201 lines
5.2 KiB
Python
201 lines
5.2 KiB
Python
import cadquery2 as cq
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from cadquery2 import exporters
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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 = 98
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kbd_width = 286
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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 = 164 # Max bed size
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thickness = 20 + shell_t # 20 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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# mounting holes
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kbd_pillars = (
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cq.Sketch()
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.push(
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[
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(19, -16.5),
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(133, -16.5),
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(247.5, -16.5),
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(24, -86),
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(142.5, -91),
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(261.5, -86),
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]
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)
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.circle(6, mode="a")
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# Holes for M3 threaded inserts
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.circle(ti_radius, 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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(width - 6, -6),
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(width - 6, -40),
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(120, -6),
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(170, -6),
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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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battery_holder = (
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cq.Sketch()
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.polygon(
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[(-67, 5), (0, 5), (0, -12), (-67, -12), (-67, 5)],
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mode="a",
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)
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.trapezoid(83, 83, 90, mode="a")
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.trapezoid(80, 80, 90, mode="s")
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.polygon(
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[(-67, 3), (0, 3), (0, -10), (-67, -10), (-67, 3)],
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mode="s",
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)
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# Cutout for the
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.polygon(
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[(-67, 30), (0, 30), (0, 12), (-67, 12), (-67, 30)],
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mode="s",
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)
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)
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power_in = cq.Sketch().circle(5, mode="a")
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usb_in = cq.Sketch().trapezoid(13, 5.5, 90, mode="a")
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switch_in = cq.Sketch().trapezoid(13.5, 8, 90, mode="a")
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# Motherboard mount
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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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# Battery holder
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.workplaneFromTagged("mid_height")
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.center(-width / 2 + shell_t + 65, height / 2 - shell_t - 45)
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.placeSketch(battery_holder)
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.extrude(-height / 2)
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# Power cable inlet
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.faces("<X")
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.workplane(centerOption="CenterOfBoundBox")
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.center(-height / 2 + shell_t + 48.5, -3)
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.placeSketch(power_in)
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.cutBlind(-shell_t)
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# USB inlet
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.faces(">X")
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.workplane(centerOption="CenterOfBoundBox")
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.center(-height / 2 + shell_t + 50, -5)
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.placeSketch(usb_in)
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.cutBlind(-shell_t)
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# Hole for power switch
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.faces(">Y")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, 0)
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.placeSketch(switch_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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.tag("sloped")
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.placeSketch(kbd_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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)
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if __name__ == "__main__":
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left_cutout = cq.Sketch().polygon(
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[(0, 0), (160, 0), (160, -100), (135, -100), (135, -200), (0, -200), (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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(160, 0),
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(width, 0),
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(width, -height),
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(135, -height),
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(135, -100),
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(160, -100),
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(160, 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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