1. Pre-tightening na zaren haɗin gwiwa Kafin aikin nauyin aiki, an ƙaddamar da dunƙule zuwa aikin da ƙarfin da aka rigaya ya yi.
1. Manufar pre-tightening
1) Ƙara taurin haɗin gwiwa
2) Kara matsewa
3) Inganta ikon yin sako-sako
Ƙayyadaddun kayan aiki na saura: 1) Babu canji a cikin nauyin aiki: FR FR = (0.2 ~ 0.6) 2) Canjin aikin aiki: FR = (0.6 ~ 1) F3) Akwai buƙatun matsawa: Fp FR = (1.5 ~ 1.8)
$10-7 Kayayyaki da abubuwan da aka yarda da su na bolts1.An rarraba Bolt materialBolts bisa ga kayan aikinsu, kuma ƙa'idar ƙasa ta tanada: Bolts 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8,9.8, 10.9, 12.9nuts 4, 5, 6, 8, 9, 10
2. Ma'anar lambar darajar aikin bolt:Lambar e ta farko: tana nuna iyakar ƙarfin ƙugiya na kayan amosanin gabbai.1/100 na waccan.σ= lambobi na farko x 100Lambobi na biyu: yana nuna iyakar abin da ake samu na bolt.Sau goma iyakar ƙarfin ƙarfi σ.Sigma.= Lambobin farko x lamba na biyu x 10Misali: Class 4.6 boltσρ=4×100-400MPa, σ, =4×6×10-240MPa3.Danniya mai yiwuwa na haɗin zare Dubi Tables 10-6 da 10-7
2. Tambayoyin lissafi
A simintin ƙarfe madaidaiciya haƙori cylindrical gear ta hanyar maɓalli da haɗin shaft na ƙarfe, diamita sashin shaft a gear d = 60mm, tsayin cibiya L'= 100mm, karfin jujjuyawar T = 5.5 × 105N.mm, ɗan tasiri a cikin aiki, yi ƙoƙarin tsara wannan haɗin maɓalli. Magani: 1) Ƙayyade kayan aiki, nau'i da girman maɓalli saboda an yi cibiyar da ƙarfe na simintin gyare-gyare, ana iya zaɓar kayan maɓalli na karfe 45, kuma babu motsi tsakanin axial. da kaya da shaft, don haka da A-type talakawa lebur key aka zaba. Bisa ga axle diamita d=60mm, cibiya tsawon 100mm, duba Table 10-9, Take: b=18mm, h=11mm, L=90mm.
Lokacin aikawa: Satumba-13-2023