cadquery/notebook_nueva/screen_mount.py

import cadquery2 as cq
from cadquery2 import exporters

# 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 = 69
thickness = 10

# Visible screen size
vis_w = 220
vis_h = 58
viewport_cutout = cq.Sketch().trapezoid(vis_w, vis_h, 90, mode="a")

# 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")

# Circuit board and cable space
board_cutout = cq.Sketch().polygon(
    [
        (0, 0),
        (width / 2 - 10, 0),
        (width / 2 - 10, vis_h - 20),
        (0, vis_h - 20),
        (0, 0),
    ],
    mode="a",
)
board_cutout_2 = cq.Sketch().polygon(
    [
        (0, 0),
        (width / 2 - 10 + 4, 0),
        (width / 2 - 10 + 4, vis_h - 20 + 4),
        (0, vis_h - 20 + 4),
        (0, 0),
    ],
    mode="a",
)


def model():
    return (
        cq.Workplane("XY")
        .workplane()
        .box(width, 59, 59)
        .faces(">Z")
        .transformed(rotate=(45, 0, 0))
        .tag("slanted")
        .placeSketch(cq.Sketch().trapezoid(1000, 1000, 90, mode="a"))
        .cutBlind(1000)
        # Cut off viewport
        .workplaneFromTagged("slanted")
        .placeSketch(viewport_cutout)
        .cutBlind(-shell_t)
        # Make hole for screen assembly
        .workplaneFromTagged("slanted")
        .workplane(offset=-shell_t, centerOption="CenterOfBoundBox")
        # Left bezel is 4mm wider than right one, so this hole is displaced to the left
        # Cut for the scren assembly
        .center(-4, 0)
        .placeSketch(screen_cutout)
        .cutBlind(-scr_thickness)
        # Cut for the screen board and cables
        .workplaneFromTagged("slanted")
        .workplane(offset=-shell_t - scr_thickness, centerOption="CenterOfBoundBox")
        .center(0, -(vis_h - 20) / 2)
        .placeSketch(board_cutout)
        .cutBlind(-5)
        # Make it hollow
        .faces("<Z")
        .shell(-2)
        # Cut AGAIN for the screen board and cables
        .workplaneFromTagged("slanted")
        .workplane(offset=-shell_t - scr_thickness, centerOption="CenterOfBoundBox")
        .center(0, -(vis_h -20 + 4) / 2)
        .placeSketch(board_cutout_2)
        .cutBlind(-7)
    )


exporters.export(model(), "screen_mount.stl")

left_cutout = cq.Sketch().polygon(
    [(0, 0), (160, 0), (160, -100), (0, -100), (0, 0)],
    mode="a",
)

right_side = (
    model()
    .faces("<Z")
    .workplane(centerOption="CenterOfBoundBox", offset=3)
    .center(-width / 2, height / 2)
    .placeSketch(left_cutout)
    .cutBlind(-100)
)

exporters.export(right_side, "right_screen_mount.stl")

left_side = (
    model()
    .faces("<Z")
    .workplane(centerOption="CenterOfBoundBox", offset=3)
    .center(0, height / 2)
    .placeSketch(left_cutout)
    .cutBlind(-100)
)

exporters.export(left_side, "left_screen_mount.stl")