Inventor General Discussion

Inventor General Discussion

Reply
Contributor
satbir.sohal
Posts: 15
Registered: ‎08-14-2012
Message 1 of 16 (509 Views)
Accepted Solution

DXF

509 Views, 15 Replies
09-20-2012 03:51 AM

Hello,

    I made a cylinder which is in the attachment. When I flat pattern produce its dxf file, I am not able to get correct geometries. When I zoom into the dxf file, I see that the inner hexagon and circles project irregular shapes and are not concentric. 

Gday.

 

Attached is a zip file of a dataset I created. Have a look at TEST_PART_SOLID.ipt first to see how I created the negative of the shape I wanted (you could use a positive also-depends on your needs). Then look at TEST_PART.ipt to see how I used the DERIVE and then THICKEN tools to create the sheetmetal part. You will need to review the earlier video about derive and thicken. I don't know why you are having trouble. I see that the Cut1 produced dodgy flat pattern results. This is why you should either

  1. Create a solid template (solid could be extruded surface or solid) or
  2. Use Flat Pattern tools.

Best of luck.

*Expert Elite*
mrattray
Posts: 2,538
Registered: ‎09-13-2011
Message 2 of 16 (498 Views)

Re: DXF

09-20-2012 05:25 AM in reply to: satbir.sohal

The flat patern is corect, it's your folded model that's wrong. The way you cut those, well, cuts, is not perpendicular to the face. I suggest you remodel this using a contou flange, then the unfold feature. Make all of your cuts after the unfold feature, then follow it up with a refold. This will cause the edges of the cuts to stay perpendicula to the material and allow the expected flat pattern to be created.

Mike (not Matt) Rattray

Contributor
satbir.sohal
Posts: 15
Registered: ‎08-14-2012
Message 3 of 16 (493 Views)

Re: DXF

09-20-2012 05:43 AM in reply to: mrattray

Thank you for the reply. I tried that before, but its a lengthy procedure and I had to manually calculate the circumference and pitch and then convert them into rectangular pattern. Is there no alternative option where I can get these done quickly ?

*Expert Elite*
mrattray
Posts: 2,538
Registered: ‎09-13-2011
Message 4 of 16 (487 Views)

Re: DXF

09-20-2012 05:46 AM in reply to: satbir.sohal

You could just enter a formula intot the rectangular pattern spacing instead of hand calculating it. This way it will be linked to the radius of the cylinder.

Mike (not Matt) Rattray

*Pro
jletcher
Posts: 1,983
Registered: ‎05-18-2011
Message 5 of 16 (484 Views)

Re: DXF

09-20-2012 05:52 AM in reply to: satbir.sohal

Can you post a pic of the part I cannot open your part I will not install 2013 again.


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

James Letcher
2012 Factory Design Suite ( will not load 2013)
What happen to my Inventor :-(
*Expert Elite*
mrattray
Posts: 2,538
Registered: ‎09-13-2011
Message 6 of 16 (482 Views)

Re: DXF

09-20-2012 05:56 AM in reply to: jletcher

Capture.JPGCapture2.JPG

Mike (not Matt) Rattray

Contributor
satbir.sohal
Posts: 15
Registered: ‎08-14-2012
Message 7 of 16 (443 Views)

Re: DXF

09-26-2012 03:08 AM in reply to: mrattray

Hello,

    Can you please make a similar cylinder using contour flange and send me the ipt file. as I am unable to get it.

 

Thanks

Active Member
BLHDrafting
Posts: 10
Registered: ‎09-26-2012
Message 8 of 16 (422 Views)

Re: DXF

09-26-2012 09:27 PM in reply to: satbir.sohal

Another option I regularily use is to create a solid of what I want (including the angled cut and the holes/projections) and use the Derive the Thicken method from the sheet metal file. Works great and gets all of the cuts perpendicular with the sheet metal face.

Brendan Henderson
CAD Manager/Owner

BLH Drafting Services
Web www.blh.com.au
Twitter @BLHDrafting

Inventor 2012 PDS Premium SP 2 and Vault 2012 Update 1

Please mark as Accepted As Solution or give Kudos.
Mentor
CAD-One
Posts: 765
Registered: ‎10-26-2008
Message 9 of 16 (406 Views)

Re: DXF

09-27-2012 04:24 AM in reply to: satbir.sohal
BLHDrafting- Sounds interesting. Can you eloborate " derive the thicken method"
C1
Inventor Professional 2015
Vault Professional 2015
Active Member
BLHDrafting
Posts: 10
Registered: ‎09-26-2012
Message 10 of 16 (365 Views)

Re: DXF

09-30-2012 04:46 PM in reply to: satbir.sohal

No problems.

 

Here is a link to a short video of using the Derive and Thicken method. You basically make a positive (or negative) and import this shape as surfaces, then thicken the surfaces you want. Any protrusions you have in the solid can also be included in this method. Good luck.

 

http://screencast.com/t/VLBL762Cnck

Brendan Henderson
CAD Manager/Owner

BLH Drafting Services
Web www.blh.com.au
Twitter @BLHDrafting

Inventor 2012 PDS Premium SP 2 and Vault 2012 Update 1

Please mark as Accepted As Solution or give Kudos.
Post to the Community

Have questions about Autodesk products? Ask the community.

New Post
Announcements
Do you have 60 seconds to spare? The Autodesk Community Team is revamping our site ranking system and we want your feedback! Please click here to launch the 5 question survey. As always your input is greatly appreciated.