AutoCAD Inventor :: Equation For Rectangular Pattern
Feb 22, 2012
Can an equation be used to calculate equal distances when using the rectangular pattern.Regarding the attached .ipt file i would like to place 25 holes in the X direction with equal gap size between each hole.Also how to calculate the number of holes in the Y direction again with equal distance between each hole.I have not done this before with equations but was thinking that i would need to use the Length x Width in the equation.Do i need to add figures into the Parameters box also?
The attached file with the Hole feature the sketch is not constrained for the purpose of using an equation so i know how far from the start of the part to get equal distances between each hole to the end of the part .
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Mar 27, 2012
How can I make a circular pattern of a single occurence of a rectangular pattern?
A shaft has a rectangular pattern of holes (along its axis) on its surface. I want to pattern the 4th occurence of this hole pattern as a circular pattern? Can I do it in Autodesk. I can not select the a specific occurance of a patterned feature to pattern it again.
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Jul 25, 2012
As you see in the template photo (the photo was scanned by Microsoft Security Essentials, healthy) I wanted to extrude my circle, and I made 28 pieces with circular pattern feature; now, do I have to choose all the pieces by one by to be able to choose all?
The sum of the problem: while using the Circular Pattern feature or rectangular pattern feature in Inventor, sometimes I want to extrude (join) or cut the drawings that I made (augmented) with using circular pattern feature, rectangular pattern feature. in this case do I have to choose all the augmented members one by one (for instance I make 42 augmented members), it can take a lot of time.?
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Feb 20, 2012
I am using Inventor 2012. I have a horizontal feature that terminates at a vertical plane on one end and an angled plane at the other end. I want to pattern it down but when I use Adjust, the patterned features do not adjust to the angled plane. They just go strait down from the first feature.
Does Adjust only work if the terminator is a solid surface instead of a plane?
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Nov 3, 2011
I am having a problem with an iPart. I created a rectangular patern in an iPart. When I place the member of the iPart in the Assembly file the pattern is not there. I need it to constrain another part to it.
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May 14, 2013
I am currently trying to model a multi cavity mould tool. The cavities themselves do not follow either a circular or rectangular pattern.I have modelled one of the cavities using a revolve internal to the tool. I have also sketched out on the upper surface centre points where I need the cavities to be.
I was hoping I would be able to copy the cavity feature, select a base point and then use the centres from my second sketch to place the cavities.
I don't seem to be able to find this option. The copy and paste feature will likely work but it is hugely long winded positioning each cavity individually. Any method I might be able to use to model such a part?
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Dec 1, 2009
Looking for some sample code for patterning a hole in a part using Inventor 2010. I dont need it to be selected because it is the only hole i have in the part. My main trouble is that I am having trouble withobjectcollection idea. As you can guess I am a newbie at Inventors API.
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Nov 19, 2012
I need to know what sketch is associated to either a "Rectangular"or "Circular"array. This is so I can filter out sketches that are not repeated in an array.
Here is my code so far (Circular Array).
Dim oCP As CircularPatternFeature
For Each oCP In oDef.Features.CircularPatternFeatures
THIS IS THE TROUBLE LINE If sketch = oCP.Parent Then
Set oCP = oDef.Features.CircularPatternFeatures.Item(oCP.Name)
[code]........
I have a simple test part containing an extruded disk (Sketch1) and 8 holes on a pcd (Sketch2). I only want to array a sketch if it is arrayed.
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Jan 9, 2012
I can not use rectangular pattern for bolt in an assembly.
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Mar 21, 2013
I'd like to make a rectangluar pattern of a part that is groove welded into a plate. Inside the pattern command I can select the part but not the weld. How to avoid having to do each weld individually?
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Aug 29, 2013
If I have a RectangularPattern how do I suppress individual features in the pattern.
For example I have a single row of holes, and I want to suppress the odd numbered holes.
I've tried this...
CComPtr<FeaturePatternElements> pFeaturePatternElements ;
pRectPatFeat->get_PatternElements (&pFeaturePatternElements) ;
const int ikNumElements = pFeaturePatternElements->GetCount() ;
wprintf (L" this has %d FeaturePatternElements
[Code]....
... but it crashes at the assignment of Suppressed
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Jul 23, 2012
While using the Circular Pattern feature or rectangular pattern feature in Inventor, sometimes I want to extrude (join) or cut the drawings that I made (augmented) with using circular pattern feature, rectangular pattern feature. in this case do I have to choose all the augmented members one by one (for instance I make 42 augmented members), it can take a lot of time. also after applied any of these features I can't use trim feature, can I ? but sometimes using the trim feature after applying the Circular Pattern feature or rectangular pattern can be necessary.
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Sep 11, 2003
The problem: I want a circular pattern for rectangular shaped holes, and I don't want the holes to rotate. The circular pattern doesn't have an option to retain the orientation.
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Sep 19, 2013
I would like to use a sketch as the basis for a rectangular pattern which is set up to use the curve length for both directions of the rectangular pattern so that when I update my rectangle in a sketch, the pattern automatically adjusts to the new sketch. I have sketched a rectangle, and used one leg of the rectangle to establish the direction and length of one dimension of the array.
However, when I try and choose the Direction 2, my only options are the entire rectangle or faces- I can no longer select other and choose a single side of the rectangle.
I was able to accomplish what I wanted by using two sketches, with the second sketch simply projecting one leg from the first sketch. Using one sketch just seems inherently safer than trusting projected geometry.Is there a way to accomplish this with one sketch instead?
Inventor 2013 (SP2 Update 2), Windows 7 Professional (64-bit), SP1, Intel Xeon 3.07GHz CPU, 12GB RAM, NVIDIA Quadro 2000, Vault Basic 2013
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Oct 18, 2011
Is there a way to create an upwards circular pattern, or a rectangular pattern with a circular movement?I'm trying to create a DNA-structure
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Sep 10, 2012
Any work around for rectangular patterns in assemblies?
I want to pattern a screw using an existing Part Feature Pattern; I have figured out depending on how the part is assembled you get two outcomes and if the part is mated opposite side to how the feature was patterned you get the parts going the wrong way (see attached pic).
Is there a “flip direction” option anywhere or do you just have to be super diligent on how the seed feature orientation is in relation to the assembled pattern?
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Oct 3, 2012
We are using Inventor 2011 and I would like to make a small app that allows my users to graphically select one or more occurrences of a rectangular pattern feature Then allow them to suppress them if desired.
I have determined the code to loop through the pattern occurrences and toggle suppression for any instance. What I do not know how to do is determine which occurrences have been graphically selected.
At this time I am only concerned with round hole features. (Perforated metal)
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Feb 28, 2013
I am in the process of translating existing VBA code into its equivalent in VB.NET (developing VS Professional 2010 and testing in AutoCAD 2010)
My problem is that I have never done hatching in VB.NET before, and now I am required to hatch a rectangular area (defined by lines) within an AutoCAD block. How to go about accomplishing this task.
To create my block, I am using a DBObjectCollection to store my lines, and then append them to the block definition, creating a reference to see what I just created.
If I were to define a rectangular outline within this block, how can I possibly hatch it?
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Mar 17, 2013
I'm just starting out with learning equation curves in Inventor.How can I get this curve
r(t)= ti + 4cos tj +9sin tk; where t is greater than or equal to 0
how to get this VBA as an equation curve
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Nov 26, 2013
I need to make a model of saddle surface. The surface is given by equation z = y^2 - x^2, and I must have some thickness - It will be printed on 3D printer.
I have Inventor 2014 and I dont see possibility of making the surface directly in Inventor. Is there any trick for that?
I'm afraid I cannot use solution as stated here Equation-driven surface , because saddle surface looks like this hyperbolic paraboloid .
I tried this solution: I made 3D surface in Matlab, exported it in .stl and opened in Inventor - but this only makes the surface with no thickness. Functions extrude, loft require 2D sketch.
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Mar 7, 2012
I need to put the following into equation form to plug into a User Parameter:
if d91 falls in the range of 4" to 11"
then d92 = d91 + 2"
else d92 = 7.5"
Windows 7 Pro, SP1
Inventor 2012 SP1
Due to the nature of our business, I am not permitted to attach any files showing models or .idw environments of any actual work-related components.
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Sep 23, 2013
how can i access the value in this column using vba?
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Sep 24, 2012
I need to put in the polar equation r=e^theta. Is this even possible in autodesk? How can I do it? Should I spline through points instead?
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Jan 16, 2012
We have some equations in our templates which i have modified with iLogic. Once the rule is run it only shows the value and not the equation. ie i want it to show Thickness*2 instead of just '12'. The ilogic will say something like InnerRad = Thickness * 2 Is there a way to make it show the equation rather than the value? While i know whats going and can see the driven link in the parameters the planned change to 2012 could take some getting used to for users.
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Mar 23, 2012
I was trying to use ipart to create some parts and place the relevant dimensions in the table format in the idw file. However, the equation for the dimensions appeared and I like to have it as numeric. Also, the feature present or absent is preferred to be called "Yes" and "No" instead of "Computed" and "Suppress" respectively.
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Nov 2, 2011
I have an asssembly stack and I have a known bending moment at a given place (ie the datum). I want then to create a drawing of this stack up and show the bending moments at known locations beside the relative dimension.
Now I can do this manually no problem...but I would like this drawing to update automatically. ie the stack up height(s) change and i want the bending moment figure to update accordingly.l
Is there a way to do this with drawing dimensions? ie dimensions created in drawing mode?
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Dec 11, 2012
I'm trying to use the equation curve to draw a super ellipse.The formula I'm trying to translate for inventor is the following.I'm guessing this should be possible using the abs() for the first section and an IF() statement for the second. The problem is Iäm not even getting the abs() to work at all. How to translate this formula?
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May 10, 2012
Trying to do something as simple as y=x^3 (Explicit Mode). Set xmin = 10, xmax = 20 then tried y(x) = :
1in *(x^3) -- no good
(x^3)/1 in -- no good
(x/1 in)^3 -- no good
Error is that "Equation y(x) contains errors. Expected units are length".
The point here is: Why should typing in such a simple equation as y=x^3 be so difficult??? Can't even do (x*x*x)/1 in & make it work.
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Feb 15, 2013
Can i make an Equation Curve such that it is dependent on a parameter from my Parameters list?
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Oct 14, 2011
I have a small assembly with the parts. I'm doing an array (pattern) of one of the parts and I tried to do two things without success:
1. Tried to link one of the parts to the assembly itself with the equation tool ,but the software doesn't let me do it and says "...was rejected since it causes a cyclic dependency" - so what?:-) I know and need to do it!
2. After rejected the first choice, I tried to "project geometry" some stuff of the pattern I created in order to try and and make my connection in this way, but then I got a similar rejection: : problem encountered when doing cross part projection"...probably it's because it's from a pattern I'm creating from the part I'm doing this sketch inside?
What Can I do in order to bypass these remarks and make it somehow? Most important, Why can't one "tie" something from a part to its own assembly in which it's located???
Inventor 2012 Pro.
I7 workstation
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Nov 26, 2012
Is there any way in which the text of a text parameter, which is in the equation column, can be replicated into the nominal value column in the parameters table? I want to reference the value of the parameter in Custom iProperties but it always comes up as blank because it has no value.
I need it to update automatically, e.g not entering the value manually.
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