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Analysis view question



​So long story short, I've never used the analysis views. My question is the does the boundary automatically project to the tolerance limit based on the cad/dimensions or is there a setting that needs input to define the profile tolerance. Management has questioned the zone that's being projected on the report and I'm uncertain of the answer. The main concern is the vectors are going both directions. This coupled with production having exhausted all the test parts they have and need to know how much to offset the profile pattern. I'm running 2019 R1 on a global green with a Leitz Scanning head.
I believe they have an issue with the machining process of the pattern. Any input is appreciated. I'm not impressed with the FCF note either, but I can interpreted the intent at least.

Parents
  • At first glance, I'd assume that the drawing is showing the MMC and indicating that the profile applies unilaterally from the MMC. Without further clarification from the design engineer, I'd use 0.1 (U) 0 as has done.

    I'd agree with in that you may be seeing tool deflection in those radii. Was this pattern evident in the very first setup piece? Have you noticed it getting worse for each newly created piece? What is the ratio between the cutting tool diameter and the feature diameter?
Reply
  • At first glance, I'd assume that the drawing is showing the MMC and indicating that the profile applies unilaterally from the MMC. Without further clarification from the design engineer, I'd use 0.1 (U) 0 as has done.

    I'd agree with in that you may be seeing tool deflection in those radii. Was this pattern evident in the very first setup piece? Have you noticed it getting worse for each newly created piece? What is the ratio between the cutting tool diameter and the feature diameter?
Children
  • I confirmed the tool deflection with the CNC programmer, and he suspects the same issue and is addressing the CNC program on his end. So far, they have only cut 3 parts at this point since they are titanium, they are fairy costly. The deflection has been consistently worse at the radii. I just had the manager confirm that something in the CNC program wasn't compensating correctly either which confirms that data. Crossing my fingers that the next part is good.