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- University
- Politecnico di Milano
- Degree programme
- Mechanical Engineering
- Subject
- Advanced Manufacturing Processes
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- Exercises · By topic
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Ultrasonic Machining Exercises
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Advanced Manufacturing ProcessesBy topic
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Ultrasonicmachining exercises USM averagediameterofthe abrasiveparticle d M averageindentationforce F N oftheabrasiveparticle oscifaffzyptitude A M Concentrationffybrgffyparticles Hardness oftheworkpiece Hw HBBrinell Ittiatttne'T.GEarticieV m Numberofimpactingparticles percycle FrequencyoftheUltrasonicVibration f HZ Lengthofpenetrationoftheabrasive grainsintothetool ht m Lengthofpenetrationoftheabrasive grainsintotheworkpiece hw m Indentationratio A mmMaterialRemovalRate MRR MRRafj.FI ji.c4fninLeugthoftheworntoolAw m Depthofthemachinedhole Ag M Longitudinalwear Ku Ku1100 Ad dn Lateralwear le α il RUM Outerdiameterofthecoredrill Do Mendface Innerdiameterofthecoredrill Di Mendface 054 pp'itude A me Spindlespeed n rpm FrequencyoftheUltrasonicVibration f HZ Bottonareaofthecoredri.tl endface Ho m ApDiD Particlesize Sa m Number ofengagedparticles Na NaC1 Indentationforceofone Fa N FnFIsingleparticle To t a ltoolverticalforce Fm N FmFnNa Workpiecehardness Ha HVVickers Indentationdepth W M W kn.FI Timeatinteraction At s At IIEnf.ITi average.ggetEfhecenterDm D DiD Rotationalcuttingstroke Ls n Ls t.ttfonlyifhisinrpm Cracksurface Se m Volumeremovedbyonesingleparticle Ve m VcKSails MaterialRemovalRate MRR III MRRVcfNa Boltonsurfacecoveredbythegrains Ag m AgNaSÌAoCe NotesaboutRUM IftheexercisesaysthataRUMisrealizingaholenormallyitremovesonly aportionofmaterialwhichhastheShape ofaring SothematerialremovedbytheRUMis lighted dei L IfwhencomputingtheindentationWitresults Aitisanabsurdhence it'sbettertoassume 1 WA IftheexerciseasksforthemaximumpossibleverticalforceFmwemust usetheformula FmAgTa x m a x
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