|
Name |
Symbol |
Relation |
|
Module |
m |
- |
|
Pressure angle |
α |
α = 30 o |
|
Diameter of pitch circle |
d |
d = m N |
|
Shaft tooth height |
h |
h min = h a + h fmin |
|
Shaft tooth height when centering to tooth sides Shaft tooth height when centering outside |
h a |
h a = 0.45mm h a = 0.55m |
|
Shaft tooth height |
h |
h min = h a + h fmin |
|
Hub dedendum: flat bottom of groove round bottom of groove |
H f |
H fmin = 0.55m H fmin = 0.65m H f = 0.77m |
|
Radius of tooth transition curve |
ρ r |
ρ rmin = 0.15m |
|
Nominal groove width on pitch circle |
e |
e = π / 2m + 2xm tg α |
|
Hub root diameter: flat bottom of groove round bottom of groove |
D f |
D f = D D fmin = D + 0.44m |
|
Displacement of basic profile |
x m |
x m = 1/2 (D-m N - 1.1m) |
|
Shaft root diameter: flat bottom of groove round bottom of groove |
d f |
d fmax = D - 2.2m d fmax = D - 2.76m |
|
Shaft outside diameter: centering to the tooth side centering to the outside |
d a |
d a = D - 0.2m d a = D |
|
Hub tooth chamfering or fillet diameter |
K |
K = 0.15m |
|
Pitch |
p |
p = π m |
|
Number of teeth |
N |
- |
|
Basic diameter |
d b |
d b = m N cos α |
|
Hub tooth height |
H |
H = H a + H f |
|
Addendum |
H a |
H a = 0.45m |
|
Shaft addendum for flat bottom of groove for round bottom of groove |
h f |
h fmin = 0.55m h fmin = 0.65m h f = 0.83m |
|
Shaft pitch width of tooth |
s |
s = π / 2m + 2xm tg α |
|
Nominal diameter of splining |
D |
D = m N + 2xm +1.1m |
|
Hub outside diameter |
D a |
Da = D - 2m |
|
Radial clearance |
c |
c min = 0.1m |
|
Diameter of circle of limit points of hub tooth sides |
D 1 |
D 1imin = d a + F T |
|
Diameter of circle of limit points of shaft tooth sides |
d 1 |
d 1imax = D a + F T |
|
Splining diameter |
D d |
- |