First level of training (very easy techniques) :
- First theoretical notions on machining vibrations
- Simulation and measurement of static stiffnesses, natural frequencies, damping factor, and optimal cutting condition calculation.
- Analysis on the cases choosen by the client.
=> The trainees will be able to diagnose and methodically react in front of the machine-tool.
Second level of training :
- Theoretical notions on machining vibrations
- Measurement and analyze of machining vibrations signals
- Measure and analyse of spindle and axis vibrations.
- Measure and analyse of radial cutting force (because it is the fundamental source of machining vibrations)
- Analysis on the cases choosen by the client.
Recommendend measurement equipments :
- Microphone : “blue snowflake” (from Amazon, ≈80€).
- Manual dynamometer 300 Newtons (≈160€ from : http://www.metil.be/pdf/sn-fr.pdf).
- Long stroke micrometric dial gauge (≈150€ from Mitutoyo, n° 513-425-10E).
- 1 or 2 accelerometers 8776A50M6 (sensitivity 100mV/g) (≈500€), 8452A (magnetic base) (≈140€), 8436 (standard base) (≈25€), 8432-5 (glue wax), BM-174-6 (cable) (≈45€, more lenght of cable +≈60€), + maybe 8778A500 (miniature sensor for small tool tap testing, 10mV/g) (≈790€) + maybe Kistler-8786A5 (≈650€) (high sensitivity sensor for axis machine analysis), from www.kistler.com
- USB signal conditionner “PLUG-n- DAQ Lite” (≈1000€) from www.roga-instruments.com
- 1 or 2 suitcase : https://www.amazon.fr/Brubaker-professionnelle-Entièrement-Modulable-aluminium/dp/B001NI6D3G, or : pelicases ≈ 250€ from www.abylon.fr
- Free Audacity software : https://www.audacityteam.org
=> The trainees will be able to precisely diagnose and methodically react using all the possibles techniques.