AutoCAD Inventor :: Finding Perimeter Length Of Sheet Metal Flat Pattern Including Cutouts
Feb 6, 2013
I'm trying to write a VB.Net program (Visual Studio 2010 Express) for Inventor 2012 that will add up the length of all the edges of a flat pattern including any cutouts/holes in the part. I need the total length to do an estimate on the amount of time required to cut out the pattern on a laser. How to get this info programatically in VB?
i7-2720QM Dell Precision M6600, Win 7 Pro 64-bit, 8GB RAM
Autodesk Product Design Suite Ultimate 2013
Autodesk Vault Professional 2013
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Apr 30, 2013
After having a formed sheet metal part finish the wrong size (.100" long on all sides), I discovered a glitch with the sheet metal flat patterns sizes being.
I created two identical parts, one in IV2013 and one in IVP2014, and came up with two different flat patterns. The two parts are 100% identical. The volume is identical for both, and I did an assembly overlay to double check (everything lined up perfect). However, the flat pattern on the IV2014 part was 0.130" shy of what it should be (total length in both directions).
I haven't been able to recreate this (happened with this part and with a different part that we had formed), but you shouldn't ever have to worry about something like this. I created the same part in 2014 for a second time from scratch and it then came out to the correct dimensions, which worries me even more that this is an intermittent problem.
The JUNK file is the one with the incorrect length.
Also, another IVP2014 issue I have been having is when saving a drawing as an AutoCAD drawing it saves it as a 2013 AutoCAD in a zip file instead of a 2007 as a normal file like I have it set up to. If I click "Options" when saving, then click cancel without selecting anything, it saves it correctly.
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Jan 16, 2013
I have attached a small Sheetmetal I-Part that is fairly representative of a lot of the work we wish to accomplish using Inventor. Stepping through the table and activating each row therein changes the model smoothly and there are no errors. But as soon as I create a flat pattern for ANY of the rows, I get the error message shown in the first of the attached JPEG images. When I choose Accept, Inventor creates the Flat Pattern, but there are no errors that I can discover (see 2nd JPEG), not even when I expand all the children.
Now that a Flat Pattern exists, activating other rows of the Table result in the error message each time. Delete the Flat Pattern and stepping through the Table returns no errors at all. The folded part is robust and the flat patterns have no interferences or obvious errors.
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Jun 24, 2013
Switched to the flat pattern of my sheetmetal part and created a sketch.
My intention is/was to control the values of the sketch parameter values using ilogic.
I cannot access these parameters through the ilogic parameter interface or the ilogic rule editor.
I am using ilogic with Inventor 2009 / Inventor 2010 Certified Professional
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Apr 7, 2012
How to predict possible interference by planning a piece modeled in sheet metal. eliminate these interferences future?
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Dec 30, 2013
I'm having trouble creating a flat pattern from a solid i've modelled.
Workflow: Created a 2D sketch in xy plane and extruded -1084 mm in z dir. Created cut, and extruded slots which were then patterned with rectangular pattern.
Converted to sheet metal, and then tried to flat pattern.
Tried to remove all features exept the 1st extrude, still having the same problem.
I have tried to set the correct material and sheet metal defaults, but still no luck.
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Jun 9, 2012
How to get the flat pattern of a sheet metal model as a drawing view in .idw environment?
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Dec 19, 2013
Using a sketch, i've made a sheet metal face with a 1/4" thickness.
When i select "create flat pattern", inventor only uses a very small portion of the part, and the rest disappears.
Inventor doesn't prompt any windows or generate an error message of any kind. How can i include everything in my flat pattern?
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Jul 16, 2013
I am trying to design a welded Iron tank whose caps are made of sections, then welded together. I made one section using Contour Roll on Sheet Metal, and worked fine, but when I made the Flat Pattern it mades a square.
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Mar 15, 2012
Why is it, when I go to Flat Pattern/export to DXF that everything ends up upside down.I have part where it is important that the correct side is faced upp, (brusched steel).
When i Export it to dxf, it is upside down, and the bruched facefacing down.
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Dec 19, 2011
I have a sheet metal part that is not showing a flat pattern button in the ribbon (two parts actually). Please see the picture attached. The workflow for this part is as follows:
1.) Create a master/skeleton sketch of my floor plate layouts for a platform I am currently doing
2.) Derive that sketch into each floor plate part
3.) Extrude the layout sketch
4.) Convert the standard ipart to a sheet metal part
5.) Set my sheet metal rule to match the thickness
6.) Add a flange to represent a stair nosing
7.) Look to my Ribbon to create a flat pattern and....
As a test, I created a new standard ipart (no derived sketch) and converted it to a sheet metal part, added a flange, and still no flat pattern button.
This can't possibly be by design, so what am I missing?
Inventor Professional 2013 (SP-2.3), Product Design Suite Ultimate
Desktop: Intel Core i7 3.4GHz, 16.0 GB RAM, Windows 7 Ultimate SP-1, 64-bit OS, (2) GeForce GTX 580 (331.81), Space Pilot Pro (3.16.1)
Laptop: Intel Core i7 3.9GHz, 16.0 GB RAM, Windows 7 Pro SP-1, 64-bit OS, GeForce GTX 780 (331.81), SpaceNavigator (3.17.7)
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Oct 16, 2012
I have a simple sheet metal part that does not require explicit bend radii. We leave it up to the shop to fab this part up as long as it's final outcome is within tolerance. We don't normally include a flat pattern, simply because it could cause confusion when cutting a blank. I use the default bend allowance and bend radius, which gives the exact blank size and bend locations. But our local fab shop probably doesn't/won't use the correct tooling to provide the exact bend radius, so this will throw off the final outcome if the blank was cut using the flat pattern dimensions.
I can apply the flat pattern to my drawings, because there is some sheet metal components we have that require the flat pattern to show cut profile features.
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Jul 19, 2012
I have to create a conus from a 2mm thick RVS plate, I know how to construct this in Inventor. But how can I create the flat pattern of this form?
Inventor 2013
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Nov 8, 2012
I Am trying to make a flat of this attached part. The dimensions are correct for the part but I am trying to make it such a way that I can form it using a die with a press break. I tried many different ways but inventor doesn't seem to allow me to create a lofted flance using a 3-D profile sketch. How to get this part modeled as a sheet metal and have a right flat pattern?
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Mar 8, 2012
I do not use the sheet metal tools in IV all that often so I fully expect that I have done something completely wrong.
I have a sheet metal part that in the folded part view looks like this:
In flat pattern view (and any subsequent flat pattern drawing) it looks like this:
Inventor Professional 2013 (SP-2.3), Product Design Suite Ultimate
Desktop: Intel Core i7 3.4GHz, 16.0 GB RAM, Windows 7 Ultimate SP-1, 64-bit OS, (2) GeForce GTX 580 (331.81), Space Pilot Pro (3.16.1)
Laptop: Intel Core i7 3.9GHz, 16.0 GB RAM, Windows 7 Pro SP-1, 64-bit OS, GeForce GTX 780 (331.81), SpaceNavigator (3.17.7)
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Jan 23, 2012
I am working on a new iLogic rule that will create and IDW with automate views of the folded model of the sheet metal part in front view, right view, top view and the flat pattern I have success with all views except the flat pattern view creation codes. Does anyoone have knowledge of what the code terminology is to add a flat pattern view through ilogic to an idw?
Also, if this is possible, I want to create a bend table and a hole table using ilogic to automate these processes.
So far, I can create any view off the folded model but I do not know the code to create a flat pattern view.
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Feb 21, 2012
I'm drawing a sheet metal part with several flanges and corner seam, but when I try to generate its flat pattern, the part is not competely unfolded, every corner with a seam is not flattened (while there is a clearance between the corner edges; i.e. no welding)
is there anyway to generate a complete flat pattern without removing the corner seams ??
(the flat pattern is attached where you can notice some flanges are flattened while others are not !)
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Jun 18, 2013
I want to create a flat pattern of a sheet metal-part that I've used in an assembly. In this assembly I've made cut-outs in some of the parts (see attached .png). Is it possible to get at flat pattern of the specific parts with the cutouts? I can e-mail a ZIP-file with the assembly (the file was too large too attach).
Running Inventor professional 2013
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May 2, 2013
I'm attempting to create a mini version of a product, I use the Derived Component button and scale the part down. Then I use Convert to Sheet Metal, set my sheet metal defaults, but then nothing happens when i try to create flat pattern. Is it even possible to derive a flat pattern from a scaled part?
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Nov 9, 2010
The company I work for has a large number of Left Hand and Right Hand sheet metal parts. To reduce the amount of time needed to create both Left Hand and Right Hand sheet metal parts, I use the Derived Part icon. I create a Left Hand part, use the derive icon with mirroring on and create the Right Hand part. While the Right Hand sheet metal part gets created, the Right Hand part will not allow me to create a Flat Pattern.
what steps must I follow to create a derived sheet metal part that I can make a Flat Pattern with?
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Sep 17, 2009
I created a sheet metal part with multi-edge flanges; the part unfolded no problem. Now, I need an exact, mirrored copy of that part [new part number]. My first attempt was a mirrored component at the assembly level. The part was mirrored but it would not unfold. My next attempt was a derived part with the mirrored option selected. This part, too, was mirrored but would not unfold either.
"In sheet metal parts, mirroring flanges or contour flanges created using multi-edge select is not supported." Is this why the flat pattern fails?
Is there a workaround? I'd hate to create the mirrored part from scratch when I all need is reverse bends.
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Sep 4, 2013
Where I work we do a lot of plate and punch holes in beams for rebar. Is there a way to pull the flat patteren layout of sheet metal and convert to an NC1 file. I can export to a DXF but then i must manually go in and make changes to the DXF in order for it to cut right on our plasma and laser tables. As far as punching holes and cutting beams any clues on this either? We were outsourcing our drafting work before but now we are switching over to in house. I have contacted our supplier of plate nesting software and it looks like they sell something but that means another license of it on another computer.
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Aug 2, 2012
Let's say that I'm making a simple L bracket. I'm going to form it, and machine the holes in both ends *after* forming. So I don't want the holes to show in my flat pattern.
On the few threads I found, the consensus seemed to be that you may have to have the part file contain no holes and put them in as assembly. So I just accepted this that it must not be able to be done.
Then I ran across a piece of promo literature online from AutoDesk that made mention of the ability to create "postform" features that obviously are created after the forming process.
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Apr 17, 2012
I am trying to program the view placement of various parts and have run into a situation where I need to place flat patterns. On the programming side there isn't an issue, but the issue occurs when attempting to select the wanted view orientattion.
Attached you will find 2 screen shots. One of them is from the "Folded Model" (Take note of the View Cube)
The other is from only Pressing the "Go to Flat Pattern" Button and being in "Flat Pattern" viewing mode (Note the Cube)
I need the Flat Pattern View to correspond with the Orientation of the Folded Model.
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Sep 12, 2013
A collegue asked me about this as he has been given a part to model and the details are for the flat sheet not the finished model. Is this possible in 'sheet metal'? I had a quick play but couldn't work it out. Im used to creating the finished part and 'un-folding' to get the flat pattern.Detail supplied below.
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Dec 6, 2010
Is there a way for forcing a flat pattern, when unfolded, to a specific length?
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Nov 29, 2011
I am creating a program to write out all the flat patterns of all sheet metal parts in an assy. I save it out as dxf. What I need is to totals of all the sheet metal parts across all sub assy’s etc in other words not “Structured” but “Parts Only” in Inventor BOM terms. All works fine but the only problem is that when a sub assy is a weldment or “inseparable”, it hides the parts inside it and “Parts only” BOM don’t make the internal parts of that sub available and the totals are not correct then. I need the totals because the idea is to write that into the file name including the thickness of the part.
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Jan 10, 2014
IS there a way to use the flat model of a sheet metal part?
I want to save only the flat model from the IPT file and use it to build a die.
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Jan 28, 2013
Part of my job is to lay out blanks of 3D models so the blank can be sent out and cut. Is there a way to convert an Inventor ipt file to a flat blank? I have tried "convert to Sheet Metal" but Inventor reads the pre-bent part as the flat layout. I am currently using Inventor 2013. i attached a drawing for an example.
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Nov 13, 2013
I have an issue with flat layouts, when a draw a round object such as a rolled punched plate it would be nice to have the flat layout show what the hole callout and spacing would be, however with the way i draw the model. the holes come out as an ellipse, attached is a document showing how i drew the model.
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Aug 22, 2013
I have a sheet metal IPT that I saved, then did a saveas and saved as a different file name. I then took the part in the new IPT and did a mirror on the part. I chose the second "Mirror a Solid" option in the mirror dialog box, and clicked "Remove Original". Now that I'm at this part, when I try to make a flat patten of the new mirrored part, all I get are the bend and center lines of the part, not the internal and external lines that I can export for use in water/laser cutting.
I was wondering if I was doing something wrong in order to make this work. In looking through the forums I have seen people say not to use the mirror command in an assembly and create a derived part because that has issues, but I did this in an IPT, not an IAM. I have also read to make sure that the Sheet Metal Defaults are set the same, but I believe that they are talking about the derived part from an IAM drawing. All the same, I have checked my Sheet Metal Defaults and they are all the same, and in fact I tried updating them to see if it would still change the part, and it did. I was able to make my part other thicknesses and it updates the part as per the norm.
I am using Inventor 2013 Professional, if it matters at all. I have also attached a couple of picture files showing the part folded and how it looks to me when I go to the flat pattern.
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