cosplay: Touhou/Houjuu Nue #4
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@ -25,7 +25,7 @@ class Harness(Model):
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hs_hirth_joint: HirthJoint = field(default_factory=lambda: HirthJoint(
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radius=25.0,
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radius_inner=20.0,
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radius_inner=15.0,
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tooth_height=7.0,
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base_height=5.0,
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n_tooth=24,
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@ -6,7 +6,7 @@ from nhf import Material, Role
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from nhf.build import Model, target, assembly
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from nhf.parts.springs import TorsionSpring
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from nhf.parts.joints import TorsionJoint
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from nhf.parts.box import box_with_centre_holes
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from nhf.parts.box import Hole, MountingBox, box_with_centre_holes
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import nhf.utils
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TOL = 1e-6
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@ -37,16 +37,18 @@ class ShoulderJoint(Model):
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# On the parent side, drill vertical holes
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parent_conn_hole_diam: float = 4.0
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parent_conn_hole_diam: float = 6.0
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# Position of the holes relative
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parent_conn_hole_pos: list[float] = field(default_factory=lambda: [15])
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parent_conn_hole_pos: list[Tuple[float, float]] = field(default_factory=lambda: [
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(15, 8),
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(15, -8),
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])
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parent_lip_length: float = 25.0
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parent_lip_width: float = 30.0
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parent_lip_thickness: float = 5.0
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parent_lip_ext: float = 40.0
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parent_lip_guard_height: float = 8.0
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parent_root_wall_thickness: float = 25.4 / 16
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# Measured from centre of axle
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child_lip_length: float = 45.0
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@ -68,7 +70,6 @@ class ShoulderJoint(Model):
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def parent(self, top: bool = False) -> Cq.Assembly:
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joint = self.torsion_joint
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# Thickness of the lip connecting this joint to the wing root
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dz = self.parent_root_wall_thickness
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assert self.parent_lip_width <= joint.radius_track * 2
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assert self.parent_lip_ext > joint.radius_track
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@ -77,24 +78,25 @@ class ShoulderJoint(Model):
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self.parent_lip_ext,
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self.parent_lip_width,
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self.parent_lip_guard_height)
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.located(Cq.Location((0, -self.parent_lip_width/2 , dz)))
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.cut(Cq.Solid.makeCylinder(joint.radius_track, self.parent_lip_guard_height + dz))
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.located(Cq.Location((0, -self.parent_lip_width/2 , 0)))
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.cut(Cq.Solid.makeCylinder(joint.radius_track, self.parent_lip_guard_height))
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)
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lip = box_with_centre_holes(
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length=self.parent_lip_length - dz,
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lip = MountingBox(
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length=self.parent_lip_length,
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width=self.parent_lip_width,
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height=self.parent_lip_thickness,
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hole_loc=[
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self.height / 2 - dz - x
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for x in self.parent_conn_hole_pos
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thickness=self.parent_lip_thickness,
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holes=[
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Hole(x=self.height / 2 - x, y=y)
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for x, y in self.parent_conn_hole_pos
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],
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hole_diam=self.parent_conn_hole_diam,
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generate_side_tags=False,
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)
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# Flip so the lip's holes point to -X
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loc_axis = Cq.Location((0,0,0), (0, 1, 0), -90)
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# so they point to +X
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loc_dir = Cq.Location((0,0,0), (0, 0, 1), 180)
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loc_pos = Cq.Location((self.parent_lip_ext - self.parent_lip_thickness, 0, dz))
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loc_pos = Cq.Location((self.parent_lip_ext - self.parent_lip_thickness, 0, 0))
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rot = -self.axis_rotate_top if top else self.axis_rotate_bot
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@ -103,7 +105,7 @@ class ShoulderJoint(Model):
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.add(joint.track(), name="track",
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loc=Cq.Location((0, 0, 0), (0, 0, 1), rot))
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.add(lip_guard, name="lip_guard")
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.add(lip, name="lip", loc=loc_pos * loc_dir * loc_axis)
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.add(lip.generate(), name="lip", loc=loc_pos * loc_dir * loc_axis)
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)
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return result
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@ -21,7 +21,7 @@ class WingProfile(Model):
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base_joint: HirthJoint = field(default_factory=lambda: HirthJoint(
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radius=25.0,
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radius_inner=20.0,
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radius_inner=15.0,
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tooth_height=7.0,
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base_height=5,
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n_tooth=24,
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@ -38,7 +38,7 @@ class WingProfile(Model):
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shoulder_joint: ShoulderJoint = field(default_factory=lambda: ShoulderJoint(
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))
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shoulder_width: float = 30.0
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shoulder_width: float = 36.0
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shoulder_tip_x: float = -200.0
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shoulder_tip_y: float = 160.0
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shoulder_mid_x: float = -105.0
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@ -160,26 +160,42 @@ class WingProfile(Model):
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)
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return result
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def outer_profile_s0(self) -> Cq.Sketch:
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"""
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The outer boundary of s0, used to produce the curved panel and the
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top/bottom slots
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"""
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tip_x = self.shoulder_tip_x
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tip_y = self.shoulder_tip_y
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return (
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Cq.Sketch()
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.spline([
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(0, 0),
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(-30.0, 80.0),
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(tip_x, tip_y)
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])
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#.segment(
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# (tip_x, tip_y),
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# (tip_x - 10, tip_y),
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#)
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)
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@target(name="profile-s0", kind=TargetKind.DXF)
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def profile_s0(self) -> Cq.Sketch:
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tip_x = self.shoulder_tip_x
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tip_y = self.shoulder_tip_y
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mid_x = self.shoulder_mid_x
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mid_y = self.shoulder_mid_y
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sw = self.shoulder_width
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sketch = (
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Cq.Sketch()
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self.outer_profile_s0()
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.segment((-self.base_width, 0), (0, 0))
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.spline([
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(0, 0),
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(-30.0, 80.0),
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(tip_x, tip_y)
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])
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.segment(
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(tip_x, tip_y),
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(tip_x, tip_y - self.shoulder_width),
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(tip_x, tip_y - sw),
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)
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.segment(
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(tip_x, tip_y - self.shoulder_width),
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(tip_x, tip_y - sw),
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(mid_x, mid_y),
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)
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.segment(
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@ -191,21 +207,12 @@ class WingProfile(Model):
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return sketch
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def outer_shell_s0(self) -> Cq.Workplane:
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tip_x = self.shoulder_tip_x
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tip_y = self.shoulder_tip_y
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t = self.panel_thickness
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edge = Cq.Edge.makeSpline([
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Cq.Vector(x, y, 0)
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for x,y in [
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(0, 0),
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(-30.0, 80.0),
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(tip_x, tip_y)
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]
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])
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profile = Cq.Wire.assembleEdges(self.outer_profile_s0().edges().vals())
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result = (
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Cq.Workplane('XZ')
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.rect(t, self.root_height + t*2, centered=(False, False))
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.sweep(edge)
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.sweep(profile)
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)
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plane = result.copyWorkplane(Cq.Workplane('XZ'))
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plane.moveTo(0, 0).tagPlane("bot")
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@ -219,15 +226,15 @@ class WingProfile(Model):
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"""
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holes = [
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hole
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for i, x in enumerate(self.shoulder_joint.parent_conn_hole_pos)
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for i, (x, y) in enumerate(self.shoulder_joint.parent_conn_hole_pos)
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for hole in [
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Hole(x=x, tag=f"conn_top{i}"),
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Hole(x=-x, tag=f"conn_bot{i}"),
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Hole(x=x, y=y, tag=f"conn_top{i}"),
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Hole(x=-x, y=y, tag=f"conn_bot{i}"),
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]
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]
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return MountingBox(
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length=self.shoulder_joint.height,
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width=self.shoulder_width,
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width=self.shoulder_joint.parent_lip_width,
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thickness=self.spacer_thickness,
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holes=holes,
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hole_diam=self.shoulder_joint.parent_conn_hole_diam,
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@ -263,8 +270,10 @@ class WingProfile(Model):
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def surface_s0(self, top: bool = False) -> Cq.Workplane:
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base_dx = -(self.base_width - self.base_plate_width) / 2
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base_dy = self.base_joint.joint_height
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axle_dist = self.shoulder_joint.parent_lip_ext
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tags = [
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("shoulder", (self.shoulder_tip_x, self.shoulder_tip_y - self.shoulder_width), 0),
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("shoulder", (self.shoulder_tip_x + axle_dist, self.shoulder_tip_y - self.shoulder_width), 0),
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("base", (base_dx, base_dy), 90),
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]
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result = nhf.utils.extrude_with_markers(
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@ -284,9 +293,12 @@ class WingProfile(Model):
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.addS(self.surface_s0(top=True), name="bot",
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material=self.mat_panel, role=self.role_panel)
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.addS(self.surface_s0(top=False), name="top",
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material=self.mat_panel, role=self.role_panel)
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.constrain("bot@faces@>Z", "top@faces@<Z", "Point",
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param=self.shoulder_joint.height)
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material=self.mat_panel, role=self.role_panel,
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loc=Cq.Location((0, 0, self.root_height + self.panel_thickness)))
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.constrain("bot", "Fixed")
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.constrain("top", "Fixed")
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#.constrain("bot@faces@>Z", "top@faces@<Z", "Point",
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# param=self.shoulder_joint.height)
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.addS(self.outer_shell_s0(), name="outer_shell",
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material=self.mat_panel, role=self.role_panel)
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.constrain("bot?corner", "outer_shell?bot", "Plane", param=0)
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@ -647,7 +659,9 @@ class WingProfile(Model):
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(
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result
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.constrain(f"s0/shoulder?conn_top0", f"shoulder/parent_{tag_top}/lip?conn0", "Plane")
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.constrain(f"s0/shoulder?conn_top1", f"shoulder/parent_{tag_top}/lip?conn1", "Plane")
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.constrain(f"s0/shoulder?conn_bot0", f"shoulder/parent_{tag_bot}/lip?conn0", "Plane")
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.constrain(f"s0/shoulder?conn_bot1", f"shoulder/parent_{tag_bot}/lip?conn1", "Plane")
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)
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if "s1" in parts:
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result.add(self.assembly_s1(), name="s1")
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