AutoCAD Inventor :: Center Of Gravity Of Each Of Parts In Assembly
Sep 22, 2013
I have created assembly (lets call it main assembly) in which there are 4 other assemblies (lets call them sub assemblies).
Now in the main assembly document i want to display center of gravity of each of the sub assembly.
When i open each of the sub assemblies and turn on center of gravity of each of them, when returning to main assembly view it displays center of gravity of main assembly, not of each of the sub assemblies.
Im asking for this because i want to create a drawing of main assembly and add dimensions of each of the sub assembly centers of gravity and unfortunatly just as in assembly view, when i want to display center of gravity i can do it only for the main assembly not for each of sub assemblies.
I am currently trying to show a comparison of Center of Gravity between two assembly's. One is the original state and the other has counter weight bars. I know how to get the COG to show on my drawings, but both COG locations are the same in my drawings (but different in my assembly) My problem is when I create View Representations and I toggle the Counter Weight bars off, the COG in my drawing still remains in the same location as if they were still on. I know the hard way of accomplishing my task would be to save 2 seperate models (one with Counter Weights and one without). But I would like to take full advantage of the Representation Option. Using IV 2012 Pro.
I am trying to retrieve center of gravity in my assembly, I now already coordinates given by iporoperties, now i want to measure to that specific point, is it possible to do it? or to actually show the center of gravity in the assembly?
I am trying to pinpoint the center of gravity on a curved face of an assembly. I can use the c og G command to get the true center of gravity but i would like to incorporate lifting eyes into the finished assembly. Basically I need to know how to find the C of G on a given surface. I have attached the assembly I am working on and added lifting eyes roughly where I would like them. I have tried measuring from the C of G to a face and then creating the lug above the C of G but somehow it doesn't line up.
In the iProperties, in the Mass properties are the coordinates of the center of gravity. i guess they relate to the center point and axes in the main origin folder, right?
How can i show and measure from the genter of gravity symbol in parts and drawings?
I have just installed Inventor 2012 and am experiencing a bizarre problem with placing content center parts. When I start a new assembly, and place a content center part, I would expect it to locate itself central to the assembly origin. What actually happens is that it grounds itself wherever I click on the screen. This doesn't happen with parts that I have created myself.
Is there a bug in the system or maybe an option that I have unknowingly switched off?
Inventor Professional 2012 SP1 Windows XP Pro 64 Edition SP2
I can obtain the Center of Gravity of a sub-assembly. What are the values with respect to? The origin/root of the whole assembly or the origin of the sub-assembly? How can I obtain the coordinate of the COG of a sub-assembly with respect to its origin or with respect to the whole assembly's origin?
How do I get the center of gravity to work, by measuring a distance from the origin like Solidworks? I select the “Physical” Tab under the iProperties “Center of Gravity” and it gives me” lbmass”? Also is there a way for it to show on the screen?
I have a LOD in my assembly to suppress some of the components. In the assembly, it looks like the center of gravity is correct for the LOD. Now I place this assembly in an idw with the LOD active. Now I right-click on the assembly in the idw and choose "Center of Gravity". The center of gravity shown here does not represent the center of gravity for this LOD. The CG shown represents the CG of the master LOD.
Is it possible to get the center of gravity to show on the idw that represent the CG of an LOD?
Structural shape authoring has a parameter mapping for the center of gravity. What values should these be for a C channel where the part origin is at the geometric center and the center of gravity is located along the negative X axis? I checked one of the channels in content center - it had the origin located at the center of gravity and the parameter mapping was the distance to the outer web surface (positive), with the web located in the negative X direction.
For some reason it will not let me constrain a part to the center of gravity plains. I would like to constrain lifting lugs to the center of gravity so the model will automatically update itself. Is there anyway to make this work (using ilogic or anything)?
Why would Inventor tease me with showing me the center of gravity plains in an assembly but making them completely useless?
I am trying to apply a load lengthwise on a 2 x 2 x 3/16 angle at the center of gravity using "stress analysis" in inventor pro 2014, but it won't let me apply the load at this point. I know that the load would be floating in the air at the center of gravity, could this be the issue?
Ok received parts from a customer. It was ALL mesh features.I converted some of them(the mesh features) to Solids. Some would not convert to solids (converted to surfaces).
I need to have the COG show up correctly. Yes, I have a physical COG. I know where it is supposed to be.
I am trying to use this and several other parts (with mixed, Solids, Surfaces, Mesh features), in an assembly AND balance it all thru a common lift point.
How can I correct the COG of the individual parts, so that the assembly is correct.
I have work planes for the corrected COGs, but I am afraid that I will need to calculate the new COG for the assebmly.
I am trying to replace a custom part - created from a content center part - with a copied part with a different name. (I am using the replace tool in an assembly.) However, Inventor is not replacing the part with the part I pick but rather the content center version of it.
I'm looking for the best way to create a separate assembly out of various component parts in an existing assembly so that the whole thing can be placed in an assembly as you would a part, I know it's possible to demote components within an assembly but are there any other methods similar / better ?
My assembly has grown (about 50 parts) to where I need to consolodate some parts into subassemblies for reuse and alternate iterations of the basic design.
When I import the original parts into a new assembly, all of the constrains I created are not there of course.
I've tried creating a new empty part and then deriving a new part from the assembly, but I can't add, delete or edit any parts.
I looked at using Shrinkwrap, Substitutes, iParts, Multi-body Parts, and Multiple Solids but I remain confused.
In retrospect, maybe I should have created the subassemblies between the part and assembly stage but I didn't.
I have tried just about everything and the mass properties center point of gravity is coming out incorrect.
I have created a box 300x300x300 with the center of the box at 0,0,0 (for testing the cg) . The result I get is not 0,0,0 one of the values always comes out to be not zero, depending on the orientation of the box. Is this a bug?
Dim cg As Point3d = T.MassProperties.CentroidMsgBox(cg.X & vbCr & cg.Y & vbCr & cg.Z)
I am just starting to make assembly parts from the content center and have found that for the most it is useful. Unfortunately I have found that when these parts are placed in the assembly and a drawing is make of the assembly the bill of material lists total inches of a structural member rather than quantity of piece parts in the quantity column. Thus a 10" tube shows a QTY. of 100 in. rather than 10 piece parts. I have removed the check to export B_L in the function menu but that does not solve my problem. Is there a way to get this to read quantity of piece parts and not total length of material used?
Inventor Premium 2013 SP1.1 Vault 2013- plain vanilla version HP G71 notebook celeron cpu w 4gb RAM and 64 bit system Win 7 home premium
I'm having problem placing fittings in my piping runs from parts that I have created. When I try to place them in I come up with an error "Place Fitting can only be used on authored parts." Now as I have said I am new to inventor so I have no clue what this means. I know there is a content center that has parts used for piping runs which I have been using but it doesn't have all the parts I need so I have been making them.
I am having a problem with the display of a custom content center part in an IDW. The cc part has been added to a weldment assembly and has 2 preparation holes drilled into it within the assembly. These holes display fine when showing the whole weldment assembly in the IDW but when I add the cc part on it's own it does not show the drilled holes. I understand this is perhaps because the cc part had to be prepared with the holes and these preparations have not carried over on the IDW, is there a way to display preparations in this way for single cc parts ?
Autodesk Inventor Professional 2013 SP2 64-Bit Edition Windows 7 HP Z400, Intel Xeon W3550 3.07GHz 12.0GB RAM, ATI FirePro V4800 (FireGL)
I'm working on some plumbing in an assembly and in the past I've inserted all the fittings and pipe into a main assembly. Then created a sub-assembly and moved all those parts into that assembly. However I cannot drag and drop the pipe fittings around in the browser window. So I'm unable to move them to a sub-assembly.
I last remember moving content center parts between assemblies in Inventor 2012 and I'm currently running 2013.
You're code is definitley a great starting point, and will most likely save me a ton of time!
I am currently diving into a small project which should save a lot of time for designers in the end if it pans out.
Issue being resolved:
We use the Vault and have a ton of machines that get re-used from time to time through the Copy Design method. There's obviously some changes that are made from job to job, but the big issue is changing a machine from an Imperial to Metric one. This is the time (and mind) consuming process I'm looking to shorten.
What I have:
Currently I have a code (few tweaks needed but it works) that is run from an upper assembly. This code then cycles through each and every sub assembly and part that exists within it. As it cycles through, it checks for hole features which are tapped, and if it finds one of these instances, changes the thread from Imperial to Metric according to a Hard Coded set of values.
Current Dilema:
What's the point of changing the holes if the designer has to go through the assembly to change the bolts and fasteners anyways?
I've practiced a bit with your code and been able to replace items, the issue is everything must be hard coded in order to do so. My question is:
Is there a way to get the Family from the Part Occurence / Document / Anything related?
I've looked through the API, but have only found that everything related to the Content Center.... is only accessable through the Content Center, and nothing else.
For Example, yes I am able to tell if a part has come from the content center (ie. PartComponentDefinition.IsContentMember), but that's as far as it goes, just a simple Boolean.
There MUST be a way to find out some sort of Content Center information from the direct Part / other related documents. I've looked at the "Replace Content Center Part Sample" provided in the API, but this example hard codes the ContentTreeViewPath as well.
In the end, I don't quite understand the point of hard coding this path with no way to access it through the Part Document. This only creates the need for constant manual change and / or MANY rules to compensate each and every family.
