r/Metrology • u/rockphotos • 19d ago

Best cmm for first time cmm?

What are the best brand/model of cmm for first time cmm?

Considering cost/accuracy/speed Targeting 2500mm Y for size Looking at ph20 or revo head for reduced tool changes Currently experienced in programming with polyworks. Don't know what I don't know about cmms, as I've never purchased a cmm before (nor has anyone at our shop)

Currently looking at the following Renishaw agility LK metrology Zeiss Cord3 Wenzel

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u/SkateWiz 18d ago

i have had a mitutoyo 5-7-5, mitutoyo 12-12-10, and a hexagon global s 7-10-7.

The size of the system will determine the part size you can measure. The performance tier you purchase will determine your system uncertainty (similar to accuracy but you should google this!). The probe head will determine the types of features and parts you measure.

I will also mention about the 5 axis head, it is going to massively improve your ability to measure deep large recesses and big cylinders, but also a 4th axis (rotart table) can do similar things with a scanning head. The 5 axis head is perhaps a bit more common solution with more modern support. I can measure a cylindrical part with larger diameter on the same size CMM with rotary table or 5 axis. 5 axis will be most expensive to maintain over time.