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Opinions on S.F. 4.5.4 CMM

dwade
Need some input if anyone is using a S.F. 4.5.4 as management is looking to buy one.

If you do, what are your thoughts on the CMM? Are they accurate? Are the repeatable? Any mechanical issues with them? Any and all legitimate comments are welcome.

TIA
Duane
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  • We have 2 SF 4-5-4 with TP20, PH10T & Probe changer
    controller on these are UMP360
    2 machine R&R repeatability correlated across ~ 3 inches is under .00035" to a global (same parts run on both machines, 2 operators 10 times, 3 trials)
    Working envelope is small with probe angles at right angle; 7 " long part will be close if changer is involved but doable.
    moving CMM follow similar outline as acgarcia, shut it down, lower on to wheels. Move. Raise up and use a spirit level to level machine. Power up and calibrate.
    I have pushed for Global over these for the tolerances we have for some parts we need that extra tenth over buying these

    I would look at this also Post #18 By Josh C

    Measuring the same part on 2 CMMs, Different Results - PC-DMIS User Forum
    https://www.pcdmisforum.com/forum/pc-dmis-enterprise-metrology-software/pc-dmis-for-cmms/409069-measuring-the-same-part-on-2-cmms-different-results/page2

    We have 2 4.5.4 SFs. I ran a part 5 times on CMM A and then ran the exact same part on CMM B. Got different and same results. CMM A runs 2016 and CMM B runs

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  • We have 2 SF 4-5-4 with TP20, PH10T & Probe changer
    controller on these are UMP360
    2 machine R&R repeatability correlated across ~ 3 inches is under .00035" to a global (same parts run on both machines, 2 operators 10 times, 3 trials)
    Working envelope is small with probe angles at right angle; 7 " long part will be close if changer is involved but doable.
    moving CMM follow similar outline as acgarcia, shut it down, lower on to wheels. Move. Raise up and use a spirit level to level machine. Power up and calibrate.
    I have pushed for Global over these for the tolerances we have for some parts we need that extra tenth over buying these

    I would look at this also Post #18 By Josh C

    Measuring the same part on 2 CMMs, Different Results - PC-DMIS User Forum
    https://www.pcdmisforum.com/forum/pc-dmis-enterprise-metrology-software/pc-dmis-for-cmms/409069-measuring-the-same-part-on-2-cmms-different-results/page2

    We have 2 4.5.4 SFs. I ran a part 5 times on CMM A and then ran the exact same part on CMM B. Got different and same results. CMM A runs 2016 and CMM B runs

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