflow example of developing casting models into machining models.
Typically our castings are made from different materials (Fig-1) and then machining (Fig-2) are created from these castings.
Is creating the casting as an iPart (with different materials) and then deriving the machining from the casting the proper method?
Doing it this way seems to force us into making a machining for each casting material instead of just one machining that is an iPart. How should this be set-up for BOM purposes and for use with Vault (Base Version)?
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Jun 6, 2012
I am using INV 2012 and I wan to to know a trick how to convert the weldment assembly back to regular assembly template.
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Jul 9, 2013
I have an assembly designed in Inventor and need to deliver .dxf files to the machinist to program the CNC machine. The machinist needs a top down view with the different cut depths represented by different layers. I managed to import the ipt file to the drawing model space with AutoCAD LT but there's a lot of overlapping geometry and surfaces from the 3d information. Is there a way to process this to be more friendly from a CNC perspective?
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