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feat: Rod assembly

This commit is contained in:
Leni Aniva 2024-11-20 23:21:37 -08:00
parent dbf374fe20
commit 21b3c98856
Signed by: aniva
GPG Key ID: 4D9B1C8D10EA4C50
1 changed files with 282 additions and 20 deletions
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302
nhf/touhou/shiki_eiki/rod.py
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@ -1,5 +1,6 @@
import math
from dataclasses import dataclass, field
from typing import Tuple
import cadquery as Cq
from nhf import Material, Role
from nhf.build import Model, target, assembly, TargetKind
@ -14,8 +15,15 @@ class Rod(Model):
width_tail: float = 60.0
margin: float = 10.0
thickness_top: float = 25.4 / 4
thickness_side: float = 25.4 / 8
thickness_top: float = 25.4 / 8
# The side which has mounted hinges must be thicker
thickness_side: float = 25.4 / 4
height_internal: float = 30.0
material_shell: Material = Material.WOOD_BIRCH
# Considering the glyph on the top ...
# counted from middle to the bottom
fac_bar_top: float = 0.1
@ -23,10 +31,21 @@ class Rod(Model):
fac_window_tsumi_bot: float = 0.63
fac_window_tsumi_top: float = 0.88
fac_window_footer_bot: float = 0.33
fac_window_footer_top: float = 0.59
fac_window_footer_bot: float = 0.36
fac_window_footer_top: float = 0.6
material_shell: Material = Material.WOOD_BIRCH
# Considering the side ...
hinge_plate_pos: list[float] = field(default_factory=lambda: [0.1, 0.9])
hinge_plate_length: float = 30.0
hinge_hole_diam: float = 2.5
# Hole distance to axis
hinge_hole_axis_dist: float = 12.5 / 2
# Distance between holes
hinge_hole_sep: float = 15.89
# Consider the reference objects
ref_object_width: float = 50.0
ref_object_length: float = 50.0
def __post_init__(self):
super().__init__(name="rod")
@ -49,6 +68,18 @@ class Rod(Model):
def _reduced_tail_y(self):
return self.width_tail / 2 - self.margin
def profile_points(self) -> list[Tuple[str, Tuple[float, float]]]:
"""
Points in polygon line order, labaled
"""
return [
("tip", (self.length, 0)),
("mid_r", (self.length - self.length_tip, self.width/2)),
("bot_r", (0, self.width_tail / 2)),
("bot_l", (0, -self.width_tail / 2)),
("mid_l", (self.length - self.length_tip, -self.width/2)),
]
def _window_tip(self) -> Cq.Sketch:
dxh = self._reduced_tip_x
dy = self._reduced_y
@ -173,7 +204,7 @@ class Rod(Model):
y_skip = dy_eye + dy_border
# Construction of the bottom part
x_bot = dx * 0.6
x_bot = dx * 0.65
y3 = dy * 0.4
y2 = dy * 0.2
y1 = dy * 0.1
@ -280,21 +311,17 @@ class Rod(Model):
.moved(loc)
)
@target(name="surface", kind=TargetKind.DXF)
def profile_top(self) -> Cq.Sketch:
sketch = (
@target(name="bottom", kind=TargetKind.DXF)
def profile_bottom(self) -> Cq.Sketch:
return (
Cq.Sketch()
.polygon([
(self.length, 0),
(self.length - self.length_tip, self.width/2),
(0, self.width_tail / 2),
(0, -self.width_tail / 2),
(self.length - self.length_tip, -self.width/2),
])
.polygon([p for _, p in self.profile_points()])
)
sketch = (
sketch
@target(name="top", kind=TargetKind.DXF)
def profile_top(self) -> Cq.Sketch:
return (
self.profile_bottom()
.boolean(self._window_tip(), mode='s')
.boolean(self._window_eye(True), mode='s')
.boolean(self._window_eye(False), mode='s')
@ -302,15 +329,200 @@ class Rod(Model):
.boolean(self._window_tsumi(), mode='s')
.boolean(self._window_footer(), mode='s')
)
return sketch
def surface_top(self) -> Cq.Workplane:
return (
Cq.Workplane('XZ')
Cq.Workplane('XY')
.placeSketch(self.profile_top())
.extrude(self.thickness_top)
)
def surface_bottom(self) -> Cq.Workplane:
surface = (
Cq.Workplane('XY')
.placeSketch(self.profile_bottom())
.extrude(self.thickness_top)
)
plane = surface.faces(">Z").workplane()
for (name, p) in self.profile_points():
plane.moveTo(*p).tagPlane(name)
return surface
# Properties of the side surfaces
@property
def length_edge_tip(self):
return math.sqrt(self.length_tip ** 2 + (self.width / 2) ** 2)
@property
def length_edge_tail(self):
dw = (self.width - self.width_tail) / 2
return math.sqrt(self.length_tail ** 2 + dw ** 2)
@property
def tip_incident_angle(self):
"""
Angle (measuring from vertical) at which the tip edge pieces must be
sanded in order to make them not collide into each other.
"""
return math.atan2(self.length_tip, self.width / 2)
@property
def shoulder_incident_angle(self) -> float:
angle_tip = math.atan2(self.width / 2, self.length_tip)
angle_tail = math.atan2((self.width - self.width_tail) / 2, self.length_tail)
return (angle_tip + angle_tail) / 2
@target(name="ref-tip")
def ref_tip(self) -> Cq.Workplane:
angle = self.tip_incident_angle
w = self.ref_object_width
drop = math.sin(angle) * w
profile = (
Cq.Sketch()
.polygon([
(0, 0),
(0, w),
(w, w),
(w - drop, 0),
])
)
return (
Cq.Workplane()
.placeSketch(profile)
.extrude(self.ref_object_length)
)
@target(name="ref-shoulder")
def ref_shoulder(self) -> Cq.Workplane:
angle = self.shoulder_incident_angle
w = self.ref_object_width
drop = math.sin(angle) * w
profile = (
Cq.Sketch()
.polygon([
(0, 0),
(0, w),
(w, w),
(w - drop, 0),
])
)
return (
Cq.Workplane()
.placeSketch(profile)
.extrude(self.ref_object_length)
)
@target(name="side-tip-2x", kind=TargetKind.DXF)
def profile_side_tip(self):
l = self.length_edge_tip
w = self.height_internal
return (
Cq.Sketch()
.push([(l/2, w/2)])
.rect(l, w)
)
@target(name="side-tail", kind=TargetKind.DXF)
def profile_side_tail(self):
"""
Plain side 2 with no hinge
"""
l = self.length_edge_tail
w = self.height_internal
return (
Cq.Sketch()
.push([(l/2, w/2)])
.rect(l, w)
)
@target(name="side-hinge-plate", kind=TargetKind.DXF)
def profile_side_hinge_plate(self):
l = self.hinge_plate_length
w = self.height_internal / 2
return (
Cq.Sketch()
.push([(l/2, w/2)])
.rect(l, w)
.push([
(self.hinge_hole_sep / 2, self.hinge_hole_axis_dist),
(-self.hinge_hole_sep / 2, self.hinge_hole_axis_dist),
])
.circle(self.hinge_hole_diam / 2, mode='s')
)
@target(name="side-tail-hinged", kind=TargetKind.DXF)
def profile_side_tail_hinged(self):
"""
Plain side 2 with no hinge
"""
l = self.length_edge_tail
w = self.height_internal
# Holes for hinge
plate_pos = [
(t * l, w * 3/4) for t in self.hinge_plate_pos
]
hole_pos = [
(self.hinge_hole_sep / 2, self.hinge_hole_axis_dist),
(-self.hinge_hole_sep / 2, self.hinge_hole_axis_dist),
]
return (
self.profile_side_tail()
.push(plate_pos)
.rect(self.hinge_plate_length, w/2, mode='s')
.push([
(hx + px, w/2 - hy)
for hx, hy in hole_pos
for px, _ in plate_pos
])
.circle(self.hinge_hole_diam / 2, mode='s')
)
@target(name="side-bot", kind=TargetKind.DXF)
def profile_side_bot(self):
l = self.width_tail - self.thickness_side * 2
w = self.height_internal
return (
Cq.Sketch()
.rect(l, w)
)
def surface_side_tip(self):
result = (
Cq.Workplane('XY')
.placeSketch(self.profile_side_tip())
.extrude(self.thickness_side)
)
plane = result.faces(">Y").workplane()
plane.moveTo(0, 0).tagPlane("bot")
plane.moveTo(-self.length_edge_tip, 0).tagPlane("top")
return result
def surface_side_tail(self):
result = (
Cq.Workplane('XY')
.placeSketch(self.profile_side_tail())
.extrude(self.thickness_side)
)
plane = result.faces(">Y").workplane()
plane.moveTo(0, 0).tagPlane("bot")
plane.moveTo(-self.length_edge_tail, 0).tagPlane("top")
return result
def surface_side_tail_hinged(self):
result = (
Cq.Workplane('XY')
.placeSketch(self.profile_side_tail_hinged())
.extrude(self.thickness_side)
)
plane = result.faces(">Y").workplane()
plane.moveTo(0, 0).tagPlane("bot")
plane.moveTo(-self.length_edge_tail, 0).tagPlane("top")
return result
def surface_side_bot(self):
result = (
Cq.Workplane('XY')
.placeSketch(self.profile_side_bot())
.extrude(self.thickness_side)
)
plane = result.faces(">Y").workplane()
plane.moveTo(self.width_tail / 2, 0).tagPlane("bot")
plane.moveTo(-self.width_tail / 2, 0).tagPlane("top")
return result
@assembly()
def assembly(self) -> Cq.Assembly:
a = (
@ -321,5 +533,55 @@ class Rod(Model):
material=self.material_shell,
role=Role.STRUCTURE | Role.DECORATION
)
.constrain("top", "Fixed")
.addS(
self.surface_bottom(),
name="bottom",
material=self.material_shell,
role=Role.STRUCTURE,
loc=Cq.Location(0, 0, -self.thickness_top - self.height_internal)
)
.constrain("bottom", "Fixed")
.addS(
self.surface_side_tip(),
name="side_tip_l",
material=self.material_shell,
role=Role.STRUCTURE,
)
.constrain("bottom?tip", "side_tip_l?top", "Plane")
.constrain("bottom?mid_l", "side_tip_l?bot", "Plane")
.addS(
self.surface_side_tip(),
name="side_tip_r",
material=self.material_shell,
role=Role.STRUCTURE,
)
.constrain("bottom?tip", "side_tip_r?bot", "Plane")
.constrain("bottom?mid_r", "side_tip_r?top", "Plane")
.addS(
self.surface_side_tail(),
name="side_tail_l",
material=self.material_shell,
role=Role.STRUCTURE,
)
.constrain("bottom?mid_l", "side_tail_l?top", "Plane")
.constrain("bottom?bot_l", "side_tail_l?bot", "Plane")
.addS(
self.surface_side_tail_hinged(),
name="side_tail_r",
material=self.material_shell,
role=Role.STRUCTURE,
)
.constrain("bottom?mid_r", "side_tail_r?bot", "Plane")
.constrain("bottom?bot_r", "side_tail_r?top", "Plane")
.addS(
self.surface_side_bot(),
name="side_bot",
material=self.material_shell,
role=Role.STRUCTURE,
)
.constrain("bottom?bot_l", "side_bot?top", "Plane")
.constrain("bottom?bot_r", "side_bot?bot", "Plane")
.solve()
)
return a