Download - PP 3 Izdržljivost
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Izdržljivost komponenata
prenosnika
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Razaranje bokova zubaca zupčanika
Hercov pritisak i klizanje
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Uticaj uljnog filma
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Piting
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Mikropiting
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A
B
C
D
E
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Spaling
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Skoring – Grebanje – Zaribavanje
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Gnječenje
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ISPITIVANJE ZUPČANIKA
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u=1, mn=3...5mm,
a=100mm, v=10m/s,
n50=100 mm2/s,
(Rz)bokova=3mm;
(Rz)podn.=10mm
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G rw2
rw1
a l
T1
T2
a
rlG
i
lGT w11
1
1121 wwww irrrra
1
1wr
ai
1121 iTTTTlG
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PF(sH)
PF(N) sHN
N
PF=0.9
PF=0.1
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Fn F"
F'
a'a
300 300
sF
hFa
sF
sp
t
Lomovi zubaca
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102 103 104 105 106 107
YN
NF
NFD
3,0
2,5
2,0
1,8
1,6
1,4
1,2
1,0
Opšti konstrukcijski
Poboljšani
Cementirani
Pov. kaljeni Nitrirani
NL, SL
104 105 106 107 108 109 NHD NHD NHD
1,7
1,6
1,5
1,4
1,3
1,2
1,1
1,0
ZN
Cementirani
Površinski kaljeni
Nitrirani
Poboljšani
Konstrukc.
Temper liv Nodularni liv
Sivi liv
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Korekcije
σNXWRvLHH ZZZZZZZσσ lim
40 80 120 160 200 240 280
100 200 300 400 500
1,1
1,0
0,9
ZL
n50 mm2/s
n40 mm2/s
N/mm2
= 900
=1000 =1100N/mm2
1200
850lim Hσ
1 5 10 40 100
1,0
0,9
1,1
Zv
N/mm2
= 900
=1000
=1000N/mm2
1200
850lim Hσ
vt m/s
2 4 6 8 10 12 Rr100 mm
1,1
1,0
0,9
0,8
ZR
N/mm2
= 1100
= 1000
= 900
850
1200lim Hσ
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1 2 4 10 20 40 Rz
mm
1,15
1,10
1,05
1,00
0,95
0,90
YRT
Cementirani
Pov.kaljeni
Poboljšani
NL, SL
Opšti konstrukcijski
1,4 1,6 1,8 2,0 2,2 2,4 2,6
Cementirani
Pov. kaljeni
YSa
1,4
1,3
1,2
1,1
1,0
0,9
YdR
Opšti
konstrukcijski
SL
Poboljšani, NL
Nitrirani
5 10 20 30 40
1,0
0,9
0,8
0,7
0,6
YX
Opšti konstr.
Poboljšani
Cementirani
Pov.kaljeni
Nitrirani NL,SL
mn mm
σNXRδRTSTFF YYYYYYσσ lim
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ISPITIVANJE LEŽAJA
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C
log F
log N NC=106
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C
C
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ISPITIVANJE VRATILA
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ISPITIVANJE ZAVRTNJEVA
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Glatka
epruveta
sA
Zavrtanj
model M12
sTM
sD
sSR
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