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PlanetaryGear: add maxplanets and deltateeth params

This commit is contained in:
Florian Festi 2016-07-29 22:26:02 +02:00
parent 6dd482be9c
commit 419cccc7dd
1 changed files with 18 additions and 1 deletions
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19
boxes/generators/planetary.py
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@ -27,6 +27,12 @@ class Planetary(Boxes):
self.argparser.add_argument(
"--planetteeth", action="store", type=int, default=20,
help="number of teeth on planets")
self.argparser.add_argument(
"--maxplanets", action="store", type=int, default=0,
help="limit the number of planets (0 for as much as fit)")
self.argparser.add_argument(
"--deltateeth", action="store", type=int, default=0,
help="enable secondary ring with given delta to the ring gear")
self.argparser.add_argument(
"--modulus", action="store", type=float, default=3,
help="modulus of the theeth in mm")
@ -54,6 +60,8 @@ class Planetary(Boxes):
t = self.thickness
planets = int(math.pi//math.asin((self.planetteeth+2)/(self.planetteeth+self.sunteeth)))
if self.maxplanets:
planets = min(self.maxplanets, planets)
# Make sure the teeth mash
ta = self.sunteeth+ringteeth
@ -76,7 +84,16 @@ class Planetary(Boxes):
self.gears(teeth=self.sunteeth, dimension=self.modulus,
angle=pressure_angle,
mount_hole=self.shaft, profile_shift=profile_shift, move="up")
for i in range(planets):
numplanets = planets
if self.deltateeth:
numplanets += planets
deltamodulus = self.modulus*ringteeth/(ringteeth-self.deltateeth)
self.gears(teeth=ringteeth-self.deltateeth, dimension=deltamodulus,
angle=pressure_angle, internal_ring=True,
spoke_width=spoke_width, mount_hole=self.shaft,
profile_shift=profile_shift, move="up")
for i in range(numplanets):
self.gears(teeth=self.planetteeth, dimension=self.modulus,
angle=pressure_angle,
mount_hole=self.shaft, profile_shift=profile_shift, move="up")