54 lines
1.4 KiB
Python
54 lines
1.4 KiB
Python
# This is the arm from the tripod to the "elbow"
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import cadquery2 as cq
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from cadquery2 import exporters
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from hinge import hinge_gap, hinge_w
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# monitor hinge dimensions
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inner_monitor_hinge = 3.2 / 2
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outer_monitor_hinge = hinge_w / 2
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# tripod hinge dimensions
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inner_tripod_hinge = 7.5 / 2
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outer_tripod_hinge = 17.5 / 2
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tripod_hinge_width = 5.5
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monitor_hinge_shape = (
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cq.Sketch().circle(outer_monitor_hinge).circle(inner_monitor_hinge, mode="s")
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)
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tripod_hinge_shape = (
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cq.Sketch().circle(outer_tripod_hinge).circle(inner_tripod_hinge, mode="s")
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)
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arm_width = min(tripod_hinge_width, hinge_gap)
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arm_length = 150
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lower_arm = (
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cq.Workplane("XY")
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.rect(arm_width, arm_width)
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.extrude(arm_length)
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.edges("|Z or <Z or >Z")
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.fillet(0.25)
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.faces(">Y")
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# Add hinge that connects to the monitor
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.workplane(
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centerOption="CenterOfBoundBox", offset=(hinge_gap - arm_width) / 2
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)
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.center(0, arm_length / 2 + (outer_monitor_hinge - inner_monitor_hinge))
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.placeSketch(monitor_hinge_shape)
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.extrude(-hinge_gap)
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.center(0, -(arm_length + outer_tripod_hinge))
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# Undo previous offset + new offset
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.workplane(
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offset=-(hinge_gap - arm_width - tripod_hinge_width + arm_width) / 2
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)
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# Add hinge that connects to the tripod
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.placeSketch(tripod_hinge_shape)
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.extrude(-tripod_hinge_width)
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)
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exporters.export(lower_arm, "lower_arm.stl")
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