A cikin yaren injiniyan injiniya, "rashin damuwa" manufa ce ta ka'ida - wani abu da ke bayyana a cikin maganganun matsalolin littattafai amma ba a taɓa cimma shi gaba ɗaya a duniyar zahiri ba. Duk da haka a cikin matakan daidaiton matsayi waɗanda ke motsa wafers na silicon a cikin injunan lithography, tsarin laser mai rubutu kai tsaye, kayan haƙo PCB mai sauri, da dandamalin dubawa na sikelin nanometer, abubuwan motsi suna kusantar wannan manufa sosai. Suna yin hakan ta hanyar fasaha da ake kira ɗaukar iska, kuma saman da wannan fim ɗin hawa iska kusan koyaushe granite ne daidai.
Fahimtar fasahar ɗaukar iska — kimiyyar lissafi, buƙatunta, da iyakokinta — ba za a iya raba ta da fahimtar dalilin da yasa granite shine kayan da aka fi so don saman jagorar ɗaukar iska. Fasaha biyu suna da alaƙa: ɗaukar iska yana ba da damar amfani da ingancin saman granite daidai, kuma granite yana ba da damar ɗaukar iska don cimma daidaito da daidaiton matsayi wanda ya sa ya cancanci amfani da su tun farko.
Ilimin Fizik na Aikin Bearing na Iska
Nau'in bearing na al'ada - bearing na ball ko bearing na roller - yana tallafawa nauyin motsi ta hanyar hulɗar Hertzian: ƙwallan ko birgima suna matsawa kan hanyoyin tsere, suna canzawa kaɗan a ƙarƙashin kaya kuma suna watsa ƙarfi ta cikin ƙaramin yanki na hulɗar amma mara sifili. Wannan hulɗar tana haifar da gogayya, tana gabatar da lalacewa, kuma tana ƙirƙirar hanyar injiniya wacce za a iya watsa girgiza daga bearing zuwa tsarin da aka tallafa.
Bearing na iska yana maye gurbin wannan hulɗa mai ƙarfi da siririn fim na iskar gas mai matsa lamba - yawanci iska mai tsabta da bushewa, kodayake ana amfani da nitrogen a aikace inda danshi na iska ke da matsala. Ana raba abin da ke motsawa ("zamiya" ko "karya") daga saman jagora ta hanyar gibin da yawanci faɗin micromita 5-15. Ana samar da iska mai matsa ta ƙananan ramuka ko saman ramuka a fuskar zamiya, tana kwarara zuwa wannan gibin, sannan ta fita a gefunan yankin ɗaukar kaya.
Rarraba matsin lamba a cikin rata - mafi girma kusa da hanyoyin samar da kayayyaki, ƙasa kusa da hanyar fita - yana haifar da ƙarfin ɗagawa ta yanar gizo wanda ke tallafawa nauyin karusa (a cikin tsari na kwance) ko nauyin da aka yi amfani da shi. Yayin da rata ke raguwa (misali, idan karusa ta ɗan karkata kaɗan a ƙarƙashin kaya), juriyar kwarara tana ƙaruwa, matsin lamba yana ƙaruwa, kuma ƙarfin maidowa yana ƙaruwa - yana ƙirƙirar tsarin daidaita kansa. Akasin haka, idan rata ta ƙaru, matsin lamba yana raguwa kuma ɗaukar nauyin yana raguwa.
Babban sakamakon wannan tallafin kaya mara taɓawa shine kusan kawar da gogayya mai tsayi da zamiya gaba ɗaya. Tsarin ɗaukar iska mai kyau yana da gogayya mai tsayi wanda ba za a iya aunawa ba - a zahiri sifili ne a cikin ƙudurin yawancin tsarin auna ƙarfi. An bayyana wannan siffa a matsayin rashin "matsayi" - abin da ke faruwa a kan sanda inda gogayya mai tsayi (fiye da gogayya mai motsi) dole ne a shawo kansa don fara motsi, wanda ke haifar da girgiza wanda ke damun matsayi na gaba.
Me Yasa Motsi Ba Tare Da Ƙarfi Ba Yana Da Muhimmanci Ga Matsayi Mai Daidaito
A cikin matakin matsayi na yau da kullun na ƙwallo ko kuma wanda ke da madaidaitan bearings na abubuwan birgima, stiction babban ƙayyadadden matsayi ne akan maimaitawa. Lokacin da tsarin kula da matsayi ya ba da umarnin ƙaramin motsi, dole ne tsarin tuƙi ya fara shawo kan gogayya mai tsauri kafin karusar ta motsa kwata-kwata. Wannan yana nufin matsayin da aka umarta da matsayin ainihin ba iri ɗaya ba ne a ƙananan girman matakai - matakin "sanduna" sannan "zamewa," yana wuce matsayin da aka umarta kafin ya daidaita.
Wannan tasirin yana sanya ƙarancin iyaka a aikace akan girman mataki da kuma girman bandwidth ɗin da aka sanya. A cikin tsarin servo, stiction yana haifar da iyaka zagayowar - yanayi inda madaurin sarrafa matsayi ke farautar ci gaba a kusa da matsayin da aka umarta, ba zai iya daidaita zuwa ƙimar da ta dace ba saboda duk wani motsi na gyara yana buƙatar shawo kan stira, wanda daga nan zai aika matakin ya wuce abin da aka nufa.
Bearings na iska suna kawar da matsi gaba ɗaya. Kekunan suna shawagi a kan fim ɗin iska mai ci gaba, kuma duk wani ƙaramin ƙarfi da aka yi amfani da shi a alkiblar motsi yana haifar da motsi daidai gwargwado. Wannan yana nufin cewa:
- Ana iya cimma matsayin matakin nanometer ta amfani da hanyoyin tuƙi masu dacewa (injinan layi, masu kunna piezoelectric, ko masu kunna muryoyi) ba tare da ƙarancin iyaka akan girman matakin da aka sanya ba.
- Lokacin daidaitawa yana raguwa sosai saboda madaurin sarrafawa baya fada da sharaɗi akan kowane motsi
- Maimaitawa yana iyakance ne musamman ta hanyar ƙudurin mai shigar da bayanai da tasirin zafi maimakon ta hanyar bambancin gogayya
Ga na'urar daukar hoto ta semiconductor, inda matakin wafer dole ne ya taka zuwa kowane matsayi na mutu tare da maimaitawa na sub-nanometer a cikin hanyar da ta wuce ɗaruruwan matakai a cikin daƙiƙa, waɗannan halaye suna da mahimmanci. Babu wata fasahar bearing da ke ba da aiki iri ɗaya a sikelin da ake buƙata a halin yanzu.
Jagorar Dutse: Yana Bada Aikin Haɗa Iska
Bearing na iska yana da kyau kamar saman da yake hawa. Gibin fim ɗin iska na 5-15 μm ba shine juriya ga ƙaiƙayin saman jagora ba - shine cikakken izinin aiki gami da duk hanyoyin bambance-bambance. Dole ne saman jagorar kanta ya kasance mai santsi da santsi fiye da wannan gibin domin bearing ɗin iska ya yi aiki yadda ya kamata.
Bukatun Gamawa (Tsauri)
Dole ne ƙaiƙayin saman jagorar ya zama ƙaramin ɓangare na gibin iska.saman jagoraTare da ƙaiƙayin Ra na 0.4 μm (saman injin da aka yi da injin) zai gabatar da bambance-bambancen tsayi na gida wanda ya yi daidai da babban ɓangaren gibin iska, yana haifar da canjin matsin lamba mai rikitarwa wanda ke fassara kai tsaye zuwa sautin sanyawa a kan karusar.
Ana sanya saman jagorar granite mai daidaito don amfani da iska zuwa ƙimar Ra na 0.02–0.1 μm (20–100 nm) - wanda ya dace da kammalawa mai inganci na madubi. Samun waɗannan ƙimar ƙazanta akan granite yana buƙatar dabarun lapping na musamman, gogewa masu inganci, da ƙwararrun masu aiki waɗanda suka fahimci hanyoyin cire kayan da kuma halayen ƙaramin tsarin crystalline na granite yayin lapping mai kyau.
Taurin dutse yana da mahimmanci kai tsaye a nan: dutse mai tauri da kauri (kamar dutse mai launin baƙi mai yawa ≈ 3,100 kg/m³) za a iya lanƙwasa shi zuwa ƙasa da tauri fiye da dutse mai launin toka mai laushi ko marmara, saboda tsarin lu'ulu'u mai kyau da aka haɗa sosai ba ya fitar da gutsuttsuran hatsi da ke karce saman yayin lanƙwasa mai laushi. Wannan yana ɗaya daga cikin mahimman dalilan fasaha da ya sa zaɓin abu yake da mahimmanci ga saman jagorar ɗaukar iska, ba kawai don ƙayyadaddun faɗin faɗin farantin saman ba.
Bukatun Lanƙwasa da Daidaito
Bayan ƙaiƙayin saman, saman jagorar ɗaukar iska dole ne ya cika ƙa'idodin lanƙwasa. Jigilar matakin ɗaukar iska yana "karatu" saman jagorar - yanayinsa a kowane wuri a kan tafiya ana ƙaddara shi ta hanyar siffa ta gida ta saman jagorar. Duk wani karkacewa daga madaidaicin lanƙwasa (a cikin alkiblar Z) ko madaidaiciya (a cikin alkiblar da ke daidai da motsi, a cikin jirgin XY) na saman jagorar ana sake maimaita shi azaman kuskuren motsi mai dacewa na karusar.
Wannan shine abin da aka sani da kuskuren Abbe (ko kuskuren sine): idan saman jagora yana da kuskuren gangara na θ radians, kuma wurin da ke sha'awa akan karusar yana da nisan L daga saman jagora, kuskuren matsayin gefe da ya haifar shine L × sin(θ) ≈ L × θ ga ƙananan kusurwoyi. Ga karusar inda aka raba ma'aunin ma'auni da ɓangaren da ake aunawa da 100mm a tsaye, kuskuren gangara saman jagora na 1 arcsecond yana haifar da kuskuren matsayi na kimanin 0.48 μm.
Rage wannan tasirin yana buƙatar saman jagora tare da kurakuran madaidaiciya a cikin kewayon arcsecond ko ƙasa da haka, a kan cikakken tsawon tafiyar mataki. Ga matakin tafiya na 500mm, wannan ya yi daidai da bambancin tsayi na 'yan micrometers ko ƙasa da haka a cikin cikakken tsawon jagorar granite. Cimma da tabbatar da wannan matakin madaidaiciya yana buƙatar dabarun tsallake daidai, aunawa da kyau tare da matakan lantarki da na'urorin auna laser, da dabarun gyara gogewa kamar waɗanda ake amfani da su don jujjuya farantin saman.
Porosity da Canzawar Iska
Ɗaya daga cikin abubuwan da dutse ke da shi wanda yake da matuƙar muhimmanci ga aikace-aikacen ɗaukar iska amma ba a cika tattauna su a cikin wallafe-wallafen gabaɗaya ba shine porosity. Idan saman jagorar dutse yana da ramuka a buɗe - ƙananan ramuka waɗanda ke haɗa cikin dutsen da saman - iskar da ke matsewa a cikin ramin ɗaukar iska na iya zubewa cikin dutsen maimakon gudana daidai gwargwado zuwa hanyar fita daga wurin ɗaukar iska. Wannan yana haifar da rarraba matsin lamba mara daidaituwa, yana ƙara yawan amfani da iska, kuma a cikin mawuyacin hali na iya sa bearing ya ruguje a gida.
Granite baƙi mai yawan yawa, tare da ƙarancin ramukansa sakamakon tsarin lu'ulu'u mai yawa, ba shi da sauƙin kamuwa da wannan matsala kamar granites masu ƙarancin yawa. Yawan kusan kg 3,100/m³ - idan aka kwatanta da granite launin toka na yau da kullun a kilo 2,600–2,700/m³ - yana nuna ƙarancin rami a cikin kayan. Ga saman jagorar ɗaukar iska, wannan bambancin ramuka kai tsaye yana shafar aikin ɗaukar bearing da kwanciyar hankali.
A cikin aikace-aikacen da suka fi muhimmanci, ana iya amfani da ƙarin hanyoyin magance matsalar saman (rufe bututun da epoxy, ko hanyoyin lapping na musamman waɗanda ke rufe ramukan saman). Duk da haka, farawa da kayan da ba su da ramuka suna rage buƙatar irin waɗannan magunguna da kuma haɗarin matsalolin aiki da suka shafi ramuka.
Taro na Gilashin Iska na Granite: Abubuwan da Zane Ya Yi La'akari da su
Cikakken matakin ɗaukar iska a kan dutse ya ƙunshi la'akari da injiniya da yawa fiye da saman jagorar kanta:
Tsarin Lodawa Kafin Lokaci
Dole ne a riga an ɗora bearings na iska - ma'ana ƙarfin maidowa dole ne ya yi tsayayya da duk wani hali na ɗagawa daga saman jagorar. Ba tare da an riga an ɗora ba, karusar za ta yi iyo kawai daga saman a ƙarƙashin kowace matsala ta sama. Ana samun ƙarin lodi ta hanyar ɗaya daga cikin hanyoyi uku:
Bearings na iska masu adawa suna amfani da saman ɗaukar iska na biyu a gefen kishiyar layin jagora ko saman lebur, suna ƙirƙirar ƙarfin matsin lamba masu adawa waɗanda ke tilasta wa karusar ta shiga jagorar yayin da har yanzu ke kiyaye rabuwar fim ɗin iska a ɓangarorin biyu. Wannan shine tsari mafi yawan gama gari don matakan layi masu daidaito.
Bearings ɗin injin da aka riga aka ɗora wa injin suna amfani da yankin injin da ke tsakiyar ɓangaren injin da ke cikin fuskar injin, wanda ke kewaye da yankin injin da aka matsa. Ƙarfin injin shine bambanci tsakanin ƙarfin ɗagawa na yankin da aka matsa da kuma jan hankalin yankin injin, wanda ke haifar da ƙarin kaya zuwa saman jagorar.
Ana amfani da ƙarfin jan hankali tsakanin maganadisu na dindindin a cikin karusar da kuma layin jagora na ferromagnetic don jawo karusar zuwa saman. Wannan hanyar tana buƙatar layin jagora na granite ya haɗa da abubuwan ƙarfe ko ƙarfe, wanda ke rikitar da ƙirar amma yana iya samar da ƙananan haɗuwa na bearing.
Samar da Iska da Tacewa
Matakan ɗaukar iska suna buƙatar ci gaba da samar da iska mai tsabta, busasshe, mara ƙwayoyin cuta a matsin lamba da aka tsara - yawanci 0.4–0.6 MPa. Gurɓatar iskar da iskar da ke amfani da iskar mai, tururin ruwa, ko ƙwayoyin cuta masu ƙarfi yana ɗaya daga cikin abubuwan da ke haifar da gazawar ɗaukar iskar. Gurɓatar mai tana shafa saman ɗaukar iskar, tana canza yanayinsu da kuma danshi; danshi a cikin ruwa yana haifar da canjin matsin lamba; ƙwayoyin cuta masu ƙarfi na iya ɗaure gibin ɗaukar iskar kuma su nuna fuskar ɗaukar kaya da kuma saman jagorar granite.
A cikin yanayin masana'antar semiconductor, ingancin samar da iska gabaɗaya ana sarrafa shi sosai ta hanyar ƙa'idodin wurare. A wasu muhallin masana'antu, dole ne a yi taka tsantsan don samar da tacewa da bushewa mai dacewa a lokacin samar da iska zuwa matakin.
Tasirin Zafi akan Fim ɗin Iska
Dankowar iska tana canzawa tare da zafin jiki - kimanin kashi 2% a kowace digiri Celsius a zafin jiki na ɗaki. Babban canjin zafin jiki a cikin samar da iska (daga ɗakin matsewa zuwa ɗakin tsaftacewa mai sarrafa zafin jiki, misali) yana canza taurin ɗaukar kaya da ƙarfin ɗagawa. A cikin aikace-aikacen daidai, ya kamata a daidaita zafin samar da iska ban da matsin lamba.
Gibin da ke ɗauke da shi da kansa yana samar da ƙaramin zafi amma mara sifili ta hanyar yankewar fim ɗin iska. Don matakai masu sauri, dole ne a yi la'akari da wannan tushen zafi a cikin samfurin zafin tsarin don guje wa yanayin zafi da ba a zata ba a cikin granite ko tsarin karusa.
Aunawa da Tabbatar da Aikin Matsayin Hawan Iska
Bayan an haɗa shi, dole ne a siffanta matakin ɗaukar iska a kan dutse don tabbatar da cewa ya cika ƙa'idodin aikinsa. Mahimman sigogin da za a auna sun haɗa da:
Maimaita matsayi - ana auna shi ta hanyar umurta matakin zuwa jerin wurare da aka nufa da kuma yin rikodin ainihin matsayin da na'urar sanya layi mai ƙuduri mai girma ko kuma na'urar aunawa ta laser. Maimaita hanya biyu (yana kusantowa daga duka hanyoyi) yana gwada hysteresis.
Daidaiton tafiya - ana auna shi ta hanyar sanya madaidaicin gefen madaidaiciya (sau da yawa, kanta ma'aunin dutse mai daidaito) tare da hanyar tafiya da kuma amfani da ma'aunin lantarki don auna karkacewar karusar daga layi madaidaiciya yayin da take ratsawa gaba ɗaya.
Kurakuran kusurwa (faɗi, birgima, yaw) - ana auna su ta amfani da autocollimators ko matakan lantarki da aka ɗora a kan karusar, suna gano ƙananan canje-canje a yanayin kusurwoyi yayin da suke motsi.
Amfani da iska da kuma taurin ɗaukar kaya — ana auna su ta hanyar amfani da kayan da aka sani a cikin karusar da kuma auna canjin gibin da ya haifar (daga karatun lambar sirri), wanda ke ba da damar ƙididdige taurin ɗaukar kaya (ƙarfin da ke motsawa a kowane raka'a).
Waɗannan ma'aunai, waɗanda aka yi su da kayan aikin ƙuduri masu dacewa da kuma daidaita su, suna samar da tushen aikin da za a iya ci gaba da shi da kuma sake tabbatar da shi a tsawon rayuwar aikinsa.
Aikace-aikace Inda Matakan Hawan Dutse na Granite Suna da Muhimmanci
Haɗin motsin ɗaukar iska da saman jagorar granite yana bayyana duk inda kimiyyar aikace-aikacen ta buƙaci haɗin halayensu:
Duba da kuma lithography na Semiconductor - An riga an tattauna sosai; aikace-aikacen ma'auni wanda ya jagoranci ci gaban fasahar zuwa ga yanayin da take ciki a yanzu.
Hako PCB mai sauri — Injinan hakowa masu yawa waɗanda dole ne su sanya guntun hakowa da yawa a lokaci guda a kan kwamitin PCB suna amfani da sansanonin granite da zamewar iska don cimma haɗin gudu, daidaito, da kwanciyar hankali na dogon lokaci da ake buƙata.
Na'urar tantancewa ta gani da kuma duba saman - Kayan aikin da ke auna siffar saman a ƙudurin ƙaramin nanometer dole ne su duba na'urar auna su a saman ɓangaren tare da motsi mai santsi da ƙarancin girgiza. Bearings na iska akan saman jagorar granite suna samar da ingancin motsi da ake buƙata.
Injin laser mai daidaito — tsarin laser na Femtosecond da picosecond da ake amfani da su don cire kayan daidai — a aikace-aikace daga ilimin ido zuwa microelectronics zuwa sassan sararin samaniya — suna buƙatar matakan matsayi tare da daidaiton matakin nanometer da motsi mai santsi, mara matsewa don cimma ingancin cirewar da ake buƙata.
Daidaita sikelin layi - Tsarin daidaitawa don daidaitattun masu shigar da lambobi na layi da tsarin interferometer na laser dole ne su motsa wani abu mai ma'ana wanda ingancin motsi ya isa sosai wanda motsi da kansa bai iyakance daidaiton daidaitawa ba. Matakan ɗaukar iska akan saman jagorar granite daidai sune zaɓin da aka saba amfani da shi don tsarin daidaitawa mafi wahala.
Kammalawa: Fim ɗin Iska da Dutse
Fasahar ɗaukar iska da granite daidai, a zahiri, an yi su ne don juna. Ilimin kimiyyar ɗaukar iska yana sanya buƙatu masu tsauri kan rashin kyawun saman jagora, lanƙwasa, da kuma kayan abu - yana buƙatar cewa granite daidai, idan aka samar da shi kuma aka sarrafa shi bisa ga ƙa'idodi masu dacewa, yana da kyakkyawan matsayi don cikawa. Kuma bearings na iska, ta hanyar kawar da gogayya da lalacewar hulɗa, yana ba da damar amfani da ƙarshen saman nanometer na granite daidaitacce akai-akai ba tare da lalacewa ba.
Sakamakon haka shine fasahar matsayi da za ta iya cimma ingancin motsi - wanda aka auna da nanometers - wanda zai yi kama da abin mamaki ga injiniyoyi na ƙarni na baya. Cewa wannan fasaha ta dogara, a zahiri da kuma a ra'ayi, akan harsashin dutse na da, yana ɗaya daga cikin abubuwan ban mamaki na injiniyan daidaito na zamani.
Lokacin Saƙo: Yuni-26-2026