hexagon logo

Probe Calibration and Form Resutls

Can probe calibration affect form results?

Using TP20, 3 way (T-shaped) build. Taking about 50 vector points around a cylinder and constructing a cylinder (least squared). Output cylindricity and it measured 0.0024" yesterday afternoon. Calibrated the probe this morning, re ran the same part and cylindercity measured 0.0011". All the other diameters and distances measured were different by 0.0001"-0.0002".
Parents
  • In the past, without removing the part from the CMM, the results are repeatable. The diameter of the cylinder is around 8 inches and is about 7 inches long. So the axis of my cylinder lays on my 454s Y axis. I can't fulling reach all the way around the cylinder so I move as low as I can go to maximize the spread of points. Using an extended force module and cal results are usually always under 0.0004" std dev.
Reply
  • In the past, without removing the part from the CMM, the results are repeatable. The diameter of the cylinder is around 8 inches and is about 7 inches long. So the axis of my cylinder lays on my 454s Y axis. I can't fulling reach all the way around the cylinder so I move as low as I can go to maximize the spread of points. Using an extended force module and cal results are usually always under 0.0004" std dev.
Children
No Data