AutoCAD Inventor :: Deleting Coincident Constraint
Aug 15, 2008
I have noticed what I consider a bug in AI2009. When trying to delete a coincident constraint using the show constraint command, it is impossible to do so. All other constraints I can delete while I am in the "show constraints" dialog box, but not coincident constraints. As soon as I get out of the "Show constraints" command, the yellow dots are still showing and I can then hover over them and they highlight so I can delete them. Is this how it was intended or should I be able to delete them like the others while still in the "show constraints" command?
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Nov 19, 2013
I have created multiple sketch entities like line, arc, circle etc. using the Inventor API's. Now I want to add the coincident constraint between start point of line, start point of arc and center point of circle.
I have added coincident constraint through UI(Please see attached snap). The same I want to add using Inventor API's. which API I should use to add the coincident constraint for such multiple entities.
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Sep 20, 2012
Coincident Constraint to be offset? I'm trying to constrain a table and a MTEXT object together but they are "mating" at their Insertion Points. I cannot successfully "move" these two points, keeping them constrained.
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Jul 30, 2012
I am designing a vertical axis wind turbine just for some practice (just started using Inventor) and everything was going smoothly until I tried to "animate" it spinning. First, I set up a work plane that goes through the center of the structure, and then I clicked angle constraint "explicit reference vector." After watching several youtube videos, I figured that I should click on the work plane, click on another reference point, and then click another point that would be orthogonal to those two (right?). Well after I choose the first point, Inventor will only allow me to choose the center axis as the second option (which I think should be the third option).
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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 26, 2011
I have a block which represents a piece of equipment on a factory floor. It has two subcomponents which are blocked with the main equipment. Consider a rectangle and two smaller circles blocked together. Each of the subcomponents (circles) has a point parameter and a move feature so that the components can be moved independently from each other and from the main equipment.
Here's the issue: If a user accidentaly (or purposely) places the grip from one of the subcomponents snapped to the grip of the other subcomponent, then the two seem forever attached; when I try to grab the grip of one of the subcomponents to separate them, both grips get selected and both components move together. At this point the two components appear to be inseparable with the grips permanently joined.
Here's the question: Is there a way to separate the two components once their grips are made coincedent? Or is this a case of "just don't snap the grips together"? I'd like there to be a way to pull the components apart.
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May 15, 2013
Batching processing method to remove the coincident vertices of polyline (2D autocad 2012 version).
These polylines are imported from other application into autocad for plotting contour purposes. The coincident vertices give problem to lisp program for drawing a cross section profile.
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Aug 14, 2012
I have an assembly which has components mated to a radial surface, I need to locate the center of a round slot against an axis, I have X Y coordinates, how can I constrain that part to those X Y coordinates?
Attached is a picture of the assembly.
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Nov 28, 2011
I am currently creating a chain block to be animated later on. But, I do not know how to constraint it.
I have attached a zip file of the .ipt and .iam
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Mar 10, 2010
Maybe I've just been doing it wrong for the last 5 years, but the Angle constraint is obnoxiously unpredictable. When I constrain a part in an assembly with an angle constraint from the assembly origin plane (or anything else), Inventor always has two solutions; a positive and negative.
Is there something I'm missing here, or is just a design flaw we have to live with?
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Jun 1, 2012
I am trying to place a tubes cylindrical surface to another tubes cylindrical surface using add constraint. How do I specify which side of the target surface to apply the constraint ?
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Apr 16, 2013
I have a question regarding a transitional constraint between a pin and a surface within an adaptive assembly.
I would like the pin and the surface to be transitional only when the two parts "interfere" with each other.
At the moment with the example attached part A is remaining tangent to part B, restricting the necessary movement of part B to function properly in the mechanism.
In simplified terms I need part B to be able to break free of the "transitional constraint" of part A under certain movement conditions within the mechanism.
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Dec 29, 2011
This is probably a simple one that I am missing, but how do I get a parallel constraint applied to these two edges.
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Oct 8, 2013
I'm running 2014. Somehow, in my ignorance, I have managed to turn off the constraint symbols that show up beside the cursor as I'm sketching.
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Dec 18, 2012
Is there a way to expand the constraint window so that I can see my entire parameter formula? In the image below, my equation is cut off in the "offset" window. Or am I supposed to be inputting the parameters in some other manner?
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Jul 24, 2012
I'm having a really difficult time maintaining my parameters when making changes to the part I've made in the attachment. The control parameters for this part are:
-100 mm distance between 15mm circles
-1 of the 15 mm holes
-30 mm hole
I am new to inventor but I would also like to be able to set up my constraints correctly. I'm also not sure if my sketches are ideal for this part either. I usually get an error concerning my fillets from the base to the center support beam when I try to change the 100 to 75.
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Jun 14, 2013
How do you delete a constraint between a point and the center point of a line? (in the sketch environment)
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Jul 19, 2012
I've assembled a bolt and a slide block that is constrained to a base plate and am able to put everything in motion. I have the slide block constrained to slide the distance of the base plate and when I reach the end the bolt continues to rotate when, if this was a real part, should stop. How can I get this bolt to stop once the slide block reaches its ending constraint?
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Sep 28, 2011
How do you constrain an object to the origin once the origin constraint has been deleted. I'm not really sure how it became unconstrained in the first place. When I try to constrain the drawing using the coincident constraint it won't allow me to select the origin.
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Jul 5, 2012
Why can I not constrain placed objects with three constraints? Anything I place constrains with one constraint then is virtually fixed (without being) and cannot even be moved to allow for further constraining.
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May 16, 2013
My need is to assembly parts into an assembly by a known position in the assembly. The part has a UCS and I create UCS on the assembly programatically. What I cannot do is to constrain the two UCS. I tried this (Inventor 2013 x64 on W7/W8 64, c++ 2010 by the way DEBUG mode is not working from the IDE):
CAssemblyComponentDefinition compDef = doc.get_ComponentDefinition();
// MOdules UCS
CUserCoordinateSystems coords = compDef.get_UserCoordinateSystems();
CTransientGeometry geom = m_InventorApp.get_TransientGeometry();
CMatrix matrix = geom.CreateMatrix();
[code]...
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Apr 19, 2013
Basically, I would like to do this:
[URL]..........
(i.e., take two object Z axes and constraint them to be the same), but in C#. In particular, what puzzles me is that I cannot make
'Get the Z-axis work axis from the occurrent.
Dim oPartAxis As WorkAxis
Set oPartAxis = oPartOcc.Definition.WorkAxes.Item(3)
in C# because the Definition object has not a WorkAxis instance.
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Jul 30, 2012
See attached screen shot.
To activate the new position of the assembly of approx 5k instances takes about 5 minutes in IV 2013 when using Drive constraint. The larger the assembly the longer it takes
In IV2011 takes about 10 seconds. I've never seen the "Not responding" sign in Drive constraint window in previous versions. I'm just wondering how can avoid this "New feature" of 2013.
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May 10, 2012
We have an interesting problem after reinstalling the software. We found that there is a time lag between the mouse pointer and the line highlight to indicate we have click the correct entity. The video attached in the link below may be able to explain our problem better. In the video, we move the mouse to where we want it and it shows a time lag.
[URL].......
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Oct 12, 2011
I can't seem to get inventor to select a given parameter inside a sketch. It keeps giving me an error.
All I want to do is to have inventor Select / Highlight a parameter inside of a sketch so the user can clearly see it in the window. Ive tried heaps of different selection options, I just can't work out what ive done wrong.
Sub GetParameter()Dim TargetName As StringDim oCompDef As PartComponentDefinitionDim oSketch As PlanarSketchDim oConstr As DimensionConstraintDim oParam As ParameterDim oCmdMgr As CommandManagerTargetName = d0 ' parameter nameSet oCmdMgr = ThisApplication.CommandManagerSet oCompDef = ThisApplication.ActiveDocument.ComponentDefinitionFor Each oSketch In oCompDef.Sketches For Each oConstr In oSketch.DimensionConstraints If oConstr.Parameter.Name = TargetName Then Set oParam = oConstr.Parameter oSketch.Edit Call oCmdMgr.DoSelect(oParam) Exit Sub End If NextNextEnd Sub
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Jun 24, 2013
I have an assembly wherein one part is mated to another grounded part, with a face-to-face coincident mate. The click + drag type of movement appears to move the part, while continually solving this constraint.
However, it seems like there is no way to do a rotation in the same manner, where the constraint is continually updated. There appears to only be the "Free Rotate" command, which ignores the constraints.
Is there really no way to do this in Inventor? The application is that I am laying out a mold for many, many small parts, and I am trying to move and rotate them into position to get good packing efficiency and density. Each part will be attached to a mold base with one of the aforementioned face-to-face constraints, then slid & rotated around manually.
This seems like a really important piece of functionality. Solidworks can certainly do this, do a part rotation in an assembly, while solving for existing constraints.
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Mar 24, 2013
I am using Autodesk Inventor Professional 2013.
Motor Model 1:1 is used to turn the wheel holders at various angles. The part named "front gear spring holder" is supposed to revolve and turn the inner part of the "front wheel holder" My problem is that I want to simulate the turning of the front wheel's using contact sets or 3d/2d contact sets in the dynamic simulation environment. I do not know how to do this, but I'm almost certain the program is capable of doing so. Also the spinning of the front wheels must be able to be done along with various angles of the front wheels(while turning, the front wheels must be able to still spin with the front gear spring holder".
I have seen threads and articles that say that making gears with contact sets is not recommended or possible but i have two instances here where they work perfectly fine using the dynamic simulation with 3d /contact sets. Take a look at the simulation I have saved as well.
I will need more on this assembly in the future, including how to create bevel gears that work at 90 degree angles or spur gears with contact sets instead of just simulating their movements .
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Mar 14, 2012
Attached is an assembly that I created. It includes a timing belt, 2 pulleys, 2 shafts, and some profile lugs that are attached to the belt with a false tooth.
1. why can't I constrain the profile lugs around the radius of the belt? Also, when I created the belt and put the holes in it, they disappeared because they ended up in the radius of the belt.
2. Is it possible to create a motion constraint to this model, so that it moves like a real belt?
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Jul 17, 2013
I want to create some universal bricks creations. These bricks have studs which fit into another brick. To constraint them I need to do following actions:
- click place constraint
- Assembly >> Insert >> opposed
- Offset 0,35mm.
I would like to make above into 1 action, so just click to add this action, then select the 2 faces to constrain.
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May 14, 2013
I am trying to add an angle constraint to an assembly of a ladder design. I need for the ladder to be able to be set at an angle against a wall and not vertical. The ladder design is such that the base brackets are fixed to the ground and the rest of the ladder may move about the axis of the bolted connection at the base of the ladder. I cannot get the angle constraint on the ladder to allow this.
Inventor 2013 Release 2013 SP2
Product Design Suite Ultimate 2013 64-Bit Edition
64-bit HP Z400, Intel Xeon W3550 3.07GHz
12.0GB RAM, ATI FirePro V4800 (FireGL)
Anthony Goodwin ~ Cad Manager/Senior Designer
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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Jul 10, 2012
I have been getting this error message alot with 2013. I never got this before with previous versions. I do alot of assemblies that are made of parts that are derived from a main sketch part. The only way to remove the error is by deleting the right part out of the assembly and I can procede. I have read that it has something to do with renaming parts, but I still dont completely understand how I am getting this error. My work flow is the same.
Dell t1500 i7 8 gb ram
Windows 7 64 bit
ati firepro v4800
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