cadquery/notebook_nueva/screen_mount.py

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import cadquery as cq
from cadquery import exporters
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from modelo import (
kbd_height,
kbd_width,
mounting_pillar_positions,
shell_t,
ti_depth,
ti_radius,
)
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# Size of the whole object
width = kbd_width + 2 * shell_t
height = 66
height_bottom = 59
thickness = 48 # Will be shorter after construction
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# Visible screen size
vis_w = 219
vis_h = 55
viewport_cutout = cq.Sketch().trapezoid(vis_w, vis_h, 90, mode="a").vertices().fillet(2)
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# Whole screen size
scr_w = 231
scr_h = 65
scr_thickness = 5.5
screen_cutout = cq.Sketch().trapezoid(scr_w, scr_h, 90, mode="a")
# Screen angle
scr_angle = 20
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# 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.
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board_cutout = cq.Sketch().trapezoid(
scr_w + 5,
scr_h - 10,
90,
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mode="a",
)
kbd_cable_hole = cq.Sketch().trapezoid(20, 9, 90, mode="a").vertices().fillet(1)
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# y needs to be inverted because this is the top side, adn there's 2 pillars we don't use
mounting_pillar_positions = [(x, -y) for x, y in mounting_pillar_positions[:-2]]
mounting_pillars = (
cq.Sketch()
.push(mounting_pillar_positions)
.trapezoid(-12, 12, 90, mode="a")
.circle(ti_radius, mode="s")
.clean()
)
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def model():
return (
cq.Workplane("XY")
.workplane()
.tag("mid_height")
.box(width, height, thickness)
# The screen goes rotated
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.faces(">Z")
.transformed(rotate=(scr_angle, 0, 0))
# Move the screen "lower" so it doesn't interfere
# so much with the back
.center(0, -2)
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.tag("slanted")
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# Arbitrary huge trapezoid to cut off the material *in front*
# of the inclined screen
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.placeSketch(cq.Sketch().trapezoid(1000, 1000, 90, mode="a"))
.cutBlind(1000)
# Trim the top
.workplaneFromTagged("mid_height")
.workplane(offset=21)
.placeSketch(cq.Sketch().trapezoid(1000, 1000, 90, mode="a"))
.cutBlind(100)
# 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)
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# Fillet top of the object
.edges("|X and >Z")
.fillet(3)
# Cut off viewport hole so we can see the screen
.workplaneFromTagged("slanted")
.placeSketch(viewport_cutout)
.cutBlind(-shell_t)
# Make hole for screen assembly so the whole screen fits
.workplaneFromTagged("slanted")
.workplane(offset=-shell_t, centerOption="CenterOfBoundBox")
# Left bezel is wider than right one, so this hole is displaced to the left
.center(-3, 0)
.placeSketch(screen_cutout)
.cutBlind(-scr_thickness)
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# Make it hollow
.faces("<Z")
# Can't be exactly shell_t because cq fails
.shell(-shell_t + 0.01)
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# Cut hole for the screen board and cables
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.workplaneFromTagged("slanted")
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.workplane(offset=-scr_thickness, centerOption="CenterOfBoundBox")
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.placeSketch(board_cutout)
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.cutBlind(-6)
.workplaneFromTagged("mid_height")
.workplane(offset=-thickness / 2, centerOption="CenterOfBoundBox")
.center(-width / 2, height_bottom - height / 2 - shell_t)
.placeSketch(mounting_pillars)
.extrude(10)
# Fillet the front edge of the screen case so it looks softer
.edges(">(0, -10, 5)")
.fillet(2)
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)
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if __name__ == "__main__":
print("Exporting")
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exporters.export(model(), "screen_mount.stl")
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offset_width = -width / 2
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right_side = (
model()
.faces(">X")
.workplane(centerOption="CenterOfBoundBox", offset=offset_width)
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.split(keepTop=True)
)
exporters.export(right_side, "right_screen_mount.stl")
left_side = (
model()
.faces(">X")
.workplane(centerOption="CenterOfBoundBox", offset=offset_width)
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.split(keepBottom=True)
)
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exporters.export(left_side, "left_screen_mount.stl")