invalid target sheet body in NX5 using trim sheet 1

[scope63]

hi all

i am using NX5 and am trying to trim a sheet body along a profile- not necessarily straight and often get an error message that states " invalid target sheet body. delete the feature". this message to me means that the surface/face that i want to trim is no valid, but to delete it??? i have tried to loosen the tolerance but get the same message. i have been using ug since ver 16 and have not seen this. does any one have any suggestions??

Scott Copeland
Mould Designer
G-Mag International Inc

http://www.g-mag.ca

 

[hudson888]

Scott that is a good one. I've never had that exact error message, but I would be willing to bet that there is something amiss with your geometry that you're probably not even aware of.

Run part cleanup, then examine geometry on you target sheet/solid. Fix any faults that you may find you should be able to get by with tiny object, misaligned, tangency and tolerance errors, but the more serious problems may need to be addressed. The standard modeling tolerances that NX uses are good okay to use as a guide, tightening the tolerances can be counter productive. You may find no problems.

I guess you ought to check the trimming geometry after that make sure if it is just a curve that it avoids looping back on itself. Again if I were betting sight unseen I'd rate this odds over the sheet being the problem. Place a line instead in the same area and try to trim to that, it may prove to be a revealing experiment.

If you can't find any geometry problems you'll have to post the error message possibly an extract of the part file and any other further info. Possibly you ought to contact you customer support people or GTAC via PLMS etc to report the problem, but do keep us in the loop we'd like to find out what it is and how you go with it so that we can learn from the experience also.

Best Regards

Hudson

 

[scope63]

thanks hudson888

it appears that you are right, i do have some geometry that is a problem. this geometry was imported from catia. i did have to call GTAC anyway because i was at a point were this was stopping me from continueing. i guess i need to start to do an examine geometry more often, especially with imported data. i'm just lucky that i am using extracted faces so i am able to fix the problem area. GTAC has told me that this message does say that there is a problem with the geometry, but when it tells you to 'delete' it that is were i started to question this message.

thanks for your response

Scott Copeland
Mould Designer
G-Mag International Inc

http://www.g-mag.ca