AutoCAD Inventor :: Subassembly Constraints Constantly Need Rebuilding
Jun 5, 2012
I'm working in a large top level assembly and the following is happening
1. Assembly is happy with no broken constraints
2. Edit a constraint (in this case, to rotate a part based on an angular constraint with another part)
3. Error message pops up telling me dozens of constraints in subassemblies are broken
4. Click Accept, assembly does not visually update
5. Click "Rebuild All" button under manage tab
6. 3 minutes later the model is updated, everything is happy, model looks how it should.
This type of problem has been happening lots to different assemblies with difference constraint scenarios.
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Jul 12, 2013
Is there a way to edit constraints inside a subassembly from the main assembly, using ilogic?
I would like to supress a constraint (let's call it mate:8), which is inside a subassembly. When I right click on that constraint, and select "Capture Current State", it inserts Constraint.IsActive("Mate:8") into my iLogic code. However, there is already a mate:8 in my main assembly, so how can I be more specific so that iLogic knows which constraint I am talking about?
Inventor 2014
HP Pavilion dv6t-6b00
Intel Core i7 2670QM
AMD Radeon HD 6490M
8gb RAM
Windows 7 64 bit
3Dconnexion SpaceExplorer
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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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Sep 27, 2013
(in Inventor Pro 2014,64 bit):
I've made an stairs assembly that contains adaptive parts that are all controlled by the assembly parameters.
Here is my assembly and the controlling parameters. The stringers on the side are made with the frame generator and use the "extend" feature to get the appropriate length, as driven by the parameters. The reason I used frame generator is so that I can easily change sizes of the stringers down the road, if needed. I chose to make the parts associative so I could control all of the parameters from within the assembly instead of opening each part separately.
My goal now is to be able to use this assembly (or something similar) as a template to create new sets of stairs, all to be placed in the same main assembly.
I attempted to duplicate all of the parts (append a "2" at the end of each file name and replace components in the new set of stairs with the 2nd version) but ran into problems with the two stringers. I can't figure out what to do to get the Frame00001 and Skeleton00001 to reassociate to Frame00002 and Skeleton00002. So any time I change my slope, the original stairs will end up trying to copy the new stringers instead of keeping the old ones.
how can I make this assembly reference a new frame, and secondly?
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Aug 10, 2012
I have a model that has been made up from a revolved sketch and then had loads of bits done to it etc.. Basically it is a tapered ring with a fillet on the top edge, I need a top face dxf export for profiling and to do this I need to remove the radius on the edge, but because it is a revolved sketch and it is not filleted it is not so easy to do with other references involved.
Is there a way I can temporally rebuild the edge to remove the fillet, I tried in fusion but it won't allow a Zero fillet edge?
I can't upload the sketch to show you unfortunately.
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Nov 12, 2013
When I use ImportSubassembly API to import my subassembly created by Autodesk Subassembly Composer into my civil project, it reports error-"eFilerError".
the code like this:
atcFile = @"D:9f92eaa4ef514ac982518852e1169932.atc";
itemId = "ab660722-c69d-4ade-b373-0e9f99c94e55";
SubassemblyCollection subassemblyCollection = cDoc.SubassemblyCollection;
ObjectId subassemblyId = subassemblyCollection.ImportSubassembly("TestSubassembly", atcFile, itemId, this.doc.Editor.GetPoint("Select import subAssembly location").Value);
However, it is OK if to import subassembly provided by Cilvil 3D.
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Sep 13, 2011
This happens almost evertime I go to a .ipn to update changes and save. It freezes w/ no cahnce of coming back. Two other things that is troubling me about the .ipn is that sometimes it will rearange itself w/ all the parts at 0,0,0 and or won't let me ballon any parts. After closing the file and opening it again it either does the same exact thing or takes the balloons but throws the pick points of into space......
Inventor 2010 SP4
Windows 7 Pro SP1
Dell Precision T3500: Xeon W3550 @ 3.07GHz
Quadro 600
12GB ram
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Jun 5, 2012
The company I work for has requested what PC specifications Autodesk recommends for use with inventor. We are currently using 2011 but would like to have the recommendation for the latest release. We are having major issues with crashes, and running out of memory constantly on working with images as well as routing tubes in assemblies. Any recommendations for PC specifications I should report?
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Jul 24, 2013
Whenever anyone at the company tries to open a model that has a decal part in it, the File Edit window comes up asking if the person wants to check out the part. As decals generally never change after they are created, they are never desired to be checked out. After saying no to check out, the window then reappears stating that the local is never than the vault, even though you just finished a Get operation. Is there anyway to keep these files from needed constant updating?
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Jun 4, 2013
I opened a project that i had not been into for a month and for some reason the surface and labels will not rebuild automatically anymore. Surface is set to rebuild automatic and i've gone in and changed the regenauto from on to off to on again, also rebooted the computer with no luck. I have a combination of feature lines and points. If I edit the elevations along the feature line the contours do not rebuild and the label does not change either. If I hover over the elevation node in the feature line it will show the new elevation but the elevation label for that point does not reflect the change, neither do the contours. If it is a point and I change it with the panorama window, the elevation tag will change but the contours do not rebuild until I tell it to rebuild. Any slope labels going to that point do not update with it though.
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Apr 26, 2013
Rebuilding viewbase views? I have a drawing with unresolved views and I'm not sure how it happened.
On a semi-related note.. Does viewbase based sheet layouts make Autocad more unstable?
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Apr 23, 2012
Why do we not have the "=" (equals) constraint option in 3D Sketch mode? It seems like a very basic need for a constraint. Is there a reason why one should NOT want to have an "equal" constraint in a 3D Sketch?
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Feb 16, 2012
All I need to do for now is to align one part to the center axis of another part. Later I will constrain but for now I just need to see where the two meet so I can project geometry onto a draw surface. So, all I need to do is make their central axes coincide on one straight line.
I can achieve the same result by counting the various lengths but I'm hoping there's a simpler solution.
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Aug 20, 2012
Assume a beam like the one in the picture below.
How must I configure the constraints?
The left constraints should be a "Fix constraint" on the edge(not the face) I assume.
But the right constraints must not fix all DOF's.
How can I configure the right constraint?
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Oct 1, 2013
My company has an access database that has all of our service data on it. I am currently considering rebuilding the database because it is a database with one table and a million fields. I want to split the database up into separate tables with relationships. All of these tables would be linked based on the same key field Service_ID.
Now here is the hard part. The data would be in a one to many relationship with one record for service info and multiple records per service for pipe info. The data is currently linked to objects in AutoCAD Map 3d 2014 based on the Service_ID key field and a "service" link template.
If i rebuild this database, am I going to lose all of my links? or will i retain the links? Also, is there a way to automatically generate links based on the service_ID field? For instance there are 3 records of pipe information for 1 service. Previously all of these records would be in the same table, but now the tables are split. Since they have the same Service_ID as the Service information, will the links show up?
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Oct 13, 2011
I've just installed 2012 and I seem to have a problem with constraints.
The basic problem is that the SHOW CONSTRAINTS command doesn't show the constraints for geometry that clearly has them. For example, if you delete a horizontal constraint from a line and then add a horizontal constraint to the same line, the line will be constrained but the constraint will not show up.
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Aug 12, 2012
is it possible to copy and paste parts in an assembly but also keeping any constraints set on the part?
I.e. if I had a square block constrained to a flat face of a floor, when I copy and paste the block many times I would like all the copy blocks to still be constrained to the floor.
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Sep 6, 2012
Is there a way to get a list of constraints that exist between two parts in an assembly?
It will take forever to go through each and every constraint for one of the parts, checking the "Other Half" of each just to find all constraints between to specific parts.
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May 22, 2012
I'm trying to build a c# program where I can test a simulation for a robot project I have made angle constraints in inventor and now I want to be able to send numbers to specific joint.
With the code listed below I can get all the constraints from a selected part and get the name of the specific constraints.
I find it confusing that most of the documentation is in VB so this is what I have discovered on my own, perhaps this isn't at all the way to do it.
Inventor.SelectSet selSet=asmDoc.SelectSet;
try
{
[Code].....
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Nov 22, 2013
Trying to create a gimbal with a supporting frame, an outer square frame, and an inner square frame. when i insert the outer square frame into the supporting frame, i constrain it so that the axis of the hole i have drilled in my frame and the axis of the hole through my supporting frame are aligned, i then constrain a face of it to be a set distance from a parralel face of the supporting frame to centralise it. this works ok, and i can rotate this frame as i like. When, however i insert the inner frame and constrain the axes of the holes drilled through it to the axes of the other holes drilled through the outer frame, and two faces to be a set distance apart, it allows me to rotate my inner frame, but no longer allows me to rotate my outer frame! what have i over-constrained?
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Mar 27, 2012
I'm using the line tool in a 2d sketch. First, I draw a polygon with the tool. Then, when I come to move one of the lines with the mouse cursor, it detaches from the other lines, and becomes a single floating line on its own.
As far as I can tell, it has nothing to do with the fly down constraint menu options, but i may have changed another option elsewhere in inventor and not have realised it.
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May 6, 2013
Using "drive constraint" I would like to simulate the action of a "soft close" mechanisim on a drawer...fast movement for the first portion of travel, then slow movement for the very last portion of travel...
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Nov 4, 2011
I have some "insert" constraints for DIN rails in holes. I've moved the holes, but the DIN rail doesn't move. The refresh button isn't "lighting up", or when it does, it does not do anything to move the rail. Is there something that's been "shut off" to keep things from moving?
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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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Oct 13, 2011
How do you mate two surfaces so that the item will not move any further once it makes contact with that surface? i.e a rotating cam which is designed to stop once it comes into contact with an object / surface.
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Feb 10, 2012
Something is strange with the constraint activity.
I'm using the constraints to assemble a project. I select the parts with the proper constraint, when "apply" is clicked the parts do not "pop" to location as they use to. I have to go up to "manage" the click "rebuild all" for the parts to move to new location.
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Nov 11, 2013
Does Inventor (2012) have the option to view sketch constraints as a list? I feel like I am playing pictionary trying to find out what constraint is what and what it is constraining and it doesn't work that Inventor stacks anything nearby on top of each other.
I've attached a file showing what the problem is, please don't judge the model tree. I was prototyping as I went so it is messy.
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Apr 25, 2013
Out of the blue, my IV 2012 has decided to stop showing the preview when applying contraints. I have made no changes to any options or configurations. Preview check box is checked.
I tried unchecking and rechecking it to no avail. Any thoughts on this behavior ?
2nd out of the blue issue - when I insert a part into my assy (part file is in the same folder where the assy file is located) IV decides it needs to create a sub-folder and re-saves that part to the sub-folder. I mean, WTF ? The part file is already there. Why create another version of the part in a sub-folder. And why would it just start to do this out of the blue.
Again, I have made no changes to any configurations, options, settings, templates, etc...
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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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Oct 10, 2013
the .iam assembly and the .ipt parts are to follow.I'm not very concerned with the teeth meshing properly at this stage. I just want to get the rotational constraints correct first. There are two situations that I am trying to work out, and I think I took care of the first one.
Situation 1: Blue carrier is grounded.
Input: Rotate purple sun gear.
Result: red planets turn the orange planets which turn the green sun(green sun to purple sun ratio = 1:1 but in the opposite direction)
Situation 2: Purple sun is grounded (Blue carrier is released)
Input: rotate the blue carrier
Result: I want the planets to still be able to rotate, and basically be driven by the purple sun which is being held. This should then drive the green sun to rotate in the same direction as the blue carrier gears.
The issue here is clearly that the red planets will not rotate since the purple sun is grounded. What should the constraints be instead of a simple rotational motion constraint? In a perfect world, I would like to not have to ground the purple sun, and only have the purple sun rotate when I specifically rotate it. The main input to this system is rotating the blue carrier gear. The purple sun is simply a control/variant.
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