Thiết kế hệ dẫn động hộp giảm tốc 2 câp phân đôi cấp chậm và bộ truyền xích p=3,42kw,n3=130 vòng trên phút, t = 251238,46nmm

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-M7 7-2/<67A/.07A/H7A716H-8 V"
#:4;H7H9>-6 "9(-8 V":45FA?]$4>F
C-6H/<"\:]5 )45K
-AA V"
ch\4>FCmC4;H70C
S;4:-<.C-<.76H/<-A.A1
#H7A6"*[F
F-R./H"R-R./H62R86"R-A<./H
n*[FoF-A<.'l ;H7A2"
p"6"pH/.q"H/.q6H/.
6
A6
6
A6A6
π
ZZ

ZZxZZxpa
cc
−
−+−++−=
6 6
86 62
./6H76H/<qA<. ./H62 86" qA<. ./H62 86"p 6 " p A 8
2/A<
a
−
= − + + − + − =
"
:-A.A."
eT;4;F ,'bEL'> ;:_C;E
'∆:-./ 6777./ <":-6/.6777</.<"
⇒
∆:-2"
=W ;:-A.A.R2-A.A2"7
P*'_9:WCG:FH7A<
A 2
7
627A2.
A/<6 q p 6H
AH AH7A<.
c
Z n
i i
x
= = = < =
4;H78qrp7

9L@ @HF!,G,
3)*:(G:F
"
votd
FFFK
Q
S
++
=
#$s'(;C\d"/:4;H76/:$
s-H1/Y d"/ *'AFL
l
-6/1 7
S

'()*;/ 
A/H
mm
dn
T
T
=

⇒
S

-A/67j'(9)4f7
t

'('b9Kd"t


-
v
P7A
/9>M-2/<6SV"/
A A
7 7 6276H/ <7A2.
A/6Y
1 1
z p n
v = = =
u"
⇒
nb9Kt

-
2
A 7
A 72/<6
6182
A/6Y
p
v
= =
d"
t
9
'('bE?'b'`:d"t
9
-L79

6
#:4;H76qrp/:$ *'AmFL-6/1 "7
⇒
t
9
-2/<67A/6Y
6
-H/Hd"7
t

'('bE?'F:d"t

-8/0A7
v
7L7:

v
-645$α-"7
⇒
t

-8/0A7676/17A/ Y-HA/<d"7
⇒
H1Y
AY/6<
A/676182 HA/< H/H
S = =
+ +
#:4;H7A./:$9>≤6 9KuC^"fqPp-0/6
=WP-AY/6<w0/6-qPp

⇒
45F'(9):(7
:=&-(%KCMCHF
eh 9K:g:F
A
A
6H/<
A01/H
 
62
p
d
z
π π
= = =
"
6
6
6H/<
Y<2/8
 
86
p
d
z
π π
= = =
"
eh 9KkE
A A

q./H   x "p-6H/<q./HR x62"p A8Y/H
a
d p g z
π π
= + =
"
A 6
q./H   x "p-6H/<q./HR x86"p YH1/6
a
d p g z
π π
= + =
"7
eh 9KE
A A
6 A01/H 670/.6 AY./ <1
f
d d r= − = − =
"
6 6
6 Y<2/8 670/.6 Y6Y/01
f
d d r= − = − =
"
=>
./H.6H ./.H ./H.6H7AH/00 ./.H 0/.6
l
r d= + = + =
AH/00
l

d =
4;H76
;L@ @G,&0#HNKCMCHF
yC?H7A0
( )
[ ]
A
./<Y x  "
H r tđ vđ đ H
K F K F E AK
σ σ
= + ≤
#$t
9
'('b9:WCA?]Ft
9
-A27A.
%Y
7
2
7C
2
7
'(*?]F"
⇒
t
9
-A27A.
%Y
7A2.76H/<

2
7A-6/YYd"
S

'()*;S

-A/2H;9:WC"7
S

'()* Tj;UG:*Eg:F/
⇒
Sz
A
-62{?CCC:$S

-./<AY
eg:F9(?`FN'(4imC<H
⇒
|-6/A7A.
H
ZM:"7
O'(?)jG:4;'5/:4;H7A6/:$O-A0.
6
"7
}A?]
⇒

?
-A
⇒

( ) ( )
H
A
 ./<Y ./<AY 61827A/2H 6/YY 6/A7A. x A0.7A 16H/2
H
σ
= + =
ZM:"7
=W?NmC<H;)l[3~6A.•ljCF^
CmCqσ
3
p-1 ZM:"•;4;45jCF^Eg:F7
O<=>IP&=QEID&)E1
t

-S
F
7t

-A/.H76182-606Y/1Hd"7
S45i$αw<.


⇒
S
F
-A/.H
0&R0G&)*+,&)3#
7!S&I *
:"#4;17Au86

%~\mC<H;)l[3~6<A%60H/>l45
MPa
b
0H.
A
=
σ
/>l;
MPa
ch
H0.
A
=
σ
7
%~'>mC<H;)l[3~A86%6<./$>
l45
MPa
b
YH.
6
=
σ
/>l;
MPa
ch
<H.
6
=
σ

7
4"M`C*k*5€
h
-667#$€
A
-1/.Y/€
6
-2/12
67<=>4(*.&3#T#
•"jCF^CmC
P4:$
HHLHH
SK upq
.
'
σσ
=
#$
.
'H
σ
'(jCF^CmC9>* fU
n[4E\3~
A
-6<H/4'>3~
6
-62. $:$
H1.Y.6<H76Y.6
A
.

A'
=+=+= HB
H
σ
ZM:"
H2.Y.62.76Y.
6
.
6'
=+=+= HB
H
σ
ZM:"
%P
3
3)*:( 95jCF^P
3A
-P
36
-A/A
#17Hd
3‚
* f:DU {95jCF^
d
3‚
-2.3~
6/<
a$d
3‚A
-2.76<H

6/<
-A/17A.
Y
/d
3‚6
-2.762.
6/<
-A/287A.
Y
%P* f
∑
=
iiiHE
tnTTcN
2
:F
"u1.
A
=>*'_E >C9KL:/'-A7
P*9KL:4\
A
-600.9uC"/4'>
6
-<Y</<19uC"
%=>C:{?E+:$
~\
( )
2 2 Y
A
600. 2/< <

1.7A7 7A0 A ./0 2</87A.
1/.Y 0 0
HE
N
 
= + =
 
 
~'>
( )
2 2 Y
6
<Y</<1 2/< <
1.7A7 7A0 A ./0 8/17A.
2/12 0 0
HE
N
 
= + =
 
 
#:d
3|A
wd
3‚A
@d
3|6
wd
3‚6
?$:S

3nA
-S
3n6
-A7
#:
H1.A7H1.7
A
.
A'A'
===
HLHH
K
σσ
ZM:"
H2.A7H2.7
6
.
6'6'
===
HLHH
K
σσ
ZM:"
=W:
A./H.8A/AuA7H1.pq
A
==
H
σ
ZM:"

06/<0AA/AuA7H2.pq
6
==
H
σ
ZM:"
%=>C:{?E+:$
ƒjC^CmC
06/<0Ap„qp/…qpq
6A
==
HHH
σσσ
ZM:"
=>CW{?E
#17Y
∑
=
iiiHE
tnTTcN
2
:F
"u1.
A
~\
( )
2 2 Y
2 2 6
<Y</ <1 2/< <
1.7A7 7A0 A ./0 8/17A.

2/12 0 0
HE HO HO
N N N
 
= + = > =
 
 
⇒
2
A
HL
K =
~'>
( )
2 2 Y
< 2 6
A2. 2/ < <
1.7A7 7A0 A ./0 6/127A.
2/12 0 0
HE HO HO
N N N
 
= + = > =
 
 
<
A
HL
K⇒ =
CW{?E

ƒjC^CmC
[ ]
[ ] [ ]
A 6
H.8/A <0A/06
<8H/<1
6 6
H H
H
σ σ
σ
+
+
= = =
ZM:"
•"jCF^CmC L;17A2
~E'>
[ ]
6 A
:F
6/0 6/07<H. A61. "
H ch
m
Mpa
σ σ
= = =

~E\
[ ]
A A

:F
6/0 6/07H0. A16< "
H ch
m
Mpa
σ σ
= = =
•"*CmC
P4:$
FFLFCFF
SKK upq
.
'
σσ
=
#$
.
'F
σ
'(*CmC9>* fU
<<A6<H70/A0/A
A
.
A'
=== HB
F
σ
ZM:"
<A<62.70/A0/A
6

.
6'
=== HB
F
σ
ZM:"
P
t
)*:( 95*P
tA
-P
t6
-A/YH
#17Yd
t|
P* f:DG:4EE
+#:$
ii
m
i
FE
tn
T
T
cN
F
∑









=
:F
1.
⇒
1 1 Y
A
600. 2/< <
1.7A7 7A0 A ./0 60/107A.
1/.Y 0 0
FE
N
 
= + =
 ÷
 
ZM:"
1 1 Y
6
<Y</ <1 2/< <
1.7A7 7A0 A ./0 Y/07A.
2/12 0 0
FE
N
 
= + =

 ÷
 
ZM:"
#:d
t|A
wd
t‚
/d
t|6
wd
t‚

<7A. 1
Fo
N
∧
=
"/:'S
tnA
-S
tn6
-A
~5L:5/'>l45*S
t
-A
=W*CmC
[ ]
.
7 7 u
F FLim Fc FL F

K K S
σ σ
=
6H6
YH/A
A7A7<<A
pq
A
==
F
σ
ZM:"
HY/621
YH/A
A7A7<A<
pq
6
==
F
σ
ZM:"
•"*CmC L;17A<
"<1<H0.70/.70/.pq
A:FA
MPa
chF
===
σσ
"21.<H.70/.70/.pq
A:F6

MPa
chF
===
σσ
97F&3=G&)*+,G=)U&)E)U&V1
:7S;4
2
A
6
A
AA
pq
"A
baH
H
aw
u
KT
uKa
ψσ
β
+=
#4;171u8Yqrp
./2
ba
ψ
=
@
#4;17Hu81qrp:S
:

-<8/HE+"
⇒
( ) ( )
A
./H2 A ./H27./2 1/.Y A A/A6<
bd ba
u
ψ ψ
= + = + =
β
H
K
3)*FmjbC`4* 5;59(E
#:4;17Yu80:
β
H
K
-A/.YcH"
=>#
A
-A62.6/61d@
A
-1/.Y:$
( )
2
!A
6
A62.6/617A/.Y
<8/H 1/.Y A AA. "
1/.Y7<0A/06 7./2

a mm= + =
-AA."
47},*E >C7
CC
( ) ( )
!A
./.A ./.6 A/A 6/6m a mm= ÷ = ÷
4;170u88-6
P*4E\AE
- AH/H
nE-A1
⇒
†
6
-AH71/.Y-8Y/A6†
6
-8YE
a$
( ) ( )
A 6
!A
6 A1 8Y
AA2
6 6
m z z
a
+ +
= = =
"
n

!A
a
-AA2
a$: _?,k
$E >C176Y
( )
. . .
! !
 7 76. u 6 " AA2767 6. u 67AA2 6.
t t
c Z m a
α
= = =
P:
.
!
6.
t
α
=
7ST)E9545jCF^
H
σ
( )
( )
[ ]
6
! !A
6 A u
H M H H H

Z Z Z TK u b ud
ε
σ σ
= ± ≤
#4;17H
2uA
6Y<PaZ
m
=
)* Tj9W')G:4E7
H
Z
)* Tjf?l45BjCF^
.
!
6 u  6 67Au  676. A/Y1
H b t
Z
β α
= = =
=>4E+
( ) ( )
< u 2 < A/1<Y u 2 ./00HZ
ε α
ε
= − = − =
#$
( ) ( )
A 6
A/00 2/ 6 Au Au  A/00 2/ 6 AuA1 Au 8Y  A/1<Yz z c c

α
ε β
= − + = − +   
   
h 9K'E4\
( ) ( )
!A !A
6 u A 67AA2 u 1/.Y A 2A/8Y
m
d a u= + = + =
7
=>k*b

 8Y uA1 1/.1= =
@
59(E
!A !A
7 ./27AA2 22/8
ba
b a
ψ
= = =
=W*9(E
!A A
u 1 72A/8Y7600. u 1 </0v d n
π π
= = =
u
#4;17A2uA.1CFY/
A

H
K
α
=
4E+"@
4;17AH/17A1:$
.
./ 1/ <Y
H
g
δ
= =
P:
. !
u ./ 17<Y7</0 AA2u 1/.1 H/0<H
H H
v g v a u
δ
= = =

#:$
! !A
A
H/0<H72A/8Y722/8
A A A/6<
6 67A62.6/617A/.Y7A
H
Hv
H H
v b d

K
T K K
β α
= + = + =
⇒
A/.Y7A7A/6< A/2610
H H H Hv
K K K K
β α
= = =
#:
( )
( )
6
6Y<7A/Y17./00H 67A62.6/617A/2610 1/.1 A u 22/871/.172A/8Y <<Y
H
σ
= + =
ZM:"
•"},FjCF^CmC
#:$)*;UG:9W*9K9>9-</0Hu/
./.H ./.H
./86H ./86H7</0 A/ <Y
v
Z v= = =
=>CF'(Y:CF95jCF^'(0/ $
_:l9>
A/6H ./12
a
R m

µ
≤ ÷

A
R
Z =
/9>
AY
=⇒<
HXa
Kmmd
a$
[ ] [ ]
‡
7 <0A/067A/ <Y7A7A <06
H H v R xH
Z Z K
σ σ
= = =
ZM:"
a$:
p‡q
HH
σσ
<
4E;] 45jCF^7
?7ST)E9545*
"u6
AAAA
mdbYYYKT

wwFFF
βε
σ
=
#:$4;17Yu80/$
A/.YA
bd
Ψ =

⇒
)*C`4* c5;
59(E
A/A1
F
K
β
=
cH"
=>9W*9-</0u/CFY:4;17A<uA.Y:$
A/A1
F
K
α
=
#:$
. !
u ./.A17<Y7</0 AA2 u 1/.1 AH/H0
F F
v g v a u
δ

= = = ⊕
#$:4;17AH:$)*;UG::*E >C'(
./.A1
F
δ
=
3)*Fmj;F)9NE >C 95*
! !A
A
AH/H0722/872A/8Y
A A A/HA
6 67A62.6/617A/A17A/A1
F
Fv
F F
v b d
K
T K K
β α
= + = + =
3)*; 95*
A/A17A/A17A/HA 6/.2
F F F Fv
K K K K
β α
= = =
=>†
A
-A1/†
6

-8Y/F
A
-F
6
4;17A0uA.8:$
A 6
</61/ 2/1
F F
Y Y= =
3)* TjbN >CG:E
Au AuA/1<Y ./1.YY
ε α
ε
= = =
=>4E+:$
A
=
β
Y
=W
( )
A
67A62.6/617./1.Y7A7</61 u 22/872A/8Y76 68/2H
F
σ
= =
ZM:"
( )
A
67A62.6/617./1.Y7A72/1 u 22/172A/8Y76 6H

F
σ
= =
ZM:"
#F*CmC
xFSRFF
YYYpqpq
σσ
=
R
Y
3)*Fmj;UG:B'`E
A=
R
Y
xF
K
3)*Fmj >4E
A
xF
K =
?
a
ˆ< "
S
Y
3)*FmjWG:9W')
A/.0 ./.18H' A/.0 ./.18H' 6 A/.26
s
Y m= − = − =

a$
[ ] [ ]
A A
6H67A/.267A7A 61./A
F F R s xF
Y Y K
σ σ
= = =
ZM:"
[ ] [ ]
6 6
621/HY7A/.267A7A 6<</A<
F F R s xF
Y Y K
σ σ
= = =
ZM:"
=W
pq
AA FF
σσ
<
/
pq
66 FF
σσ
<
;4;G 45*7
7ST)95L;
:F

A/HH
m
qt
T
K
T
= =
#17<09(1/<8
#:$
:F
7 <2H/YH7 A/H H22/10
Hm H qt
k
σ σ
= = =
ZM:ˆ
[ ]
:F
H
m
σ
A :F A
7 68/2H7A/HH <</.6H
F m F qt
k
σ σ
= = =
ZM:ˆ
[ ]
A

:F
F
m
σ
6 :F 6
7 6H7A/H 2Y/H
F m F qt
k
σ σ
= = =
ZM:ˆ
[ ]
6
:F
F
m
σ
v7*G:45
% S;
VA
AA2a =
"
% ZCC-6"
% 59(E
VA
22/8b =
"
% #k*5
A
-1/.1

% P*E†
A
-A1@†
6
-8Y
% 3)*?,kF
A
-.@F
6
-.
#4;17AAuA.<:$
Reh 9K:
?
A
-†
A
-67A1-26"
?
6
-†
6
-678Y-A8<"
Reh kE
( ) ( )
A A A
6 A 26 6 A . . 6 21
a
d d x y m= + + − ∆ = + + − =
"
( ) ( )

6 6 A
6 A A8< 6 A . . 6 A80
a
d d x y m= + + − ∆ = + + − =
"
Reh `E
( ) ( )
A A A
6/H 6 26 6/H 67. 6 6Y
f
d d x m= − − = − − =
"
( ) ( )
6 6 6
6/H 6 A8< 6/H 67. 6 A08
f
d d x m= − − = − − =
"
#I*'):$4;*9( >45
S;
!A
AA2a =

Z -6
59(E
!A
22/8b =

#k*5
A

1/.1u =
$G:E
.
.
β
=
P*E
A 6
A1/ 8Yz z= =
3)*?,k
A 6
.x x= =
eh :
A 6
26/ A8<d d= =

eh kE
:A 6
21/ A80
a
d d= =

eh E
vA 6
6Y/ A08
f
d d= =

:7F&3=G&)*+,G=)U&)E)UD1
:7S;4

2
6
6
6
66
pq
"A
baH
H
aw
u
KT
uKa
ψσ
β
+=
#4;171u8Y
2/.
=
ba
ψ
#4;17Hu81:S
:
-<2E"
⇒
( ) ( )
6
./H2 A ./H27./2 2/12 A ./Y21
bd ba
u

ψ ψ
= + = + =
β
H
K
3)*FmjbC`4* 5;59(E
#:4;17Yu80:
β
H
K
-A/.Y
=>d/
6
-2/12:$
( )
2
!6
6
YA1H1/67A/.Y
<2 2/12 A A2A/68
2/127<8H/<1 7./2
a = + =
"

!6
A2Aa =
@
!6
./27A2A 28/2b = =
7

47},*E >C
%CC
( ) ( )
!6
./.A ./.6 A/2A 6/16  "m a mm= ÷ = ÷
4;170u88
6
n
m =
4$
.
A.
=
β
/
80<0/.
=
β
P*4E\A
( ) ( )
!6
2
6 7 
67A2A7./80<0
6Y/01
A 6 2/12 A
a c
z
m u
β

= = =
+ +
E
n
2
60z =
E
⇒
†
<
-2/12760-A.A/1<E/†
<
-A.AE7
#k*5b
A.A
2/1
60
m
u = =
( ) ( )
6
2 <
.
!
6 61 A.A
 ./8061 A</6
6 67A2A
m z z
c
a

β β
+ +
= = = ⇒ =
7ST)E9545jCF^
H
σ
#1722:$
( )
( )
[ ]
6
6 !6 !6
6 A u
H M H H H
Z Z Z T K u b ud
ε
σ σ
= ± ≤
#4;17Hu81/
2uA
6Y<PaZ
m
=
)*G:9W')7
H
Z
)*f?l45BjCF^
!
6 u  6
H b t

Z
β α
=
#$
b
β
'($G:EfU

. . . ‡
:  : 6. 2<‡:A</6 ./6211 A2 A0
b t b
c c
β α β β
= = = ⇒ =
9>E ?,k
( )
( )
. . .
!
: : : u   : : 6. u A</6 6. 2<‡
t t
c a c
α α α β
= = = =
a$
. .
6A2 A0‡u  676. A/Y<
H
Z = =
#:$)*?

( ) ( )
.
!6
 u 28/2A</6 u 67 A/H2 Ab m
β
ε β π π
= = = >
=>4E
A Au AuA/1<Y ./YY8Z
β ε α
ε ε
> ⇒ = = =
#$
( ) ( )
.
A 6
A/00 2/6 Au Au  A/00 2/ 6 Au 60 AuA.A A</6 -A/10z z c c
α
ε β
= − + = − +
   
   
eh 9K'E4\

( ) ( )
!6 !6
6 u A 67A2Au 2/12 A H1/H0Y
m
d a u= + = + =
7

=W*9(E
!6 6
u 1 7H1/H0Y7<Y</<1 u 1 A/<.Hv d n
π π
= = =
u
#4;17A2uA.19>9-A/<.Hu/CF8/
A/A2
H
k
α
=
@4;
17AH/17A1:$
Y2@ 6/.
.
==
g
H
δ
P:
. !
u ./ 67Y27A/<.H A2Au 2/12 A/626
H H
v g v a u
δ
= = =
u
#:$
!6 !6

‡
6
A/626728/27H1/H0Y
A A A/.26
6 672H060/A7A/.Y7A/A2
H
Hv
H H
v b d
K
T K K
β α
= + = + =

A/.Y7A/A27A/.6Y2 A/6<6
H H H Hv
K K K K
β α
= = =
#:

( )
( )
6
6Y<7A/Y<7./YY8 672H060/A7A/626 2/12 A u 2/12728/27H1/H0Y 2HA
H
σ
= + =
ZM:"
#:$)*;UG:9W*9K9>9ˆHu/

A
=
v
Z
=>CF'(8:CF95jCF^'(8/
A
=
R
Z
AY
=⇒<
HXa
Kmmd
a$
[ ] [ ]
‡
7 <8H/<17A7A7A <8H/<1
H H v R xH
Z Z K
σ σ
= = =
ZM:"
a$:
p‡q
HH
σσ
<
;] 45jCF^
?7ST)E9545*


"u6
66262
mdbYYYKT
wwFFF
βε
σ
=
#:$
./Y21
bd
ψ
=
:4;17Yu80qrp:$
A./A
=
β
F
K
=>9W*9-A/<.Hu/CF8:4;17A<uA.Y:$
2Y/A
=
α
F
K
#:$
6
7 7 7 u ./ 17Y27A/ <.H7 A2Au 2/12 2/18
F F w m
V g V a u
δ

= = =
#$:4;17AH/17A1:$
Y2@ 1/.
.
==
g
F
δ
3)*Fmj;F)9NE >C 95*

6 6
6
7 7
2/18728/27H1/H0Y
A A A/.Y1
6 672H060/A7A/A7A/2Y
F w w
FV
F F
v b d
K
T K K
β α
= + = + =
3)*; 95*

7 7 A/A7A/2Y7A/.1H A/1
F F F V
K K K K
β α

= = =

P*E
2 2
A 2
u  60 u  A</6 2./Y
v
z z
β
= = =
2 2 .
6 <
u  A.Au  A</6 AA.70
v
z z
β
= = =
#4;17A0uA.8qrp:$
1./2@0./2
<2
==
FF
YY
)*?lEQt"
3)* TjbN >CG:E
Au AuA/10 ./H8HY
ε α
ε
= = =
=>4E:$

A uA<. A A</6 uA<. ./080Y
β
β
= − = − =
=W
‡
2 6 2 ! 6 !6
6 7 7 7 7 u  7 7 " 672H060/A7A/17./H8H7./08072/0 u 28/27H1/H0Y76" H6/2<
F F s F
T K Y Y Y b d m
β
σ
= = =

ZM:"9>
‡
6
6
YA1H1/ 6
# 2H060/A
6 6
T
= = =
?C`CW"

< 2 2 <
7 u H6/2<72/0 u 271 HH/6<
F F F
Y Y
σ σ

= = =
ZM:"
#F*CmC

xFSRFF
YYYpqpq
σσ
=
R
Y
3)*Fmj;UG:B'`E
A=
R
Y
xF
Y
3)*Fmj >4E
A=
xF
Y
S
Y
3)*FmjWG:9W')
A/.0 ./.8H' 6 A/.A<
s
Y = − =
a$
[ ]
2
6H67A7A/.A<7A 6HH/H60

F
σ
= =
ZM:"

[ ]
<
621/HY7A7A/.A<7A 628/00
F
σ
= =
ZM:"
=W
pq
22 FF
σσ
<
/
pq
<< FF
σσ
<
u5 )45*
7ST)95L;
u A/HH
qt mm
K T T= =
#:$

[ ]

:F
:F
<<<7 A/HH HH6/YY "
Hm H qt H
m
K MPa
σ σ σ
= = = <
[ ]
2 :F 2 2
:F
7 <6/2<7A/HH 0A/A6Y "
F m F qt F
m
K MPa
σ σ σ
= = = <

[ ]
< :F < <
:F
7 HH/6<7A/HH 0H/166 "
F m F qt F
m
K MPa
σ σ σ
= = = <
v7*G:45
% S;
!6

A2Aa =

% ZCC-6"
% 59(E
!6
28/2b =

% #k*5
6
-2/12
% $E
.
A</6
β
=
% P*E†
2
-60@†
<
-A.A
% 3)*?,kF
A
@F
6

#4;17AAuA.<qrp:$
Reh 9K:

.
2 2

† u  6760 u A</6 HY/Y1 "d m c c mm
β
= = =

.
< <
† u  67A.Au A</6 6.0/2Y "d m c c mm
β
= = =

Reh kE

2
2 A
6A " HY/Y1 6A . ."6 1A/Y1 "
a
d d x y m mm= + + − ∆ = + + − =
< < A
6A " 6.0/2Y 6A . ."6 6A6/2Y "
a
d d x y m mm= + + −∆ = + + − =

Reh `E
2 2 A
6/H 6 " HY/Y1 6/H ."6 H6/Y1 "
f
d d x m mm= − − = − − =
< < A
6/H 6 " 6.0/2Y 6/H ."6 6.2/2Y "
f

d d x m mm= − − = − − =

7#'b?

6
6
!6
6
67YA1H1/6
6H26/1
H1/H0Y
t
T
F
d
= = =
d"

.
6 6
6H26/1 6. 2<‡ 8H./2
r t t
F F tg tg
α
= = =
d"

.
6
6H26/1 A</6 1<./0H

a t
F F tg tg
β
= = =
d"
~;*')7
=&-(%
W&)*+,G=)U
&V
W&)*+,G=)U
D
S;

"
AA2 A2A
Z
Z
6 6
59( 22/8 28/2
w
a
E "
$G:
E
.
A</6
P*E4
E
z
A

/z
6"
A1 8Y 60 A.A
3)*?,k
F/"
. . . .
eh 
9K:?
A
/?
6
"
26" A8<"
HY/Y1 "mm
6.0/2Y "mm
eh k
E?
:A
/?
:6
"
21" A80"
1A/Y1 "mm
6A6/2Y "mm
eh 
E?
vA
/?
v6
" 6Y" A08"

H6/Y1 "mm
6.2/2Y "mm
:F&)E1
!S&I *1
Chọn vật liệu chế tạo các trục là thép 45 có = 600MPa, ứng suất xoắn cho phép
=12 20 MPa.
2. Xác định sơ bộ đường kính trục:
%#A.78"uA00/h G: / -A/6/2
?

-
w
b
β
.
ο
#$?

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