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Add front stabilization bracket

This commit is contained in:
Leni Aniva 2025-06-01 22:52:13 -07:00
parent d6ccc3496b
commit 0a4ca64dad
Signed by: aniva
GPG Key ID: D5F96287843E8DFB
1 changed files with 115 additions and 25 deletions
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140
nhf/touhou/yasaka_kanako/onbashira.py
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@ -236,6 +236,10 @@ class Onbashira(Model):
section1_gohei_loc: float = 30.0
gohei_bolt_diam: float = 6.0
# Extension from each gohei bolt's centre
front_bracket_ext: float = 6.0
front_bracket_depth: float = 15.0
front_bracket_thickness: float = 6.0
magnet_size: float = 6.0
@ -275,7 +279,7 @@ class Onbashira(Model):
barrel_wall_thickness: float = 25.4 / 8
barrel_length: float = 25.4 * 12
# Longitudinal shift
barrel_shift: float = -20.0
barrel_shift: float = 30.0
# Gap between the stator edge and the inner face of the barrel
stator_gap: float = 3.0
@ -291,6 +295,8 @@ class Onbashira(Model):
bearing_spindle_max_diam: float = 16.0
bearing_spindle_ext: float = 5.0
bearing_spindle_gap: float = 0.2
bearing_spindle_tail: float = 4.0
bearing_spindle_tail_diam: float = 6.0
bearing_gasket_extend: float = 12.0
bearing_disk_thickness: float = 25.4 / 16
@ -373,12 +379,18 @@ class Onbashira(Model):
def angle_side(self) -> float:
return 360 / self.n_side
@property
def delta_side_width(self) -> float:
def ratio_side_width(self) -> float:
"""
Difference between interior and exterior side width due to side thickness
"""
theta = math.pi / self.n_side
dt = self.side_thickness * math.tan(theta)
return math.tan(theta)
@property
def delta_side_width(self) -> float:
"""
Difference between interior and exterior side width due to side thickness
"""
dt = self.side_thickness * self.ratio_side_width
return dt * 2
@property
def side_width_inner(self) -> float:
@ -701,8 +713,8 @@ class Onbashira(Model):
for i in range(self.n_side):
angle = (i+0.5) * th1
result.faces(">Z").moveTo(
br * math.cos(angle),
br * math.sin(angle),
br * math.cos(-angle),
br * math.sin(-angle),
).tagPlane(f"holeF{i}")
result.faces("<Z").moveTo(
br * math.cos(-angle),
@ -803,6 +815,7 @@ class Onbashira(Model):
r1 = self.bearing_gap / 2
r2 = self.bearing_spindle_max_diam / 2
h = self.bearing_disk_gap
h2 = self.bearing_spindle_ext + self.bearing_disk_thickness - self.bearing_spindle_tail
cone = Cq.Solid.makeCone(
radius1=r2,
radius2=r1,
@ -810,14 +823,22 @@ class Onbashira(Model):
)
cyl = Cq.Solid.makeCylinder(
radius=r1,
height=self.bearing_spindle_ext + self.bearing_disk_thickness,
height=h2,
pnt=(0, 0, h/2)
)
tail = Cq.Solid.makeCone(
radius1=r1,
radius2=self.bearing_spindle_tail_diam/2,
height=self.bearing_spindle_tail,
pnt=(0, 0, h/2 + h2),
)
assert self.bearing_spindle_tail < self.bearing_spindle_ext
assert self.bearing_spindle_tail_diam > BOLT_BEARING.diam_thread
hole = Cq.Solid.makeCylinder(
radius=(BOLT_BEARING.diam_thread + self.bearing_spindle_gap)/2,
height=h*4
).moved(0, 0, -h*2)
top = cone + cyl - hole
height=self.bearing_spindle_height
).moved(0, 0, -self.bearing_spindle_height/2)
top = cone + cyl + tail - hole
return top + top.mirror("XY")
def barrel(self) -> Cq.Compound:
@ -1429,6 +1450,51 @@ class Onbashira(Model):
### Side Panels
@target(name="front-bracket")
def front_bracket(self) -> Cq.Workplane:
assert self.front_bracket_ext > self.gohei_bolt_diam / 2
assert self.front_bracket_depth > self.gohei_bolt_diam
x0 = self.bulk_radius
y0 = x0 * math.tan(2 * math.pi / self.n_side)
s1 = self.side_width_inner
s2 = s1 - self.front_bracket_thickness * self.ratio_side_width
result = (
Cq.Workplane()
.sketch()
.regularPolygon(s1, self.n_side)
.regularPolygon(s2, self.n_side, mode="s")
.polygon([
(0, 0),
(x0, 0),
(x0, y0),
], mode="i")
.finalize()
.extrude(self.front_bracket_depth)
.translate((0, 0, -self.front_bracket_depth/2))
)
hole_subtractor = Cq.Solid.makeCylinder(
radius=BOLT_COMMON.diam_thread/2,
height=self.bulk_radius,
dir=(1, 0, 0)
)
result -= hole_subtractor
angle = 360 / self.n_side
result -= hole_subtractor.rotate((0,0,0), (0, 0, 1), angle)
loc_rot = Cq.Location.rot2d(angle)
r1 = self.bulk_radius - self.side_thickness
result.tagAbsolute("holeT1", (r1, 0, 0), direction="+X")
loc_ht1 = (loc_rot * Cq.Location(r1, 0, 0)).toTuple()[0]
result.tagAbsolute("holeT2", loc_ht1, direction=loc_ht1)
return result
@target(name="front-bracket-large")
def front_bracket_large(self) -> Cq.Workplane:
"""
Optional alternative that is a bit bigger
"""
result = self.front_bracket()
return result + result.mirror("XZ")
def profile_side_panel(
self,
length: float,
@ -1546,8 +1612,12 @@ class Onbashira(Model):
result.tagAbsolute(f"holeBSI{i}", (-px, -py, t), direction="+Z")
result.tagAbsolute(f"holeBPO{i}", (+px, -py, 0), direction="-Z")
result.tagAbsolute(f"holeBSO{i}", (-px, -py, 0), direction="-Z")
# Mark the gohei attachment points
y_gohei = self.side_length1/2 - self.section1_gohei_loc
result.tagAbsolute(f"holeGoheiB", (0, y_gohei, t), direction="+Z")
result.tagAbsolute(f"holeGoheiF", (0, y_gohei, 0), direction="-Z")
return result
@target(name="side-panel2", kind=TargetKind.DXF)
def profile_side_panel2(self) -> Cq.Sketch:
return (
@ -1579,7 +1649,26 @@ class Onbashira(Model):
role=Role.STRUCTURE | Role.DECORATION,
loc=Cq.Location.rot2d(i*360/self.n_side) * Cq.Location(-r,0,0,90,0,90),
)
return a
a = a.constrain(f"side{i}", "Fixed")
for i in range(self.n_side):
i1 = (i + 1) % self.n_side
name_bracket = f"front_bracket{i}"
a = a.addS(
self.front_bracket(),
name=name_bracket,
role=Role.STRUCTURE,
)
a = a.constrain(
f"side{i1}?holeGoheiB",
f"{name_bracket}?holeT1",
"Plane",
)
a = a.constrain(
f"side{i}?holeGoheiB",
f"{name_bracket}?holeT2",
"Plane",
)
return a.solve()
def assembly_section(self, **kwargs) -> Cq.Assembly:
a = Cq.Assembly()
side = self.side_panel(**kwargs)
@ -2335,6 +2424,7 @@ class Onbashira(Model):
a = a.add(self.assembly_machine(), name="machine")
if has_part(parts, "electronics1"):
a = a.add(self.assembly_electronics1(), name="electronics1")
a = a.constrain("electronics1/controller", "Fixed")
if has_part(parts, ["electronics1", "ring3"]):
a = a.constrain(
f"electronics1/barL?holeBO2",
@ -2374,27 +2464,27 @@ class Onbashira(Model):
)
a = a.constrain(
f"{coupler_name}?holeOB",
f"ring1/side{i}?holeStatorL",
f"ring1/side{i}?holeStatorR",
"Plane",
)
a = a.constrain(
f"{coupler_name}?holeIF",
f"machine/stator2?holeB{ir}",
f"machine/stator1?holeF{ir}",
"Plane",
)
name_bolt =f"stator_outer_bolt{i}"
a = a.addS(
BOLT_LONG.generate(),
name=name_bolt,
material=self.material_fastener,
role=Role.CONNECTION,
)
a = a.constrain(
f"{coupler_name}?holeOF",
f"{name_bolt}?root",
"Plane",
)
#name_bolt =f"stator_outer_bolt{i}"
#a = a.addS(
# BOLT_LONG.generate(),
# name=name_bolt,
# material=self.material_fastener,
# role=Role.CONNECTION,
#)
#a = a.constrain(
# f"{coupler_name}?holeOF",
# f"{name_bolt}?root",
# "Plane",
#)
name_bolt =f"chamber_back{i}boltFPI{i}"
a = a.addS(