特斯拉无叶涡轮泵制作方法Word文档下载推荐.docx
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Disks
AtfirstItriedusingCDsbecauseoftheirlargesurfaceareas,buttheydidn'
tholduptoowellunderthemillingmachine.Ialsohadastackofplattersfromoldanddefectiveharddrives,butIdidn'
tknowifthesmallerdiameterdiskswouldworkaswell.
OneproblemIranintoisthatsomenewerharddrivesuseceramicdisksinsteadofmetal.They'
restillcoatedwithmetal,butthey'
rethinnerandacoupleplattersshatteredwhenItriedtomachinethem:
Myoriginalplanforthecenterholepatternhadsmallholes(forthreadedrodsandwashersforspacers),aswellaslargeholes(forairvents).
ThesecondsetofplattershadradialarcscutinthemsuchthattheinsideedgeoftheradialcutoutisclosetotheoutsidediameterofthespacersthatIremovedfromtheharddriveassemblies.
Theharddriveplatterswerestackedandclampedtoarotarytablebetweentwosheetsofscrapaluminiumbutthetopdisk(abovepicture)stilltooksomeextradamage.Therestoftheplatterslookmuchbetterthough(seethecompleterotorassemblybelow).
Spacers
Idecidedtobelazyandusethespacersthatwerebetweentheplattersintheoriginalharddriveassembliesratherthanmachinemyown.Thisincreaseddistance(roughly.05"
insteadof.012"
)mayleadtoturblentflowratherthanlaminarflowbutwillbecloseenoughforthisproject.
Shaft
Withtheturbineplattersandspacerscomplete,Iturnedashaftfromroundstock.Theinsidediameterofboththeplattersandspacersis.98"
whichisthediameterofthethicksectioninthemiddle.Ileftthewholelengthat.98"
untilIknewthewidthofthechamberandtheinsidediameterofthebearings.Thewidepartis1.77"
longwhichfitsinsidethe2"
thickacrylicchamber.
Collars
Thecollarsareessentiallywiderversionsoftheplatterspacers.Theinsidediameterhastofitontheshaft,buttheycan'
tbetootallsotheyblocktheventilationholesinthedisks.Also,theycan'
tbetoowideortheywilltakeuptoomuchhorizontalspaceinsidethechamber.Imadeeachcollar.3"
whichisenoughspacefora#10-32setscrewtoholdthem(andeverythingelse)inplace.
Bearings
Thebearingsandbrassfittingsweretheonlynewpartsinthisproject(everythingelsewasreusedfromscrapmaterials).ThesemetricbearingswerepulledfromaboxofoldandusedbearingsandIhadtomachinetheshaftandsidepanelstofitthem.
RotorAssembly
Thereareelevenplattersandtenspacersheldtogetherbythetwocollars.TheharddriveplattersarehardtokeepcleansoIworegloveswhenassemblingtherotor.Thereshouldbeafairamountofpressurebetweenthetwocollarsorthediskswillrotateabouttheshaftinsteadofwithit.
Chamber
Themainchamberisanacrylicblockmachineddownto4.75"
x4.75"
x2"
.Thesquareblockwasmountedina4-jawlathechuck,drilled,andthenboredout.Thefinalcutoutisabout.07"
largerthanthedisks.Theairinletistapedfora1/4"
pipethreadandalloftheotherholesaretapedfor1/4-20socketheadcapscrews.
SidePanels
Thesidepanelsare.47"
thickacrylicandhaveuntaped.25"
holesforalignmenttothemainchamber.Thecenterholeis.6"
witha.280"
deepcounterboreforthebearing.ThebearingsaremetricsoIusedthe4-jawchuckandboringbaragaintotryforapressfitintothesidepanel.However,Imadethecounterboreafewthousandthstoobigwhichallowsthebearingtorotateinthesidepanel.
ManyotherTeslaTurbinesthatI'
veseenonlinehavelargerventilationholesinthesides.Iwasgoingtocutthesameradialpatternfromthedisksinthesidepanels,butIdecidedthatwasn'
tnecessaryafteratrialrunwithjustthe.6"
hole.
Assembly
Thetwobrassfixturesarea5/16-45tubeunion(picture5),anda1/4tube,1/4pipehosebarb(picture6).
CompleteTurbine