276 lines
8.7 KiB
Python
276 lines
8.7 KiB
Python
import cadquery as cq
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from cadquery import exporters
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import battery_holder
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import cpu_holder
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# Base for the notebook. Basically a kbd base that extends back
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# as much as possible
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# Thickness of the outer material
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shell_t = 3
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# Size of the kbd board
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kbd_height = 95.5
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kbd_width = 305
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kbd_angle = 5
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# Size of the whole object
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width = kbd_width + 2 * shell_t
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height = 159
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thickness = 27 + shell_t # 27 inside
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# Insert Positions
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ti_radius = 2.35
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ti_depth = 6.25
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# Positions are determined by measuring the keyboard
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kbd_pillar_positions = [
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(18.25, -16),
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(142.5, -25.5),
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(kbd_width - 20, -16),
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(23.5, -79.5),
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(145.5, -82.5),
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(kbd_width - 19, -79.5),
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]
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# 2-level mounting pillars for the kbd
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# Width of these need to be tweaked for
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# each specific keyboard
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kbd_pillars = (
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cq.Sketch()
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.push(kbd_pillar_positions)
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.circle(2.2, mode="a")
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# Holes for self-tapping screws
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.circle(1.1, mode="s")
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)
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kbd_lower_pillars = (
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cq.Sketch()
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.push(kbd_pillar_positions)
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.circle(4, mode="a")
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# Holes for self-tapping screws
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.circle(1.1, mode="s")
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)
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# These are placed where convenient, and are used to join the top and bottom
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# parts of the case.
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# Measured from top-left corner OUTSIDE
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mounting_pillar_positions = [
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(6, -6),
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(6, -40),
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(120, -6),
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(170, -6),
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(width - 6, -6),
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(width - 6, -40),
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]
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mounting_pillars = (
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cq.Sketch()
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.push(mounting_pillar_positions)
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.trapezoid(12, 12, 90, mode="a")
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.circle(1.8, mode="s")
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)
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screw_holes = cq.Sketch().push(mounting_pillar_positions).circle(3, mode="a")
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# Hole for the USB hub's exposed port
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usb_in = cq.Sketch().trapezoid(13, 5.5, 90, mode="a")
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# Thing to "grab" the hub so it stays in place
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usb_holder = (
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cq.Sketch().trapezoid(10, 22, 90, mode="a").trapezoid(10, 17, 90, mode="s").clean()
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)
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# Hole for the USB hub's exposed port
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audio_in = cq.Sketch().trapezoid(17, 6, 90, mode="a")
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# CPU holder position from back-right corner of the case
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cpu_offset_x = 40
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cpu_offset_y = 65
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# Battery holder position from front-left corner of the case
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battery_offset_x = 21
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battery_offset_y = 56
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def model():
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return (
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cq.Workplane("XY")
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.workplane(offset=thickness / 2)
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.tag("mid_height")
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# Hollow box
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.box(width, height, thickness)
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.edges("|Z")
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.fillet(2)
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.faces(">Z")
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.shell(-shell_t)
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# Power inlet
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# The position is arbitrary, based on the components available
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.faces(">Y")
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.workplane(centerOption="CenterOfBoundBox")
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# The 15 is distance from stand hole center to center of USB plug
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# The -1 is distance from top of the pillar to center of USB plug
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.center(
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width / 2 - battery_offset_x - battery_holder.power_in_offset_x,
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-thickness / 2
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+ battery_holder.pillar_height
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+ shell_t
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+ battery_holder.power_in_offset_y,
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)
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.placeSketch(battery_holder.power_in)
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.cutBlind(-shell_t)
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# Power button
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# The position is arbitrary, based on the components available,
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.faces(">Y")
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.workplane(centerOption="CenterOfBoundBox")
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# The 67 is distance from stand hole center to center of power button
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# The 5 is distance from top of the pillar to center of power button
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.center(
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width / 2 - battery_offset_x - battery_holder.button_offset_x,
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-thickness / 2
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+ battery_holder.pillar_height
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+ shell_t
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+ battery_holder.button_offset_y,
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)
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.placeSketch(battery_holder.power_button_cut)
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.cutBlind(-shell_t)
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# USB inlet
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# The position is arbitrary, based on the components
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# available, keyboard height, cable length, etc.
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.faces(">X")
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.workplane(centerOption="CenterOfBoundBox")
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.center(-height / 2 + shell_t + 45 + 13 / 2, -8)
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.placeSketch(usb_in)
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.cutBlind(-shell_t)
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# Audio plugs
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# The position is arbitrary, based on the components
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# available, keyboard height, cable length, etc.
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.faces("<Y")
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.workplane(centerOption="CenterOfBoundBox")
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.center(width / 2 - shell_t - 34.5 - 17 / 2, -8)
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.placeSketch(audio_in)
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.cutBlind(-shell_t)
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# Slanted mounting pillars on the kbd top
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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# Top-left kbd corner inside the box
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.center(-width / 2 + shell_t, kbd_height - height / 2 + shell_t)
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.transformed(rotate=cq.Vector(kbd_angle, 0, 0))
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# These two offsets push the keyboard "down" into the case
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# and need to be adjusted per-keyboard
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.tag("sloped")
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.workplane(offset=-2.5)
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.placeSketch(kbd_pillars)
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.extrude(-1000)
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.workplaneFromTagged("sloped")
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.workplane(offset=-5.5)
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.placeSketch(kbd_lower_pillars)
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.extrude(-1000)
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# Remove the excess extrusion
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.workplaneFromTagged("mid_height")
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.transformed(offset=cq.Vector(0, 0, -thickness / 2))
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.split(keepTop=True)
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# Slope for the beyboard
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.workplaneFromTagged("sloped")
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.split(keepBottom=True)
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# Pillars to join with top half
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(-width / 2, height / 2)
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.placeSketch(mounting_pillars)
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.extrude(thickness)
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# Holes to insert screws from the bottom
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(-width / 2, height / 2)
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.placeSketch(screw_holes)
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# 13 is 20-7 (screw thread length - threaded insert depth)
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.cutBlind(thickness - 13)
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# CPU Stands (lower)
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(width / 2 - cpu_offset_x, height / 2 - cpu_offset_y)
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.placeSketch(cpu_holder.lower_stands)
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.extrude(7)
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# CPU Stands (higher)
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(width / 2 - cpu_offset_x, height / 2 - cpu_offset_y)
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.placeSketch(cpu_holder.higher_stands)
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.extrude(10.5)
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# Battery Stands (lower)
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# and should be a parameter (TODO)
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(-width / 2 + battery_offset_x, height / 2 - battery_offset_y)
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.placeSketch(battery_holder.lower_stands)
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.extrude(shell_t + battery_holder.pillar_height)
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# Battery Stands (higher)
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(-width / 2 + battery_offset_x, height / 2 - battery_offset_y)
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.placeSketch(battery_holder.higher_stands)
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.extrude(shell_t + battery_holder.pillar_height + 3.5)
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# Pogo pin connector holders
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(
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-width / 2 + battery_offset_x,
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height / 2 - battery_offset_y - battery_holder.pin_holder_height / 2,
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)
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.placeSketch(battery_holder.pin_holder)
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.extrude(shell_t + 3)
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# Channel for the usb hub
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.workplaneFromTagged("mid_height")
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.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
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.center(width / 2 - 5, -height / 2 + shell_t + 45 + 13 / 2)
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.placeSketch(usb_holder)
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.extrude(shell_t + 8)
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)
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if __name__ == "__main__":
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left_cutout = cq.Sketch().polygon(
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[(0, 0), (width / 2, 0), (width / 2, -height), (0, -height), (0, 0)],
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mode="a",
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)
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right_side = (
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model()
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.faces("<Z")
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.workplaneFromTagged("mid_height")
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.transformed(offset=cq.Vector(0, 0, -thickness / 2))
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.center(-width / 2, height / 2)
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.placeSketch(left_cutout)
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.cutBlind(100)
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)
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exporters.export(right_side, "right_side.stl")
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right_cutout = cq.Sketch().polygon(
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[
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(width / 2, 0),
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(width, 0),
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(width, -height),
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(width / 2, -height),
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(width / 2, 0),
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],
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mode="a",
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)
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left_side = (
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model()
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.faces("<Z")
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.workplaneFromTagged("mid_height")
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.transformed(offset=cq.Vector(0, 0, -thickness / 2))
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.center(-width / 2, height / 2)
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.placeSketch(right_cutout)
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.cutBlind(100)
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)
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exporters.export(left_side, "left_side.stl")
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exporters.export(model(), "model.stl")
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