120 lines
3.0 KiB
Python
120 lines
3.0 KiB
Python
import cadquery as cq
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from cadquery import exporters
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import dimensions as dim
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from utils import extrude_shape2, hex_vents, punch_hole
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# Dimensions for countersunk M4 screws
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m4_top = 9
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m4_bottom = 4
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lip_thickness = 1.5
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# Position of pillar + shell_t + pillar "radius" + lip
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dim.height = (
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max([y for _, y in dim.mounting_pillar_positions]) + 6 + dim.shell_t + lip_thickness
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)
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thickness = dim.shell_t
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front_lip = 8
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def model():
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# Create the basic shape of the case lid
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model = (
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cq.Workplane("XY")
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# Hollow box
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.box(dim.width, dim.height, thickness)
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.edges("|Z and >Y")
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.fillet(2)
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)
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# Make many holes
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vent = hex_vents(size=6, width=dim.width * 0.9, height=dim.height * 0.9)[0]
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model = punch_hole(
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model=model,
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face=">Z",
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w=dim.width,
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h=dim.height,
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x_offset=0.05 * dim.width,
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y_offset=0.05 * dim.height,
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hole=vent,
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depth=thickness,
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)
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# Add screw holes
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for position in dim.mounting_pillar_positions:
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model = (
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model.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center(
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-dim.width / 2 + position[0], dim.height / 2 - position[1] - dim.shell_t
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)
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.placeSketch(cq.Sketch().circle(m4_top / 2 + 1.5))
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.extrude(-thickness)
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.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center(
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-dim.width / 2 + position[0], dim.height / 2 - position[1] - dim.shell_t
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)
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.cskHole(m4_bottom, m4_top, 82, depth=None)
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)
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# Add front lip
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model = (
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model.faces(">Z")
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.workplane(centerOption="CenterOfBoundBox")
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.center(0, -dim.height / 2 + lip_thickness / 2)
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.placeSketch(
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cq.Sketch().trapezoid(dim.width - 2 * dim.shell_t, lip_thickness, 90)
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)
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.extrude(-front_lip - thickness)
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)
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return model
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def decorative_cover():
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# A decorative thingie to cover the ugly seam in the middle
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model = cq.Workplane("XY").box(10, dim.height, 1).edges("|Z").fillet(1)
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vent = hex_vents(
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size=6, width=dim.width * 0.9, height=dim.height * 0.9, density=0.775
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)[0]
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model = extrude_shape2(
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model=model,
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face=">Z",
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w=dim.width,
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h=dim.height,
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x_offset=0.05 * dim.width,
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y_offset=0.05 * dim.height,
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hole=vent,
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depth=3,
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)
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return model
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if __name__ == "__main__":
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model = model()
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exporters.export(model, "lid.stl")
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cover = decorative_cover()
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exporters.export(cover, "lid_cover.stl")
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exporters.export(
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model,
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"lid.svg",
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opt={
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"projectionDir": (0, 0, 1),
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},
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)
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exporters.export(
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model.faces(">X").workplane(offset=-dim.width / 2).split(keepTop=True),
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"right_side_lid.stl",
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)
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exporters.export(
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model.faces(">X").workplane(offset=-dim.width / 2).split(keepBottom=True),
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"left_side_lid.stl",
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)
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