nhf/touhou/houjuu_nue/__init__.py

@@ -87,6 +87,11 @@ class Parameters(Model):
     hs_joint_axis_cbore_diam: float = 20
     hs_joint_axis_cbore_depth: float = 3
 
+    wing_profile: MW.WingProfile = field(default_factory=lambda: MW.WingProfile(
+        shoulder_height = 100,
+        elbow_height = 120,
+    ))
+
     # Exterior radius of the wing root assembly
     wing_root_radius: float = 40
     wing_root_wall_thickness: float = 8
@@ -347,6 +352,15 @@ class Parameters(Model):
         result.moveTo(0, self.shoulder_attach_dist).tagPlane('conn1')
         return result
 
+    @property
+    def shoulder_joint_child_height(self) -> float:
+        """
+        Calculates the y distance between two joint surfaces on the child side
+        of the shoulder joint.
+        """
+        joint = self.shoulder_torsion_joint
+        return self.wing_s0_height - 2 * joint.total_height + 2 * joint.rider_disk_height
+
     @target(name="shoulder_joint_child")
     def shoulder_joint_child(self) -> Cq.Assembly:
         """
@@ -470,18 +484,18 @@ class Parameters(Model):
             .finalize()
             .extrude(self.wing_s1_spacer_thickness)
         )
-        result.faces("<Z").tag("mate1")
-        result.faces(">Z").tag("mate2")
+        result.faces("<Z").tag("weld1")
+        result.faces(">Z").tag("weld2")
         result.faces(">Y").tag("dir")
         return result
 
     @target(name="wing/s1-shoulder-spacer", kind=TargetKind.DXF)
-    def wing_s1_shoulder_spacer(self, flipped=False) -> Cq.Workplane:
+    def wing_s1_shoulder_spacer(self) -> Cq.Workplane:
         """
-        if `flipped = True`, tag on the bottom face. This does not change the
-        geometry.
+        The mate tags are on the side closer to the holes.
         """
         dx = self.wing_s1_shoulder_spacer_hole_dist
+        h = self.wing_s1_spacer_thickness
         result = (
             Cq.Workplane('XZ')
             .sketch()
@@ -493,33 +507,35 @@ class Parameters(Model):
             ])
             .circle(self.wing_s1_spacer_hole_diam / 2, mode='s')
             .finalize()
-            .extrude(self.wing_s1_spacer_thickness)
+            .extrude(h)
         )
         # Tag the mating surfaces to be glued
-        result.faces("<Z").tag("mate1")
-        result.faces(">Z").tag("mate2")
+        result.faces("<Z").workplane().moveTo(0, h).tagPlane("weld1")
+        result.faces(">Z").workplane().moveTo(0, -h).tagPlane("weld2")
 
         # Tag the directrix
         result.faces("<Y").tag("dir")
 
         # Tag the holes
-        plane = result.faces("<Y" if flipped else ">Y").workplane()
+        plane = result.faces(">Y").workplane()
         # Side closer to the parent is 0
-        plane.moveTo(dx if flipped else -dx, 0).tagPlane("conn0")
+        plane.moveTo(-dx, 0).tagPlane("conn0")
         plane.tagPlane("conn1")
         return result
 
     @target(name="wing/r1s1", kind=TargetKind.DXF)
     def wing_r1s1_profile(self) -> Cq.Sketch:
-        return MW.wing_r1s1_profile()
+        return self.wing_profile.wing_r1s1_profile()
 
     def wing_r1s1_panel(self, front=True) -> Cq.Workplane:
         profile = self.wing_r1s1_profile()
+        w = self.wing_s1_shoulder_spacer_width / 2
+        h = (self.wing_profile.shoulder_height - self.shoulder_joint_child_height) / 2
         anchors = [
-            ("shoulder_top", 10, 55),
-            ("shoulder_bot", 10, 5),
+            ("shoulder_top", w, h + self.shoulder_joint_child_height),
+            ("shoulder_bot", w, h),
             ("middle", 50, -20),
-            ("tip", 390, -150),
+            ("tip", 270, 50),
         ]
         result = (
             Cq.Workplane("XY")
@@ -543,25 +559,30 @@ class Parameters(Model):
                  color=self.material_panel.color)
             .constrain("panel_front@faces@>Z", "panel_back@faces@<Z", "Point",
                        param=self.wing_s1_thickness)
+            .add(self.wing_s1_shoulder_spacer(),
+                 name="shoulder_bot_spacer",
+                 color=self.material_bracket.color)
+            .constrain("panel_front?shoulder_bot", "shoulder_bot_spacer?weld1", "Plane")
+            .constrain("panel_back?shoulder_bot", "shoulder_bot_spacer?weld2", "Plane")
+            .constrain("shoulder_bot_spacer?dir", "FixedAxis", param=(0, 1, 0))
+            .add(self.wing_s1_shoulder_spacer(),
+                 name="shoulder_top_spacer",
+                 color=self.material_bracket.color)
+            .constrain("panel_front?shoulder_top", "shoulder_top_spacer?weld2", "Plane")
+            .constrain("panel_back?shoulder_top", "shoulder_top_spacer?weld1", "Plane")
+            .constrain("shoulder_top_spacer?dir", "FixedAxis", param=(0, -1, 0))
+            # Should be controlled by point value directly
+            #.constrain("shoulder_bot_spacer?dir", "shoulder_top_spacer?dir", "Point",
+            #           self.shoulder_joint_child_height)
         )
-        for tag in ["shoulder_top", "shoulder_bot"]:
-            name = f"{tag}_spacer"
-            flipped = tag.endswith("top")
-            (
-                result
-                .add(self.wing_s1_shoulder_spacer(flipped=flipped), name=name,
-                     color=self.material_bracket.color)
-                .constrain(f"panel_front?{tag}", f"{name}?mate1", "Plane")
-                .constrain(f"panel_back?{tag}", f"{name}?mate2", "Plane")
-                .constrain(f"{name}?dir", "FixedAxis", param=(0, 1, 0))
-            )
         for tag in ["middle", "tip"]:
+            name = f"{tag}_spacer"
             (
                 result
-                .add(self.wing_s1_spacer(), name=f"{tag}_spacer",
+                .add(self.wing_s1_spacer(), name=name,
                      color=self.material_bracket.color)
-                .constrain(f"panel_front?{tag}", f"{tag}_spacer?mate1", "Plane")
-                .constrain(f"panel_back?{tag}", f"{tag}_spacer?mate2", "Plane")
+                .constrain(f"panel_front?{tag}", f"{tag}_spacer?weld1", "Plane")
+                .constrain(f"panel_back?{tag}", f"{tag}_spacer?weld2", "Plane")
                 .constrain(f"{name}?dir", "FixedAxis", param=(0, 1, 0))
             )
         return result.solve()

nhf/touhou/houjuu_nue/wing.py

@@ -3,11 +3,13 @@ This file describes the shapes of the wing shells. The joints are defined in
 `__init__.py`.
 """
 import math
+from dataclasses import dataclass
 import cadquery as Cq
 from nhf import Material, Role
 from nhf.parts.joints import HirthJoint
 import nhf.utils
 
+
 def wing_root_profiles(
         base_sweep=150,
         wall_thickness=8,
@@ -227,33 +229,50 @@ def wing_root(joint: HirthJoint,
     )
     return result
 
-def wing_r1s1_profile() -> Cq.Sketch:
-    """
-       Generates the first wing segment profile, with the wing root pointing in
-       the positive x axis.
-       """
-    # Depression of the wing middle
-    h = 100
-    w = 400
-    bend = 200
-    factor = 0.7
-    result = (
-        Cq.Sketch()
-        .segment((0, 0), (0, h))
-        .spline([
-            (0, h),
-            (0.5 * w, h - factor * bend),
-            (w, h - bend),
-        ])
-        .segment(
-            (w, h - bend),
-            (w, -bend),
+
+@dataclass
+class WingProfile:
+
+    shoulder_height: float = 100
+    elbow_height: float = 120
+
+    def wing_r1s1_profile(self) -> Cq.Sketch:
+        """
+        Generates the first wing segment profile, with the wing root pointing in
+        the positive x axis.
+        """
+
+
+        w = 270
+        # Depression of the wing middle, measured
+        h = 0
+        # spline curve easing extension
+        theta = math.radians(30)
+        c_th, s_th = math.cos(theta), math.sin(theta)
+        bend = 30
+        ext = 40
+        ext_dh = -5
+        assert ext * 2 < w
+
+        factor = 0.7
+
+        result = (
+            Cq.Sketch()
+            .segment((0, 0), (0, self.shoulder_height))
+            .spline([
+                (0, self.shoulder_height),
+                ((w - s_th * self.elbow_height) / 2, self.shoulder_height / 2 + (self.elbow_height * c_th - h) / 2 - bend),
+                (w - s_th * self.elbow_height, self.elbow_height * c_th - h),
+            ])
+            .segment(
+                (w - s_th * self.elbow_height, self.elbow_height * c_th -h),
+                (w, -h),
+            )
+            .spline([
+                (0, 0),
+                (w / 2, -h / 2 - bend),
+                (w, -h),
+            ])
+            .assemble()
         )
-        .spline([
-            (w, - bend),
-            (0.5 * w, - factor * bend),
-            (0, 0),
-        ])
-        .assemble()
-    )
-    return result
+        return result