We want to obtain the center of mass of two or more subassemblies within an assembly. How to do it? The subassemblies may or may not be connected to each other directly.
View 9 RepliesI made a complex assembly from Solidworks few years ago. I imported it to Inventor 2012. How can I find the coordinate of the center point of the: a) parts/sub-assemblies, b) the complex assembly as a whole? Under Application Options, I have already checked: Sketch->Display->Coordinate system indicator. Under the assembly tree, I can go to the Origin of each sub-assembly/part and make the corresponding Center Point visible. However, I want the x,y,z values.
I copied and pasted a sub-assembly/part to a new assumbly file and then used VRMLout to export. When I imported the .wrl files to another application, the location of the parts/subassembies are not correct. I think they all became (0,0,0).
How can see visually the center mass of a part or assembly?
When I'm checking in the Iprop., I see the center of gravity coordinates, but it there a way to "see" it (some visual representation)
Inventor 2012 Pro.
I7 workstation
I am wondering is there a command that can let me find the center of mass for a linear object.
In particular I need to find the center of mass for an arc.
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!
How the COM center of mass is calculated in the measure utility?
View 2 Replies View RelatedIs there any way to obtain the X and Y location of an iFeature that is placed on a center point? I cannot find a way to relate the iFeature to the point or vice versa with VBA. Holes are easy to relate but I am stuck on relating iFeatures.
My goal is to obtain the X and Y location of several iFeatures placed a piece of steel channel.
Inventor Professional 2014 64 Bit
Windows 7 Professional
NVIDIA Quadro FX 4600
Dual Intel Xeon E5540 CPUs
16GB DDR3 Ram
I'm trying to obtain a louvre iFeature for Inventor 2010. the ifeature on the c-bliss website no longer seems to be available... it redirects to zeevix.com or something.
View 1 Replies View RelatedI need to define a mate constraint with a workplane as EntityOne and a midpoint from an Edge as EntityTwo.
API-Help tells me valid objects are planar faces, linear edges, vertices, cylindrical faces, conical faces, spherical faces, revolved faces, work planes, work axes, and work points.
The Edge object gives me StartVertex and StopVertex, but what about the midpoint?
I'm having some fits with the constrained orbit center. It seems to me that It used to always be in the center of the screen when I would use Shift and CMB. Now it seems to be stuck on the center of my assembly/part. I know that I can hit F4 and long select LMB to re-center but I have never had to do that before the last day or two. I have uninstalled all the Beta Add ins I had installed and I have even uninstalled and reinstalled Inventor Pro 2014.
Is there an option somewhere that puts the default Orbit Center to the center of the screen?
How can I see the mass of a solid, or if it's not possible, at least the volume.
View 1 Replies View RelatedI 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 am using 2013 x64, SP2.
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?
View 6 Replies View Related 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?
How to set the mass calculation accuracy to 'Very High' when doing calculations in iLogic.
I asked for the iLogic equivalent to the VBA term:
' Set the accuracy to VeryHigh.
oMassProps.Accuracy = k_VeryHigh
and was provided with:
oMassProps.Accuracy = 24580 'k_VeryHigh=24580
However, I believe that the value 24580 is actually equivalent to k_Medium. Confirm the iLogic equivalent value of k_VeryHigh.
Original post: [URL].......
In assembly file - BOM - mass property, parts with the same name (part number) i get "VARIES"..Parts have a little bit different mass - 0,167kg and 0,168kg. I do not want to have different part number.
So, i'm going to do something like this in iLogic :
iProperties.MassOfComponent("fi_N1:1")=Round(iProperties.MassOfComponent("fi_N1:1"),1)
it works but is there any way to do it for all parts (hundreds) automagically in the loop (iLogic or VB) ?
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 have added the mass properties and I do not want the lbmass behind it. How do I get rid of it?
View 5 Replies View Relatedi found same topics as my, but i didnt find solution.
Is there any way for mass convert idw files (not same format - A4,A3,A2, ...) to pdf ?
I tried task manager, but i dont have some account for it.
I need to add weight to my parts list and notes for both parts and assy. Is there a way to get the weight parsed out from the model without the "lbsmass", just the pounds number no nomenclature I have a couple of other questions on parts list customization also. Also are these better questions for the customization group?
View 2 Replies View RelatedI'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.
IV 2012
Vault Collaboration 2012
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.
My company recently installed Inventor 2013. In previous versions we used a part with negative density similar to seawater to calculate submerged weight and CoG.
In IV 2013, it seems that the ability to calculate negative mass is not longer available.
This is how it worked in pre 2013 IV, when I could specify a negative density.
What I have is a spool made of steel. This spool is modelled as an iAssembly with four configurations:
-In air, empty
-In air, filled with glycol
-Submerged, empty
-Submerged, filled with Glycol
For this example, I now need three parts:
-Steel Pipe
-Glycol derived from the inside volume the pipe
-Seawater buoyancy derived from the outside volume of the pipe.
Each part has its own density, and the assembly weight and CoG correspond to the assembly configuration (with or without glycol) and environment (in air or submerged).
The seawater buoyancy represents the water displaced by the total spool assembly, regardless of the contents. To achieve correct weight in the submerged state, the buoyancy material has to have a negative density.
I do not want to make any of the mass parameters static, and I also fear that the CoG might not be updated correctly when using that method.
As I no longer can define a negative density, any optional method to achieve this without overriding the mass value.
Autodesk Product Design Suite 2013 SP1
Win 7 Enterprise 64bit
Intel Xeon CPU E3-1240 V2 @ 3.40GHz
16Gb Ram
Nvidia Quadro 2000
I am wondering if it is possible to do a mass change of all project files at once. What I wish to change is my content center location, template location and style manager file locations. I have all these setup already and tested with one project but I dont want to do it with the other ... LOTS! ... manually unless I must.
View 1 Replies View RelatedI think there might be a bug in Inventor 2012 with regards to derived components and their physical properties, otherwise I've never noticed it before...
If I derive a component and use an IAM as the Base Component and choose the 'Single composite feature' as the option then the physical properties of the newly created derived IPT is the same as the original IAM. That is expected behaviour when you choose one of the Solid options, but a Surface shouldn't have a mass - by definition.
If I use an IPT as the Base Component, I get the expected behaviour, i.e., a surface doesn't have a mass.
The whole purpose of creating a 'Single composite feature' as a surface is unnecessary if it's going to have physical properties...
I am having a problem with an assembly not showing the correct total mass of all of its components and sub-assemblies. The value is out by nearly 20%, over 3000kg!
I have narrowed the mass discrepancy down to a derived part of a sub-assembly. But this incorrect mass is only present when I navigate to the derived part's iproperites via the browser tree of the higher level assembly where I am having the mass problem. It is as though the top assembly got some of its mass property information from a previous point in time, i.e. possibly before the derived part's mass properties were updated, and now refuses to look at the current information.
By the way, I have opened up and checked the mass properties of each sub-assembly and the derived part; and when opened individually these show as correct. I have also tried 'Rebuild All' with no success.
Is it possible for mass properties in an assembly to become corrupted?
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?
View 1 Replies View RelatedIs there any easy way of adding custom Iprops to previously created parts and assemblies? A macro or something that could set up additional lines without having to go in and type them out all the time?
View 5 Replies View RelatedIs there a way to get a summary row in the parts list to show a total of the 'mass' column?
View 6 Replies View Related