Bizarre readings in PC-DMIS

Bizarre behavior. Absolute arm, calibrates fine, length checks, stylus diameter/STDev all fine within RDS software, regardless of length standard or arm orientation (10-20µm at worst).

In PC-DMIS, same arm, same stylus (or master stylus, for that matter), same length standard, length standard reads several millimeters off (3d distance), and is wildly inconsistent. The readings from PC-DMIS probe readouts window were also noted as each hit was taken, and manual calculation confirms bizarre length readings. It's as if PC-PMIS is not interfacing with arm's scales correctly. Once again, RDS software reads fine.

Is there anything we can do short of software re-installation?

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PacMan23 9 months ago

You need to set your alignment correctly. If your using 3d to measure then whatever your measuring better not move and the way you take point will be very important. 3d just takes into consideration alot of factors. Instead...

I would just set an alignment on the length bar provided. Table surface z, 2 point for a Line on the side of the length bar for y rotation and a point for x origin. Probe the features on the length bar and measure distance, select distance in y
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PacMan23 9 months ago in reply to PacMan23

Length bar is calibrated and should provide what the nominals are. Let's see how off you are.
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Matthew D. Hoedeman 9 months ago in reply to PacMan23

turn OFF probe comp, Pcdmis will comp a single point in the direction the probe is pointing.
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Kai Kendall 9 months ago in reply to Matthew D. Hoedeman

Will give it a try. The errors were also noted directly off the probe readout window (and manual calculation), which is ball center, however.
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Kai Kendall 9 months ago in reply to Matthew D. Hoedeman

Will give it a try. The errors were also noted directly off the probe readout window (and manual calculation), which is ball center, however.
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PacMan23 9 months ago in reply to Kai Kendall

If you aren't using a cad model when probing it's very important how you probe. The probes/hits you take when creating your features for alignment can be affected and then that affects your measurement. Use a cad file so you can see where those point are If possible. And use individual points then create features using those points for alignment. You'll be able to see if there's any funny business going on
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