Tshiab Zog Lub Tsheb Tsav Tsheb Housing Machining

Cov tsev nyob hauv lub cev zaum ntawm qhov chaw ntawm txhua qhov NEV powertrain mob taub hau. Lawv yuav tsum tau ua kom kub ceev ceev, tuav lub foob ruaj khov nyob rau hauv kev co thiab thermal cycling, thiab nyob twj ywm lub teeb. Peb qhov kev xav tau rub tawm tsam ib leeg tas li. Cov txheej txheem nruj nruj thiab cov khoom lag luam tsis sib xws tsuas yog ua rau qhov teeb meem loj dua.

Ib qhov zoo-ua tiav 5 Axis Milling Part txoj hauv kev daws cov teeb meem no ntau dua li lwm txoj kev xaiv. Phau ntawv qhia no yog sau rau kev yuav khoom thiab engineering coj uas xav tau cov lus teb, tsis yog kev xav.

Thermal tswj vs. structural zog
EV motors pov tseg ob peb kilowatts ntawm cov cua kub tsis tu ncua thaum tig dhau 15,000 rpm. Lub vaj tse yuav tsum tau tshem tawm qhov cua sov tam sim ntawd -feem ntau yog los ntawm cov tsho txias lossis cov fins-thaum nyob ruaj khov txaus kom lub stator thiab rotor sib haum. Cov phab ntsa nyias (3-5 mm) pab nrog cov cua sov thiab qhov hnyav, tab sis lawv kuj cuam tshuam lub sijhawm koj clamp lawv los yog siv lub zog txiav.

Complex internal geometry
Cov kav dej txias, txuas tus thawj coj, foob grooves, thiab cov kab tawm tawm tsim cov kab thiab cov kab sib txuas uas 3-axis tshuab tawm tsam kom ncav cuag yam tsis muaj ntau qhov teeb tsa.

Tight tolerances rau bearing rooj thiab ncej alignment
Cov kev xav tau ntau lawm zoo li no:

Stator/rotor bore concentricity Tsawg dua los yog sib npaug rau 0.01 hli

Bearing rooj roundness 0.005-0.008 mm

Bearing lub taub hau ± 0.005 mm

Pem hauv ntej-rau- rear bearing concentricity Tsawg dua los yog sib npaug li 0.02 mm

Cov ntaub ntawv kev lag luam qhia tau hais tias ib txwm muaj ntau- txheej txheem teeb tsa tuaj yeem thawb cov nqi sib xyaw ua ke rau cov vaj tsev thiab cov ncej kom siab li 12%. Nyias-phab ntsa springback ib leeg feem ntau qhia txog 0.04–0.08 mm ntawm qhov yuam kev thaum ib feem tawm ntawm qhov khoom. Cov khoom lag luam thaum ntxov feem ntau qhia txog 5% tus nqi xau los ntawm porosity lossis foob- teeb meem saum npoo; cov txheej txheem mature tsav uas qis dua 1%.

Cov lej no piav qhia tias yog vim li cas cov vaj tsev nyob tsis tu ncua dhau los ua qhov siab tshaj plaws - cov khoom pheej hmoo ntawm ob tus nqi thiab sijhawm.

Txhua lub sij hawm ib feem yog unclamped thiab tsiv, geometric kev sib raug zoo drift.5-Axis CNC Machining qhov chawua kom tiav cov bores tseem ceeb, mounting ntsej muag, txias nta, thiab angled nto nyob rau hauv ib qho kev teeb tsa. Ib qho kev hloov pauv ntawd tshem tawm cov pawg- li niaj zaus tshaj li 0.01 mm concentricity qhov rais.

Tib cov cav tov tuav nkhaus txias fins thiab angled mounting ntsej muag yam tsis muaj tshwj xeeb fixtures los yog lwm yam hauj lwm. Cov cuab yeej luv dua, zoo dua nti ntws, thiab kev sib koom ua ke txuas ntxiv txhim kho qhov chaw tiav ntawm cov grooves thiab cov kabmob rooj zaum thaum txiav lub sijhawm.

Thaum koj teev a5 Axis Milling Partlos ntawm lub peev xwm 5-axis milling chaw tsim khoom, koj tab tom yuav ob qho tib si geometric muaj peev xwm thiab txheej txheem kev ruaj ntseg. Ua ntej- kis tau tus nqi nce, lub sij hawm ua cov hmoov lead ua tau zoo, thiab cov kev hloov pauv hauv lub caij nyoog kawg tshwm sim los ntawm cov teeb meem kev tsim khoom poob qis heev.

Aluminium alloys (6061 / A380)
Tseem yog lub neej ntawd rau cov neeg caij tsheb feem ntau - cov kev pab cuam tsheb . 6061-T6 cov cav tov huv si, tiv taus corrosion zoo, thiab ua kom sov zoo. A380 thiab cov tuag zoo sib xws- cov qhab nias ua haujlwm thaum lub qhov khoob pib ua qhov casting.

Thaum magnesium ua rau kev txiav txim siab - thiab thaum nws tsis
Magnesium alloys (AZ91D lossis siab dua- cov qib kub xws li AE42) txiav qhov hnyav li ntawm 30-35%. Qhov ntawd pab tau ntau yam - tsheb ceev lossis hwm. Kev lag luam tawm - tawm yog qhov tseeb: qis thermal conductivity, cov khoom siv ntau dua thiab cov nqi ua haujlwm, thiab yuav tsum muaj kev tiv thaiv corrosion. Feem ntau cov kev pab cuam nyob nrog txhuas tshwj tsis yog tias qhov hnyav txuag kom pom tseeb txhim kho tsheb- theem hom phiaj.

CNC milled prototypes rau tsim validation
5-axis machining ntawm billet los yog ze -net cam khwb cia blanks xa cov khoom ua haujlwm hauv hnub rau ob peb lub lis piam. Cov qauv no txhawb nqa tag nrho cov thermal, NVH, thiab kev kuaj xyuas ua ntej txiav cov cuab yeej siab.

Txav mus rau hauv qis- ntim ntau lawm
Cov khoom siv tib yam, cov kev pab cuam, thiab cov kev soj ntsuam niaj hnub tuaj yeem ua haujlwm tsav thiab qis - ntim ntau (ntau txog li ob peb puas daim). Khaws cov qauv thiab ntau lawm nrog ib lub Hoobkas CNC milling tshem tawm qhov loj tshaj plaws ntawm cov txheej txheem variation.

Lub sij hawm ua tus coj thiab kam rau ua ntau yam

Prototypes: 7-20 hnub

Tsawg- ntim ntau lawm: 3-8 lub lis piam tom qab txheej txheem khov

Kev ua tau zoo: ± 0.005-0.01 hli ntawm qhov tseem ceeb bores, concentricity Tsawg dua los yog sib npaug rau 0.01 hli hauv ib zaug - teeb tsa 5-axis ua haujlwm

Tshawb nrhiav cov ntsiab lus xws li "khoom muagCNC milled prototypes"feem ntau cov khw muag khoom uas twb nkag siab NEV ntim ramps. Nug rau ob qho tib si qauv thiab cov nqi tsim khoom raws li qhov zoo tib yam.

Ib Tier-1 tus neeg muag khoom tau tuaj rau Sunhingstones nrog cov kua ua kua-txias aluminium vaj tsev uas tau khiav 8-10% seem ntawm cov kabmob-bore concentricity thiab seal leakage. Ntau qhov kev teeb tsa ntawm 3- thiab 4-axis cov cuab yeej yog qhov tseeb hauv paus.

Pab pawg tau hloov cov txheej txheem mus rau ib qho - teeb tsa 5-axis lub tswv yim nrog kev cai qis -distortion fixturing thiab tiag- lub sij hawm thermal them. Stator bore, ob leeg bearing rooj, txias-channel tawm, thiab mounting ntsej muag tau tiav nyob rau hauv ib tug clamping.

Cov txiaj ntsig tom qab kev tsim nyog:

Thawj - kis tawm tau nce siab dua 98%

Concentricity tuav tsis tu ncua hauv 0.008 mm

Lub sij hawm ua los ntawm kev txiav txim mus rau thawj qhov ntau lawm poob ntau dua 30%

Tus nqi xau tom qab kev ntsuas siab poob qis dua 1%

Tib qhov kev khiav hauj lwm kuj suav nrog cov lus pom zoo ntawm lub teeb pom kev zoo uas ua raws li kev lag luam dav dav nyob ib puag ncig kev tsim khoom hnyav heev. Cov neeg siv khoom khov qhov tsim thiab txav mus rau hauv ntim ntau lawm yam tsis muaj kev hloov pauv ntxiv.

Saib tsuas yog tus nqi tsev thiab tsis quav ntsej cov txiaj ntsig thiab cov nqi seem

Hla los yog undervaluing Tsim rau Manufacturability tawm tswv yim

Siv ib tus neeg muag khoom rau cov qauv thiab ib qho sib txawv rau kev tsim khoom

Txais ntau- txheej txheem teeb tsa ntawm qhov chaw uas nws qhov sib koom ua ke tsis muaj chaw rau pawg- nce

Kev kwv yees qhov seem seem thiab thermal distortion hauv nyias-wall aluminium

Ua tsis tiav yuav tsum tau CMM cov ntawv qhia tag nrho thiab siab -cov ntaub ntawv xeem ntawm thawj- kab lus thiab ntau ntxiv

Feem ntau ntawm cov kev ua yuam kev no raug nqi ntau lub sijhawm thiab nyiaj txiag ntau dua li kev sib tham tus nqi ntshiab puas tau txuag.