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add head-fillet for cycloid gear racks

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looooo
2022-02-02 23:33:47 +01:00
parent 9f1e87bedb
commit 39e5ce1378
1 changed files with 16 additions and 0 deletions
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16
freecad/gears/features.py
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@@ -539,6 +539,10 @@ class InvoluteGearRack(BaseGear):
obj.addProperty(
"App::PropertyAngle", "pressure_angle", "involute", "pressure angle")
def add_fillet_properties(self, obj):
obj.addProperty("App::PropertyFloat", "head_fillet", "fillets", "a fillet for the tooth-head, radius = head_fillet x module")
obj.addProperty("App::PropertyFloat", "root_fillet", "fillets", "a fillet for the tooth-root, radius = root_fillet x module")
def generate_gear_shape(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
@@ -614,6 +618,7 @@ class CycloidGearRack(BaseGear):
self.add_computed_properties(obj)
self.add_tolerance_properties(obj)
self.add_cycloid_properties(obj)
self.add_fillet_properties(obj)
obj.teeth = 15
obj.module = '1. mm'
obj.inner_diameter = 7.5
@@ -651,6 +656,10 @@ class CycloidGearRack(BaseGear):
obj.addProperty("App::PropertyFloat", "inner_diameter", "cycloid", "inner_diameter divided by module (hypocycloid)")
obj.addProperty("App::PropertyFloat", "outer_diameter", "cycloid", "outer_diameter divided by module (epicycloid)")
def add_fillet_properties(self, obj):
obj.addProperty("App::PropertyFloat", "head_fillet", "fillets", "a fillet for the tooth-head, radius = head_fillet x module")
obj.addProperty("App::PropertyFloat", "root_fillet", "fillets", "a fillet for the tooth-root, radius = root_fillet x module")
def generate_gear_shape(self, obj):
numpoints = obj.numpoints
m = obj.module.Value
@@ -675,6 +684,13 @@ class CycloidGearRack(BaseGear):
line_1 = [points[-1], points_1[0]]
line_2 = [points_1[-1], points[0] + np.array([0., m * np.pi])]
tooth = points_to_wire([points, line_1, points_1, line_2])
head_fillet = obj.head_fillet
if head_fillet != 0:
edges = tooth.Edges
fillet1 = fillet_between_edges(edges[0], edges[1], m * head_fillet)
fillet2 = fillet_between_edges(fillet1[-1], edges[2], m * head_fillet)
tooth = Wire(fillet1[:-1] + fillet2 + edges[3:])
teeth = [tooth]
for i in range(obj.teeth - 1):
tooth = copy.deepcopy(tooth)