• 3.1 ) CAC DANG HONG
• - Duoi tac dung cua luc ep , tai vung tiep xuc
cua cac banh ma sat sinh ra ung suat tiep xuc .
• _ Neu bo truyen duoc boi tron day du , be mat
bi hong chu yeu do troc vi moi be mat
• - Neu bo truyen lam viec kho hoac nua uot ,
banh ma sat bi mon hoac bi xuoc lop be mat .
• - De tranh cac dang hong hoc chu yeu noi tren
• .2) TINH TOAN THEO DO BEN TIEP XUC • Theo dinh luat Hec ta co
• ۾H = 0.418 √FnE/bp ≤ [ ס H ]
• Trong do : Fn la luc phap
tuyen
• E la mudun dan
hoi
• P la ban kinh
cong tuong duong
• _ Truyen dong banh ma sat tru
• Fn = Fr = KFt / f = ( K / f ) . ( 2T1
/ D1)
• T1 = 9,55 . 1 6 R / n N . Mm00 • Fn = 2. 9,55 . 10 6 KR /f D1n1 • Trong do : D la duong kinh banh dan mm • n1 so vong quay v/p
• R cong suat kw • f la he so ma sat
• Fn la luc phap tuyen N • + He so = Fn / b ≤ [ qn ]
• trong do : qn la cuong do
luc phap tuyen
• [ qn ] la cuon luc
• Truyen dong banh ma sat tru
• Fn = Fr = KFt / f = ( K / f ) . ( 2T1 / D1)
• T1 = 9,55 . 1 6 R / n N . Mm00
• Fn = 2. 9,55 . 10 6 KR /f D1n1
• Trong do : D la duong kinh banh dan mm
• n1 so vong quay v/p
• R cong suat kw
• f la he so ma sat
• Fn la luc phap tuyen N