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ĐỒ ÁN CHI TIẾT MÁY
ĐỀ SỐ 4: THIẾT KẾ HỆ DẪN ĐỘNG BĂNG TẢI
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1.3.3.Công suất
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>1
* 2+Z

hK
[
SGRFBF;$kk>?
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SGRFBF;$k>?
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1.3.3.Mômen xoắn trên các trục
US`V'nFBF;$k>?
US`V'nFBF;$kk>?
US`V'nFBF;$$S$>?
US`V'n#$$KFBF;$C$O>?
1.3.4Bảng thông số động học
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C
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PHẦN 2: TÍNH TOÁN THIẾT KẾ BỘ TRUYỀN
2.1.Tính toán thiết kế bộ truyền đai thang.
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a d mm= =
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.
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sb
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a mm
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.

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[ ]
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P k
Z
P C C C C
α
=
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k =
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[ ]
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3
B
1d

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α
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=
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F8(
[ ]
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3
B
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l
l
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C =
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[ ]
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3
B
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.2.
t
U =
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2 
u
C =
z
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[ ]
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2.2.4.Xác định sơ bộ chiều dài côn ngoài R
e
và đường kính chia ngoài d
e
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$SF•(•&:
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a. Xác định mô đun vòng ngoài và vòng trung bình m
te
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tm
:
€=F(v|

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:
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b. Xác định số răng :
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c. Xác định góc côn chia :
d. Xác định hệ số dịch chỉnh:
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.
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.
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e. Xác định đường kính trung bình và chiều dài côn ngoài :
56%7FG(c
GN?$S'?
2.2.6. Xác định các hệ số và 1 số thông số động học:
_FG#$
/0$1fFG(c$E8(F
F8(3! F 34" 1d(F$SF•1?1* 2, Z4[8
C5X$$R:$7V$$E8(FG>?w*+
F8:;>;$.!‡.,4" ˆ1d
 w*+
F8 
TBFK/cY. ..3,"d:Y,<
@/K'?/9'


 u,
 †•
 1* 2, Z4[
-GG78C5X$
gSF8 1?.F'‡" ˆ8$T
†
8

*.2,Q!! 2., |
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*2,
u,21* 2, ,Z4[|
1
* !
T
'
0:FGFT
‘:D(%SCGFTFB$$CSF%71rGR:
Vp$2G'(FG>?(F$SF•
2‘FTCF'1J%d:%71rGR:Vp$2G
2.2.7. Kiểm nghiệm bộ truyền bánh răng :
a. Kiểm nghiệm về ứng suất uốn :
YrGR:Vp$$':&:
*!|
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|
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‘%LC$O710>G$E8$$(F%d:F8(
3!,F3‡ ˆ
‘%LCcN9cT$$E8(H:Vp$F8(3! .F 3‡ ˆ
1d1?8C5X$
‘FJ%d:$E8F
‘FJ%d:8
‘FT%71:Vp$
* ! 2 ! 2,* 2 

(Y$GF1?F
F8 ,
TBFK/cY. ..3,"d:Y,<
@/K'?/9'
,

81?'8C5X$
LF8
b. Kiểm nghiệm về độ bền uốn:
2YrGRG$':&:$E8($EC1?(WC
‘FT%71BG
‘%LC#FJ%d:$E8F
‰
•
‘%LCCB$E8F'>?(F$SF•
‰
•
*
‘N9FF8(3! +‡ 4" ˆ1d
8C5X$
81?'8$A
v8t!
2.2.8. Một vài thông số hình học của cặp bánh răng :
56%71f$8
G$8'F'?
G$8'CKGF'?
G$8'$DF'?
56%7C_F'?
2.2.9.Bảng tổng hợp một vài thông số của bộ truyền bánh răng :
S ‚G @FW

GN?$S'? †
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Z[
F8 3
TBFK/cY. ..3,"d:Y,<
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PHẦN 3 : TÍNH TRỤC, CHỌN Ổ LĂN
3.1.Tính chọn khớp nối.
SCKG1?'
US`$KFG
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T%d:`'CG%
F'CAY56%7F;$$K
‘US`V'n7'
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YU'`V'nN8b8FBF;$
'10
F8( 3! 8‡.ˆF3+1dCG%

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F8( 3! (F3‡.ˆ1d
3.1.1.Kiểm nghiệm khớp nối.
8%L`'.CG%
8[ G%r$(N0:$E81fC?
YŽGRN0:$':&:$E81f$8'G
'10rGRN0:F8FB1fC?
v8t!
([ G%($E8$
F8 +
TBFK/cY. ..3,"d:Y,<
@/K'?/9'
+

F'CA
.

,
  2,
. .
l
l l= + = + =
‡ˆYŽGRG$':&:$E8$!8>R‡ˆ*Z3[U\8]
'102rGRF8FB$
v8t!
3.1.2.Lực tác dụng lên trục.
8$A
$S$O($E8F;$1fC?
S 7G @FW
US`V'n>dR$ALFGC5X$ .,Z-![

56%7>dR$AL$E8F;$ .Z[
=$ | 3
56%71fD$ ,Z[
GN?:KMC? .+Z[
GN?C'9$SVS$E8$ Z[
56%7$E8$SC? Z[
"#$$N;>BF;$ )
%
,32+Z-[
3.2.Tính sơ bộ trục
3.2.1.Chọn vật liệu chế tạo trục.
/0>G>?F;$$T>?&:,S$!
3.2.2.Tính sơ bộ đường kính trục theo momen xoắn.
`'$Sr$ !F ++‡ ˆ28$A
T
GFP>FBF;$F8( !.F +‡ ˆ
1d
F8 
TBFK/cY. ..3,"d:Y,<
@/K'?/9'


3.2.3.Xác định lực từ các chi tiết, bộ truyền tác dụng lên trục.
• Lực tác dụng lên trục I
 "#$$N;>BF;$kg(FGC8*<32+3Z-[
 "#$$N;>B(FG(F$SF•
 "#$1f
 "#$5dD
*!8= 2<!8!$'*,32.<Z-[
 "#$NT$F;$

*!8= 2<!8!2* .323Z-[
• Lực tác dụng lên trục II
"#$$N;g(FG(F$SF•
o "#$1f* 2<Z-[
o "#$5dD** .323Z-[
o "#$NT$F;$**,32.<Z-[
"#$$N;>BF;$kkg%d:*,32+Z-[
F8.
TBFK/cY. ..3,"d:Y,<
@/K'?/9'
.

3.2.4.Xác định khoảng cách giữa các điểm đặt lực.
 =OC%'$$~8$$CLCH>#$5c1•:$T8%$RG
@8G
 T$GN?8YO1?$$%'$$%

2%
.
2%

2

 GN?8YO(F$S
 `'$Sr$ ! .F +‡ ˆ8$A
T>
 
*.,Z[
T>
.

*,Z[
 GN?8YO(C8
 `'$Sr$ ! .F +‡ ˆ8$A
T>
 .
*Z[
F8.
TBFK/cY. ..3,"d:Y,<
@/K'?/9'
.

 GN?8YOM8%d:
 `'$Sr$ ! F +‡ ˆ8$A
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 '$$gHp$E8$^G8C?F'$E8:
%

*+28$T%

* 
 '$$gHp$E8PC?F'$E8:
%
.
*,28$T%
.
* 

 '$$gHp$E8$^G8Cn:P
%

* 28$T%

* 
 G$8'n:P1?CKG(GY>S
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
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Z$$FW%

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.
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
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
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 '$$$$CLCH>#$FB$$F;$
'$SYVSZ%'$c8[`'$Sr$ ! F ‡ ˆ
GF1?FrFBF;$%
'$$CH>#$FBF;$k


T>

*3Z[


T>

* Z[
o FBF;$kk


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3.3.Tính toán thiết kế trục
3.3.1.Tính toán thiết kế trục II
3.3.1.1.Tính phản lực tại các gối tựa
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