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rsgallo
Posts: 4
Registered: ‎09-04-2007
Message 1 of 9 (292 Views)
Accepted Solution

Multiple rip and missing sections

292 Views, 8 Replies
07-17-2011 11:42 AM

I am new to Inventor.  I am trying to flatten a shell. It is pressure vessel component. I can rip it and unfold just fine, but the final part, when built, is too big to mfg in one piece. I noted that multiple rips are supported and I can do two rips fine. I basically have a top half and bottom half. But when I flatten it, one half is missing. I stumbled upon "unfold". I can do that to both halves and have them as flat plates seperated in space in one .ipt. . If I try to create 2D drawings, one half is missing. I can't find it to create projections in a dwg.  I've assumed this might work better if I created an assembly of the 2 halves, but haven't been able to erase half as ripped and save as(pt1, pt2), to create the two parts to the assy.  Any ideas?

It is true the drawing was cluttered with various trial and error.  I need to learn more about drawing constraints. 

 

I had some phone support due me on my upgrade purchase, so I called.  Nothing wrong with my file.  Yes, it is "spit" in the model space, not "rip" in sheetmetal.  After splitting, then one must "manage"> "make component".  The halves must be selected to show up in the Make Components window.  This is what I was missing. I saw none or one solid and had no idea what to do.  Thanks for your help.

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JDMather
Posts: 27,478
Registered: ‎04-20-2006
Message 2 of 9 (287 Views)

Re: Multiple rip and missing sections

07-17-2011 03:47 PM in reply to: rsgallo

I would do Derived Components to get the flats.

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Member
rsgallo
Posts: 4
Registered: ‎09-04-2007
Message 3 of 9 (284 Views)

Re: Multiple rip and missing sections

07-17-2011 07:43 PM in reply to: JDMather

I tried your suggestion.  It still treats the model as one part, even though it is ripped into two parts.  I could not derive one half from the other.  I've included the part file for perusal. Am I missing something?

Thanks,

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PaulMunford
Posts: 919
Registered: ‎11-13-2006
Message 4 of 9 (273 Views)

Re: Multiple rip and missing sections

07-18-2011 02:33 AM in reply to: rsgallo

JD is suggesting tha youuse your origional part as a master part, which will control two derived parts.

 

Create the split in your master part - being caerful to make sure that you chose the 'New Body' option.

 

Now use the make components tool to create two derived parts, each containing a reference to your origional master part.

 

Each of these parts should flattern sucessfully.

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rajeshindi
Posts: 141
Registered: ‎12-07-2009
Message 5 of 9 (266 Views)

Re: Multiple rip and missing sections

07-18-2011 03:29 AM in reply to: rsgallo

please refer to the attachment.

 

I have just followed the previous 2 peoples instructions.

Member
rsgallo
Posts: 4
Registered: ‎09-04-2007
Message 6 of 9 (237 Views)

Re: Multiple rip and missing sections

07-18-2011 03:03 PM in reply to: rajeshindi

I gather I should use "split" with the model, instead of "rip" as a sheet metal function.  I tried that, but when I attempt to derive parts, or make component,  there is still only one solid available and it is the total model.

 

rageshindi, I cannot open the file you sent back.  A dependent file is missing.

 

Thanks,

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JDMather
Posts: 27,478
Registered: ‎04-20-2006
Message 7 of 9 (235 Views)

Re: Multiple rip and missing sections

07-18-2011 03:44 PM in reply to: rsgallo

Nothing you have done makes sense to me?
I would start over using obvious symmetry about the origin
see http://home.pct.edu/~jmather/skillsusa%20university.pdf

your first sketch isn't constrained and it looks like you are doing too much work

(see attached)

 

This is a good example of why Inventor Fusion should never have seen the light of day.

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Member
rsgallo
Posts: 4
Registered: ‎09-04-2007
Message 8 of 9 (206 Views)

Re: Multiple rip and missing sections

07-20-2011 06:39 PM in reply to: JDMather

It is true the drawing was cluttered with various trial and error.  I need to learn more about drawing constraints. 

 

I had some phone support due me on my upgrade purchase, so I called.  Nothing wrong with my file.  Yes, it is "spit" in the model space, not "rip" in sheetmetal.  After splitting, then one must "manage"> "make component".  The halves must be selected to show up in the Make Components window.  This is what I was missing. I saw none or one solid and had no idea what to do.  Thanks for your help.

*Expert Elite*
JDMather
Posts: 27,478
Registered: ‎04-20-2006
Message 9 of 9 (198 Views)

Re: Multiple rip and missing sections

07-21-2011 12:51 AM in reply to: rsgallo

In addition to getting the sketches  constrained/dimensioned - also take a look at how the holes were placed in the inclined plane (check in derived flat pattern).  They are not perpendicular to the face as is.

Please mark this response as "Accept as Solution" if it answers your question.
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