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BLHDrafting
Posts: 350
Registered: ‎10-12-2012
Message 1 of 9 (367 Views)
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CAN'T FLAT PATTERN THIS PART

367 Views, 8 Replies
11-01-2012 02:35 PM

Looking for some help in getting this derived/thickened part to flat pattern. I suspect the problem is the cut in the plate edge as can be seen in the below image. Can't figure out how to get rid of it. Zipped files (solid and derived sheet metal part) attached with both parts EOP rolled up. Thanks.

Capture.JPG

Brendan Henderson

Web www.blh.com.au
Twitter @BLHDrafting

Windows 7 x64 -64 GB Ram, Intel Xeon E5-1620 @ 3.6 GHz
ATI FirePro V7800 2 GB, 180 GB SSD & 1 TB HDD, Inv R2013 PDS Premium SP2 Update 3 (Build 200), Vault 2013 Workgroup Update 2 (Build 17.2.9.0)
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JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 2 of 9 (354 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 03:23 PM in reply to: BLHDrafting

 

Couldn't the part be done with Lofted Flange?

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JDMather
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Message 3 of 9 (344 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 03:56 PM in reply to: JDMather

For your sketches this is the same thing you have but only 3 dimensions.    (equal =) constraints used for the three 650mm dimensions.

 

Of course my intention is to mirror about Workplane2.

No other construction geometry needed.

 

Same thing.PNG

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JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 4 of 9 (340 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 04:09 PM in reply to: JDMather

and Flat Pattern

(not sure why you were doing only half side)

 

Gore side.PNG

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Valued Mentor
BLHDrafting
Posts: 350
Registered: ‎10-12-2012
Message 5 of 9 (335 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 04:22 PM in reply to: JDMather

JD, probably. But I like the derive/thicken method because of the ground and root capability of the parts.

Brendan Henderson

Web www.blh.com.au
Twitter @BLHDrafting

Windows 7 x64 -64 GB Ram, Intel Xeon E5-1620 @ 3.6 GHz
ATI FirePro V7800 2 GB, 180 GB SSD & 1 TB HDD, Inv R2013 PDS Premium SP2 Update 3 (Build 200), Vault 2013 Workgroup Update 2 (Build 17.2.9.0)
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JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 6 of 9 (332 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 04:33 PM in reply to: BLHDrafting

Your dimensions confuse me (why are you going from a smaller gore to a larger gore and back again), but I think you will have no choice other than to use the sheet metal tools for this as the panels are twisted.

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Valued Mentor
BLHDrafting
Posts: 350
Registered: ‎10-12-2012
Message 7 of 9 (329 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 04:39 PM in reply to: JDMather

Thanks JD. I'll have a look at your modelling method. As usual you come up with a much easier method.

 

Doing only half the side due to need to press these parts. So I'll make a left and right part.

 

The part is for a silo fumigation system. Fan (aeration) system engineer is telling me they need more volume inside the 90 degree bends. I can't argue with him much as he is the expert in this regard. So I'm just trying to facilitate his needs.

Brendan Henderson

Web www.blh.com.au
Twitter @BLHDrafting

Windows 7 x64 -64 GB Ram, Intel Xeon E5-1620 @ 3.6 GHz
ATI FirePro V7800 2 GB, 180 GB SSD & 1 TB HDD, Inv R2013 PDS Premium SP2 Update 3 (Build 200), Vault 2013 Workgroup Update 2 (Build 17.2.9.0)
Valued Mentor
BLHDrafting
Posts: 350
Registered: ‎10-12-2012
Message 8 of 9 (321 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-01-2012 04:52 PM in reply to: JDMather

JD, if you have not yet deleted your part could you share it with me?

Brendan Henderson

Web www.blh.com.au
Twitter @BLHDrafting

Windows 7 x64 -64 GB Ram, Intel Xeon E5-1620 @ 3.6 GHz
ATI FirePro V7800 2 GB, 180 GB SSD & 1 TB HDD, Inv R2013 PDS Premium SP2 Update 3 (Build 200), Vault 2013 Workgroup Update 2 (Build 17.2.9.0)
*Expert Elite*
JDMather
Posts: 26,287
Registered: ‎04-20-2006
Message 9 of 9 (293 Views)

Re: CAN'T FLAT PATTERN THIS PART

11-02-2012 05:20 AM in reply to: BLHDrafting

BLHDrafting wrote:

JD, if you have not yet deleted your part could you share it with me?


You are using earlier release - so you wouldn't be able to open my flle.

I can walk you through the process.

First thing I did is create a line in space for the size of the base and then add coincident constraint between midpoint and origin.

Then I created the three 650mm lines.

 

Please mark this response as "Accept as Solution" if it answers your question.
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http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm

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