NC File - Wrong orientation of holes on folded plate

[allrand]

Hi,

I'm having problems with the output of NC files, especially with folded plates.

It seems like the plate dimensions and the hole block are using different coordinate system...

Here's an example, the DXF file is correct but the NC file has the plate turned sideways 90 degrees and the holes remain in the same position.

I get no errors or warning when I output the NC files and I can't seem to figure out what is going on.

Thanks for your help.

Correct DXF file :

NC output for the same part

[Sebastian_Eiche]

Which viewer do you use?
in general the NC file and DXF are based on the same rules by creating them in Advance Steel.
So maybe an issue of your viewer?

[allrand]

Up until recently I never really paid attention to the NC files for plates and small parts.

We really only used these outputs for drilling holes in beam.

Last week my fabricator updated their equipment and now use NC file instead of DXF for plate cutting.

It's him who pointed out the issues with hole position in bent plate.

I didn't have any viewer here to confirm the issue so I just googled around and installed these 2 free viewers : CMS Viewer and ProCAM Lite.

And sure enough I get the same result as my fabricator with holes rotated 90 degrees to the plate...

I thought the issue only occured with folded plate, but I just noticed the same thing with this gusset plate.

p1002.nc

p1002.nc.dxf

And here is the NC file for this plate

ST
21-028
001
p1002
p1002
300W
4
PL 3/8"
B
181.30
177.52
0.00
0.00
9.52
0.00
74.77
2.04
0.00
0.00
0.00
0.00
-
-
-
-
BO
v 123.18u 58.60 22.23 0.00
v 68.35u 111.53 22.23 0.00
SI
v 10.00u 10.00 0.00 10rp1002
AK
v 73.14u 177.52 0.00
v 0.00u 177.52 0.00
v 0.00u 0.00 0.00
v 110.73u 0.00 0.00
v 181.30u 73.09 0.00
v 73.14u 177.52 0.00
EN

[Sebastian_Eiche]

but if I have a look in your NC code and the result of the DXF--> it's the same. The view of the screenshot is not correct, here the coordinates are placed incorrect (from my point of view).

I recreate the plate by using the AK block and set the holes by using the coordinates.
Important is the setting of the AK and BO Block both are using the "u" setting which mean "Unterkante" --> Lower edge.
Plate with holes:

detail (magenta dims for holes)

[allrand]

So I contacted my fabricator to try and resolve this issue and I only just received an answer...

Indeed, as you pointed out, there is no issue with the plate I presented earlier.

Apparently the problem we are having only apply to folded plates such as the following.

ST
  21-028
  001
  mb2
  mb2
  300W
  8
  PL 1/4"
  B
     356.12
     254.00
       0.00
       0.00
       6.35
       0.00
      49.85
       2.03
       0.00
       0.00
       0.00
       0.00
  -
  -
  -
  -
BO
  v    31.75u   165.10  12.70   0.00
  v   158.75u   165.10  12.70   0.00
  v    31.75u    63.50  12.70   0.00
  v   158.75u    63.50  12.70   0.00
  v    95.25u   133.35  12.70   0.00
  v   222.25u   133.35  12.70   0.00
  v    95.25u    31.75  12.70   0.00
  v   222.25u    31.75  12.70   0.00
  v   160.34u   240.23  25.40   0.00
  v    93.66u   306.90  25.40   0.00
SI
  v   10.00u   10.00  0.00  10rmb2
KA
       0.00    203.46    254.00    203.46 -90.00   6.35
EN

I assume the issue is similar, where the reference point for the coordinate system in the viewer is wrong as I get this in ProCAM Lite Viewer

And get this with the .DXF file

Once again, I'm not too familiar with DSTV, but I find it odd that the viewer doesn't display the part correctly.

Thanks again for your help.