Jerry
51 lines
1.7 KiB
Python
51 lines
1.7 KiB
Python
from math import tau
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from build123d import Align, BuildPart, Cylinder, Location, Locations, Mode
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from benchmark_common import circular_edges, polar_point, safe_fillet
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OUTER_DIAMETER = 80.0
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THICKNESS = 10.0
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CENTRAL_BORE_DIAMETER = 30.0
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BOLT_HOLE_COUNT = 6
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BOLT_HOLE_DIAMETER = 6.0
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BOLT_CIRCLE_DIAMETER = 60.0
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OUTER_FILLET = 1.5
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def gen_step():
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"""Return the circular flange benchmark model in millimeters."""
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with BuildPart() as flange:
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Cylinder(
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radius=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((0.0, 0.0, -1.0))):
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Cylinder(
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radius=CENTRAL_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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for index in range(BOLT_HOLE_COUNT):
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x_pos, y_pos = polar_point(BOLT_CIRCLE_DIAMETER / 2.0, tau * index / BOLT_HOLE_COUNT)
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with Locations(Location((x_pos, y_pos, -1.0))):
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Cylinder(
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radius=BOLT_HOLE_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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part = flange.part
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edges = []
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edges.extend(circular_edges(part, radius=OUTER_DIAMETER / 2.0, axis="z", coordinate=0.0))
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edges.extend(circular_edges(part, radius=OUTER_DIAMETER / 2.0, axis="z", coordinate=THICKNESS))
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part = safe_fillet(part, edges, radius=OUTER_FILLET)
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part.label = "benchmark_02_circular_flange_bolt_pattern"
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return part
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