87 lines
2.9 KiB
Python
87 lines
2.9 KiB
Python
# pyright: reportUnusedCallResult=false, reportWildcardImportFromLibrary=false
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from build123d import *
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bearing_offset = 20
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bearing_diameter = 22
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bearing_through_hole_diameter = 15
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bearing_height = 7
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shaft_clearance_diameter = 25
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core_width = 40
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thickness = 20
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screw_blocks_width = thickness
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screw_blocks_height = bearing_offset
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screw_blocks_radius = 3
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screw_head_diameter = 8.5
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screw_head_depth = 5
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screw_body_diameter = 5
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track_width = 6.2
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track_height = 1.8
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assert (bearing_offset - bearing_diameter / 2) > 0
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assert (core_width - bearing_diameter) > 0
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assert (screw_blocks_width - (screw_blocks_radius * 2)) >= 0
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assert (bearing_offset - screw_blocks_height) >= 0
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with BuildPart() as drive_shaft_mount:
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with BuildSketch() as sketch:
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with BuildLine() as profile:
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l1 = Line(
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(0,0),
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((core_width / 2) + screw_blocks_width, 0)
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)
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polyline_path = (
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l1 @ 1,
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((l1 @ 1).X, screw_blocks_height),
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(core_width / 2, screw_blocks_height),
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)
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match (float)(bearing_offset - screw_blocks_height):
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case 0:
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FilletPolyline(
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*polyline_path,
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radius=screw_blocks_radius
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)
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case len if len > 0 and len < screw_blocks_radius:
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sbl = FilletPolyline(
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*polyline_path,
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radius=screw_blocks_radius
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)
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Line(
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sbl @ 1,
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((sbl @ 1).X, bearing_offset)
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)
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case len if len >= screw_blocks_radius:
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FilletPolyline(
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*polyline_path,
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(core_width / 2, bearing_offset),
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radius=screw_blocks_radius
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)
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case _: assert False
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CenterArc((0, bearing_offset), core_width / 2, 90, -90)
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mirror(profile.line, Plane.YZ)
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make_face()
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with Locations((0, bearing_offset)):
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Circle(bearing_through_hole_diameter / 2, mode=Mode.SUBTRACT)
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extrude(amount=thickness / 2)
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mirror(about=Plane.XY)
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with Locations((0, bearing_offset, drive_shaft_mount.faces().sort_by(Axis.Z)[-1].center().Z)):
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Hole(bearing_diameter / 2, (thickness / 2) + (bearing_height / 2))
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Hole(shaft_clearance_diameter / 2, (thickness / 2) - (bearing_height / 2))
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Box(core_width + (screw_blocks_width * 2), track_width, track_height, (90, 0, 0), (Align.CENTER, Align.CENTER, Align.MIN))
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with Locations(drive_shaft_mount.faces().filter_by(Plane.XZ).sort_by(Axis.Y)[-2:]):
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CounterBoreHole(screw_body_diameter / 2, screw_head_diameter / 2, screw_head_depth)
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assert drive_shaft_mount.part is not None
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export_step(drive_shaft_mount.part, "drive shaft mount.step")
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