I was just measuring a fixture using an Infinate Arm with PC Demis 2011 MR1 and a hard probe. I created a new alignmnet at the end of a part program just to check the location of a feature in a different orientation. I dimensioned the feature and noticed that it was suddenly off location by about 2mm rather that the .5mm it showed off before adding the alignment. I went to the CAD and I could see the measured feature change locations on the model by about 2mm from before the alignment to after. I understand that the nominals should change when using a different alignment and the measured location would change to correspond with the change in the axis, but how is the location of the feature changing relative to the model? I'm wondering if this has something to do with compensation software? Someone please help explain this one to me.
But they didn't move relative to the alignment? I changed the alignment by 20 degrees and the origin was some distance away (500mm). The resulting move in the location of the measured features should have been large if they were moving relative to the alignment, but this was barley noticeable (2mm). I closed the program and restarted and haven't seen it again, but that made me a little nervous.
But they didn't move relative to the alignment? I changed the alignment by 20 degrees and the origin was some distance away (500mm). The resulting move in the location of the measured features should have been large if they were moving relative to the alignment, but this was barley noticeable (2mm). I closed the program and restarted and haven't seen it again, but that made me a little nervous.
