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Prob Compensation when figuring distance

craftywerks
This may seem simple but it is giving us some trouble, we have 2 points and we want to know the distance in-between them. But whereas we can come down with the probe at 90 degrees for the first point the second one is "under" the part and when we change the angle of the arm and use the side of the probe the measurement adds in the probe diameter ( even though probe compensation is turned on and seems to be working if the probe is coming straight down ). Can someone tell me what I am missing so the romer can compensate this out?



Also I have a part that has a seat and a topside , if I make a plane on the seat and create a flatness profile on the seat how can I move the plane up to the top side to repeat the process off the that plane?

We are using PC-Dmis Pro 2014 Service pack 4

Thanks
  • This may seem simple but it is giving us some trouble, we have 2 points and we want to know the distance in-between them. But whereas we can come down with the probe at 90 degrees for the first point the second one is "under" the part and when we change the angle of the arm and use the side of the probe the measurement adds in the probe diameter ( even though probe compensation is turned on and seems to be working if the probe is coming straight down ). Can someone tell me what I am missing so the romer can compensate this out?



    I rarely use these arms but my experience is that you need to perform a pulled hit to create the vector of the point so PC-DMIS knows which direction to apply probe compensation.
    I could try to explain a pulled hit but you might want to just search the help file for a better understanding.
  • The last part of the arm (with the probe tip) must be angled so the probe shaft is pointing outward, away from the material. If not, the probe comp will be in the wrong direction. When this is physically impossible (too close to the table, for example), a "pulled hit", as Peter mentions, is the way.
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