Rips or Tears in SW2006 Models
Rips or Tears in SW2006 Models
(OP)
I have had a few instances where the SW2006 model that I created (using a cavity process) has what would visually best be described as a tear in the model. What I mean by this is that when the model is viewed from a certain orientation - say from the front plane, you can actally see background lighting through tears in the model. When you view the same plane from the opposite side, these tears or holes are not there, nor should they be.
I have been told by a machine shop that when they go to cnc cut the part, the model does not come in clean in the area of the tears.
Has anyone seen this sort of thing before and can help to tell me how to prevent it?
I have been told by a machine shop that when they go to cnc cut the part, the model does not come in clean in the area of the tears.
Has anyone seen this sort of thing before and can help to tell me how to prevent it?






RE: Rips or Tears in SW2006 Models
Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)
RE: Rips or Tears in SW2006 Models
The torn surface cannot be selected using the mouse.
The only reason why i know it exists is because when the model was read in on someone elses system, it is there as well.
Think of this particular model as a thick ring with an inner and an outer diameter. On one side the surface has been profiled using the cavity feature. The profile only goes about 10% thru the thickness of the ring.
When you view the profiled surface from above, you see the some areas where the backround is visible right thru the part. When you view the ring from the opposite flat side, no tears exist, and the flat surface looks fine.
RE: Rips or Tears in SW2006 Models
Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)
RE: Rips or Tears in SW2006 Models
Best Regards,
Heckler
Sr. Mechanical Engineer
SW2005 SP 5.0 & Pro/E 2001
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RE: Rips or Tears in SW2006 Models
Tools -> Options -> Document Properties Tab -> Image Quality and bumping up the "Shaded and draft quality HLR/HLV resolution" slider.
Eric
RE: Rips or Tears in SW2006 Models
Are you creating it using surfacing?
I tried with doing some surfacing. If the surface is created a certain way and the light is right, it can create the illusion. But, because it is a surface, it can at times get imported into CAM. Sometimes you may need to thicken it.
Chris
Systems Analyst, I.S.
SolidWorks 06 4.1/PDMWorks 06
AutoCAD 06
ctopher's home (updated 06-21-06)
RE: Rips or Tears in SW2006 Models
http://webgearservices.com/TornSurface.JPG
RE: Rips or Tears in SW2006 Models
RE: Rips or Tears in SW2006 Models
EEnd - Bumping up shaded quality doesnt fix it
Ctopher - i am not using surfacing
I have noticed that when I save the file in step format, then reload it from step, the image looks good. However, I loose the tree.
Any other ideas?
RE: Rips or Tears in SW2006 Models
RE: Rips or Tears in SW2006 Models
If you have a solid body, then the tear or hole is not there as far as SWX is concerned. It's more than likely a graphics thing which you are picking up visually. What are your graphic card specs?
If you have a solid body and your machine shop has issues with the translated model then it's a data translation issue. SWX may be creating geometry that it doesn't like to display correctly and the CAM software doesn't like at all.
Probably no easy answer to this one - data translation issues can be an absolute nightmare at times. Sorry.
RE: Rips or Tears in SW2006 Models
RE: Rips or Tears in SW2006 Models
So if you mad a box .5" deep and you made a cut that was .49999999 deep that thin little bit can show a transparent surface.
That doesn't look like what you are seeing, unless you have a cut-out behind what we are viewing in the jpeg file. Since it was molded, try andjusting the size a bit and see if it continues.
Regards,
Scott Baugh, CSWP
www.scottjbaugh.com
FAQ731-376
RE: Rips or Tears in SW2006 Models
As a work around try a zero offset surface, delete the transparent face, then knit. Or do a split line across the transparent face...
Matt
RE: Rips or Tears in SW2006 Models
I am not cutting that deep into the solid ring. I have tried adjusting the thickness of the ring before the mold property is used - it doesnt seem to help.
The graphics card is on the tested and verified ok list.
RE: Rips or Tears in SW2006 Models
if you have to bodies intersecting anyting that will cause a zero-thickness you will see this type of issue.
Regards,
Scott Baugh, CSWP
www.scottjbaugh.com
FAQ731-376