Jerry
73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
"""Parametric V1 connecting-rod sample routed to the build123d backend."""
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from build123d import Align, Box, BuildPart, BuildSketch, Cylinder, Location, Locations, Mode, Plane, SlotOverall, extrude
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CENTER_DISTANCE = 120.0
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THICKNESS = 14.0
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BIG_END_OUTER_DIAMETER = 56.0
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BIG_END_BORE_DIAMETER = 36.0
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SMALL_END_OUTER_DIAMETER = 36.0
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SMALL_END_BORE_DIAMETER = 20.0
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WEB_WIDTH = 24.0
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POCKET_LENGTH = 72.0
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POCKET_WIDTH = 12.0
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POCKET_DEPTH = 3.0
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def gen_step():
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"""Return a closed, STEP-ready connecting-rod solid in millimeters."""
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half_distance = CENTER_DISTANCE / 2.0
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with BuildPart() as rod:
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with Locations(Location((-half_distance, 0.0, 0.0))):
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Cylinder(
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radius=BIG_END_OUTER_DIAMETER / 2.0,
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height=THICKNESS,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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)
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with Locations(Location((half_distance, 0.0, 0.0))):
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Cylinder(
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radius=SMALL_END_OUTER_DIAMETER / 2.0,
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height=THICKNESS,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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)
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Box(
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CENTER_DISTANCE,
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WEB_WIDTH,
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THICKNESS,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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)
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with Locations(Location((-half_distance, 0.0, -1.0))):
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Cylinder(
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radius=BIG_END_BORE_DIAMETER / 2.0,
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height=THICKNESS + 2.0,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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mode=Mode.SUBTRACT,
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)
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with Locations(Location((half_distance, 0.0, -1.0))):
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Cylinder(
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radius=SMALL_END_BORE_DIAMETER / 2.0,
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height=THICKNESS + 2.0,
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align=(Align.CENTER, Align.CENTER, Align.MIN),
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mode=Mode.SUBTRACT,
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)
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with BuildSketch(Plane.XY):
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SlotOverall(width=POCKET_LENGTH, height=POCKET_WIDTH)
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extrude(amount=POCKET_DEPTH, mode=Mode.SUBTRACT)
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with BuildSketch(Plane.XY.offset(THICKNESS - POCKET_DEPTH)):
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SlotOverall(width=POCKET_LENGTH, height=POCKET_WIDTH)
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extrude(amount=POCKET_DEPTH, mode=Mode.SUBTRACT)
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result = rod.part
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result.label = "cad_router_v1_connecting_rod"
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return result
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