Connotation thiab influencing yam ntawm machining zoo

Nrog rau kev nrawm nrawm ntawm kev lag luam thev naus laus zis tshiab thiab kev txhim kho, kev tsim kho tshuab tau maj mam hloov phau ntawv ntau lawm hauv qee qhov chaw tsim khoom, tshwj xeeb tshaj yog hauv kev lag luam tsim khoom.Vim yog qhov tshwj xeeb siv ib puag ncig ntawm qee qhov tseem ceeb, xws li qhov kub thiab txias, txhawm rau kom muaj kev ruaj ntseg ntawm qhov chaw, qhov zoo ntawm cov khoom yuav tsum ua tau raws li cov qauv tsim nyog, uas tso siab rau cov kev cai siab rau kev ua haujlwm zoo.Machining zoo yog tsim los ntawm ob qhov chaw: machining raug thiab machining nto zoo.Tsuas yog los ntawm kev tswj hwm ob qhov tseem ceeb ntawm kev sib txuas hauv machining, tuaj yeem tswj tau qhov zoo ntawm machining thiab qhov zoo ntawm cov khoom siv tshuab ncav cuag tus qauv siv.

1. Connotation ntawm machining zoo

Machining zoo feem ntau suav nrog ob yam: machining raug thiab machining nto zoo, uas cuam tshuam los ntawm qhov zoo ntawm geometry thiab cov khoom siv feem.

1.1 zoo ntawm geometry nyob rau hauv cov txheej txheem ntawm machining, qhov zoo ntawm geometry yuav cuam tshuam qhov tseeb ntawm machining.Geometric zoo yog hais txog geometric yuam kev ntawm cov khoom nto thiab interface nyob rau hauv cov txheej txheem ntawm machining.Nws feem ntau suav nrog ob yam: macro geometry yuam kev thiab micro geometry yuam kev.Feem ntau, qhov sib piv ntawm yoj qhov siab thiab wavelength ntawm macro geometry yuam kev yog siab dua 1000. Feem ntau, qhov piv ntawm yoj qhov siab rau wavelength yog tsawg dua 50.

1.2 zoo ntawm cov ntaub ntawv nyob rau hauv machining, qhov zoo ntawm cov ntaub ntawv yog hais txog cov kev hloov ntawm qhov zoo ntawm lub cev lub cev muaj feem xyuam rau lub nto txheej ntawm txhua yam khoom thiab matrix, kuj hu ua txheej txheem hloov kho.Nyob rau hauv cov txheej txheem ntawm machining, qhov zoo ntawm cov ntaub ntawv yuav cuam tshuam rau saum npoo zoo, uas yog feem ntau xav txog nyob rau hauv kev ua hauj lwm hardening ntawm txheej txheej thiab kev hloov ntawm metallographic qauv ntawm txheej txheej.Ntawm lawv, kev ua hauj lwm hardening ntawm txheej txheej yog hais txog qhov nce ntawm hardness ntawm txheej txheej hlau ntawm cov khoom siv kho tshuab vim cov yas deformation thiab zawv zawg ntawm cov nplej thaum lub sij hawm machining.Feem ntau, peb yam yuav tsum tau txiav txim siab nyob rau hauv kev ntsuam xyuas ntawm machining hardness ntawm txhua yam khoom, uas yog, nto hlau hardness, hardening tob thiab hardening degree.Kev hloov ntawm metallographic qauv ntawm txheej txheej yog hais txog kev hloov ntawm metallographic qauv ntawm nto hlau ntawm cov khoom siv kho tshuab vim qhov kev txiav txim ntawm kev txiav cov cua sov hauv machining.

2. Muaj feem cuam tshuam ntawm machining zoo

Nyob rau hauv tus txheej txheem ntawm machining, machining zoo teeb meem feem ntau muaj xws li txiav nto roughness thiab sib tsoo nto roughness.Feem ntau, cov yam ntxwv uas cuam tshuam rau qhov zoo ntawm machining yuav muab faib ua ob yam: geometric yam thiab lub cev yam.

2.1 txiav nto roughness nyob rau hauv machining, qhov teeb meem zoo ntawm kev txiav nto roughness feem ntau muaj xws li ob yam: geometric yam thiab lub cev yam.Ntawm lawv, geometric yam muaj xws li lub ntsiab deflection lub kaum sab xis, sub deflection lub kaum sab xis, txiav pub thiab lwm yam, thaum lub cev muaj xws li cov khoom siv workpiece, txiav ceev, pub thiab lwm yam.Hauv machining, cov ntaub ntawv ductile yog siv rau kev ua haujlwm ua haujlwm, cov hlau yas ntawm cov ntaub ntawv yog qhov ua rau deformation, thiab lub tshuab ua haujlwm yuav ntxhib.Yog li ntawd, txhawm rau txo qhov roughness ntawm qhov chaw thiab txhim kho qhov kev ua tau zoo thaum siv cov pa roj carbon nruab nrab thiab cov khoom siv qis carbon steel nrog cov tawv tawv zoo, nws yog ib qho tsim nyog yuav tsum tau ua kom tiav quenching thiab tempering kho ntawm kev ua tiav.

Thaum machining cov ntaub ntawv yas, kev txiav ceev yuav muaj kev cuam tshuam zoo rau lub tshuab roughness.Thaum lub txiav ceev mus txog ib qho qauv, qhov tshwm sim ntawm cov hlau yas deformation qis dua, thiab qhov roughness ntawm qhov chaw kuj tseem me dua.

Thaum tswj cov kev txiav, txo qhov pub tuaj yeem txo qhov roughness ntawm qhov chaw.Txawm li cas los xij, yog tias tus nqi pub tsawg dhau, qhov roughness ntawm qhov chaw yuav nce ntxiv;Tsuas yog los ntawm kev tswj tus nqi noj kom tsim nyog tuaj yeem txo qhov roughness ntawm qhov chaw.

2.2 sib tsoo nto roughness nyob rau hauv cov txheej txheem ntawm machining, qhov sib tsoo nto yog tshwm sim los ntawm cov qhab nias ntawm abrasive nplej ntawm lub sib tsoo log.Feem ntau, yog tias cov xuab zeb ntau dhau los ntawm cheeb tsam ntawm lub workpiece, qhov khawb ntau dua ntawm lub workpiece, thiab qhov contour ntawm khawb ntawm lub workpiece cuam tshuam rau saum npoo ntawm kev sib tsoo.Yog hais tias lub contour ntawm lub thais ntawm lub workpiece yog zoo, lub nto roughness ntawm kev sib tsoo yuav qis dua.Tsis tas li ntawd, cov yam ntxwv ntawm lub cev uas cuam tshuam rau saum npoo roughness ntawm kev sib tsoo yog kev sib tsoo thiab lwm yam.Nyob rau hauv machining, kev sib tsoo log ceev yuav cuam tshuam rau kev sib tsoo nto roughness, thaum lub workpiece ceev muaj qhov cuam tshuam rau kev sib tsoo nto roughness.Qhov ceev ntawm kev sib tsoo lub log, qhov ntau ntawm cov abrasive hais ib cheeb tsam ntawm workpiece nyob rau hauv lub sij hawm, thiab qhov me me ntawm qhov roughness.Piv nrog rau qhov ceev ntawm kev sib tsoo log, yog tias qhov ceev ntawm lub workpiece ua sai dua, tus naj npawb ntawm cov nplej abrasive dhau los ntawm lub tshuab ua haujlwm ntawm lub sijhawm ua haujlwm yuav tsawg dua, thiab qhov roughness ntawm qhov chaw yuav nce ntxiv.Tsis tas li ntawd, thaum lub sij hawm pub ntev ntawm lub log sib tsoo me dua qhov dav ntawm lub log sib tsoo, qhov saum npoo ntawm lub workpiece yuav raug txiav ntau zaus, qhov roughness ntawm lub workpiece yuav nce, thiab qhov roughness ntawm lub workpiece yuav txo.


Post lub sij hawm: May-24-2021