AutoCAD Inventor :: How To Calculate Mass Properties For Master Level
Oct 26, 2011
I am currently building an Iassembly and I keep running into this message whenever I go to save one of Iassembly members
It states " Do you want to calculate the mass properties for the master level of detail? if you select 'NO' Inventor will calculate the mass property for the currently active level of detail."
now when I go ahead and select yes or no, it goes ahead and places 4 BOM columns in my table with Default and Reference. What exactly does this mean? I keep deleting them and they keep coming back constantly adding more and more columns to my ipart table.
Since I am constantly suppresing and unsuppressing, adding and deleting components based on the configuration, I have to always be on another level of detail other the master detail correct?
I have a customer who uses negative material mass in Inventor to calculate buoyancy for submerged constructions. After upgrading to 2013, we have a problem: Inventor 2013 does not accept negative material mass
I am fairly new to Inventor and have recently just finished drawing up a machine made of many parts and sub assemblies and then made into one master assembly. Due to the nature of some hole positions i decided to draw some holes directly on the Master assembly thinking it would then change the original sub assembly/part file. Apparently not as i found out making technical drawings.
How i can rectify this so i dont have to re-draw all the holes on part level and keep my constraints in place?
Never seen this before, but I'm having an issue with mass incorrectly reporting in high level assemblies.
See the attached jpgs. The bracket reports a mass of 29.7 kg when opened on its own, but when checked in the browser of the next level up, its mass is reported (incorrectly) as 23.1 kg. A little investigation has revealed that the error is in the stiffening webs (which have been modelled as a single ipt). Again, if the webs are opened on their own, the correct mass is reported, but if the mass is queried in the browser of the sub-assembly, an incorrect value is shown.
In this case, it is not that significant, but if Inventor cannot be relied upon to report correct masses in higher level assemblies, this is a real worry.
I have recently made a bucket for chain (linked) and was looking to put the chain in the bucket for visual purposes and to see if the capacity of the bucket is correct.
I can get the chain linked together, however when rotated round it passes through another piece of chain.
Is there a way in inventor to tell a part/assembly of it’s physical/mass properties? I know you can make something mild steel and get weight etc, however if not constrained it still passes through as if it’s a ghost.
I'm having trouble getting mass properties of an assembly to display in an .idw. I've tried it 2 diffent ways, custom properties-model "Totalmass" where I type the mass and physical properties-model "mass" where it's automatic with update.. Nothing shows, not even N/A, but in another idw (different assembly) it works. Both text boxes are saved within a sketch that is part of a template. Both idw's use the same template. If I place text on the drawing it self it works.
To get net weight of my parts i have one template that uses the volume x density and to get the gross weight I use the real dimensions of the item (a rectangular plate without any cutting, e.g.) and then calculate x density, this way i can get both weights, and how in the most of times I need the gross, I overwrite the MASS PROPERTIES of each part with my gross weight. It works fine because all the assemblies sum the MASS of each part (that is over writed by the gross weight).
Now my problem:
In many cases when I need to use the same part many times with just a few of different details, instead of copy the part and change it, I use the same part, and in the IAM I use one feature to make this part different (like a chamber, small extrudes or even holes). But now I realized when I do this (feature in the IAM), it doesn't sum all the MASS properties of each individual part anymore ... it recalculate all the mass with the new IAM volume (with all the features)...so, in my BOM I got all the parts with the correct gross weight, but my total mass comes with the NET weight (and considering that I need the GROSS, i got the wrong mass).
Is there a way to change the way that inventor overwrite this mass in the assemblies ? with Ilogic, or even some Inventor's option ?
Is there any way to force an update of mass property values of a component from within an iLogic routine?
I am trying to produce a calibration chart showing the volumes of an irregular shaped object by taking incremental slices off the component and accessing the "volume" of the remaining portion, then writing the the results to an external file - All from within a "For - Next" loop.
The main routine works O.K. but the resultant chart only shows the original starting volume for each slice instead of the required reducing volumes.
I am a novice with iLogic and can only assume that I must somehow "update" the mass properties of the sliced object before reading its new volume on each pass.
I initially entered a few overrides for mass on some parts that I have included in a large assembly. However I now want the calculated values of mass to be used and not the overridden values. I go to the part file, erase my value, and click update and it now shows the calculated mass for that part. However in the assembly it still shows the initial overridden value even though I have tried updating it. How do I use the calculated mass values in my assembly?
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.
After changing colors at assembly level only ,below is a rule that changes all parts that have material "Plywood" to poplar works great.
However I want a rule that does the same kind of change but on only temporally at assembly level only then we can change back to default colors by removing color override.
It would be good if we can do the following
Search assembly for .ipt files that have material that contains PlywoodChange to color using temporary override of "Clear - Light" Possibility of searching more materials within same rule ie : "Timber" to be black in color"Pvcu"to be white in color
Dim oCurrentDoc As Inventor.Document Dim oDoc As Inventor.Document Dim oPartDoc As PartDocument Dim oRefDoc As DocumentsEnumeratorDim oTargetColor As RenderStyleDim oNewColor As RenderStyleoCurrentDoc =
With command massprop I can get many interesting data about 3d object, but where can I set material that my object is made of. Lets say I need to calculate volume and mass of my object which is made of aluminium, what are my options?
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've been looking for a solution to remove the unit string ie Lbs, g, kg from the value given from a 'Mass' value in a text string.
As you may all know, creating text and having a 'physical property - mass' value...the unit string is there...
Lots of people on here have the problem...no-one has got a solution.
Until now...
Basically...open the part you need to get the mass property of in your text string.
Follow the instructions on this webpage...this is the first part...
[URL]
Basically, this creates a Mass property value in the parameters table that you can call on as a text parameter.
It's similar to the custom iproperty model - mass but NOT the same.
Once you have done this, you can go to the drawing of the part and create a text string in the drawing and call it up as shown in this procedure. BUT it still has the unit string.
Here's the best bit that you want to know...
To get RID of the unit string...open up the part again from the drawing...click on the parameter icon...find the user parameter...in the Nominal value column, right click on the value and you get a pop-up that gives you 3 options...
Custom Property Format, Make Multi Value & Delete Parameter.
Click on Custom Property Format.
The pop-up window comes up...showing you the property type...in my case...the 4 left columns read Text, g (grams), Format & Precision...
On the right hand side I have a Preview of the text...then 3 check boxes...Units string, Leading Zero's, Trailing Zero's.
Units string is checked.
Uncheck it.
Close it...Save your part...go back to the drawing and hey presto!...the text now shows the weight you require as a straight value...no units!
I want to set up my drawings so that the title block displays properties from the model. I want to set this up so there will be drawing properties to extract into Vault. So I want to know what other Inventor and Vault users are doing to get model properties into Inventor drawings: Using model properties in the title block and nothing to extract in Vault or Copy model properties so Vault has data to extract.
I want to know what the best in class practice is? What are others doing? I do not want to use iLogic I was out of the box Inventor functionality.
Is it possible to have an idw file of a part as the master idw and insert that idw into a new idw or a few different idw files and the secondary idw files that were inserted update when the master idw file is edted or updated?
I am using the same ipt in multiple assemblies and i would only like to update one idw file. I do need to have as many as eight different idw files related to the single part and i would like to only update the master idw file.
We do a lot of chutes (for mining). They need to be painted on the outside only. They also need to be lined with rubber sheet on the inside. The area given in the physical tab in iProperties is the total area.
The area of the edges of the plates are small enough that we can ignore them, but is there a way to calculate half the model's area and get that result in the drawing in a text note?
We've only recently switched over to Inventor (used to be on Solidworks, where we had the same problem).
I have a cast aluminum part I need to calculate the surface area for our plating process. I have done a simple area, its not right (.015ft^2). I have derived it as a surface but can't get a volume calculation.
We design with a lot of tubing and pipe. Is there a way to add a custom property to the BOM that will automatically show the extruded length of, say, a length of pipe or tube? Also, is there a way to automatically calculate the total length of all tubing of a given size?
AutoCAD 2013 Inventor 2013 Windows Pro 7 x64 Asus Sabertooth X58 Intel Core i7 960 @ 3.2 GHz 24 GB ram
I was making some changes the other day to the parts list settings inside of the styles editor and discovered that this involved needing to make the master project file a read/write condition. I was starting to get into uncharted territory at this point, but was proceeding with caution. So I went into my vault working folder in windows explorer and RC'd on the MPF and changed it to read/write. I made my BOM changes and life seemed to be good on the heals of a long holiday weekend. I changed the properties of the MPF back to read only and I thought things were fine.
Until yesterday when I started getting this message. This shows up every time I open and check out a file from Vault. Plus it also changes my MPF on my local drive back to read/write. I am also starting to get this error message when I start a new drawing file as well.
I have an assy in which I have created work planes which are huge and annoying, so I make them invisible but when I save the assy I get a message saying the Design Current Design view representation.... blah blah..... or Unlock the Current one.
the activation is failed because the serial number i've enterred is not valid. i install AutiCAD LT on tha same computer with new Operating System(Win7)
I was checking my prints and noticed that the mass for the assembly was not shown correctly. The mass for each component is correct, but the mass for the assembly is less than the total mass of the parts..... how can that be?
Watch this video. The mass for my assembly is reported from iProperties as 10 lbs, but the mass for one of the parts is 60lbs. I would expect the mass for the assembly to be at least 60 lbs, but it is not. I tried a "Rebuild All" and an "Update Mass" on my assembly, but that did not fix it (30 sec mark in the video).
This assembly is part of a much larger assembly (around 35,000 parts). There are several more assemblies doing this and I need to get the mass correct.
I have an assembly that i need to know the mass of, easy enough, however the assembly needs to be weighed without some of the parts in it. I hought i could simply uncheck "enabled" of the unwanted parts and re check the mass, however it does not change. Any solution besides adding the wanted parts individually?
have one assy comprising of a valve, made in steel, an actuator made in aluminum, total weight combined is 36 kg.
I make this assy a derived ipt.. i have tried all the output options, single solid, multy solid and the weight is not the same.. since its a new ipt has its own material, ok makes sense.. .. So i use composite, i get the correct weight (yay), but now i cant turn the visibility off on the 2d drawing, in certain pipe spool view representations.
What is the correct procedure for turning multi material assys into an ipt.. to get the correct weights and get the drawings to work properly?