Kuumbwa KwemaProper blades Uye Iwo eGeometric Zvimiro Mune Chikamu

Sezvo marine propeller iri yemahara-fomu yepamusoro chikamu, chimiro chayo chakaomarara. Kuronga iyo machining chirongwa cheiyo propeller, isu tinofanirwa kutanga taongorora ayo majeometric hunhu. Iwo ekutanga mafambisi, senge screws, aisanganisira imwe kana maviri anotendeuka akatenderedza iyo mugodhi. Pave paya mashandiro akawana kuti kana chikamu chemhepo inotenderera chikatorwa panzvimbo yedenderedzwa rakazara, kugona kwacho kuchawedzera. Zvakatora anopfuura makore zana emakore ekugadzira maitiro kuti aumbe chimiro ichi nhasi. Iyo huru dhizaini nzira yekushambadzira ndiyo nzira yemepu, ndokuti, dhizaini inoitwa nenzira yemepu yakadhonzwa zvinoenderana nemhedzisiro yekuyedza yeiyo propeller modhi. Zvinoenderana nemepu yekugadzira, iyo machine michina anonyanya B-mhando mafambisi, AU-mhando zvinofambisa, uye SSPA-mhando zvinofambisa.

Kuumbwa KwePropeller Blades

Iyo yekumanikidza pamusoro peiyo propeller blade chikamu che spiral surface. The spiral surface inoumbwa nebhazi bar ab inotenderera yakatenderedza axis OO1 yepropeller hub, uye panguva imwechete ichikwira kumusoro ichitevedza OO1 ichimhanya inogara, sezvakaratidzwa muFIG. 1. Nzvimbo yekufamba chero ipi zvayo pamutsara wegeneratric inotenderera. 

Kana ichitariswa kwakananga kuaxis, spiral is arc. Kana ichitariswa kubva kunzira yakananga kune axis, iyo spiral is sinusoid. 

Chinhambwe pakati pechero poindi pane imwechete helix uye yakagadziriswa axis OO1 inogara iripo. Naizvozvo, kana cylindrical surface yakagadzirwa neradius ye spiral seradius (iyo cylindrical centerline ndiyo axis OO1), iyo inotenderera inosanganiswa mu cylindrical surface. Kurerekera kumashure kwebhara kunonzi kurerekera kumashure, kunotaridzwa nekona yekudzokera kumashure ε, kazhinji ε = 5 ~ 15 °.

Chikamu Hunhu hweBlade

Nekuti iwo makasi anofanirwa kumira nesimba repopuru, iwo anofanirwa kuve nehumwe ukobvu. Iwo mashizha ane akakwirira pakukora pane iyo yakatemwa nzvimbo pane akasiyana radii, iyo inotemerwa kuburikidza nekureruka kuverenga.
A cylindrical surface ine radius R (pakati payo inopindirana nechepakati pe propeller shaft) ine tangent kune blade, uye chikamu chakachekwa ndiyo blade yakachekwa pamusoro. Kutarisa kudivi reiyo feather axis, ndege yakachekwa chikamu chearc ine radius R, uye haisi mutsara wakatwasuka. 

Panowanzova nemhando mbiri dzezvikamu zve blade: airfoil uye uta, sezvinoratidzwa mumufananidzo 2. Chinhambwe b pakati pemigumo miviri ye tangent plane inodaidzwa kuti chord width ye tangent plane, iyo inonziwo chord urefu hwe tangent. ndege. Ukuru hwepamusoro hwechikamu hunomiririrwa net. 

Ukuru hwepamusoro hwechikamu che arch-shaped chikamu chiri pakati, ndiko kuti, b / 2. Ukuru hwepamusoro hwechikamu chemhepo yemhepo inenge chikamu chetatu chehupamhi hwechord kubva kumucheto unotungamirira, kureva, inenge b / 3. The nzvimbo yehupamhi hwepamusoro hwechikamu chimwe nechimwe cheblade haisi nguva dzose. 

Chiyero chehupamhi hwehupamhi kusvika kuhupamhi hwechord inonzi chiyero chehukobvu, uye inoratidzwa ne δ, kureva, δ = t / b. δ inoratidza chiyero chekufuta uye kutetepa kwechikamu, uye hombe δ inoratidza kuti chikamu chakakora uye nhete.

Batanidza kuchinyorwa ichi: Kuumbwa KwemaProper blades Uye Iwo eGeometric Zvimiro Mune Chikamu

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