SCSI often gets questions about what’s the best brand for a CMM. We find that the answer should be more focused on accuracy rather than brand. Just because a machine is a certain brand doesn’t necessarily make it the most accurate. In fact, there are several makes, models, sizes, accuracy specifications, probe configurations, and other factors that can drive the accuracy of any given machine.
|Brown & Sharpe 15.22.10||PC-DMIS||1500 mm||2200 mm||1000 mm||5+1L/200 microns||Waterloo, IA|
|DEA Global Advantage 20.33.15||PC-DMIS||2000 mm||3300 mm||1500 mm||2.8+3L/1000 microns||Waterloo, IA|
|Brown & Sharpe 12.22.10||PC-DMIS||1200 mm||2200 mm||1000 mm||2.5+3.0L/1000 microns||Peoria, IL|
|Brown & Sharpe 7.10.7||PC-DMIS||700 mm||1000 mm||700 mm||1.9+4.0L/1000 microns||Lafayette, IN|
|† Factory machine specification for accuracy: L = Length in mm of the feature to be checked
Here’s an example: A hole has a position tolerence of 0.04mm. The distance to the datum is 200mm. For the inspection of this feature, a CMM with a volumetric length uncertainty of 2.5+3.0L/1000 microns will be used.
|Feature||Tolerance (mm)||Tolerance Requirement (mm)||Size/Distance (mm)||Machine Uncertainty Required||Manufacturer’s Specs||Machine Capability|
|Feature Length||+/- 0.01||0.02||200||0.004||2.8+3L/1000||0.00340|
|Profile of a Surface||0.01||0.01||200||0.002||2.8+3L/1000||0.00340|
If you have a specific part you’d like to measure on one of our CMMs, please contact us:
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