... left-hand worm and worm -gear, we have
R
o
=
p
ax
N
2
cos λ
(o)
1
2 sin
γ + λ
(o)
1
. (19.3 .10)
P1: JsY
CB6 72- 19 CB6 72/ Litvin CB6 72/ Litvin-v2.cls February 27 , 20 04 1 :28
19.5 Generation and Geometry ... d
sin α sin λ
p
(cos
2
α + sin
2
α sin
2
λ
p
)
0.5
(19.5 .20 )
where
d = r
p
−
s
p
2
cot α.
P1: JsY
CB6 72- 19 CB6 72/ Litvin CB6 72/ Litvin-v2.cls February...
... 14.3.3):
x
2
= r
b2
cos(θ
2
− η
2
) + u
2
cos λ
b2
sin(θ
2
− η
2
)
y
2
=−r
b2
sin(θ
2
− η
2
) + u
2
cos λ
b2
cos(θ
2
− η
2
)
z
2
= u
2
sin λ
b2
− p
2
θ
2
(14.3.15)
n
2
= [sin λ
b2
sin(θ
2
− η
2
) sin ... 14.3.3):
x
2
= r
b2
cos(θ
2
− η
2
) + u
2
cos λ
b2
sin(θ
2
− η
2
)
y
2
= r
b2
sin(θ
2
− η
2
) − u
2
cos λ
b2
cos(θ
2
− η
2
)
z
2...
... 3D-space.
Worm
Helical gear
Figure 16.1 .2: Gear drive formed by a worm and a helical
gear.
P1: GDZ/SPH P2: GDZ
CB6 72- 15 CB6 72/ Litvin CB6 72/ Litvin-v2.cls February 27 , 20 04 0:44
1
2
3
Figure 15.9.1: Whole gear drive ... r
p2
π
N
2
= 8. 522 1 mm.
Radii of addendum and dedendum cylinders:
r
pa1
= r
p1
+ m
pn
= 39. 524 5 mm
r
pa2
= r
p2
+ m
pn
= 82. 6678 mm
r
pd 1
= r
p1...
... Section 3.4)
cot γ
1
=
m
12
+ cos γ
sin γ
, cot γ
2
=
m
21
+ cos γ
sin γ
=
1 + m
12
cos γ
m
12
sin γ
(18 .2. 2)
P1: JXR
CB6 72- 18 CB6 72/ Litvin CB6 72/ Litvin-v2.cls February 27 , 20 04 1:5
18.1 Introduction ... ”“s” and “1, ” and “1” and
2 are considered. Angle γ
s
that is formed between the shaper axis and IA
s2
is
P1: JXR
CB6 72- 18 CB6 72/ Litvin CB6 72/ Litvin-v2.cl...