Summary: A distance-time graph tells us how far an object has moved with. A gap analysis can be useful for companies leading up to or after a new product launch. The examples below are intended to showcase the wide range of applications companies can find for a gap analysis. Similarly it is necessary to know angular velocities of links for acceleration analysis. In reality, the gap analysis method can be used in all types of situations and business areas. Then the velocity analysis is performed which requires the angular position of the links to be determined beforehand.
I look down at the XY deviation section.and I have results in ONE axis that exceeds the diametrical tolerance, but yet it is showing green on the CAD. Motion is a change in position measured by distance and time. Graphical method starts with position analysis by simply drawing the linkage mechanism to scale. What exactly is the analysis doing? I have rodlets that show two green arrows on the model.but the position result is clearly RED and out of tolerance. Shame on me for really not double checking the results, but the customer was wondering why the CMM data and the CAD graphical analysis was not matching up.and I had no answer for him. I turned on upper and lower segment analysis separately to capture these screenshots and used the drop down box to select POSITION. The diametrical tolerance was at MMC with no MMB on the datums. They were composite FCF's with only ONE position icon sharing both upper and lower segments. The positions were dimensioned in Xactmeasure using "current alignment". One of the things I did for them is add the CAD graphical analysis screen shots onto a PowerPoint for the positions of 24 rodlets to their respective DRF's.
I am working on a project and had the customer on the line today regarding the inspection results.
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