notebook_nueva/modelo.py

@@ -21,9 +21,7 @@ thickness = 20 + shell_t  # 20 inside
 ti_radius = 2.35
 ti_depth = 6.25
 
-# Positions are determined by measuring the keyboard
-# mounting holes
-kbd_pillars = (
+pillars = (
     cq.Sketch()
     .push(
         [
@@ -36,30 +34,9 @@ kbd_pillars = (
         ]
     )
     .circle(6, mode="a")
-    # Holes for M3 threaded inserts
     .circle(ti_radius, mode="s")
 )
 
-# These are placed where convenient, and are used to join the top and bottom
-# parts of the case.
-# Measured from top-left corner OUTSIDE
-mounting_pillar_positions = [
-    (6, -6),
-    (width - 6, -6),
-    (width - 6, -40),
-    (120, -6),
-    (170, -6),
-]
-
-mounting_pillars = (
-    cq.Sketch()
-    .push(mounting_pillar_positions)
-    .trapezoid(12, 12, 90, mode="a")
-    .circle(1.5, mode="s")
-)
-
-screw_holes = cq.Sketch().push(mounting_pillar_positions).circle(3, mode="a")
-
 battery_holder = (
     cq.Sketch()
     .polygon(
@@ -72,11 +49,6 @@ battery_holder = (
         [(-67, 3), (0, 3), (0, -10), (-67, -10), (-67, 3)],
         mode="s",
     )
-    # Cutout for the
-    .polygon(
-        [(-67, 30), (0, 30), (0, 12), (-67, 12), (-67, 30)],
-        mode="s",
-    )
 )
 
 
@@ -85,9 +57,6 @@ usb_in = cq.Sketch().trapezoid(13, 5.5, 90, mode="a")
 switch_in = cq.Sketch().trapezoid(13.5, 8, 90, mode="a")
 
 
-# Motherboard mount
-
-
 def model():
     return (
         cq.Workplane("XY")
@@ -119,7 +88,7 @@ def model():
         # Hole for power switch
         .faces(">Y")
         .workplane(centerOption="CenterOfBoundBox")
-        .center(0, 0)
+        .center(-height / 2 + shell_t + 50, 0)
         .placeSketch(switch_in)
         .cutBlind(-shell_t)
         # Slanted mounting pillars on the kbd top
@@ -129,7 +98,7 @@ def model():
         .center(-width / 2 + shell_t, kbd_height - height / 2 + shell_t)
         .transformed(rotate=cq.Vector(kbd_angle, 0, 0))
         .tag("sloped")
-        .placeSketch(kbd_pillars)
+        .placeSketch(pillars)
         .extrude(-1000)
         # Remove the excess extrusion
         .workplaneFromTagged("mid_height")
@@ -138,63 +107,48 @@ def model():
         # Slope for the beyboard
         .workplaneFromTagged("sloped")
         .split(keepBottom=True)
-        # Pillars to join with top half
-        .workplaneFromTagged("mid_height")
-        .workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
-        .center(-width / 2, height / 2)
-        .placeSketch(mounting_pillars)
-        .extrude(thickness)
-        # Holes to insert screws from the bottom
-        .workplaneFromTagged("mid_height")
-        .workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
-        .center(-width / 2, height / 2)
-        .placeSketch(screw_holes)
-        # 13 is 20-7 (screw thread length - threaded insert depth)
-        .cutBlind(thickness - 13)
     )
 
 
-if __name__ == "__main__":
+left_cutout = cq.Sketch().polygon(
+    [(0, 0), (160, 0), (160, -100), (135, -100), (135, -200), (0, -200), (0, 0)],
+    mode="a",
+)
 
-    left_cutout = cq.Sketch().polygon(
-        [(0, 0), (160, 0), (160, -100), (135, -100), (135, -200), (0, -200), (0, 0)],
-        mode="a",
-    )
+right_side = (
+    model()
+    .faces("<Z")
+    .workplaneFromTagged("mid_height")
+    .transformed(offset=cq.Vector(0, 0, -thickness / 2))
+    .center(-width / 2, height / 2)
+    .placeSketch(left_cutout)
+    .cutBlind(100)
+)
 
-    right_side = (
-        model()
-        .faces("<Z")
-        .workplaneFromTagged("mid_height")
-        .transformed(offset=cq.Vector(0, 0, -thickness / 2))
-        .center(-width / 2, height / 2)
-        .placeSketch(left_cutout)
-        .cutBlind(100)
-    )
+exporters.export(right_side, "right_side.stl")
 
-    exporters.export(right_side, "right_side.stl")
+right_cutout = cq.Sketch().polygon(
+    [
+        (160, 0),
+        (width, 0),
+        (width, -height),
+        (135, -height),
+        (135, -100),
+        (160, -100),
+        (160, 0),
+    ],
+    mode="a",
+)
 
-    right_cutout = cq.Sketch().polygon(
-        [
-            (160, 0),
-            (width, 0),
-            (width, -height),
-            (135, -height),
-            (135, -100),
-            (160, -100),
-            (160, 0),
-        ],
-        mode="a",
-    )
+left_side = (
+    model()
+    .faces("<Z")
+    .workplaneFromTagged("mid_height")
+    .transformed(offset=cq.Vector(0, 0, -thickness / 2))
+    .center(-width / 2, height / 2)
+    .placeSketch(right_cutout)
+    .cutBlind(100)
+)
+exporters.export(left_side, "left_side.stl")
 
-    left_side = (
-        model()
-        .faces("<Z")
-        .workplaneFromTagged("mid_height")
-        .transformed(offset=cq.Vector(0, 0, -thickness / 2))
-        .center(-width / 2, height / 2)
-        .placeSketch(right_cutout)
-        .cutBlind(100)
-    )
-    exporters.export(left_side, "left_side.stl")
-
-    exporters.export(model(), "model.stl")
+exporters.export(model(), "model.stl")

notebook_nueva/screen_mount.py

@@ -1,19 +1,21 @@
 import cadquery2 as cq
 from cadquery2 import exporters
 
-from modelo import (
-    kbd_height,
-    kbd_width,
-    mounting_pillar_positions,
-    shell_t,
-    ti_depth,
-    ti_radius,
-)
+# Some dimensions copied from modelo.py,
+# TODO refactor into a separate file
+
+# Thickness of the outer material
+shell_t = 3
+
+# Size of the kbd board
+kbd_height = 98
+kbd_width = 286
+kbd_angle = 5
 
 # Size of the whole object
 width = kbd_width + 2 * shell_t
-height = 59
-thickness = 62  # Will be shorter after construction
+height = 69
+thickness = 10
 
 # Visible screen size
 vis_w = 220
@@ -38,21 +40,13 @@ board_cutout = cq.Sketch().trapezoid(
 
 kbd_cable_hole = cq.Sketch().trapezoid(15, 5, 90, mode="a").vertices().fillet(1)
 
-mounting_pillars = (
-    cq.Sketch()
-    .push(mounting_pillar_positions)
-    .trapezoid(12, 12, 90, mode="a")
-    .circle(ti_radius, mode="s")
-)
-
 
 def model():
     return (
         cq.Workplane("XY")
         .workplane()
         .tag("mid_height")
-        .box(width, height, thickness)
-        # The screen goes at a 45 degree angle
+        .box(width, 59, 62)
         .faces(">Z")
         .transformed(rotate=(45, 0, 0))
         # Move the screen "lower" so it doesn't interfere
@@ -81,28 +75,21 @@ def model():
         .cutBlind(100)
         # Make it hollow
         .faces("<Z")
-        # Can't be exactly shell_t because cq fails
-        .shell(-shell_t + 0.01)
+        .shell(-2)
         # Cut hole for the screen board and cables
         .workplaneFromTagged("slanted")
         .workplane(offset=-scr_thickness, centerOption="CenterOfBoundBox")
         .placeSketch(board_cutout)
-        .cutBlind(-6)
+        .cutBlind(-5)
         # Fillet top of the object
         .edges(">Z and |X")
         .fillet(5)
         # Make small hole for the keyboard cable
         .faces(">Y")
         .workplane(offset=-5, centerOption="CenterOfBoundBox")
-        .center(-width / 2 + 128, -23)
+        .center(width / 2 - 128, -23)
         .placeSketch(kbd_cable_hole)
         .cutBlind(-1000)
-        # Pillars to join with bottom half
-        .workplaneFromTagged("mid_height")
-        .workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
-        .center(-width / 2, height / 2)
-        .placeSketch(mounting_pillars)
-        .extrude(10)
     )
 
 
@@ -111,7 +98,7 @@ exporters.export(model(), "screen_mount.stl")
 right_side = (
     model()
     .faces(">X")
-    .workplane(centerOption="CenterOfBoundBox", offset=-width / 2)
+    .workplane(centerOption="CenterOfBoundBox", offset=-140)
     .center(0, height / 2)
     .split(keepTop=True)
 )
@@ -121,7 +108,7 @@ exporters.export(right_side, "right_screen_mount.stl")
 left_side = (
     model()
     .faces(">X")
-    .workplane(centerOption="CenterOfBoundBox", offset=-width / 2)
+    .workplane(centerOption="CenterOfBoundBox", offset=-140)
     .center(0, height / 2)
     .split(keepBottom=True)
 )