PR 249055 Checking GD&T dimension for PROFILE of a LINE or Surface, i

huangyhg

Checking GD&T dimension for PROFILE of a LINE or Surface, is it absolute required to have a CAD file nominal for checking in Pcdmis?
<< Sea Chia Hui  --  07/08/07  11:59:13>>
For checking GD&T dimension for PROFILE of a LINE or Surface, is it absolute required to have a CAD file nominal for checking in Pcdmis?
Without using the CAD file, after scan Pcdmis always will report GD&T profile line as measured = 0 value
See attached PP
Expected Results:
Even without CAD, should the dimension Profile reports (Max-Min) deviation
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<< Changes made by Neil Kay -- 02/25/09  12:12:05>>
Status:  RESOLVED to CLOSED
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<< Don Turcotte  --  07/12/07  16:19:51>>
The issue here is that profile needs nominal points since the profile calculation is measuring the deviation of each measure point from the corresponding nominal point along the nominal vector.  With a Linear Open scan there is no nominal data since you are defining only a start point and scan direction and the cmm is tracking the surface to return measure points.  You could use a Linear Closed scan, but you will need a cad model to create a Closed scan since that is the only way to define the nominal scan points.
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<< Changes made by Don Turcotte -- 07/12/07  16:20:03>>
Action:  Don Turcotte to Sea Chia Hui, Status:  OPEN to RESOLVED
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<< Sea Chia Hui  --  07/12/07  09:52:40>>
Any update?
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<< Changes made by Tim Wernicke -- 07/09/07  08:39:30>>
Action:  Tim Wernicke to Don Turcotte, Assigned:   to Don Turcotte, Priority:  to High
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