AutoCAD Inventor :: Part Movement Constraints In Assembly
Jan 20, 2012
In an assembly we can set driven constraints to drive parts etc.. or we can set the contact solver to show contacts.
Is it possible to set something like a driven constraint but so it is flexible between the set parameters?
when creating designs i like to move stuff around with the mouse to see how it works and the potential problems that might arise etc.. however i would like to still move stuff around with the mouse but restrict the movements with constraints.
so if you have a hingy flappy thing, the constraints would be set so it can rotate round the hinge as required but also an angular constraint could be set do it would work between set angles, say 0 to 50 degrees and if it gets to the limit it stops?
Is this possible, I think it would be very useful?
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Mar 21, 2013
I noticed when creating assemblies, applying a positional constraint, the parts don't move. In order to get the parts to "move" to their constrained position I have to try and drag them with the mouse then they snap into place. Also updating the assembly works as well.
What setting could I have changed so that once I press apply on a constraint it moves the part immediately?
Inventor Professional 2014-Update 2 - AutoCAD Electrical 2014
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Jun 13, 2013
I'm attempting to model a spreader bar that we have in the workshop to estimate what load it should be certified for. It will be suspended froma 2 chain sling attached to the outside top lugs and the load suspended from the bottom outside lugs.
My problem is that simply constraining the inside faces of the top lugs with pin constraints results in erroneous values as the lugs can't move relative to each other. The other method I've tried is constraining the same faces using a fixed constraint and de-selecting the z-axis. Now they can move but I end up with large stresses inside the lugs as they attempt to resist the moment that's now been created.
Is there any way to select individual degrees of freedom (both rotational and translational) or at least set up the simulation in such a way that the constraints accurately represent reality?
Inventor Pro 2014 SP1
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12Gb RAM
Win 7 64 Pro SP1
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Oct 30, 2012
it is possible to make a constraint that utilized a parameter of a part within the assembly.
For example, if I wanted to use the thickness of a plate, which I defined in the part, could I call that parameter in a constraint?
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Jun 27, 2012
how to create a simulation of a part in a sub-assembly of the assembled design?
I manage to move only the parts in the assembly. However, I can't move the parts in a sub-assembly of the assembled design.
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May 24, 2013
Are there any C++ samples of the use of C Assembly Constraints? The syntax is so much different with VB a few real examples would be really useful.
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Feb 14, 2013
Why is it when I select multiple contraints for a component that I can use the delete key on the keyboard to eliminate them but when I select only a single constraint, I have to right click and select delete on the context menu. The delete key will not work on a single constraint.
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May 7, 2013
Just started converting over to 2013 and I can no longer edit constraints. Is this part of the new way.
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Nov 16, 2011
I have a bunch of assemblies that are acting this way and I am not sure why.
I have built the parts and built the sub-assemblies with-out errors, once everything looks good I place the subassemblies into my top level assembly.
Everything still looks good with no errors.
I do a rebuild of the top level assembly and find 20 or so errors.
Most of the errors are bogus and editing the constraint with-out changing anything removes the errors, typicaly.
On a bunch of the sub-assemblies the error showed up in the top level assembly, so I edit the part only to find the constraint is relevant but with errors so I suppress it to remove the error. Save and go back to the top level assembly only to find there is another constraint error in the same assembly that I suppressed the constraint to remove the error. This goes back and forth between top level and sub-assembly till all constraints are suppressed or deleted for the sub-assembly. Then the same thing happens to another sub-assembly.
The only solution that I have found is to delete all constraints and rebuild each sub-assembly with the same constraints that were initially used.
How do I stop this snowball effect?
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Apr 4, 2013
I want to use I logic to adjust an assembly constraint based on T/F value passed from a master sketch.
I have passed the paramater T/F and/or a user paramater as described in this thread using link (neet trick).. but when the code fires it only works on the true application and not the false.. if i open the rule and then close it the update button becomes available and when updated the false condition updates sucessfully. I have tried just re-running the rule to no avail. It seams that the only way I can get it to triger a false condition is to open the rule... close it and update.
If Parameter("iTrigger0101000") = 1 Thend37_Header1 = -.25 ind34_Header2 = -.25 inElseIf Parameter("iTrigger0101000") = 0 Thend37_Header1 = -.25 ind34_Header2 = 0.0 inEnd If
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Jul 12, 2013
I am atempting to mirror a large assembly, and noticed that not all of my contraints were retain, is there a way to make to mirror and retain all of the contraints?
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Feb 9, 2005
I place and fully constrain two components in an assembly them mirror them. To my surprise, the mirror parts are not constrained. I grab them and move them anywhere I want. I closed without saving, reopened and grounded the mirrored components.
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Dec 30, 2013
Im after programmatically mating 2 components together in an assembly. My stages are as follows:
1)Create New Assembly
2)Add .ipt's
3) One-by-one, mate all the parts together (each part has a plane named "WPStart" and "WPEnd". In each part im after the WPStart being flush mated with the WPEnd of the 2nd part - see image attached. In addition I would like to mate al the XZ planes in each of the parts fluch together and likewize the YZ planes.
3) Mate the parts together
Dim FlushConst As FlushConstraint
FlushConst.AffectedOccurrenceOne = oAssyDoc.ComponentDefinition.Occurrence.Item(1).Workplanes.ItemByName("WPStart") <--------
FlushConst.AffectedOccurrenceTwo = oAssyDoc.ComponentDefinition.Occurrence.Item(2).Workplanes.ItemByName("WPEnd") <--------
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Jun 6, 2012
Looking for views on what the best method is to copy a selection of parts in IV 2013 which will result in the copied selection to retain it's constraints ? I have an assembly which I have used the mirror method on a batch of parts, also used the standard copy method and pattern components.
Autodesk Inventor Professional 2013 SP2 64-Bit Edition
Windows 7 HP Z400, Intel Xeon W3550 3.07GHz
12.0GB RAM, ATI FirePro V4800 (FireGL)
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Oct 29, 2011
I just recently installed Inventor 2012 and I'm finding it extremely annoying assembling parts together. I recall in 2011 I could see the parts interact and how the constraints would effect assemblies as I change offsets, relstionships, etc. But now in 2012 I can't see any of that until I acutallly apply the constrain and if it's wrong I have to back and edit it over multiple times till I get what I want. Is there anyway to get a preview of what will happen before I click the apply buton?
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May 28, 2013
Given the list of AssemblyConstraints how do I list them textually? For example
// error checking removed for brevityCComPtr<AssemblyConstraints> pConstraintList;pAssDef->get_Constraints(&pConstraintList) ; _tprintf_s (_T("The assembly has %d constraints
"),pConstraintList->Count);const int ikNum = pConstraintList->Count ;for (int iConstraint = 0 ; iConstraint < ikNum ; i++) { CComPtr<AssemblyConstraint> pConstraint; hr = pConstraintList->...
what to put here? how to print out more data here...? }How do I get each constraint from the list?
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May 8, 2013
Working in an assembly with sub-assemblies. I am trying to move a part not much more than the diameter or a hair, but this is causing lots of problems.
I am forced into editting an assy constraint. So I go thru the menu and except the edit.
Constraint box opens / and iventor says "ready" but it will not let me select and surfaces to define the mating.
My question is What is it the constraint is ready for?
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Mar 28, 2012
Dear Sir, In particular project, when I insert part in Assembly file, It is inserted as a Tube & Pipe run part. so that It is not Grounded automatically. What is the settings by which I can insert as a normal part in assembly file ? I have attached herewith the JPG file also.
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Apr 1, 2013
I`m looking for the iLogic code that can change one parameter (user defined) for each (ipt) part in assembly (iam)
The one below doesn`t work.
Sub Main Dim oApp As Inventor.Application = ThisApplication Dim oAssy As Inventor.AssemblyDocument = oApp.ActiveDocument For Each oSubDoc as Inventor.Document In oAssy.AllReferencedDocuments On Error Resume Next Parameter(oSubDoc, "FH") = 15.26 Next End Sub
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Dec 11, 2013
I would like to simplify this assembly into one seamless part for FEM calculation:The assembly consists out of parts that, in reality, will be welded together. Due to their form, there is no way to place them exactly onto each other, therefore there are slight gaps between the parts:
Now when I try to merge the assembly into one part via "simplify" --> "create simplified part" and choose "single solid body with seams between planar faces merged", Inventor does not fill these gaps (even though it displays only one part in the bottom right corner of my window). Unfortunately, the remaining gaps brings "contact" problems in the FEM simulation.
how to close the gaps and really merge the assembly into one part?
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Nov 15, 2013
New user 2014
Part created in assembly does not update to part file.
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Mar 29, 2012
I have a part that has protrusions. When i mate that part up to another part that second part needs to have cutouts/holes to receive those protrusions.
i mainly use it in sheetmetal parts. and use the rectangular protrusions on de contour to mate up with corresponding cutouts in the other sheet. this works with positioning and also makes for a nice weld spot/area.
But also for making holes to accommodate a mold pin used in custom punch dies. I want the intervening part to receive a corresponding (propperly tolleranced) hole automatically. Much like a bolted connection does.
same for parts like circlips. i want them to automatically generate the seat in the part it's mated to. Rather than using the axle generator.
Ofcourse one can place the parts and do an in assembly interpart projection and go from there, but i want the part to generate the (predifined) modification to the other part. It would save time and also reduces problems as the parts are moved about or even removed.
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Jul 1, 2013
I have an assembly with 10 parts in it. We use many assembly features at the assembly level (Revolve cut, Extrusion cut..etc). How to find the mass difference of each part by comparing at its parts level and its assembly level.
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Oct 3, 2013
I have a two part duct fire damper assembly. The IDW has the combined two part assembly, which I know how to turn the CoG on, so that it can be dimensioned. The problem is each piece will more than likely be hoisted separately so I would like to show the CoG for each piece, not the combined master assy.is there a way to do this?
Inventor 2014
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16GB RAM
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Aug 20, 2013
If I want to find part which is inside another part or assembly, which means no matter how I turn camera, I always cannot see that part.
Does inventor has this function? Or is it possible to develope by .NET API?
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Feb 7, 2013
I can't seem to find how to use the Inventor 2012 API to project an entire sketch profile from one .ipt to another .ipt file from within an .iam file.
i7-2720QM Dell Precision M6600, Win 7 Pro 64-bit, 8GB RAM
Autodesk Product Design Suite Ultimate 2013
Autodesk Vault Professional 2013
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Dec 3, 2013
Why when I mirror a part in an assembly the mirrored part gets a new part number? I want to mirror only the position of the part which is always the same part. Is it possible to do that in Inventor?
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Aug 10, 2012
I need to drive more than one constraint at a time. The assembly consist of a hydraulic ram that pulls a cable which is routed around a few pullys and then pulls another linear moving member. I don't really care about modeling the cable right now, I just want the cylinder piston and the final member to move in unison. I can only drive one constraint at a time, so I figured I could relate the two constraints together by setting them equal to a parameter (variable), but that isn't working. Is it me or is driving multiple constraints at a time something that would be very useful for a lot of applications?
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Aug 28, 2013
I'm modeling cables running through a series of cable clamps. I'm working in an assembly with my structure as one part, clamps as seperate parts, and cables as separate parts. I modeled the clamps first and am using them to create my 3d spline to run the sweep. The clamps have moved several times and each time, the sweeps (cables) do not update to follow the new clamping path. I have tried multiple ways of solving this.
I've tried to redo the splines using "Include Geometry" and running the spline through the centers of the clamps. I've also deleted the constraints (which for some reason turn into fixed) and reapplied them as coincident constraints. However, once I setup these coincidences, they always change back to fixed.
In a last ditch method, I've created 2d sketches at EVERY clamping location (yes that's alot of sketches, time and effort) and projected the circular geometry to get a center point. This has seemed to work, but is so much work, there's no way we could use it regularly.
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May 8, 2013
I am in Inventor customization using VB.net as development language.
There is one issue which is troubling me from some time.
Is it possible to identify the name of parent assembly of part/sub-assembly.
For Instance there is a Sub-Assembly/Part, how can i identify the parent assembly using VB.net without opening that assembly.
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Oct 1, 2013
I have an assembly of stair made from steel. There are lots of part the same. Is there a way to make a hole (inside assembly) to one and that hole would appear on all of them.
And another problem, how can I made cut (inside assembly) through more then one part so that would affect a part also when I open it alone.
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