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Measuring 2way round slot as square slot

Hi guys I'm running into issues, I am trying to measure my 2way which is a round slot as a square slot. (Diamond shaped RFS Locator) It takes the points on the sides then faults out saying position out of machine stroke. Not sure what's happening can anyone suggest something different? I was considering using vector points but because the parts co-ordinate system is angled to the surface im not able to use a direct offset for the surface. Attached is a screen shot of slot settings.

I am measuring it immediately after my DCC tooling ball alignment!

Thanks!
Parents
  • noticed the issue. However, you should never ever ever NEVER use canned slot cycles in any CMM software. For example, with PC-DMIS round slot, it only measures the radii, assumes form is perfect, and assumes the sides are perfectly tangent.

    In real life, these assumptions are dangerous. Just break the element down into its base elements (circles or cylinders, and for the sides, planes/width or points/midpoints and formula for any bonus tolerance).
Reply
  • noticed the issue. However, you should never ever ever NEVER use canned slot cycles in any CMM software. For example, with PC-DMIS round slot, it only measures the radii, assumes form is perfect, and assumes the sides are perfectly tangent.

    In real life, these assumptions are dangerous. Just break the element down into its base elements (circles or cylinders, and for the sides, planes/width or points/midpoints and formula for any bonus tolerance).
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