Imagine I create a line in a sketch angled at 12 degrees (above the x axis) . Then I create another line in the sketch angled at 12 degrees (below the x axis)
When I list the parameters programatically both give me a value in radians of +12 degrees.
So where is the specification of the angle direction stored? As a user I cannot input a negative angle, but I can see that it is negative. But how does a program know the true value of an angular parameter? Currently I get +12 for both lines.
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.
I have a model in which we want to make lighter than the prototype turned out to be. In order to acomplish this i am removing a chunk of the metal in the lid(images attatched. I have completed the sketch seen in red and extruded it to prove that the loop is complete but when I try to reverse the extrusioni to cut from the lid dragging down the arrow as an example, it turns the effected area a darker red than normaly seen when you cut something. When I let go of the left mouse button it pops back up to the original surface having no effect and refuses to go benieth it and when I apply I get the error seen at the bottom of the attatched image. I do this sort of cutting often instead of digging down to the root sketch then dealing with the ripple effect of the changes we want to make.
I've modelled part of a ship's deck, it consists of rather simple geometrich shapes(Plates, knee brackets and profiles).
However, when i model the assembly and do some negative extrusions in order to get the model how i want it, it leads to a face failure during mesh generation.
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
Is there a quick way to rotate an object to match an angle without knowing what the angle is? I am using AutoCAD 2011 now. I was using 2007 and I had an add on command the would rotate an object using a base point and picking the two lines that make up the angle, and it would match the angle you wanted. I can not get that command to load in 2011.
I have a property line that is N 36d19'52" E but needs to be N 12d52'18" E. The obvious and calculated rotation angle would be 23d27'34" but when I rotate the line by the calculated angle it doesn't rotate to the right angle. It's off by 0d11'10"!? When I draw a line by bearing at N12d52'18" E and inquiry the angle between the property line and the drawn line the angle difference is in fact 23d27'34".
Let's say I am inserting a square block into a dwg and want to get it parallel to an existing angled line. Do I have to read the angle of the line and insert the block to that angle or is there a quicker way?
Im wondering if its possible to link either a constraint dimension to an action parameter or vice versa. Or using a linear parameter's value in an user parameter formula.
Its a 2D cylinder, for winding purposes we just have a rectangle, with a distance from the Y axis for radial.
Parametric dimensions: B=thickness, C=Lenght, R=radius User parameter: A=Diameter (R*2), Mass in kg ((((pi*(c*b))*(A+B))*1.25)/1000)/1000
For the BOM, i need A, B, C & mass
For drawing references for peoples on the floor, to distinquish a cylinder from a stick, we put lines at the top and bottom of the cylinder, 1mm distance inbetween them.
I figured that making a linear parameter + stretch on the thickness to replace the B parametric dimension, allowed me to make an array of that line, with increments of 1mm as i stretch the cylinder. The thing is that the mass formula cant take the value of action parameters....
Other alternative is to keep the B parametric dimension, and add a linear parameter as above for the array. But then i have 2 places to adjust, and from a test i made, if i change the R dimension, the linear one does not follow. Its very frustrating.
What i was hoping autocad would be able to do is distance1 for array to be same as B dimension, but it does not allow me to do that, unless im missing something.
how to convert "real world" angles of elliptical arcs into those shown in a dxf file?
Say that I have drawn an elliptical arc with its start angle on 210 degrees and an end angle of 324 degrees. The values in a DXF file, for an elliptical arc, have something to do with the contant "PI" (3.14159). I know that a full circle is 2*Pi but how to do this with elliptical arcs!!
I was wondering if it would be possible to do the following:
Parameters who can vary for lets say a rectangular profile with:
80x50x2
80x50x3
100x50x2
That these data sets/parameters are grouped/linked to eachother in the Parametric Table.
So when I'm doing my analyses with the profile of 100 and I change the wall thicknes from 2 to 3mm the 100 changes to the 80 variant automaticly, or asks me which version I want.
It would be handy to avoid mistakes with non excisting combinations of profiles.
Is there a custom app for Inventor that allows you to manage parameters easier? (Grouping wise to keep a better overvieuw.)
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?
I'm having some difficulties with iLogic and reference parameters.
I have made a tube with a weird shape and I want to measure the longest length. So I have to cut the tube in a certain angle in relation with the center to measure the length.
The problem is that this angle is really hard to calculate.
So I tried making a rule where I can make my angle shift x degree and then measure the longest length. If the measurement is larger the previous measurement the angle will shift x degree again until the measurement is smaller than the previous.
So I made my starting angle 0 degree, I know this is for a fact not the longest length. And then I tried this rule. (before making a While rule).
And I noticed that on screen the measurement changes. But the reference - parameter stays the same. So it gives me the measurement on the starting angle & after rotating it again gives me the starting angle.
How can I get the parameter to update itself in between?
Dim measurement_length As DoubleDim measurement_length2 As DoubleMessageBox.Show("Start angle ", "My iLogic Dialog", MessageBoxButtons.OK, MessageBoxIcon.Asterisk, MessageBoxDefaultButton.Button1)angle_measurement_spec = 0RuleParametersOutput()InventorVb.DocumentUpdate()measurement_length = [code].....
I have lots of files that are linked either by length, height, etc.. Is there an option to delete all linked parameters. I would also like to keep the part history (cuts and extrudes).
I wonder if there is an option to delete all at once like iLogic option-"delete all rules" or should be deleted individually.
I am using Inventor 2009 SP2, OS is XP Professional 2002 SP3.
I copy a file which has lot of parameters, I want to delete some of them, but Inventor Parameters pop up window just has buttom to add a user Parameter, without button to erase one.
Autodesk Inventor Professional 2013 (64 Bit) SP2 Windows 7 Professional Service Pack 1 Intel(R) Xeon(R) CPU E5645 12.0 GB Memory
I am creating a weldment that is controlled using parameters that are linked to an Excel spreadsheet (using Inventor 2012). One of my parameters is the size of the weld bead. I am able to add the parameter to change the visible size of th fillet and groove welds but am unable to have the weld symbols update to show the parameter value. How to add the parameter to the weld symbols? Or is this not possible?
I need to copy about 15 user parameters from 1 part to about 300 others. I used the DA to copy the iproperties but the user parameters are also needed.
Is there any way of exporting text parameters from an assembly to individual parts without using i Logic? I am also unable to import text parameters to a . I am from an excel file.
We are currently using ilogic to change part text parameters from the assembly but it is a sticking plaster at best, as the rules need to be rewritten when parts are added and deleted from the assembly. We are trying to update our etched job number (which in many cases contains letters) from a single point on the assembly model which should populate all part files, and make it robust for all our CAD users, who do not use iLogic in their day to day duties.
If this is not possible (exporting text parameters the same way numerical parameters are handled) is there any plans of getting this included in upcoming versions?
I created an assembly, so far with one part in it. I created an Excel spreadsheet with several dimensions in it that would be used in the assembly parts. I went to Manage>Parameters and linked the spreadsheet. The Excel file appeared in the Parameter Dialog Box with the parameters included in it. However, when I create a part in the assembly and attempt to dimension a sketch in it, the parameters option in the dimension box is not present.
I have done this in the past in IV2009, has anything changed that I cannot do so in 2010?
As my Inventor endeavors continue, I would like to take a template of a part I made and use Excel to change the parts dimensions. Essentially make it so if we need a 20 Tonne Lift Lug, I just punch in the necessary values in Excel and have the part update.
I need a parameter from an iPart to show up in my Parts List by using the Stock Number iProperty, then CHANGE with each variation of the iPart (PLATE BC-01, PLATE BC-02, PLATE BC-03, etc). I already have the parameter exported, named 'BOTTOM_A.' Stock number has the expression: '=1/4" HRS x <BOTTOM_A>.'
However, this only works for that particular part. The number does not change when I place a Parts List for PLATE BC-02 and PLATE BC-03. All three have the same number. I found that the number corresponds to the active part. If I double-click PLATE BC-02 in the ipt file to show it, the number for the separate Parts Lists will all correspond to PLATE BC-02.
I've attached an image of the Parts Lists after double-clicking PLATE BC-02 in PLATE BC.ipt. I can include more if needed.
