Taushin sararin sama muhimmin ma'aunin fasaha ne wanda ke nuna kurakuran microgeometric na farfajiyar wani yanki kuma muhimmin abu ne wajen tantance ingancin saman. Zaɓin ƙaƙƙarfan saman yana da alaƙa kai tsaye zuwa ingancin samfur, rayuwar sabis, da farashin samarwa.
Akwai hanyoyi guda uku don zabar tarkacen saman sassa na inji: hanyar lissafi, hanyar gwaji, da hanyar kwatance. Hanyar kwatankwacin ana amfani da ita a ƙirar ɓangaren injina saboda sauƙi, saurinsa, da ingancinsa. Ana buƙatar isassun kayan tunani don aikace-aikacen hanyar kwatankwacin, kuma littattafan ƙirar injina suna ba da cikakkun bayanai da wallafe-wallafe. Maganar da aka fi amfani da ita ita ce taurin kai wanda yayi daidai da ajin haƙuri.
Gabaɗaya, sassan injina tare da ƙananan buƙatun juriya na girma suna da ƙananan ƙimar ƙarancin ƙasa, amma babu ƙayyadaddun alaƙar aiki tsakanin su. Misali, wasu sassa na inji, kamar hannuwa, kayan kida, kayan aikin tsafta, da injinan abinci, suna buƙatar filaye masu santsi tare da ƙimar ƙaƙƙarfan saman ƙasa, yayin da buƙatun haƙurinsu kaɗan ne. Yawanci, akwai ƙayyadaddun ma'amala tsakanin ma'aunin haƙuri da ƙimar ƙarancin ƙasa na sassa tare da buƙatun haƙuri mai girma.
Yawancin ɓangarorin inji suna ƙira littattafan ƙira da masana'anta monographs suna gabatar da dabarun ƙididdige ƙididdigewa don ƙaƙƙarfan yanayi da alaƙar juriyar juzu'i na sassan injina. Koyaya, ƙimar da ke cikin jerin abubuwan da aka bayar galibi sun bambanta, suna haifar da ruɗani ga waɗanda ba su san halin da ake ciki ba kuma suna ƙara wahalar zaɓin ƙarancin ƙasa don sassan injina.
A zahiri, nau'ikan injuna daban-daban suna da buƙatu daban-daban don ƙaƙƙarfan sassan sassansu, koda kuwa suna da juriya iri ɗaya. Wannan shi ne saboda kwanciyar hankali na dacewa. A cikin tsarin ƙira da masana'antu na sassa na inji, abubuwan da ake buƙata don kwanciyar hankali na mating da musayar sassa sun bambanta dangane da nau'in na'ura. Littattafan ƙirar kayan aikin injiniya da suka wanzu suna nuna manyan nau'ikan nau'ikan guda uku masu zuwa:
Ingantattun Injina:Wannan nau'in yana buƙatar babban kwanciyar hankali na dacewa kuma yana ba da umarni cewa iyakar lalacewa na sassan bai wuce 10% na ƙimar juriya ba, ko dai lokacin amfani ko bayan taro da yawa. Ana amfani da shi musamman a saman kayan aikin ma'auni, ma'auni, daidaitattun kayan aikin aunawa, da juzu'i na sassa masu mahimmanci kamar saman ciki na Silinda, babban jarida na kayan aikin injin daidai, da babban jarida na injin daidaitawa mai ban sha'awa. .
Injunan Daidaici na yau da kullun:Wannan rukunin yana da buƙatu mafi girma don kwanciyar hankalin dacewa kuma yana buƙatar cewa iyakar lalacewa na sassan bai wuce 25% na ƙimar haƙurin girma ba. Hakanan yana buƙatar shimfidar lamba da aka rufe da kyau kuma ana amfani dashi galibi a cikin kayan aikin injin, kayan aiki, da na'ura mai jujjuyawa don dacewa da saman, ramukan magudanar ruwa, da wuraren tuntuɓa tare da babban saurin motsi na dangi, irin su mating surface na zamewar bearings da. da gear hakori aiki surface.
Injin Gabaɗaya:Wannan nau'in yana buƙatar iyakar lalacewa na sassa bai wuce 50% na ƙimar juriyar juzu'i ba kuma baya haɗa da motsin dangi na farfajiyar lambacnc niƙa sassa. Ana amfani da shi don abubuwa kamar murfin akwatin, hannayen riga, saman aiki na saman, maɓallai, manyan hanyoyin da ke buƙatar dacewa ta kusa, da wuraren tuntuɓar juna tare da ƙananan saurin motsi na dangi, kamar ramukan maɓalli, bushings, da saman aiki tare da ramukan shaft na jan hankali. da masu ragewa.
Muna aiwatar da ƙididdigar ƙididdiga na ƙimar tebur daban-daban a cikin jagorar ƙirar injiniyoyi, muna canza tsohuwar ma'aunin ƙasa don ƙarancin ƙasa (GB1031-68) zuwa sabon ma'aunin ƙasa (GB1031-83) a cikin 1983 tare da la'akari da daidaitattun ISO na duniya. Muna ɗaukar sigogin kimantawa da aka fi so, wanda shine matsakaicin ƙimar karkatar da kimar kwane-kwane (Ra=(1/l)∫l0|y|dx). Ana amfani da jerin ƙimar farko na ƙimar da Ra ya fi so don samun alaƙa tsakanin ƙarancin saman Ra da juriyar juzu'i IT.
Darasi na 1: Ra≥1.6 Ra≤0.008×IT
Ra≤0.8Ra≤0.010×IT
Darasi na 2: Ra≥1.6 Ra≤0.021×IT
Ra≤0.8Ra≤0.018×IT
Darasi na 3: Ra≤0.042×IT
Tebu 1, Tebu na 2, da Tebura na 3 sun lissafa nau'ikan alaƙa guda uku na sama.
Lokacin zayyana sassa na inji, yana da mahimmanci a zaɓi ƙimar ƙarancin ƙasa dangane da juriya mai girma. Nau'o'in inji daban-daban suna buƙatar ƙimar tebur daban-daban don zaɓar.
Yana da kyau a lura cewa tebur yana amfani da ƙimar jerin farko don Ra, yayin da tsohuwar ma'aunin ƙasa yana amfani da ƙimar jeri na biyu don ƙayyadaddun ƙimar Ra. Yayin juyawa, ana iya samun al'amurra tare da manyan ƙima da ƙananan ƙima. Muna amfani da ƙimar babba a cikin tebur saboda yana taimakawa inganta ingancin samfur, kuma ana amfani da ƙananan ƙimar don ƙimar mutum ɗaya.
Teburin da ya yi daidai da ƙimar haƙuri da ƙaƙƙarfan yanayin tsohon ma'aunin ƙasa yana da hadadden abun ciki da tsari. Don ƙimar haƙuri iri ɗaya, yanki mai girma, da girman asali, ƙimar ƙaƙƙarfan yanayi don rami da shaft sun bambanta, kamar yadda ƙimar nau'ikan dacewa daban-daban suke. Wannan ya faru ne saboda alaƙar da ke tsakanin ƙimar haƙuri na tsohuwar haƙuri da daidaitattun daidaito (GB159-59) da abubuwan da aka ambata a sama. Sabon ma'aunin haƙuri na ƙasa na yanzu da dacewa (GB1800-79) yana da ƙimar haƙuri iri ɗaya don kowane girman asali a cikin ƙimar haƙuri iri ɗaya da girman sashi, yana sauƙaƙa madaidaicin tebur na ƙimar juriya da ƙarancin ƙasa da sanya shi ƙarin kimiyya da ma'ana.
A cikin aikin ƙira, yana da mahimmanci a kafa zaɓi na ƙaƙƙarfan yanayi akan gaskiyar bincike na ƙarshe kuma don tantance aikin saman gabaɗaya.cnc masana'antu tsaritattalin arzikin sassan don zaɓi mai ma'ana. Ana iya amfani da ma'aunin haƙuri da ƙimar ƙaƙƙarfan saman da aka bayar a cikin tebur azaman nuni don ƙira.
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Lokacin aikawa: Agusta-20-2024