Playing with screen mount parameters, angle to 20 degrees

* Adjusted sizes and other parameters for the new 65% keyboard
* Commented battery holder (waiting on the 18650 charger)

notebook_nueva/modelo.py

@@ -8,8 +8,8 @@ from cadquery2 import exporters
 shell_t = 3
 
 # Size of the kbd board
-kbd_height = 98
+kbd_height = 95.5
-kbd_width = 286
+kbd_width = 305
 kbd_angle = 5
 
 # Size of the whole object
@@ -22,22 +22,32 @@ ti_radius = 2.35
 ti_depth = 6.25
 
 # Positions are determined by measuring the keyboard
+
+kbd_pillar_positions = [
+    (18.25, -16),
+    (142.5, -25.5),
+    (kbd_width - 20, -16),
+    (23.5, -79.5),
+    (145.5, -82.5),
+    (kbd_width - 19, -79.5),
+]
+
+
 # mounting holes
 kbd_pillars = (
     cq.Sketch()
-    .push(
+    .push(kbd_pillar_positions)
-        [
+    .circle(2.2, mode="a")
-            (19, -16.5),
+    # Holes for self-tapping screws
-            (133, -16.5),
+    .circle(1.1, mode="s")
-            (247.5, -16.5),
-            (24, -86),
-            (142.5, -91),
-            (261.5, -86),
-        ]
 )
-    .circle(6, mode="a")
+
-    # Holes for M3 threaded inserts
+kbd_lower_pillars = (
-    .circle(ti_radius, mode="s")
+    cq.Sketch()
+    .push(kbd_pillar_positions)
+    .circle(4, mode="a")
+    # Holes for self-tapping screws
+    .circle(1.1, mode="s")
 )
 
 # These are placed where convenient, and are used to join the top and bottom
@@ -45,10 +55,10 @@ kbd_pillars = (
 # Measured from top-left corner OUTSIDE
 mounting_pillar_positions = [
     (6, -6),
-    (width - 6, -6),
-    (width - 6, -40),
     (120, -6),
     (170, -6),
+    (width - 6, -6),
+    (width - 6, -40),
 ]
 
 mounting_pillars = (
@@ -60,29 +70,29 @@ mounting_pillars = (
 
 screw_holes = cq.Sketch().push(mounting_pillar_positions).circle(3, mode="a")
 
-battery_holder = (
+# battery_holder = (
-    cq.Sketch()
+#     cq.Sketch()
-    .polygon(
+#     .polygon(
-        [(-67, 5), (0, 5), (0, -12), (-67, -12), (-67, 5)],
+#         [(-67, 5), (0, 5), (0, -12), (-67, -12), (-67, 5)],
-        mode="a",
+#         mode="a",
-    )
+#     )
-    .trapezoid(83, 83, 90, mode="a")
+#     .trapezoid(83, 83, 90, mode="a")
-    .trapezoid(80, 80, 90, mode="s")
+#     .trapezoid(80, 80, 90, mode="s")
-    .polygon(
+#     .polygon(
-        [(-67, 3), (0, 3), (0, -10), (-67, -10), (-67, 3)],
+#         [(-67, 3), (0, 3), (0, -10), (-67, -10), (-67, 3)],
-        mode="s",
+#         mode="s",
-    )
+#     )
-    # Cutout for the
+#     # Cutout for the
-    .polygon(
+#     .polygon(
-        [(-67, 30), (0, 30), (0, 12), (-67, 12), (-67, 30)],
+#         [(-67, 30), (0, 30), (0, 12), (-67, 12), (-67, 30)],
-        mode="s",
+#         mode="s",
-    )
+#     )
-)
+# )
 
 
 power_in = cq.Sketch().circle(5, mode="a")
 usb_in = cq.Sketch().trapezoid(13, 5.5, 90, mode="a")
-switch_in = cq.Sketch().trapezoid(13.5, 8, 90, mode="a")
+switch_in = cq.Sketch().trapezoid(13.5, 8.5, 90, mode="a")
 
 
 # Motherboard mount
@@ -100,10 +110,10 @@ def model():
         .faces(">Z")
         .shell(-shell_t)
         # Battery holder
-        .workplaneFromTagged("mid_height")
+        # .workplaneFromTagged("mid_height")
-        .center(-width / 2 + shell_t + 65, height / 2 - shell_t - 45)
+        # .center(-width / 2 + shell_t + 65, height / 2 - shell_t - 45)
-        .placeSketch(battery_holder)
+        # .placeSketch(battery_holder)
-        .extrude(-height / 2)
+        # .extrude(-height / 2)
         # Power cable inlet
         .faces("<X")
         .workplane(centerOption="CenterOfBoundBox")
@@ -129,8 +139,13 @@ def model():
         .center(-width / 2 + shell_t, kbd_height - height / 2 + shell_t)
         .transformed(rotate=cq.Vector(kbd_angle, 0, 0))
         .tag("sloped")
+        .workplane(offset=-1.5)
         .placeSketch(kbd_pillars)
         .extrude(-1000)
+        .workplaneFromTagged("sloped")
+        .workplane(offset=-4.5)
+        .placeSketch(kbd_lower_pillars)
+        .extrude(-1000)
         # Remove the excess extrusion
         .workplaneFromTagged("mid_height")
         .transformed(offset=cq.Vector(0, 0, -thickness / 2))
@@ -157,7 +172,7 @@ def model():
 if __name__ == "__main__":
 
     left_cutout = cq.Sketch().polygon(
-        [(0, 0), (160, 0), (160, -100), (135, -100), (135, -200), (0, -200), (0, 0)],
+        [(0, 0), (width / 2, 0), (width / 2, -height), (0, -height), (0, 0)],
         mode="a",
     )
 
@@ -175,13 +190,11 @@ if __name__ == "__main__":
 
     right_cutout = cq.Sketch().polygon(
         [
-            (160, 0),
+            (width / 2, 0),
             (width, 0),
             (width, -height),
-            (135, -height),
+            (width / 2, -height),
-            (135, -100),
+            (width / 2, 0),
-            (160, -100),
-            (160, 0),
         ],
         mode="a",
     )

notebook_nueva/screen_mount.py

@@ -10,12 +10,11 @@ from modelo import (
     ti_radius,
 )
 
-ti_radius = 2.5
-
 # Size of the whole object
 width = kbd_width + 2 * shell_t
-height = 59
+height = 66
-thickness = 62  # Will be shorter after construction
+height_bottom = 59
+thickness = 48  # Will be shorter after construction
 
 # Visible screen size
 vis_w = 220
@@ -28,6 +27,9 @@ scr_h = 65
 scr_thickness = 5.5
 screen_cutout = cq.Sketch().trapezoid(scr_w, scr_h, 90, mode="a")
 
+# Screen angle
+scr_angle = 20
+
 # Circuit board and cable hole.
 # This is in the back of the screen, and is a bit shorter in height than the
 # screen. It's wider so it removes enough material to make the shape simpler.
@@ -38,11 +40,16 @@ board_cutout = cq.Sketch().trapezoid(
     mode="a",
 )
 
-kbd_cable_hole = cq.Sketch().trapezoid(15, 5, 90, mode="a").vertices().fillet(1)
+kbd_cable_hole = cq.Sketch().trapezoid(20, 9, 90, mode="a").vertices().fillet(1)
 
+# The last mounting pillar is handled specially
+x, y = mounting_pillar_positions[-1]
 mounting_pillars = (
     cq.Sketch()
     .polygon([(0, 0), (width, 0), (width, -12), (0, -12), (0, 0)], mode="a")
+    .polygon(
+        [(x - 6, y - 6), (x - 6, y + 6), (x + 6, y + 6), (x + 6, y - 6), (x - 6, y - 6)]
+    )
     .push(mounting_pillar_positions)
     .circle(ti_radius, mode="s")
 )
@@ -54,9 +61,9 @@ def model():
         .workplane()
         .tag("mid_height")
         .box(width, height, thickness)
-        # The screen goes at a 45 degree angle
+        # The screen goes rotated
         .faces(">Z")
-        .transformed(rotate=(45, 0, 0))
+        .transformed(rotate=(scr_angle, 0, 0))
         # Move the screen "lower" so it doesn't interfere
         # so much with the back
         .center(0, -2)
@@ -81,6 +88,30 @@ def model():
         .workplane(offset=21)
         .placeSketch(cq.Sketch().trapezoid(1000, 1000, 90, mode="a"))
         .cutBlind(100)
+        # Fillet top of the object
+        .edges(">Z and |X")
+        .fillet(2.5)
+        # Make bottom smaller to fit with base
+        .faces(">X")
+        .workplane(centerOption="CenterOfBoundBox")
+        .center(-height / 2, -thickness / 2)
+        .placeSketch(
+            cq.Sketch()
+            .polygon(
+                [
+                    (height_bottom, 0),
+                    (height_bottom, thickness / 3),
+                    (height, thickness - 21),
+                    (height, thickness),
+                    (height + 5, thickness + 5),
+                    (height + 5, 0),
+                    (height_bottom, 0),
+                ]
+            )
+            .vertices()
+            .fillet(3)
+        )
+        .cutBlind(-1000)
         # Make it hollow
         .faces("<Z")
         # Can't be exactly shell_t because cq fails
@@ -90,33 +121,32 @@ def model():
         .workplane(offset=-scr_thickness, centerOption="CenterOfBoundBox")
         .placeSketch(board_cutout)
         .cutBlind(-6)
-        # 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 + 134, -44)
         .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)
+        .center(-width / 2, height_bottom - height / 2)
         .placeSketch(mounting_pillars)
         .extrude(10)
     )
 
 
+if __name__ == "__main__":
+
+    print("Exporting")
     exporters.export(model(), "screen_mount.stl")
 
-split_offset = -133
+    offset_width = -width / 2
 
     right_side = (
         model()
         .faces(">X")
-    .workplane(centerOption="CenterOfBoundBox", offset=split_offset)
+        .workplane(centerOption="CenterOfBoundBox", offset=offset_width)
-    .center(0, height / 2)
         .split(keepTop=True)
     )
 
@@ -125,8 +155,7 @@ exporters.export(right_side, "right_screen_mount.stl")
     left_side = (
         model()
         .faces(">X")
-    .workplane(centerOption="CenterOfBoundBox", offset=split_offset)
+        .workplane(centerOption="CenterOfBoundBox", offset=offset_width)
-    .center(0, height / 2)
         .split(keepBottom=True)
     )