Dimensioning to holes in flat pattern
Dimensioning to holes in flat pattern
(OP)
I've created a cylinder that is going to be made from plate and rolled which has pipes running into it and I need to dimension to the holes in the flat pattern view but I can't dimension to the holes in the flat pattern. Any ideas??






RE: Dimensioning to holes in flat pattern
Jeff Mirisola, CSWP
Certified DriveWorks AE
http://designsmarter.typepad.com/jeffs_blog
Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M
RE: Dimensioning to holes in flat pattern
thread559-192763: Rolled Sheetmetal Part w/Holes
Eric
RE: Dimensioning to holes in flat pattern
We make ASME code vessels here so I put the nozzles in the piece while it's formed. From reading the other thread it doesn't look as though there is really an easy solution to this. Am I correct in assuming this.
RE: Dimensioning to holes in flat pattern
Regards,
Scott Baugh, CSWP![[pc2] pc2](https://www.tipmaster.com/images/pc2.gif)
FAQ731-376: Eng-Tips.com Forum Policieswww.scottjbaugh.com
RE: Dimensioning to holes in flat pattern
RE: Dimensioning to holes in flat pattern
Regards,
Scott Baugh, CSWP![[pc2] pc2](https://www.tipmaster.com/images/pc2.gif)
FAQ731-376: Eng-Tips.com Forum Policieswww.scottjbaugh.com
RE: Dimensioning to holes in flat pattern
I don't want to have to unfold the part and then add my nozzles in the flattened state. Am I looking at this incorrectly?
RE: Dimensioning to holes in flat pattern
To find the major and minor axis points of the 'ellipse', draw a horizontal and vertical line close to the outline and create a tangent constraint. Then place sketch-points at the tangent intersection.
RE: Dimensioning to holes in flat pattern
•create the cylinder
•unfold it.
•put in your holes.
•fold it.
At no point should you 'Flatten' it.
Jeff Mirisola, CSWP
Certified DriveWorks AE
http://designsmarter.typepad.com/jeffs_blog
Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M
RE: Dimensioning to holes in flat pattern
RE: Dimensioning to holes in flat pattern
This step is very time consuming and I'm trying to take this step out of the fabricators hands and put the holes for the nozzles in the formed state. I need the dimensions for our QC department so they check the location of the holes.
Essentially what I'm trying to accomplish is to speed up our fabrication process. Any step that I eliminate in the office speeds up the fabricators job and makes it easier for them. I'm okay with the holes be ellipses I expect I just want to be able to put dimensions to the holes for our QC department.
I hope this makes sense of what I'm trying to do. Is this the correct way?
RE: Dimensioning to holes in flat pattern
Jeff Mirisola, CSWP
Certified DriveWorks AE
http://designsmarter.typepad.com/jeffs_blog
Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M
RE: Dimensioning to holes in flat pattern
RE: Dimensioning to holes in flat pattern
RE: Dimensioning to holes in flat pattern
If you really want to place the hole in the formed state, then see my first post.
RE: Dimensioning to holes in flat pattern
Jeff Mowry
www.industrialdesignhaus.com
What did you dream? It's all right--we told you what to dream.
--Pink Floyd, Welcome to the Machine
RE: Dimensioning to holes in flat pattern
RE: Dimensioning to holes in flat pattern
The way I'd do it is add the sheetmetal feature after my holes are already formed. Roll back to a flattened state and create a sketch on the flat metal. You can create construction lines that are tangent to the edges of each holes--like a box around each hole--four construction lines. Create a vertical and horizontal construction line set to the midpoints of a vertical and horizontal box line. Where they intersect is your hole center. Create your circle/ellipse from that center point. Make sure your new holes actually cut some material, so that they're a bit larger than the original holes made during forming.
Later (I think) you should be able to dimension to your new holes in the flat pattern (in a drawing view).
Jeff Mowry
www.industrialdesignhaus.com
What did you dream? It's all right--we told you what to dream.
--Pink Floyd, Welcome to the Machine
RE: Dimensioning to holes in flat pattern
Or you could place them in the actual 2D drawing view of the Flattened part.
RE: Dimensioning to holes in flat pattern
Now will this point show up on the flat pattern in the drawing?
RE: Dimensioning to holes in flat pattern
Jeff Mowry
www.industrialdesignhaus.com
What did you dream? It's all right--we told you what to dream.
--Pink Floyd, Welcome to the Machine
RE: Dimensioning to holes in flat pattern