AutoCAD Inventor :: How To Constrain Movement In Slot
Jan 9, 2013
I have one problem and I would like to get your opinion how I could solve this.
I can't share models I have problem with, but I made another with the same problem.
I have two parts - one with slot, another with "pin". How to constrain the "pin" to always move in slot?
I had some ideas but non of them worked for me:
1. Use the Transitional constrain came first in mind, but it gives unsuspected results in this situation. Pin part is jumping around and ends up contrained in another place ir should be.
2. Contact solver kind of do the job, but it works quite bad. I gives no control or accuracy (i can not control how much pin is moved out)
3. I even thought of point on 3d sketch constrain, but it can not be done
How you would suggest to constrain the movement? I hope I stated problem clear enough.
Is there a way to do this? 2 parts, 1 has a hole in it and the other has a slot. I want to constrain the center of the hole to the center of the slot. How do I do this?
I am trying to produce an iFeature that can be used as a punch/slot within a sheet metal component.
I have had minor success creating basic dimples before (simple revolved features), but this time I require a more detailed feature. I haven't been able to produce this part (see attached) as an i Feature. I believe it is because I have used a loft.
What alternatives are there? (I feel if I could get a good grasp on the limits of iFeatures that I could really make my modelling more efficient and versatile).
how to put a center line on an open ended slot. Say in the front view you can see the radius of the slot with horizontal tangents running to the end of the object; this isn't the problem. When creating the top view, you only see one hidden line indicating the arch, but the other side is just open to the end. You have no means of finding bisectors.
I've added a jpg file, looking for the center line in the top view.
I am trying to put an angular dimension from a hole to a slot positioned planes 90degrees to each other. How can I achieve this? Typically, it depends on how it is put into the ipt file but I didn't know how else to put the slot in therefore only a point was put in at that angle.
I'm working on a little trackless train at the moment. I have a working model of the train going around a curve, but I cheated a bit, by constraining the center points of the axles to the curve, and then had the wheels angles based off the drawbar angles.
I have began working on a more accurate version, where the angled wheels are what drives the carts around the curve. Long story short, if you have a thin playing card in Inventor, how can you restrict motion in the normal direction, allowing the card only to translate tangentially no matter how it is orientated in the model space?
Constraints are all based on relationships between two parts. Is there such a thing as restricting a part's movement in certain directions? The reason I ask, is I would like the wheels to follow the direction they are oriented (not being dragged in a normal direction, something resembling slip motion).
Essentially, I would like to do this without using contact friction between the ground and the wheel (which is what actually makes the wheel follow the direction of its orientation in real life).
I have a question about limiting movements. In real life, when you close a door it stops as soon as it hit its frame. I want to do the same in Inventor.
I am have a model of a scoop that I would like to animate to show motion and check for interference and clearance.I was told by a friend the best way to create and assembly is to create it as it would be built.
Doing this, I created the cylinders and added to them to the main assembly as an assembly, but I am having trouble controlling movement. I checked off flexible for each cylinder but using the mouse to try and position the scoop bucket and front frame is undesirable. I know I could apply mate constraints to check for clearances and movements, But seeing the scoop move in a regulated motion would be need. Could possibly be used for marketing purposes as well.
Is using dynamic simulation or studio better? I have heard good things about the Wasim Younis Series - book
Does his books get into how a model should be assembled/created before trying simulations?The boom moves off yellow cylinder and the bucket moves off the red cylinderA 4 way joystick controls this movement (hydraulically), is it possible to simulate a joystick to control this animation?
The blue cylinder is controlled by a 2 way valve, that steers the front frame.I know uploading a model is the best way to get fast accurate solutions, however this model is currently over 200 parts, so I figured a .DWF export was the easiest way to give you a visual representation.
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?
I have an assembly of a rod in a cylinder. When compressed, this rod sticks out 10mm from the cylinder. When extended, this rod sticks out 50mm. I am trying to create a drawing which shows the compressed state and extended state together.
Why is it that when you create the first constraint between any two components, the secondary component moves not only to satisfy the constraint, but also in ways that have nothing to do with the constraint. This is not occasional behavior, it happens every time.
I always have to stop and move the secondary component back out of the way to get to the other features I need to reference to continue.
I have to make a vice and I am trying to make the vice move. I am trying to use the screw simulation in dynamic simulation but don't know how to do it? I have only made the screw and the nut or the thing that it screws into to make the vice work.
I have a stress analysis result that doesn't make sense to me. I have a flat plate, that is loaded with 100psi equally throughout the surface. I have an array of bolt holes that are 120mm x 109mm spacing. When I do the simulation and look at deflection, I see more movement on the ends. I expected the movement to be consistent eveywhere?
Is this an Inventor issue, or are my expectations in error?
On a side bar, is there a better way to constrain holes than on their edges? I would think that would give errors on the stress levels due to the point (line) contact.
Inventor 2011 Pro 64 bit Windows XP Pro 64 bit Dell Precision PWS390 Intel Core 2 CPU 6700 @2.66GHz 7.93 GHz Ram ATI FireGL V7200
I've managed to hack together some code to draw a rectangle and dimension it. Now I want to constrain it to the origin. I figure either using two dimensions from a top/side to the origin and setting the dimension as half of the other respective dimension would work. Or constraining the center point of a top/side line to be vertical/horizontal to the origin.
The problem I'm having is I do not know how to reference the origin. So until I figure out how to reference the origin point I can't use either method.
Public Sub DrawSketchLine() ' Check to make sure a sketch is open. If Not TypeOf ThisApplication.ActiveEditObject Is PlanarSketch Then MsgBox "A sketch must be active." Exit Sub End If ' Set a reference to the active sketch. Dim oSketch As PlanarSketch Set oSketch = ThisApplication.ActiveEditObject ' Set a reference to the transient geometry collection. Dim oTransGeom As TransientGeometry Set oTransGeom = ThisApplication.TransientGeometry Dim oUOM As UnitsOfMeasure Set oUOM = [Code].......
I've made 2 parts and I'm attempting to constrain them but I can't seem to get it to fit properly.The transition should fit at the opposite end of the 2 square cutouts with the square end of the transition inside the cylinder.
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 HP Z400 Workstation Intel Xeon W3565 @ 3.20GHz 12Gb RAM Win 7 64 Pro SP1 Spacepilot Pro v3.17.4
I am trying to CAD a model rocket I just made so I can test the aerodynamics of it. I have all of the individual parts made in inventor, but I am having trouble getting the fins on the rocket.
How can I constrain the fins (which have a flat face) to the outside of the cylindrical rocket tube? The photo shows the fin and the face (the narrow and long face) that I am trying to constrain to the tube.
SO what is everyone say, trick about speeding up constrain execution. I have started working on this new project with 2013. And i'm finding myself losing alot of time. Basicly what i do is insert part from our database or content center and assemble them. So 80% of my activities on inventor are constraints. Right now i have this assemblies 175 / 156(small to me). And executing a constraint is minimum 4 seconds each time. If you consider that about 3 contraint is needed for each piece and final total part will probably be around 1000. i'm losing alot of time here
Yeah, i am not using preview. Why is inventor recalculating that much each time? Is it doing a rebuilt after each constraint?
What have you done that really increase the excution time of constraints?
Workstaion is Windows 7 64bit Intel Extreme i7cpu I975 @ 3,33 12bg ram 4 ssd in Raid stripping.Nvidia FX3800 Inventor 2013 SP1
I am trying to determine how to properley constrain the assembly below, so that the compression of the rubber gasket will be properly indicated.
Currently I am seeing the deflection of the shelf in the downward direction, but I do not see any indication of stress in the gasket behind.Currently the gasket is "bonded" to the steel tube the screws are bonded to the shelf bracket and the steel tube.
I put in "work axis" at the center line of the shelf bracket and the CL of the gasket, but I can't find a way to constrain to a work axis.The file is too large to upload here...
I'm trying to make a constraint allowing the dark smaller cylinder (1) to run in the copper track (2). I want the larger cylinder (3) to be able to rotate around its own axis, while everything is rotating around the Z axis. I've successfully constrained the parts so that all the parts can rotate around the Z-axis but when I constrain the smaller cylinder (1) with the tangent constraint with the track (2) the smaller cylinder is not able to move around on the face, it's just glued to the face.
I want the smaller cylinder (1) to recognize the copper faces as solids (so that it can't intersect the surfaces), this would allow the proper movement. I've attached an image of the parts.
How is this accomplished in Inventor? The 3D sketch environment seems intentionally crippled. Many of the constrains are not available, and the "include geometery" command refuses to include the origin (or any other planes and axis for that matter).
While tracing a tree image using splines for a school project i have run into some problems...I am creating a pattern for a plasma cutter.
When i move the points of my spline sometimes it causes the whole spline to randomly move around and twist and turn where there are no points. Also sometimes when i open the drawing some of the spline lines are out of place while the spline points have not moved.I have tried to constrain all the points but it turned into a mess.How can i stop this from happening?
Is it possible to have a tangent constrain on multiple curves?
see enclosed rough sketch, i would like the curved free end or the arm to be in constant contaced with the wavey top line on the other part, the wavey line is constructed as 3 curves but i can only get the tangent constrain to apply to one of the curves.
i would like the tangent constraignt to move between the curves so the part stays in constant contact with the wavey line. this is just a mess about sketch i suppose a real world instance will be a wheel following a shaped cam plate.
I have a sketch that Inventor changes its status between under constrained, over constrained, and fully constrained depending on dimensions (makes sense), and wether I rebuild the model (WTF?).
Steps to reproduce:
1) Open the attached .ipt file.
2) Examine Sketch11 (under Face3) It should be fully constrained.
3) Exit the sketch. Open the parameters dialog and change the value of "angle" from 45 to 60. (If you get an error message change it to 50 first, then 60. It's a work in progress.)
4) Re-examine Sketch11. It is now under constrained.
5) Exit the skecth and go to the manage tab. Click "Rebuild All".
6) Re-examine Sketch11. It is now fully constrained.
7) Scratch your head and post back with your theory.
I have an assembly with a curved line made in a sketch, and a part with a point in the bottom.
I want to constrain the point to the curved line, but the regular Constrain options wont let me do so.
I am making an animation with Inventor Studio, so I need this constrain, so I later on in studio can manipulate it and insert the first part into the other.
