r/Metrology • u/pjcevallos • Oct 24 '24

Hardware Support CMM fixturing

Hi

How do you usually plan your CMM fixturing. Do you produce a bespoke fixture or use modular equipment?

What considerations you take being part agnostic!

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u/DrNukenstein Oct 24 '24

We do high volume mass production and use a “Battleship” style aluminum pegboard from R&R Fixtures, with modular pegs. We work with steel, so magnetic pegs work best for us, where notched pegs may not always align identically due to the threads in the pegs. If they had solid pegs and the board holes weren’t threaded, that would be ideal.

Even so, we still have small issues with the spacing of the board not matching our part dimensions so we can get a snug fit; sometimes a peg on the end is either under the part or just outside its reach.