cadquery/notebook_nueva/screen_mount.py

163 lines
4.7 KiB
Python

import cadquery2 as cq
from cadquery2 import exporters
from modelo import (
kbd_height,
kbd_width,
mounting_pillar_positions,
shell_t,
ti_depth,
ti_radius,
)
# Size of the whole object
width = kbd_width + 2 * shell_t
height = 66
height_bottom = 59
thickness = 48 # Will be shorter after construction
# 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")
# 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.
board_cutout = cq.Sketch().trapezoid(
scr_w + 5,
scr_h - 10,
90,
mode="a",
)
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")
)
def model():
return (
cq.Workplane("XY")
.workplane()
.tag("mid_height")
.box(width, height, thickness)
# The screen goes rotated
.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)
.tag("slanted")
# Arbitrary huge trapezoid to cut off the material *in front*
# of the inclined screen
.placeSketch(cq.Sketch().trapezoid(1000, 1000, 90, mode="a"))
.cutBlind(1000)
# 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)
# Trim the top
.workplaneFromTagged("mid_height")
.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
.shell(-shell_t + 0.01)
# Cut hole for the screen board and cables
.workplaneFromTagged("slanted")
.workplane(offset=-scr_thickness, centerOption="CenterOfBoundBox")
.placeSketch(board_cutout)
.cutBlind(-6)
# Make small hole for the keyboard cable
.faces(">Y")
.workplane(offset=-5, centerOption="CenterOfBoundBox")
.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_bottom - height / 2)
.placeSketch(mounting_pillars)
.extrude(10)
)
if __name__ == "__main__":
print("Exporting")
exporters.export(model(), "screen_mount.stl")
offset_width = -width / 2
right_side = (
model()
.faces(">X")
.workplane(centerOption="CenterOfBoundBox", offset=offset_width)
.split(keepTop=True)
)
exporters.export(right_side, "right_screen_mount.stl")
left_side = (
model()
.faces(">X")
.workplane(centerOption="CenterOfBoundBox", offset=offset_width)
.split(keepBottom=True)
)
exporters.export(left_side, "left_screen_mount.stl")