cosplay: Touhou/Houjuu Nue #4
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@ -58,6 +58,8 @@ class MountingBox(Model):
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# Generate tags on the opposite side
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generate_reverse_tags: bool = False
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centre_bot_top_tags: bool = False
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# Determines the position of side tags
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flip_y: bool = False
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@ -105,6 +107,10 @@ class MountingBox(Model):
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result.faces(">Y").workplane(origin=result.vertices("<X and >Y and >Z").val().Center()).tagPlane("right")
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c_y = ">Y" if self.flip_y else "<Y"
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if self.centre_bot_top_tags:
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result.faces("<X").workplane(origin=result.edges(f"<X and >Z").val().Center()).tagPlane("bot")
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result.faces(">X").workplane(origin=result.edges(f">X and >Z").val().Center()).tagPlane("top")
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else:
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result.faces("<X").workplane(origin=result.vertices(f"<X and {c_y} and >Z").val().Center()).tagPlane("bot")
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result.faces(">X").workplane(origin=result.vertices(f">X and {c_y} and >Z").val().Center()).tagPlane("top")
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result.faces(">Z").tag("dir")
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@ -41,6 +41,7 @@ import nhf.touhou.houjuu_nue.harness as MH
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from nhf.parts.item import Item
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import nhf.utils
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WING_DEFLECT = 10.0
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@dataclass
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class Parameters(Model):
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"""
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@ -51,7 +52,7 @@ class Parameters(Model):
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wing_r1: MW.WingR = field(default_factory=lambda: MW.WingR(
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name="r1",
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shoulder_angle_bias = 15.0,
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shoulder_angle_bias = WING_DEFLECT,
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s0_top_hole=False,
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s0_bot_hole=True,
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))
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@ -62,7 +63,7 @@ class Parameters(Model):
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))
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wing_r3: MW.WingR = field(default_factory=lambda: MW.WingR(
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name="r3",
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shoulder_angle_bias = 15.0,
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shoulder_angle_bias = WING_DEFLECT,
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s0_top_hole=True,
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s0_bot_hole=False,
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))
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@ -75,7 +76,7 @@ class Parameters(Model):
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wing_l2: MW.WingL = field(default_factory=lambda: MW.WingL(
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name="l2",
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wrist_angle=-30.0,
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shoulder_angle_bias = 15.0,
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shoulder_angle_bias = WING_DEFLECT,
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s0_top_hole=True,
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s0_bot_hole=True,
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))
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@ -261,18 +261,23 @@ class ShoulderJoint(Model):
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# On the parent side, drill vertical holes
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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_diam: float = 4.0
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# Position of the holes relative centre line
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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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(20, 8),
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(20, -8),
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])
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# Distance from centre of lips to the axis
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parent_lip_ext: float = 40.0
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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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# The parent side has arms which connect to the lips
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parent_arm_width: float = 25.0
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parent_arm_height: float = 12.0
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# Generates a child guard which covers up the internals. The lip length is
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# relative to the +X surface of the guard.
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@ -281,19 +286,19 @@ class ShoulderJoint(Model):
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# guard length measured from axle
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child_lip_length: float = 40.0
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child_lip_width: float = 20.0
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child_conn_hole_diam: float = 6.0
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child_conn_hole_diam: float = 4.0
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# Measured from centre of axle
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child_conn_hole_pos: list[float] = field(default_factory=lambda: [15, 25])
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child_conn_hole_pos: list[float] = field(default_factory=lambda: [8, 19, 30])
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child_core_thickness: float = 3.0
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# Rotates the torsion joint to avoid collisions or for some other purpose
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axis_rotate_bot: float = 225.0
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axis_rotate_top: float = -225.0
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axis_rotate_bot: float = 90
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axis_rotate_top: float = 0
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directrix_id: int = 0
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angle_neutral: float = 10.0
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angle_max_deflection: float = 80.0
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angle_neutral: float = -15.0
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angle_max_deflection: float = 90.0
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def __post_init__(self):
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assert self.parent_lip_length * 2 < self.height
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@ -302,51 +307,105 @@ class ShoulderJoint(Model):
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def radius(self):
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return self.torsion_joint.radius
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def parent_arm_loc(self) -> Cq.Location:
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def parent_lip_loc(self, left: bool=True) -> Cq.Location:
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"""
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2d location of the arm surface on the parent side, relative to axle
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"""
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return Cq.Location.rot2d(self.angle_neutral) * Cq.Location.from2d(self.parent_lip_ext, 0, 0)
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dy = self.parent_arm_width / 2
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sign = 1 if left else -1
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loc_dir = Cq.Location((0,sign * dy,0), (0, 0, 1), sign * 90)
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return Cq.Location.from2d(self.parent_lip_ext, 0, 0) * loc_dir
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@property
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def _max_contraction_angle(self) -> float:
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return self.angle_max_deflection + self.angle_neutral
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def _contraction_cut_geometry(self, parent: bool = False, mirror: bool=False) -> Cq.Solid:
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"""
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Generates a cylindrical sector which cuts away overlapping regions of the child and parent
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"""
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aspect = self.child_guard_width / self.parent_arm_width
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theta = math.radians(self._max_contraction_angle)
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theta_p = math.atan(math.sin(theta) / (math.cos(theta) + aspect))
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angle = math.degrees(theta_p)
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assert 0 <= angle <= 90
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# outer radius of the cut, overestimated
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cut_radius = math.sqrt(self.child_guard_width ** 2 + self.parent_arm_width ** 2)
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span = 180
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result = (
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Cq.Solid.makeCylinder(
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height=self.height,
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radius=cut_radius,
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angleDegrees=span,
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).cut(Cq.Solid.makeCylinder(
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height=self.height,
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radius=self.torsion_joint.radius,
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))
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)
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if parent:
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angle = - span - angle
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else:
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angle = self._max_contraction_angle - angle
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result = result.located(Cq.Location((0,0,-self.height/2), (0,0,1), angle))
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if mirror:
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result = result.mirror('XZ')
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return result
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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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assert self.parent_lip_width <= joint.radius_track * 2
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assert self.parent_arm_width <= joint.radius_track * 2
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assert self.parent_lip_ext > joint.radius_track
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lip_guard = (
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arm = (
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Cq.Solid.makeBox(
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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 , 0)))
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.cut(Cq.Solid.makeCylinder(joint.radius_track, self.parent_lip_guard_height))
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self.parent_lip_ext + self.parent_lip_width / 2,
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self.parent_arm_width,
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self.parent_arm_height)
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.located(Cq.Location((0, -self.parent_arm_width/2 , 0)))
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.cut(Cq.Solid.makeCylinder(joint.radius_track, self.parent_arm_height))
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.cut(self._contraction_cut_geometry(parent=True, mirror=top))
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)
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lip = MountingBox(
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lip_args = dict(
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length=self.parent_lip_length,
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width=self.parent_lip_width,
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thickness=self.parent_lip_thickness,
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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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lip1 = MountingBox(
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**lip_args,
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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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)
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lip2 = MountingBox(
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**lip_args,
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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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lip_dy = self.parent_arm_width / 2 - self.parent_lip_thickness
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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, 0))
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loc_dir1 = Cq.Location((0,lip_dy,0), (0, 0, 1), -90)
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loc_dir2 = Cq.Location((0,-lip_dy,0), (0, 0, 1), 90)
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loc_pos = Cq.Location((self.parent_lip_ext, 0, 0))
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rot = -self.axis_rotate_top if top else self.axis_rotate_bot
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lip_p_tag, lip_n_tag = "lip_right", "lip_left"
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if not top:
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lip_p_tag, lip_n_tag = lip_n_tag, lip_p_tag
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result = (
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Cq.Assembly()
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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.generate(), name="lip", loc=loc_pos * loc_dir * loc_axis)
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.add(arm, name="arm")
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.add(lip1.generate(), name=lip_p_tag, loc=loc_pos * loc_dir1 * loc_axis)
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.add(lip2.generate(), name=lip_n_tag, loc=loc_pos * loc_dir2 * loc_axis)
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)
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return result
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@ -421,6 +480,7 @@ class ShoulderJoint(Model):
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combine='cut',
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centered=(False, True, True),
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)
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.cut(self._contraction_cut_geometry(parent=False))
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)
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core = (
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Cq.Workplane('XY')
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@ -462,7 +522,11 @@ class ShoulderJoint(Model):
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return result
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@assembly()
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def assembly(self, fastener_pos: float = 0.0, deflection: float = 0) -> Cq.Assembly:
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def assembly(
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self,
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fastener_pos: float = 0.0,
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deflection: float = 0.0,
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) -> Cq.Assembly:
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assert deflection <= self.angle_max_deflection
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directrix = self.directrix_id
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mat = Material.RESIN_TRANSPERENT
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@ -116,7 +116,7 @@ class WingProfile(Model):
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assert self.wrist_joint.total_thickness < min(self.s2_thickness, self.s3_thickness)
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self.shoulder_joint.angle_neutral = -self.shoulder_angle_neutral - self.shoulder_angle_bias
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self.shoulder_axle_loc = Cq.Location.from2d(self.shoulder_tip_x, self.shoulder_tip_y - self.shoulder_width / 2, self.shoulder_angle_bias)
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self.shoulder_axle_loc = Cq.Location.from2d(self.shoulder_tip_x, self.shoulder_tip_y - self.shoulder_width / 2, 0)
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self.shoulder_joint.child_guard_width = self.s1_thickness + self.panel_thickness * 2
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assert self.spacer_thickness == self.root_joint.child_mount_thickness
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@ -201,7 +201,7 @@ class WingProfile(Model):
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"""
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result = math.degrees(math.atan2(-self.shoulder_tip_bezier_y, self.shoulder_tip_bezier_x))
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assert result >= 0
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return result
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return result / 2
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@target(name="profile-s0", kind=TargetKind.DXF)
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def profile_s0(self, top: bool = True) -> Cq.Sketch:
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@ -266,17 +266,18 @@ class WingProfile(Model):
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return result
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@submodel(name="spacer-s0-shoulder")
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def spacer_s0_shoulder(self) -> MountingBox:
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def spacer_s0_shoulder(self, left: bool=True) -> MountingBox:
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"""
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Shoulder side serves double purpose for mounting shoulder joint and
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structural support
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"""
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sign = 1 if left else -1
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holes = [
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hole
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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, 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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Hole(x=x, y=sign * y, tag=f"conn_top{i}"),
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Hole(x=-x, y=sign * y, tag=f"conn_bot{i}"),
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]
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]
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return MountingBox(
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@ -287,6 +288,7 @@ class WingProfile(Model):
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hole_diam=self.shoulder_joint.parent_conn_hole_diam,
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centred=(True, True),
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flip_y=self.flip,
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centre_bot_top_tags=True,
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)
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@submodel(name="spacer-s0-shoulder")
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def spacer_s0_base(self) -> MountingBox:
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@ -329,19 +331,19 @@ 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.root_joint.child_width) / 2 - 10
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base_dy = self.root_joint.hirth_joint.joint_height
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loc_tip = Cq.Location(0, -self.shoulder_joint.parent_lip_width / 2)
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#mid_spacer_loc = (
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# Cq.Location.from2d(0, -self.shoulder_width/2) *
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# self.shoulder_axle_loc *
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# Cq.Location.rot2d(self.shoulder_joint.angle_neutral)
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#)
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axle_rotate = Cq.Location.rot2d(-self.shoulder_angle_neutral)
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tags = [
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("shoulder",
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self.shoulder_axle_loc *
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self.shoulder_joint.parent_arm_loc() *
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loc_tip),
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("shoulder_left",
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self.shoulder_axle_loc * axle_rotate * self.shoulder_joint.parent_lip_loc(left=True)),
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("shoulder_right",
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self.shoulder_axle_loc * axle_rotate * self.shoulder_joint.parent_lip_loc(left=False)),
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("base", Cq.Location.from2d(base_dx, base_dy, 90)),
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("electronic_mount", Cq.Location.from2d(-55, 75, 64)),
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("electronic_mount", Cq.Location.from2d(-45, 75, 64)),
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]
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result = extrude_with_markers(
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self.profile_s0(top=top),
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@ -377,7 +379,8 @@ class WingProfile(Model):
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#.constrain("top?corner_left", "inner_shell?top", "Point")
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)
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for o, tag in [
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(self.spacer_s0_shoulder().generate(), "shoulder"),
|
||||
(self.spacer_s0_shoulder(left=True).generate(), "shoulder_left"),
|
||||
(self.spacer_s0_shoulder(left=False).generate(), "shoulder_right"),
|
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(self.spacer_s0_base().generate(), "base"),
|
||||
(self.spacer_s0_electronic_mount().generate(), "electronic_mount"),
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]:
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@ -902,12 +905,13 @@ class WingProfile(Model):
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fastener_pos=fastener_pos,
|
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deflection=angle), name="shoulder")
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if "s0" in parts and "shoulder" in parts:
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for i in range(len(self.shoulder_joint.parent_conn_hole_pos)):
|
||||
(
|
||||
result
|
||||
.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")
|
||||
.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")
|
||||
.constrain(f"s0/shoulder_left?conn_top{i}", f"shoulder/parent_{tag_top}/lip_left?conn{i}", "Plane")
|
||||
.constrain(f"s0/shoulder_left?conn_bot{i}", f"shoulder/parent_{tag_bot}/lip_left?conn{i}", "Plane")
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||||
.constrain(f"s0/shoulder_right?conn_top{i}", f"shoulder/parent_{tag_top}/lip_right?conn{i}", "Plane")
|
||||
.constrain(f"s0/shoulder_right?conn_bot{i}", f"shoulder/parent_{tag_bot}/lip_right?conn{i}", "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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