HCM City Univ.. of Technology, Mechanical Engineering Department Nguyen Tan Tien11.. CƠ CẤU BÁNH RĂNG KHÔNG GIAN... HCM City Univ... HCM City Univ... HCM City Univ.. of Technology, Mech
Trang 1HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
11 CƠ CẤU BÁNH RĂNG
KHÔNG GIAN
Trang 21 p 2
p
1 O
2 O
1 ω
1 β
2 β δ
2 p
2
a
1
a
2
ω
1
p
HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
2 1 2 1 2
) , ( ), ,
β
2 1
1 2
2
1 1 2
2
sin sin
//
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2
β β
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⊥
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vr
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p
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1 β 2 β
Trang 3HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
1 1
2 2
2
1 12
cos
cos
β
β ω
ω
r
r
) (
δ = − +
P
t
1 P
v
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t
t
1 P
v
2
P v
P
t
P
Trang 4HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
1
p
2
12
cos
β
β ω
ω r
Trang 5HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
Trang 6HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
R
O 1
ω
2 ω 1
ϕ
2 ϕ δ
1
O
2 O
1
N
2 N
01
p
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Trang 7HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
δ
1
ϕ ϕ2
O
1
i
r 1
e
r
1
r′
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r′
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P
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h
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, 1 2 , 1
2
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π
) cos 2 ( 2
cos
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, 1
2 , 1 2
, 1 2 , 1
ϕ
ϕ
+
=
′ +
= z m
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) cos 5 , 2 ( 2
cos
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, 1
2 , 1 2
, 1 2 , 1
ϕ
ϕ
−
=
′′
−
= z m
h r
2 , 1
2 , 1
r
m
1, r’
2đượcgọi àb nhrăngthaythếcủa
δ
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ϕ ϕ2
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i
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1
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cos
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r
2 , 1
2 , 1
2 , 1
2 , 1 2 , 1
cos
cos 2 2
ϕ
ϕ
z m r m
r
=
′
=
′
=
Trang 8HCM City Univ of Technology, Mechanical Engineering Department Nguyen Tan Tien
1 2
1 2
1 2
1 2
2
1 12 2 2 1
sin
sin sin
sin
ϕ
ϕ ϕ
ϕ ω
ω ω
ω = ⇒ = = = = =
OP
OP r
r z
z i
r r
0 2
β
0 2
β