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, 2012
1. 酅.3
2. 酅9
3. 酅.................................13
4. ..14
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1.
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.1.
I 6, .28 [1] 27365 87 5-7606:
- , ,
5 ;
- D = 72 ;
- d=30 ;
- =27 ;
- r = 1,5 ;
- α = 11˚51′35″.
FR=25 ;
FA=10 ;
, , :
, 300% .
, d/ d =0,4.
, -
, ;
, ;
( ) ( d3):
d3 = d + 6 = 30 + 6 = 36 .
NmaxF = 70 , - NminF = 20 .
, : d1=D; d2=d; d3=d+6=36.
, ,
.
.14 [1] : D = 72-0.011; d=30-0,008.
: ,
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:
) .
.
k1, k2, k3: 300% 16 [1] k1=1,8;
. 17 [1] k2=1,0.
.18 [1] k3=2,0 β = 11˚51′35″ (F/FR) ∙ ctgβ = (10000/25000) ctg11˚51′35″= 1,91. :
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PR= (FR/)∙k1∙k2∙k3 = (25000/27)∙1,8∙1,0∙2,0 = 3333 /.
19 [1] PR = 3333 /
n5. Ø30L0/n5 (. 2).
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) .
. 15 [1] D = 72
,
300% Js6
4 5.
Ø72Js6/l0 (.2).
) .
.
d11-
d9 . d9
Ø72 Js6/d9
(. 2).
) .
,
.
S = 2030 . ,
EI , es = 24 20 30 .
, 9.
Ø309/n5 (.2).
Smin = EI es = 40 24 = 16 ,
.
) .
- d3 = 36 .
: NmaxF=70 ,
NminF= 20 . 4 6 [1] ,
: Nmin > NminF Nmax ≤ NmaxF.
Ø36H6/s7, Nmax = 68 ≤NmaxF = 70 Nmin=27 > NminF = 20 .
.2.
Nmin= 27
.
Δ =2,4 RZ,
. Δ= Nmin-NminF= 27 - 20 = 7 .
, Rz= 7/2,4 = 2,92 .
R,
1/4Rz, Ra=(1/4) ∙2,92 = 0,73
Ra= 0,63 ,
H6/s7.
2. d, D, d1, d2 d3
.2.
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