def helicalextrusion(wire, height, angle):
face_a = Face(wire)
face_b = face_a.copy()
face_transform = App.Matrix()
face_transform.rotateZ(angle)
face_transform.move(App.Vector(0,0,height))
face_b . transformShape(face_transform)
step = 2 + int(angle / pi * 4 )
angleinc = angle / (step - 1)
zinc = height / (step-1)
spine = makePolygon([(0, 0, i * zinc) for i in range(step)])
auxspine = makePolygon(
[
(cos(i * angleinc),
sin(i * angleinc),
i * height/(step-1))for i in range(step)
])
faces=[face_a,face_b ]
pipeshell = BRepOffsetAPI.MakePipeShell(spine)
pipeshell.setSpineSupport(spine)
pipeshell.add(wire)
pipeshell.setAuxiliarySpine(auxspine,True,False)
assert(pipeshell.isReady())
pipeshell.build()
faces.extend(pipeshell.shape().Faces)
fullshell = Shell(faces)
solid = Solid(fullshell)
if solid.Volume < 0:
solid.reverse()
assert(solid.Volume >= 0)
return(solid)
def execute(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
fp.rack.pressure_angle = fp.pressure_angle.Value * np.pi / 180.
fp.rack.thickness = fp.thickness.Value
fp.rack.beta = fp.beta.Value * np.pi / 180.
fp.rack.head = fp.head
fp.rack._update()
pts = fp.rack.points()
pol = Wire(makePolygon(list(map(fcvec, pts))))
if fp.beta.Value == 0:
face = Face(Wire(pol))
fp.Shape = face.extrude(fcvec([0., 0., fp.height.Value]))
elif fp.double_helix:
beta = fp.beta.Value * np.pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(fcvec([0., np.tan(beta) * fp.height.Value / 2, fp.height.Value / 2]))
pol3 = Part.Wire(pol)
pol3.translate(fcvec([0., 0., fp.height.Value]))
fp.Shape = makeLoft([pol, pol2, pol3], True, True)
else:
beta = fp.beta.Value * np.pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(fcvec([0., np.tan(beta) * fp.height.Value, fp.height.Value]))
fp.Shape = makeLoft([pol, pol2], True)
def execute(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
fp.rack.pressure_angle = fp.pressure_angle.Value * pi / 180.
fp.rack.thickness = fp.thickness.Value
fp.rack.beta = fp.beta.Value * pi / 180.
fp.rack.head = fp.head
fp.rack._update()
pts = fp.rack.points()
pol = Wire(makePolygon(list(map(fcvec, pts))))
if fp.beta.Value == 0:
face = Face(Wire(pol))
fp.Shape = face.extrude(fcvec([0., 0., fp.height.Value]))
elif fp.double_helix:
beta = fp.beta.Value * pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(
fcvec(
[0.,
tan(beta) * fp.height.Value / 2, fp.height.Value / 2]))
pol3 = Part.Wire(pol)
pol3.translate(fcvec([0., 0., fp.height.Value]))
fp.Shape = makeLoft([pol, pol2, pol3], True, True)
else:
beta = fp.beta.Value * pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(
fcvec([0., tan(beta) * fp.height.Value, fp.height.Value]))
fp.Shape = makeLoft([pol, pol2], True)
def execute(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
fp.rack.alpha = fp.alpha.Value * pi / 180.
fp.rack.thickness = fp.thickness.Value
fp.rack._update()
pts = fp.rack.points()
pol = Wire(makePolygon(map(fcvec, pts)))
fp.Shape = Face(Wire(pol)).extrude(fcvec([0., 0., fp.height]))
def execute(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
fp.rack.pressure_angle = fp.pressure_angle.Value * pi / 180.
fp.rack.thickness = fp.thickness.Value
fp.rack._update()
pts = fp.rack.points()
pol = Wire(makePolygon(list(map(fcvec, pts))))
fp.Shape = Face(Wire(pol)).extrude(fcvec([0., 0., fp.height]))
def execute(self, fp):
fp.rack.m = fp.module.Value
fp.rack.z = fp.teeth
fp.rack.pressure_angle = fp.pressure_angle.Value * np.pi / 180.
fp.rack.thickness = fp.thickness.Value
fp.rack.beta = fp.beta.Value * np.pi / 180.
fp.rack.head = fp.head
# checksbackwardcompatibility:
if "clearance" in fp.PropertiesList:
fp.rack.clearance = fp.clearance
if "properties_from_tool" in fp.PropertiesList:
fp.rack.properties_from_tool = fp.properties_from_tool
if "add_endings" in fp.PropertiesList:
fp.rack.add_endings = fp.add_endings
if "simplified" in fp.PropertiesList:
fp.rack.simplified = fp.simplified
fp.rack._update()
pts = fp.rack.points()
pol = Wire(makePolygon(list(map(fcvec, pts))))
if fp.height.Value == 0:
fp.Shape = pol
elif fp.beta.Value == 0:
face = Face(Wire(pol))
fp.Shape = face.extrude(fcvec([0., 0., fp.height.Value]))
elif fp.double_helix:
beta = fp.beta.Value * np.pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(
fcvec([
0.,
np.tan(beta) * fp.height.Value / 2, fp.height.Value / 2
]))
pol3 = Part.Wire(pol)
pol3.translate(fcvec([0., 0., fp.height.Value]))
fp.Shape = makeLoft([pol, pol2, pol3], True, True)
else:
beta = fp.beta.Value * np.pi / 180.
pol2 = Part.Wire(pol)
pol2.translate(
fcvec([0., np.tan(beta) * fp.height.Value, fp.height.Value]))
fp.Shape = makeLoft([pol, pol2], True)
# computed properties
if "transverse_pitch" in fp.PropertiesList:
fp.transverse_pitch = "{} mm".format(
fp.rack.compute_properties()[2])
def execute(self, fp):
super(CrownGear, self).execute(fp)
inner_diameter = fp.module.Value * fp.teeth
outer_diameter = inner_diameter + fp.height.Value * 2
inner_circle = Part.Wire(Part.makeCircle(inner_diameter / 2.))
outer_circle = Part.Wire(Part.makeCircle(outer_diameter / 2.))
inner_circle.reverse()
face = Part.Face([outer_circle, inner_circle])
solid = face.extrude(App.Vector([0., 0., -fp.thickness.Value]))
# cutting obj
alpha_w = np.deg2rad(fp.pressure_angle.Value)
m = fp.module.Value
t = fp.teeth
t_c = t
t_i = fp.other_teeth
rm = inner_diameter / 2
y0 = m * 0.5
y1 = m + y0
y2 = m
r0 = inner_diameter / 2 - fp.height.Value * 0.1
r1 = outer_diameter / 2 + fp.height.Value * 0.3
polies = []
for r_i in np.linspace(r0, r1, fp.num_profiles):
pts = self.profile(m, r_i, rm, t_c, t_i, alpha_w, y0, y1, y2)
poly = Wire(makePolygon(list(map(fcvec, pts))))
polies.append(poly)
loft = makeLoft(polies, True)
rot = App.Matrix()
rot.rotateZ(2 * np.pi / t)
if fp.preview_mode:
cut_shapes = [solid]
for _ in range(t):
loft = loft.transformGeometry(rot)
cut_shapes.append(loft)
fp.Shape = Part.Compound(cut_shapes)
else:
for i in range(t):
loft = loft.transformGeometry(rot)
solid = solid.cut(loft)
fp.Shape = solid
def execute(self, fp):
inner_diameter = fp.module.Value * fp.teeth
outer_diameter = inner_diameter + fp.height.Value * 2
inner_circle = Part.Wire(Part.makeCircle(inner_diameter / 2.))
outer_circle = Part.Wire(Part.makeCircle(outer_diameter / 2.))
inner_circle.reverse()
face = Part.Face([outer_circle, inner_circle])
solid = face.extrude(App.Vector([0., 0., -fp.thickness.Value]))
### cutting obj
alpha_w = np.deg2rad(fp.pressure_angle.Value)
m = fp.module.Value
t = fp.teeth
t_c = t
t_i = fp.other_teeth
rm = inner_diameter / 2
y0 = m * 0.5
y1 = m + y0
y2 = m
r0 = inner_diameter / 2 - fp.height.Value * 0.1
r1 = outer_diameter / 2 + fp.height.Value * 0.3
polies = []
for r_i in np.linspace(r0, r1, fp.num_profiles):
pts = self.profile(m, r_i, rm, t_c, t_i, alpha_w, y0, y1, y2)
poly = Wire(makePolygon(list(map(fcvec, pts))))
polies.append(poly)
loft = makeLoft(polies, True)
rot = App.Matrix()
rot.rotateZ(2 * np.pi / t)
if fp.construct:
cut_shapes = [solid]
for _ in range(t):
loft = loft.transformGeometry(rot)
cut_shapes.append(loft)
fp.Shape = Part.Compound(cut_shapes)
else:
for i in range(t):
loft = loft.transformGeometry(rot)
solid = solid.cut(loft)
fp.Shape = solid
def execute(self, fp):
b = fp.pin_circle_diameter
d = fp.roller_diameter
e = fp.eccentricity
n = fp.teeth_number
p = b / n
s = fp.segment_count
ang = fp.pressure_angle_lim
c = fp.pressure_angle_offset
q = 2 * math.pi / float(s)
# Find the pressure angle limit circles
minAngle = -1.0
maxAngle = -1.0
for i in range(0, 180):
x = self.calcPressureAngle(p, d, n, float(i) * math.pi / 180)
if (x < ang) and (minAngle < 0):
minAngle = float(i)
if (x < -ang) and (maxAngle < 0):
maxAngle = float(i - 1)
minRadius = self.calcPressureLimit(p, d, e, n,
minAngle * math.pi / 180)
maxRadius = self.calcPressureLimit(p, d, e, n,
maxAngle * math.pi / 180)
Wire(Part.makeCircle(minRadius, App.Vector(-e, 0, 0)))
Wire(Part.makeCircle(maxRadius, App.Vector(-e, 0, 0)))
App.Console.PrintMessage("Generating cam disk\r\n")
#generate the cam profile - note: shifted in -x by eccentricicy amount
i = 0
x = self.calcX(p, d, e, n, q * i)
y = self.calcY(p, d, e, n, q * i)
x, y = self.checkLimit(x, y, maxRadius, minRadius, c)
points = [App.Vector(x - e, y, 0)]
for i in range(0, s):
x = self.calcX(p, d, e, n, q * (i + 1))
y = self.calcY(p, d, e, n, q * (i + 1))
x, y = self.checkLimit(x, y, maxRadius, minRadius, c)
points.append(App.Vector(x - e, y, 0))
cam = Face(Wire(makePolygon(points)))
#add a circle in the center of the cam
centerCircle = Face(
Wire(Part.makeCircle(fp.hole_radius.Value, App.Vector(-e, 0, 0))))
cam = cam.cut(centerCircle)
to_be_fused = []
if fp.show_disk0 == True:
if fp.disk_height.Value == 0:
to_be_fused.append(cam)
else:
to_be_fused.append(
cam.extrude(App.Vector(0, 0, fp.disk_height.Value)))
#secondary cam disk
if fp.show_disk1 == True:
App.Console.PrintMessage("Generating secondary cam disk\r\n")
second_cam = cam.copy()
mat = App.Matrix()
mat.rotateZ(np.pi)
mat.move(App.Vector(-e, 0, 0))
mat.rotateZ(np.pi / n)
mat.move(App.Vector(e, 0, 0))
second_cam = second_cam.transformGeometry(mat)
if fp.disk_height.Value == 0:
to_be_fused.append(second_cam)
else:
to_be_fused.append(
second_cam.extrude(App.Vector(0, 0,
-fp.disk_height.Value)))
#pins
if fp.show_pins == True:
App.Console.PrintMessage("Generating pins\r\n")
pins = []
for i in range(0, n + 1):
x = p * n * math.cos(2 * math.pi / (n + 1) * i)
y = p * n * math.sin(2 * math.pi / (n + 1) * i)
pins.append(Wire(Part.makeCircle(d / 2, App.Vector(x, y, 0))))
pins = Face(pins)
z_offset = -fp.pin_height.Value / 2
if fp.center_pins == True:
if fp.show_disk0 == True and fp.show_disk1 == False:
z_offset += fp.disk_height.Value / 2
elif fp.show_disk0 == False and fp.show_disk1 == True:
z_offset += -fp.disk_height.Value / 2
#extrude
if z_offset != 0:
pins.translate(App.Vector(0, 0, z_offset))
if fp.pin_height != 0:
pins = pins.extrude(App.Vector(0, 0, fp.pin_height.Value))
to_be_fused.append(pins)
if to_be_fused:
fp.Shape = Part.makeCompound(to_be_fused)
