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brace.py
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import cadquery as cq
import dims
import importlib
importlib.reload(dims)
brace = (
cq
.Workplane()
.moveTo(-dims.brace.width / 2, 0)
.vLine(-dims.bracket.thick)
.hLineTo(dims.brace.profile1[0] - dims.chimney.mountface.width / 2)
.lineTo(
dims.brace.mount_face[0] - dims.chimney.mountface.width / 2,
dims.brace.mount_face[1] + dims.magnet.slot.thick + dims.magnet.wall_thick
)
.vLine(-dims.magnet.slot.thick - dims.magnet.wall_thick)
.hLine(dims.chimney.mountface.width)
.vLine(dims.magnet.slot.thick + dims.magnet.wall_thick)
.lineTo(dims.brace.profile1[0] + dims.chimney.mountface.width / 2, 0)
.close()
.extrude(dims.brace.profile1[2] + dims.chimney.mountface.height)
)
cutters = []
cutters.append(
cq
.Workplane('YZ')
.moveTo(dims.brace.mount_face[1], 0)
.lineTo(-dims.bracket.thick, dims.brace.profile1[2])
.hLineTo(0)
.vLineTo(0)
.close()
.extrude(dims.brace.width + dims.chimney.mountface.width, both=True)
)
cutters.append(
cq
.Workplane('YZ')
.moveTo(dims.brace.mount_face[1], dims.chimney.mountface.height)
.lineTo(
-dims.bracket.thick,
dims.brace.profile1[2] + dims.chimney.mountface.height
)
.hLineTo(dims.brace.mount_face[1])
.close()
.extrude(dims.brace.width + dims.chimney.mountface.width, both=True)
)
for cutter in cutters:
brace = brace.cut(cutter)
del cutter
cutters = []
brace = (
brace
.tag('mountbase')
.edges("|Z")
.edges(
cq.NearestToPointSelector((
dims.brace.profile1[0] - dims.chimney.mountface.width / 2,
-dims.bracket.thick,
dims.brace.profile1[1] + dims.chimney.mountface.height / 2
))
)
.fillet(10)
.edges("|Z")
.edges(">(1, 1, 0)")
.fillet(10 + dims.bracket.thick)
.faces(">Y[1]", tag='mountbase')
.workplane(
centerOption='ProjectedOrigin',
origin=(0, 0, dims.brace.profile1[2] + dims.chimney.mountface.height / 2)
)
.tag('bolt plane')
.pushPoints([(-30, 0), (30, 0)])
.cboreHole(
dims.vac_brack.hole.diam
, dims.vac_brack.hole.cbore_diam
, dims.vac_brack.hole.cbore_depth
)
)
for sign in [-1, 1]:
brace = (
brace
.faces("<Y", tag="mountbase")
.workplane(centerOption='CenterOfMass')
.moveTo(
sign * (dims.chimney.mountface.align.hole.diam + dims.vac.wall_thick) / 2,
0
)
.circle(dims.chimney.mountface.align.hole.diam / 2)
.cutBlind(
-dims.chimney.mountface.align.stub.length + 0.1,
taper=dims.chimney.mountface.align.stub.taper
)
)
magnet_cutter = (
cq
.Workplane('XZ', origin=(0, 0, 0))
.moveTo(dims.magnet.slot.width / 2, dims.magnet.diam)
.vLineTo(0)
.tangentArcPoint((-dims.magnet.slot.width / 2, 0), relative=False)
.vLineTo(dims.magnet.diam)
.close()
.extrude(dims.magnet.slot.thick)
.rotate((0, 0, 0), (0, 0, 1), 180)
)
ys = [pos[1] for pos in dims.chimney.mountface.magnet.position]
y_mid = (min(ys) + max(ys)) / 2
plane = (
brace
.faces("<Y", tag="mountbase")
.workplane(centerOption='CenterOfMass')
.plane
)
for pos in dims.chimney.mountface.magnet.position:
angle = 180 if (pos[1] < y_mid) else 0
final_pos = plane.toWorldCoords((pos[0], pos[1], -dims.magnet.wall_thick))
cutters.append(
magnet_cutter
.rotate((0, 0, 0), (0, 1, 0), angle)
.translate(final_pos)
)
del magnet_cutter
for cutter in cutters:
brace = brace.cut(cutter)
del cutter