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correct way to setup and check profile tolerance of the part using Laser scan

I am quite new to Laser scan.. Please advise quick and correct way to setup and check profile tolerance of the part using Laser scan on different type of material as Aluminum, Casting part...

Hardware:

7 axis Absolute Romer Arm with Laser Scanner V3P/8525

SW:

PC-DMIS 24.12 CAD++ Scanning/MESH ARM /RDS latest version

Part:

1> Casting  (profile tol. spec from +/-0.030"

2>Mixed Aluminum   (profile tol. spec from +/-0.010")

3>Steel   (profile tol. spec from +/-0.010"

Thanks so much



Hardware: 7 axis Absolute Romer Arm with Laser Scanner V3P/8525 SW: PC-DMIS 24.12 CAD++ Scanning/MESH ARM /RDS latest version Part: 1> Casting (profile tol. spec from +/-0.030" 2>Mixed Aluminum (profile tol. spec from +/-0.010") 3>Steel (profile tol. spec from +/-0.010"
[edited by: NikitaT at 7:18 PM (GMT -5) on May 15, 2025]
Parents Reply
  • it USED to be the 10-to-1 rule.  Your measuring device must have an accuracy of 1/10 the tolerance.  It has been 'changed' to 4-to-1 by most.  Meaning that if your tightest tolerance is +/-0.010" your measuring device must be capable of measuring down to +/-0.001".  capable of, not just able to report that many decimal places.  An arm usually is AT BEST able to measure to +/-0.0015" so the 'tightest' tolerance your should use it for is +/-0.006".  Add in Uncertainty and you are riding the ragged edge of disaster trying to approve that profile.

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