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
3456V989%
=*C*
7
CEI]EF?_G
=C
7
CETJIDeF"KKG
=C
7
CDeJF:LRG
=9C9
7
C^ITe
=YCE
<
 Chọn loại đai và tiết diện đai
hS<x7PP%


I
b

h
≈
XP7y

ED

 
 
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( )
( )
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* EI]E ?z 
 DeJ : L R 

=


=


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2. Chọn đương kính hai bánh đai d
1
và d
2
• h7MN?OA7Pn
h`
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j<V99{X<AB

^
eQ
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 
 
Ph`

CeJKK
rKXP::H67P
 
KPu
  eJDeJ
TIJ^F L G
eJJJJ eJJJJ
d n
v m s v
π π
= = = <
:c:
KPu
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• h7MN?OA7PSc`
^
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`
^
C
( )
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 ^ITeeJ

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F G F JIJQG
u d
mm
ε
= =
− −
GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
e
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h%εCJIJQ
j<A
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B
 
 
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2
= 450 mm
3 (Hi56X9>%
^

EJ
^ITDD
F G eJF JIJQG
t
d
u

d
ε
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− −
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^ITDD ^ITe
JJt JJt ITt t
^ITe
t
u u
u
u
− −
∆ = = = <
nPKo79?
3. Xác định khoảng cách trục a
>P:;<9
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C^ITDDXPA
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 
 
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^
a
d
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( )
^
 ^ ^ 
^
F G F G
^ 
^ 
FeJ EJG FEJ eJG
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^ EJ
d d d d
L a
a
mm
π
π
+ −
= + +
+ −
= + + =
j<A
Q

ED

B
 
 
→ 9`;j<V99{h
SC^JJJ
( )
mm
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KPu
TIJ^
IJ^
^IJ
v
i i
l
= = = <
:c
KPu
CJ

s
 
 ÷
 
nPKo
GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
]
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^ ^
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λ λ
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^ ^
d d
L mm
d d
mm
λ π π
+ +
= − = − =
− −
∆ = = =
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( )
^ ^ ^ ^
T JT JIT TE

DDIT]]
 
a mm
λ λ
+ − ∆ + −
= = =
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o o
o o o o
d d
a
α
= − − = − − = >
nPKo
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zu.lo
d1
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K.P
z
α
=
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l*
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J
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KW
mm

=


=




7
%56Xh7XPA
[ ]
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7
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T


α

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
→
α
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C3JIJJ^EFTJ3
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α
GC3JIJJ^EFTJ3
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o o
α
= ÷
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[ ]
E

e
:c

eIDQ^
α
= °
P7Mq
α

CJID^
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
S
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[ ]
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^JJJ
I]e
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o

L
l
= =
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S
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 
9
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9
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XPA
[ ]
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o
P
P
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d
l u z
P K
z
C C C
α
= = =
→SZ~CQ
ECác thông số cơ bản của bánh đai
9X[PA7P
CF~3G=^j
XPA
[ ]
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

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GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
D

( )
( )
( )
( )
J
^IE
E
J
QIQ
QT
H mm
t mm
e mm
h mm
ϕ

=

=


=


=



= °

→ CFQ3GE=^JCEJFKKG
→ #UVKK•Xo7P
QT
ϕ
= °
MN?O<;[PA7P
( )
( )
  J
^ ^ J
^ eJ ^QIQ eeIe
^ EJ ^QIQ EeIe
a
a
d d h mm
d d h mm

= + = + =


= + = + =


MN?O7A7P

( )

( )
 
^ ^
eeIe ^IE EI
EeIe ^IE I
f a
f a
d d H mm
d d H mm

= − = − =


= − = − =


eXác định lực căng ban đầu và lực tác dụng lên truc
- >AP789B
J
=

]TJ 
 
d
v
P K
F
v C z
α
+

X9>779iS>→ B
:
CJ
( )
N
X97y?‚79iS> →B
:
Cg
K
:
^
IX<7U%
g
K
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• 
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• 9C9
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MN?OA7Pn `
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MN?O7iA7Pn `

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II. Tính toán thiết kế bộ truyền trong
Tính Toán Thiết Kế Bộ Truyền Bánh Răng Trụ Nghiêng
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• C
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XPA
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^
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2.2. Xác định ứng suất cho phép :
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[ ]
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=%56:fg9PX<Rs
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= = = =
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" QeQJ^TJ " DDDJeQTITD
ˆ ‰
= > =
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ˆ
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= > =
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Bˆ^
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B‰^
Œ
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GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4

E

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QeJ
J
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† • •    ^]I^]^ *P
:
X
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 
. I
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† • •    QDJIDJD *P
:
X
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/ |B
B . B
. I]E
B
†
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 
 
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 
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 
 ÷
 
 
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= =
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† JDIJD *P
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+
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= = =
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= = =
= = =
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2.3. Xác định sơ bộ khoảng cách trục:
( )
[ ]
Q
AP
•

9
^

†
Y



9
P
?
z
P +=
GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4

e

=?
P
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XPA
[ ]

De
Ee
Œ?
P
CQRP
LQ
=

%K<Kju<wXVXA[7%

CQ]]DQID]F"KKG
=
[ ]
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σ
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[ ]
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σ
CJDIJDF*PG
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=
ba
ψ
I
bd
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XPA
[ ]
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ba
ψ
CJIQ
Œ
bd
ψ
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ba
ψ
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=
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I
BY
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X?O:‡59ZRus:;96

XPA
[ ]
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ee
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
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CIJQ:;
BY
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( ) ( )
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P ?  9  Q QID   TDI^eT KK
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z
P
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 
= + = + =
hP
z
CDJFKKG
2.4. Xác định các thông số ăn khớp:
^<`9RR%
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z
CFJIJ JIJ^GDJCID
…
QITKK
GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
]

XPA
[ ]

DD
Te
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Œh•
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QID
9 9
QITT QID

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9
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= = = <
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+
+
= = =
⇒ = = = ⇒ =
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 z
<5Y JIDeQ
 
 
 ÷
 ÷
 
 
= = = =
3#UV[PXXVŽX\5kY
A
( )
( )
J J
Y PX <5• Y PX <5F^JI]J GFEIeQEG Ie]

A
= = =
GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
T

^E. |7y56:;K56456Žh%
3}56X9>%9
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=
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z

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= = =
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= = =
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[ ]
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[ ]
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=‹QEJ=:CIQ]FKL5G
PU
:
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CHƯƠNG III : TÍNH TOÁN THIẾT KẾ TRỤC
I. Tính chọn khớp nối
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GVHD: Hoàng Văn Bạo SVTH: Nuyễn Đình Dũng Lớp: CTM4
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