Mumutauro weinjiniya yemakanika, "kusingapindi" ipfungwa yakanaka yedzidziso - chimwe chinhu chinoonekwa mumashoko ematambudziko emabhuku asi hachimbofi chakaitwa zvizere munyika yepanyama. Asi mumatanho ekunyatsoisa silicon wafers mumichina ye lithography, masisitimu e laser anonyora zvakananga, michina yekuboorera PCB inomhanya zvakanyanya, uye mapuratifomu ekuongorora e nanometer, zvinhu zvinofamba zvinosvika pedyo zvikuru nepfungwa iyi. Zvinoita izvi kuburikidza netekinoroji inonzi air bearing, uye pamusoro pefirimu diki remhepo rinenge riri granite chaiyo.
Kunzwisisa tekinoroji yekuisa mhepo — fizikisi yayo, zvinodiwa zvayo, uye zvipingamupinyi zvayo — hazviparadzaniswi nekunzwisisa kuti nei granite iri chinhu chinosarudzwa panzvimbo dzinotungamira kutakura mhepo. Matekinoroji maviri aya anoshanda pamwe chete: mabheyaringi emhepo anogonesa kushandiswa kwehunhu hwepamusoro hwegranite, uye granite inogonesa mabheyaringi emhepo kuwana kugadzikana uye kurongeka kwenzvimbo kunoita kuti akwanise kushandiswa pakutanga.
Fizikisi yeKushanda kweMhepo Inotakura
Bearing yechinhu chinotenderera — bearing yebhora kana kuti roller bearing — inotsigira mutoro unofamba kuburikidza neHertzian contact: mabhora kana maroller anodzvanya panzira dzemujaho, achichinja zvishoma pasi pemutoro uye achitumira simba kuburikidza nenzvimbo diki asi isina zero contact. Kubatana uku kunokonzera kukweshana, kunounza kupera, uye kunogadzira nzira yemakanika iyo vibration inogona kupfuudzwa kubva pabearing kuenda kuchimiro chakatsigirwa.
Mhepo inotenderera inotsiva kubatana kwakasimba uku negasi rakamanikidzwa — kazhinji mhepo yakachena, yakaoma yakamanikidzwa, kunyange zvazvo nitrogen inoshandiswa mukushandiswa uko hunyoro hwemhepo hune dambudziko. Chinhu chinofamba ("slider" kana "carriage") chinoparadzaniswa nepamusoro pegwara nepakati pema micrometer mashanu kusvika gumi nemashanu. Mhepo inomanikidzwa inopihwa kuburikidza nepakati pemaburi madiki kana pamusoro pemaburi ari kumeso kweslider, inoyerera ichipinda mupakati apa, uye yozobuda pamucheto wenzvimbo yekutakura.
Kugoverwa kwekumanikidzwa mugomba — kwakakwira pedyo nenzvimbo dzinoiswa zvinhu, kwakaderera pedyo nenzvimbo yekubuda — kunogadzira simba rekusimudza rinotsigira huremu hwengoro (mumamiriro akatwasuka) kana mutoro wakaiswa. Sezvo gomba richiderera (semuenzaniso, kana ngoro ikatsveyama zvishoma pasi pemutoro), kuramba kuyerera kunowedzera, kumanikidzwa kunokwira, uye simba rekudzoreredza rinowedzera — zvichigadzira sisitimu inozvigadzirisa. Kusiyana neizvi, kana gomba rikawedzera, kumanikidzwa kunodonha uye bearing inova shoma.
Mhedzisiro huru yerutsigiro urwu rwekutakura zvinhu pasina kubata ndeyekubvisa zvachose kukweshana kwakasimba uye kutsvedza. Danho rekutakura mweya rakagadzirwa zvakanaka rine kukweshana kwakasimba kusingayereki — zviri pachena kuti hapana kana simba rakawanda riri mukati mekugadzirisa kwemasimba akawanda. Hunhu uhwu hunotsanangurwa sekushaikwa kwe "stiction" — chiitiko chekutsvedza kwestick-slip apo kukweshana kwakasimba (kwakakwirira kupfuura kinetic friction) kunofanira kukundwa kuti kutange kufamba, zvichikonzera kukweshana kunokanganisa nzvimbo inotevera.
Nei Kufamba Kusina Kumanikidzwa Kuchikosha Pakuisa Nzvimbo Yakarurama
Muchikamu chekugara chinofambiswa nebhora-sikuruu kana leadscrew-driven-driven positioning stage chine rolling element bearings, stiction idambudziko guru pakudzokororwa kwenzvimbo. Kana sisitimu yekudzora nzvimbo ichiraira kufamba kudiki, dhiraivha inofanira kutanga yakunda static friction isati yafamba zvachose. Izvi zvinoreva kuti nzvimbo yakarairwa nenzvimbo chaiyo hazvina kufanana pahukuru hudiki hwematanho - danho "rinonamira" uye rozo "kutsvedza," richidarika nzvimbo yakarairwa isati yagadzikana.
Izvi zvinoderedza muganho wehukuru hwematanho uye bandwidth yekuisa. Mumasisitimu eservo, stiction inokonzera limit cycling - mamiriro apo position control loop inoramba ichitarisa nzvimbo yakarairwa, isingakwanise kugadzikana kusvika padanho rakagadzikana nekuti chero kufamba kwekururamisa kunoda kukunda stiction, iyo inozotumira danho kupfuura chinangwa.
Mabheyaringi emhepo anobvisa zvachose kudhonzwa. Ngoro inoyangarara pafirimu remhepo rinoenderera mberi, uye chero simba diki rinoshandiswa munzira yekufamba rinoburitsa kufamba kwakaenzana. Izvi zvinoreva kuti:
- Kuisa nanometer-level kunogoneka uchishandisa nzira dzakakodzera dzekutyaira (linear motors, piezoelectric actuators, kana voice-coil actuators) pasina muganho wakaderera pahukuru hwematanho hunokonzerwa nekumanikidzwa.
- Nguva yekugadzirisa zvinhu yakadzikira zvikuru nekuti nzira yekudzora zvinhu haisi kurwisa mafambiro ese.
- Kudzokororwa kwacho kunogumira zvakanyanya nekugadziriswa kwe encoder uye mhedzisiro yekupisa kwete nekusiyana kwekukweshana
Kune semiconductor photolithography, apo wafer stage inofanira kutsika panzvimbo yega yega ye die ne sub-nanometer repeatable pa throughputs yemazana ematanho pasekondi, hunhu uhwu hunokosha. Hapana imwe tekinoroji ye bearing parizvino inopa mashandiro akafanana pachiyero chinodiwa.
Nzvimbo yeGranite Guide: Kugonesa Kushanda Kwemhepo
Bearing yemhepo inongofanana nepamusoro payo. Mukana wefirimu remhepo we5–15 μm hausi wekutsungirira pakukombama kwenzvimbo yekutungamira - ndiyo nzvimbo yese yekushanda inosanganisira zvese zvinobva mukusiyana. Nzvimbo yekutungamira pachayo inofanira kunge yakapfava uye yakati sandara kupfuura mukaha uyu kuti bearing yemhepo ishande nemazvo.
Zvinodiwa paKupedza Pamusoro (Kuomarara)
Kuomarara kwenzvimbo inotungamira kunofanira kunge kuri chikamu chidiki chemukana wemhepo.pamusoro pegwaraneRa roughness ye0.4 μm (nzvimbo yakagadzirwa zvakanaka) yaizoratidza kusiyana kwehurefu hwenzvimbo kwakafanana nechikamu chakakosha chemukana wemhepo, zvichigadzira kushanduka-shanduka kwekumanikidzwa kunoshandura zvakananga kuita ruzha rwekuisa panzvimbo pangoro.
Nzvimbo dzinoshandiswa kugadzira granite dzakagadzirwa nemazvo pakushandisa mabheyaringi emhepo dzakasungirirwa paRa ye0.02–0.1 μm (20–100 nm) — zvichienderana nekupedzwa kwegirazi. Kuwana magiredhi aya ekukombama pagranite kunoda matekiniki ekugadzira magiraidhi ane hunyanzvi, mabrasive emhando yepamusoro, uye vashandi vane hunyanzvi vanonzwisisa mashandiro ekubvisa zvinhu pamwe nemaitiro ekugadzira girazi regranite panguva yekupeta magiraidhi.
Kuoma kwegranite kwakakosha pano: dombo rakaomarara, rakakora (rakaita segranite nhema yepamusoro ine density ≈ 3,100 kg/m³) rinogona kupetwa kuti rive rakaomarara kupfuura granite grey kana marble yakapfava, nekuti chimiro chayo chekristaro chakapfava, chakabatana zvakanyanya hachiburitse zvidimbu zvezviyo zvinokwenya pamusoro panguva yekupetwa zvakanaka. Ichi ndicho chimwe chezvikonzero zvikuru zvehunyanzvi nei kusarudzwa kwezvinhu kuchikosha kune nzvimbo dzinotungamira mhepo, kwete chete kune global flatness plate.
Zvinodiwa zveKupfava uye Kururama
Kunze kwekuomarara kwenzvimbo, nzvimbo dzinotungamira mhepo dzinofanira kusangana nezvinodiwa zvakasimba zvekusatsetseka. Kutakurwa kwechikamu chekutakura mhepo "kunoverenga" nzvimbo inotungamira - kurongeka kwayo panzvimbo imwe neimwe pakufamba kunotsanangurwa nechimiro chenzvimbo inotungamira. Chero kutsauka kubva pakusatsetseka kwakakodzera (mudivi raZ) kana kutwasuka (mudivi rakanangana nekufamba, mukati meXY plane) kwenzvimbo inotungamira kunodzokororwa sechikanganiso chinoenderana chekufamba kwengoro.
Ichi ndicho chiitiko chinozivikanwa seAbbe error (kana sine error): kana nzvimbo yekutungamira ine slope error yeθ radians, uye nzvimbo inonyanya kufarirwa pangoro iri kure neL kubva panzvimbo yekutungamira, mhedzisiro yekumira kwedivi iL × sin(θ) ≈ L × θ yemakona madiki. Kune ngoro uko measurement encoder nechikamu chiri kuyerwa zvakaparadzaniswa ne100mm munzira yakatwasuka, mhedzisiro yekumira kwedivi ye1 arcsecond inokonzera position error yeinenge 0.48 μm.
Kuderedza mhedzisiro iyi kunoda nzvimbo dzinotungamira dzine zvikanganiso zvekutwasuka mu arcsecond range kana pasi, pamusoro pehurefu hwese hwekufamba kwechikamu. Kune nhanho yekufamba ye500mm, izvi zvinoenderana nekusiyana kwehurefu hwema micrometer mashoma kana pasi pahurefu hwe granite guide. Kuwana uye kusimbisa nhanho iyi yekutwasuka kunoda matekiniki ekugwamba nemazvo, kuyera nekungwarira nemagetsi uye laser interferometers, uye nzira dzekugadzirisa dzakafanana nedzinoshandiswa pakugwamba pamusoro peplate.
Kupinda-pinda uye Kupinda Kwemhepo
Imwe pfuma yegranite inonyanya kukosha pakushandiswa kwemhepo inotakura mweya asi isingawanzo kutaurwa nezvayo mumabhuku akawanda ndeyekudonha kwemvura. Kana nzvimbo yegranite inotungamira ine maburi akavhurika - maburi madiki anobatanidza mukati medombo nepamusoro - mweya wakamanikidzwa uri mugomba rekutakura unogona kudonhedza mvura mudombo pane kuyerera zvakaenzana kuenda kunobuda bearing. Izvi zvinogadzira kupararira kwesimba kusina kuenzana, zvinowedzera kushandiswa kwemhepo, uye mune zviitiko zvakanyanya zvinogona kukonzera kuti bearing iparare munzvimbo iyoyo.
Granite nhema ine density yakakura, ine porosity yakaderera zvikuru inokonzerwa nechimiro chayo chakakora chekristaro, haina mukana wekuwana dambudziko iri zvakanyanya kupfuura granite grey ine density yakaderera. Density inosvika 3,100 kg/m³ — zvichienzaniswa negranite grey yakajairika iri pa2,600–2,700 kg/m³ — inoratidza chidimbu chidiki che void muchinhu chacho. Kune nzvimbo dzinotungamira mhepo, musiyano uyu muporosity unokanganisa zvakananga mashandiro ebheringi uye kugadzikana kwayo.
Mukushandiswa kwakakosha, mamwe marapiro pamusoro (vacuum impregnation ne epoxy, kana nzira dzakagadzirwa dzekuputira dzinovhara maburi epamusoro) dzinogona kushandiswa. Zvisinei, kutanga nezvinhu zvine maburi mashoma kunoderedza kudiwa kwemarapiro akadaro pamwe nenjodzi yematambudziko ekushanda ane chekuita nemaburi.
Magungano eGranite Air Bearing: Kufunga Nezvekugadzira
Danho rakakwana rekutakura mweya pagranite rinosanganisira zvinhu zvakawanda zveinjiniya kunze kwenzvimbo yekutungamira pachayo:
Dhizaini Yekurodha Pamberi
Mabheyaringi emhepo anofanira kuiswa zvinhu kare - zvichireva kuti simba rekugadzirisa zvinhu rinofanira kurwisa chero katsika kekusimuka kubva pamusoro pegwara. Pasina kuisa zvinhu kare, kari rinongoyangarara kubva pamusoro kana paine dambudziko rekukwira kumusoro. Kuisa zvinhu kare kunoitwa neimwe yenzira nhatu:
Mabheyaringi emhepo akasiyana anoshandisa nzvimbo yechipiri yekutakura mweya iri kune rumwe rutivi rwenzira yekutungamira kana nzvimbo yakati sandara, zvichigadzira masimba ekumanikidza anomanikidza ngoro kuenda kunzira uku ichiri kuchengetedza kupatsanurwa kwefirimu remhepo kumativi ese. Uku ndiko kurongeka kwakajairika kwematanho emutsetse chaiwo.
Mabheringi ane vacuum preloaded anoshandisa nzvimbo yepakati ye vacuum mukati mebearing face, yakakomberedzwa nenzvimbo ine pressure. Simba re net ndiro musiyano uripo pakati pesimba rekusimudzira nzvimbo ine pressure nekukwezva nzvimbo ine vacuum, zvichikonzera kuti net preload iende pamusoro peguide.
Magnetic preload inoshandisa simba rinokwezva riri pakati pemagineti anogara ari mungoro negwara rekutungamira re ferromagnetic kudhonza ngoro kuenda pamusoro. Maitiro aya anoda kuti gwara rekutungamira re granite rive nezvinhu zvesimbi kana zvesimbi, izvo zvinoita kuti dhizaini yacho iome asi zvinogona kugadzira magungano ekutakura zvinhu akamanikana.
Kupa Mhepo uye Kusefa
Matanho ekutakura mhepo anoda kuti mhepo yakachena, yakaoma, isina zvidimbu zvidiki irambe ichiwanikwa pamhepo yakamanikidzwa — kazhinji 0.4–0.6 MPa. Kusvibiswa kwemhepo nemafuta, utsi hwemvura, kana zvidimbu zvidiki chimwe chezvinhu zvinowanzo kukonzera kutadza kushanda kwemhepo. Kusvibiswa kwemafuta kunofukidza nzvimbo dzekutakura, zvichichinja maitiro avo uye kunyorova; kunyorova kwemvura kunoita kuti kumanikidzwa kuenderane; zvidimbu zvidiki zvinogona kuvhara nzvimbo yekutakura uye kukanda mativi ese ari maviri engoro nepamusoro pegranite guide.
Munzvimbo dzekugadzira mhepo dzakaita semiconductor, mhando yemhepo inowanzo tariswa zvakanaka nezvinodiwa nefekitori. Mune dzimwe nzvimbo dzemaindasitiri, kungwarira kunofanirwa kuitwa kuti mhepo isvinwe zvakanaka uye iome kusvika padanho rekushanda.
Mhedzisiro yekupisa pafirimu remhepo
Kusimba kwemhepo kunochinja nekupisa — inenge 2% padhigirii Celsius pakupisa kwemumba. Kuchinja kukuru kwekupisa mumhepo inopihwa (kubva mukamuri recompressor kuenda kuimba yekushambidzira inodzorwa nekupisa, semuenzaniso) kunochinja kuomarara kwemabheya uye simba rekusimudza. Mukushandiswa kwakanyatsojeka, tembiricha yemhepo inofanira kudzorwa pamwe nekumanikidzwa.
Nzvimbo yekuisa mabheyaringi pachayo inogadzira kupisa kudiki asi kusina zero kuburikidza nekuchekwa kwefirimu remhepo. Kune matanho ekumhanya kukuru, sosi iyi yekupisa inofanira kuverengerwa mumuenzaniso wekupisa wesystem kudzivirira kukwira kwekushisa kusingatarisirwi mugranite kana chimiro chengoro.
Kuyera uye Kusimbiswa kweKushanda kweChikamu cheMhepo Inotakura
Mushure mekuungana, danho rekuisa mweya pagranite rinofanira kutsanangurwa kuti rionekwe kuti rinosangana nezvinodiwa zvaro. Zvinhu zvakakosha zvekuyera zvinosanganisira:
Kudzokororwa kwenzvimbo — kunoyerwa nekuraira nhanho kusvika panzvimbo dzakatevedzana uye kunyora nzvimbo chaidzo uchishandisa linear encoder ine resolution yepamusoro kana laser interferometer. Kudzokororwa kwenzvimbo mbiri (kusvika kubva kumativi ese) kunoedza hysteresis.
Kururama kwekufamba — kunoyerwa nekuisa mupendero wakatwasuka (kazhinji, pachawo chiratidzo chegranite chaiyo) padivi penzira yekufamba uye kushandisa electronic gauge kuyera kutsauka kwengoro kubva pamutsetse wakatwasuka painopfuura nepakati payo yese.
Zvikanganiso zveAngular (pitch, roll, yaw) — zvinoyerwa uchishandisa autocollimators kana mazinga emagetsi akaiswa pangoro, zvichiona shanduko diki dzeAngular mukutungamira kwengoro painofamba.
Kushandiswa kwemhepo uye kuomarara kwebheyaringi — kunoyerwa nekuisa mitoro inozivikanwa paberiya uye kuyera shanduko yemukana unobuda (kubva pakuverenga kwe encoder), zvichibvumira kuomarara kwebheyaringi (simba pakufamba kweyuniti) kuti kuverengwe.
Kuyera uku, kunoitwa nezvishandiso zvine resolution yakakodzera uye kutevedza kunotevedzana, zvinopa hwaro hwekushanda hunogona kuchengetedzwa uye kusimbiswazve mukati mehupenyu hwebasa rayo.
Mashandisirwo Akakosha Pakuiswa Matanda Emhepo eGranite
Kusanganiswa kwemafambiro emhepo ine simba uye nzvimbo dzinotungamira granite kunoonekwa chero kupi uko fizikisi yekushandiswa inoda hunhu hwadzo hwakabatana:
Kuongorora uye lithography yeSemiconductor wafer — Zvatokurukurwa zvakadzama; mashandisirwo ekuenzanisa akatungamira kukura kwetekinoroji kusvika pari zvino.
Kuboorera kwePCB kunomhanya zvikuru — Michina yekuboorera ine masipinde akawanda inofanira kuisa mabhii akawanda panguva imwe chete pamusoro pePCB panel inoshandisa mabhesi egranite nemasiraidhi ane mhepo kuti iwane musanganiswa wekumhanya, kururama, uye kugadzikana kwenguva refu kunodiwa.
Optical profilometry uye kuongorora pamusoro — Zvishandiso zvinoyera chimiro chepamusoro pa sub-nanometer resolution zvinofanirwa kuongorora probe yavo yekuyera pamusoro pechikamu nekufamba kwakapfava uye kusingadengenyeki zvakanyanya. Mabheringi emhepo ari pamusoro pegranite guide anopa mhando yekufamba kunodiwa.
Kugadzira laser nemazvo — Femtosecond uye picosecond laser systems dzinoshandiswa kubvisa zvinhu nemazvo — mukushandiswa kubva kuophthalmology kuenda kuma microelectronics kusvika kuzvinhu zvemuchadenga — zvinoda matanho ekuisa zvinhu nemazvo ne nanometer-level akarurama uye kufamba kwakapfava, kusina kumanikidzwa kuti uwane hunhu hunodiwa hwe ablation.
Kuenzanisa skero yemutsetse — Masisitimu ekugadzirisa encoders dzakanyatsojeka uye masisitimu einterferometer elaser anofanirwa kufambisa chinhu chekutarisa chine mhando yekufamba zvakanaka zvekuti kufamba kwacho pachako hakuganhurire kururama kwekuenzanisa. Matanho ekubata mhepo panzvimbo dzakanyatsojeka dzegranite ndiyo sarudzo yakajairika yemasisitimu ekugadzirisa anonyanya kuomera.
Mhedziso: Firimu Remhepo neDombo
Tekinoroji yekubata mhepo negranite chaiyo, mupfungwa chaiyo yeinjiniya, zvakagadzirwa kuti zvienderane. Fizikisi yekushanda kwekubata mhepo inoisa zvinodiwa zvakanyanya pakukombama kwenzvimbo inotungamira, kutsetseka, uye hunhu hwezvinhu - zvinoda kuti granite chaiyo, kana yagadzirwa uye yagadziriswa kusvika padanho rakakodzera, ive panzvimbo yakanaka yekusangana nayo. Uye mabheyaringi emhepo, nekubvisa kukweshana uye kupfeka kwekubata, inobvumira nanometer-scale surface finish yegranite chaiyo kushandiswa nguva dzose pasina kuora.
Mugumisiro wacho tekinoroji yekuisa zvinhu panzvimbo inokwanisa kuwana mhando yekufamba - inoyerwa nema nanometers - iyo yaizoita seyakanaka kune mainjiniya echizvarwa chakapfuura. Kuti tekinoroji iyi yakavakirwa, mumuviri uye mupfungwa, pahwaro hwematombo ekare, ndeimwe yezvishamiso zvepamusoro zveinjiniya yemazuva ano yekunyatsojeka.
Nguva yekutumira: Chikumi-26-2026