Magnet holder

nhf/touhou/yasaka_kanako/onbashira.py

@@ -82,7 +82,7 @@ class FlangeCoupler(Model):
 
     diam_thread_flange: float = 4.0
     n_hole_flange: int = 4
-    r_hole_flange: float = 8.0 # FIXME: Measure!
+    r_hole_flange: float = 12.0 # FIXME: Measure!
 
     def generate(self) -> Cq.Workplane:
         result = (
@@ -237,6 +237,8 @@ class Onbashira(Model):
     section1_gohei_loc: float = 30.0
     gohei_bolt_diam: float = 6.0
 
+    magnet_size: float = 6.0
+
     # The angle joint bridges between two sets of side panels.
 
     # Extra thickness beyond the onbashira's body
@@ -434,6 +436,41 @@ class Onbashira(Model):
             .extrude(self.side_width * 1.5)
         )
 
+    @target(name="magnet-holder")
+    def magnet_holder(self) -> Cq.Workplane:
+        magnet_size = self.magnet_size
+        gap = 1.0
+        length1 = 10.0
+        width = magnet_size * 3
+        height = gap + magnet_size + 1
+        result = (
+            Cq.Workplane()
+            .box(
+                length=length1 + magnet_size,
+                width=width,
+                height=height,
+                centered=(False, True, False)
+            )
+        )
+        corner_cut = Cq.Solid.makeBox(
+            length=height,
+            width=width,
+            height=height,
+        ).moved(0, -width/2, 0) - Cq.Solid.makeCylinder(
+            radius=height,
+            height=width,
+            pnt=(height, -width/2, 0),
+            dir=(0, 1, 0)
+        )
+        box_cut = Cq.Solid.makeBox(
+            length=magnet_size,
+            width=magnet_size,
+            height=magnet_size + gap,
+        ).moved(length1, -magnet_size/2, 0)
+        return result - box_cut - corner_cut
+
+    ### Motor ###
+
     @target(name="motor-coupler")
     def motor_coupler(self) -> Cq.Workplane:
         """
@@ -777,8 +814,8 @@ class Onbashira(Model):
         )
         hole = Cq.Solid.makeCylinder(
             radius=(BOLT_BEARING.diam_thread + self.bearing_spindle_gap)/2,
-            height=h*2
-        ).moved(0, 0, -h)
+            height=h*4
+        ).moved(0, 0, -h*2)
         top = cone + cyl - hole
         return top + top.mirror("XY")