.
:
Prof: N.Khatir 3
1
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:
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Prof: N.Khatir
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H-e H-f H-g H-h
H-j H-k H-m
H-p
E-h E-h F-h F-h G-h G-h H-h H-h
J-h J-h K-h K-h M-h M-h
P-h P-h
: -3
-2
-1
1- Jmax = 21 - (-20) = 21 + 20 = 41 µm > 0 Jmin = 0 - (-7) = 0 + 7 = 7 µm > 0 2- Jmax = 21 - (+) = 21 - = 19 µm > 0 Jmin = 0 - (+11) = 0 - 11 = -11 µm < 0 3- Jmax = 21 - (+22) = 21 - 22 = -1 µm < 0 Jmin = 0 - (+35) = 0 - 35 = -35 µm < 0
:
:
:
K6
Ø1
H7
Ø2
H7g6
Ø3
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:
: :
JA = A2 – (A4 + A3) JA max = A2 max – (A4 + A3) min JA min = A2 min – (A4 + A3) max
-
2
:
: B1 max – B5 min :
-
JB = B1 – B5 JB max = JB min = B1 min – B5 max
3
: Jc = c1 - (c5+c4+c2+c3) Jc max = c1 max - (c5+c4+c2+c3) min Jc min = c1 min - (c5+c4+c2+c3) max
: :
-
3
3
4
2
5
+23+2 BC
4/ 3/ 4/2
2
: 6 7 8
1
-
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Prof: N.Khatir
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Prof: N.Khatir
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7.4
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1.4
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- 100 Cr Mo 17 - 100 Cr 6
: .5
. .
.5
:
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Prof: N.Khatir
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da = d – 2.m
Ei
df = d – 2,5.m
Eé
df = d + 2,5.m
Ei
df Diamètre de pied
ha = m
ha
Saillie de la dent
hf = 1,25.m
hf
Creux de la dent
h = 2,25.m
h
Hauteur de la dent
b
Largeur de denture
b = k.m 6 ≤ k ≤ 10 a = (d1+d2) / 2
Eé
a = (d2- d1) / 2
Ei
a
Entraxe
: 20°
:
α:
:
:
:
m
Module normalisé
-
4.5
(
)
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Prof: N.Khatir
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b = k.m
b
Largeur de denture
ϴa
Angle de saillie
ϴf
Angle de creux
δ a1 = δ1 + ϴa
δa
Angle de tête
δ f1 = δ1 - ϴf
δ f
Angle de pied
6 ≤ k ≤ 10 tanϴa = m / L
ϴf = 1,25 m / L
δ1+ δ2
= 90°
:
:
. .
:
T :A :
.
R
:
5.5
a
df
da
d
z
m
96
. 26.
3 263
3 261
2 216
1.5
3
: : :
r 1/3 1/3 = 1/5
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Prof: N.Khatir
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: : :
: :
: :
:
:
6.5
d
z
δ
m
d=m.z
z2=tanδ2.z13
δ23 =δ -δ
/
1
6
21
130
6
2 13
2
:
:
:
:
:
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. .6
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.
-
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2.6
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3.6
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( . . 5.6
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7.6
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:
: : :
. . . :
-
: 3
2
4
8.6
.
6
5
: N4 = 1800 tr/mn
-
:
dp1 = 200 mm dp2 = 100 mm dp3 = 300 mm dp4 = 100 mm
: : : :
:
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.
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:
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d/2
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3.8
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.
rd
ϴ
:
5.8
0.5 Kw
:
750 tr/mn
.
.1000
tr
.
:
:1000
-
tr
:
-
: CuSn9P
C40
EN GJL 350
.9
:
E 295
-
.
:E
N/mm2 2
:EN N/mm
:351
295
:295 :GJL
: EN GJL 350
.
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- .
: -2
: : . : S 285
-3
-
k=3
: R
F
A
C
:τ
R
:Rpg
B x
1,4
:Reg
:
1,6
.
: 4
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.1
:
: :
-
x=0 x=1,4
.2
:
:
: : . -
x=1,4
:
x=3
: Ps = 2.4
3.1
Nt = 150 tr/min KW π=3
Rpg = 40N/mm2
:
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:
: IO = IGZ + IGY
IGY
4.1
IGZ
(S)
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: : . :
. .
BC
-
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. :
} 13
KB
-
O
2}
(
8
-
17
) .
AS
A :
17 CHc
-
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.
.3
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:
.2
:
.2
2 3 4 6 7
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:
.4
: : :
:
: :
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.
1
.
.Mc
Ma
-
/
: : –
– . –
:
: –
:
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.
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