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Adding Mini Nuke example
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348
examples/mini_nuke.py
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348
examples/mini_nuke.py
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"""
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Mini Nuke Example
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name: mini_nuke.py
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by: Gumyr
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date: April 3rd, 2024
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desc:
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This example demonstrates the creation of a container featuring a screw top designed
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after the "Mini Nuke" from the Fallout video game series. It showcases the process
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of constructing intricate non-planar objects and leverages the bd_warehouse thread
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and fastener library to create customize threads and Clearance Holes to match a variety
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of fasteners. The holes are positioned in locations that do not align with any primary
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axes, illustrating advanced techniques in 3D object design.
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license:
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Copyright 2024 Gumyr
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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"""
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import copy
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from airfoils import Airfoil
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from build123d import *
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from bd_warehouse.fastener import *
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from bd_warehouse.thread import *
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from ocp_vscode import show, set_defaults, Camera
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set_defaults(reset_camera=Camera.CENTER)
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nuke_diameter = 10 * CM
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thickness = 2
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multipart_fins = True
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#
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# -------- Core Nuke Shape --------
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#
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airfoil = Airfoil.NACA4("0045")
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aero_pnts = [Vector(p) for p in zip(airfoil._x_upper, airfoil._y_upper)]
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aero_pnts_max_y = max(p.Y for p in aero_pnts)
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aero_pnts_scaled = [p * (nuke_diameter / 2) / aero_pnts_max_y for p in aero_pnts]
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with BuildPart() as nuke_core:
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with BuildSketch(
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Plane((0, 0, 1.87 * nuke_diameter), x_dir=(0, 0, -1), z_dir=(0, 1, 0))
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) as nuke_profile:
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with BuildLine() as nuke_outline:
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aero = Spline(*aero_pnts_scaled[12:80]) # 200 points total
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nose = Spline(
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(-4.4, 0),
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aero @ 0,
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tangents=[(0, 1), aero % 0],
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tangent_scalars=(0.6, 1),
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)
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tail = Spline(
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aero @ 1,
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(1.54 * nuke_diameter, 0),
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tangents=[aero % 1, (0, -1)],
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tangent_scalars=(1.25, 0.80),
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)
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mirror(about=Plane.XZ)
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make_face()
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offset(amount=-2 * MM, mode=Mode.SUBTRACT) # Hollow it out
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split(bisect_by=Plane.XZ, keep=Keep.BOTTOM)
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with Locations(aero @ 0.6, aero @ 0.95):
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Circle(1 * MM)
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for line, param in [(nose, 1), (aero, 0.05), (aero, 0.3), (aero, 0.55)]:
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with Locations(line @ param):
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Rectangle(
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2 * MM,
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thickness,
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rotation=line.tangent_angle_at(param),
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mode=Mode.SUBTRACT,
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)
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with Locations(tail @ 0.45):
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Rectangle(
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5 * MM,
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thickness,
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rotation=tail.tangent_angle_at(0.45),
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)
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revolve()
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e_nose = nuke_core.edges().filter_by(GeomType.CIRCLE).sort_by(Axis.Z)[-2]
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nose_cone_limits = ((e_nose @ 0).Z, nuke_core.vertices().sort_by(Axis.Z)[-1].Z)
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e_body = nuke_core.edges().filter_by(GeomType.CIRCLE).sort_by(Axis.Z)[-4]
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nuke_body_limits = (nuke_core.vertices().sort_by(Axis.Z)[0].Z, (e_body @ 0).Z)
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# Used to position features below
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nuke_core_faces = nuke_core.faces().sort_by(Axis.Z)
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#
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# -------- Warning Ring --------
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#
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warning_ring_face = nuke_core.faces().sort_by(Axis.Z)[-15]
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warning_ring = thicken(warning_ring_face, -1 * MM)
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warning_ring.color = Color("Gold")
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#
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# -------- Fins --------
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#
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# Screws and screw heads
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fin_screw = CounterSunkScrew(size="M1.4-0.3", length=3 * MM, fastener_type="iso2009")
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# fin_screw_head = split(fin_screw, Plane.XY.offset(-fin_screw.head_height))
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fin_screw.color = Color(0xC0C0C0) # Silver
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with BuildPart() as fins:
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with BuildPart() as fin_outer_ring:
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with BuildSketch() as bs0:
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Circle(nuke_diameter / 2)
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Circle(nuke_diameter / 2 - thickness, mode=Mode.SUBTRACT)
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# Only want 1/4 of the ring
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Rectangle(
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2 * nuke_diameter,
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2 * nuke_diameter,
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align=Align.MIN,
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rotation=45,
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mode=Mode.INTERSECT,
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)
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extrude(amount=28)
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with BuildSketch(Plane.XZ) as bs1:
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Trapezoid(50, 19, 84, align=(Align.CENTER, Align.MIN))
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fillet(bs1.vertices().group_by(Axis.Y)[-1], 4 * MM)
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projection = project(mode=Mode.PRIVATE).faces().sort_by(Axis.Y)[1]
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thicken(projection, amount=-thickness, mode=Mode.SUBTRACT)
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with PolarLocations(0, 3, start_angle=90, angular_range=270):
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add(fin_outer_ring.part)
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outer_ring_face = fin_outer_ring.faces().sort_by(SortBy.AREA)[-1]
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with BuildPart() as fin_inner_ring:
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with BuildSketch(Plane.XY.offset(5.5)) as bs0:
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Circle(18)
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Circle(18 - thickness, mode=Mode.SUBTRACT)
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extrude(amount=15)
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with BuildPart() as fin_supports:
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with BuildSketch(Plane.XY.offset(10)) as fin_support_plan:
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Rectangle(53 * 2, thickness, rotation=-45)
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Rectangle(53 * 2, thickness, rotation=45)
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Circle(50 - thickness, mode=Mode.INTERSECT)
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Circle(18, mode=Mode.SUBTRACT)
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extrude(until=Until.NEXT, target=nuke_core.part)
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with BuildSketch(Plane.XZ) as support_trim:
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Trapezoid(176, 57, 45, align=(Align.CENTER, Align.MIN))
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split(bisect_by=Plane.YZ)
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revolve(mode=Mode.INTERSECT)
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fin_contacts = fin_supports.faces().group_by(Axis.Z)[-2]
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fin_tabs = extrude(fin_contacts, amount=1 * MM, dir=(0, 0, 1))
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support_fillet_edges = (
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fins.edges().filter_by(Axis.Z).filter_by_position(Axis.Z, 0.0, 27.5)
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)
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fillet(support_fillet_edges, 6 * MM)
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if multipart_fins:
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fin_plan = section(section_by=Plane.XY.offset(28 + 10))
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red_fins = extrude(fin_plan, amount=-28, mode=Mode.SUBTRACT)
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red_fins.color = Color("FireBrick")
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screw_uv_values = [(0.015, 0.15), (0.015, 0.55), (0.985, 0.15), (0.985, 0.55)]
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fin_screw_locs = []
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for angle in range(0, 360, 90):
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for u, v in screw_uv_values:
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position = outer_ring_face.position_at(u, v)
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normal = outer_ring_face.normal_at(position)
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fin_screw_locs.append(
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Rot(0, 0, angle) * Location(Plane(position, z_dir=normal))
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)
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with Locations(fin_screw_locs):
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ClearanceHole(fin_screw, depth=3 * MM, counter_sunk=True, fit="Close")
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fins.part.color = Color("OliveDrab")
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#
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# -------- Nose --------
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#
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# Screws and screw heads
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nose_screw = CounterSunkScrew(size="M3-0.5", length=10 * MM, fastener_type="iso14582")
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nose_screw_head = split(nose_screw, Plane.XY.offset(-nose_screw.head_height))
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nose_screw_head.color = Color(0xC0C0C0) # Silver
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with BuildPart() as nose:
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add(nuke_core.part)
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split(bisect_by=Plane.XY.offset(nose_cone_limits[0]))
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bottom_inside_edge, bottom_edge = (
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nose.edges().group_by(Axis.Z)[0].sort_by(SortBy.LENGTH)
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)
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nose_face = nose.faces().sort_by(SortBy.AREA)[-1]
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bottom_inside_edge_radius = bottom_inside_edge.bounding_box().size.X / 2
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# Thread
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with Locations((0, 0, bottom_edge.center().Z - 7 * MM)):
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nose_thread = IsoThread(
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major_diameter=2 * (bottom_edge.radius - 1 * MM),
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pitch=2 * MM,
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length=6 * MM,
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external=True,
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end_finishes=("fade", "square"),
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)
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with BuildSketch(Plane.XY.offset(bottom_edge.center().Z)):
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Circle(bottom_inside_edge_radius)
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Circle(nose_thread.min_radius - thickness, mode=Mode.SUBTRACT)
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extrude(until=Until.NEXT)
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with BuildSketch(Plane.XY.offset(bottom_edge.center().Z)):
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Circle(bottom_edge.radius)
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cap = extrude(amount=-1 * MM, taper=45)
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with BuildSketch(cap.faces().sort_by(Axis.Z)[0]):
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Circle(nose_thread.min_radius - thickness)
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extrude(amount=-1 * MM, mode=Mode.SUBTRACT)
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with BuildSketch(cap.faces().sort_by(Axis.Z)[0]):
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Circle(nose_thread.min_radius)
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Circle(nose_thread.min_radius - thickness, mode=Mode.SUBTRACT)
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extrude(amount=6 * MM)
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# Nose cone screws
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nose_screw_ref_pnt = nose_face.position_at(0.0, 0.3)
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nose_screw_ref_nrm = nose_face.normal_at(nose_screw_ref_pnt)
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nose_screw_locs = [
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Rot(0, 0, a) * Location(Plane(nose_screw_ref_pnt, z_dir=nose_screw_ref_nrm))
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for a in range(0, 360, 45)
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]
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with Locations(nose_screw_locs):
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ClearanceHole(nose_screw, fit="Close")
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nose.part.color = Color("FireBrick")
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#
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# -------- Final Nuke Shape --------
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#
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top_screw = CounterSunkScrew(size="M4-0.7", length=10 * MM, fastener_type="iso14582")
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top_screw_head = split(top_screw, Plane.XY.offset(-top_screw.head_height))
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top_screw_head.color = Color(0xC0C0C0) # Silver
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middle_screw = CounterSunkScrew(size="M6-1", length=10 * MM, fastener_type="iso14582")
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middle_screw_head = split(middle_screw, Plane.XY.offset(-middle_screw.head_height))
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middle_screw_head.color = Color(0xC0C0C0) # Silver
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# Internal thread
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nose_thread = IsoThread(
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major_diameter=2 * (bottom_edge.radius - 1 * MM),
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pitch=2 * MM,
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length=6 * MM,
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external=False,
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end_finishes=("square", "fade"),
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)
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with BuildPart() as nuke:
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add(nuke_core.part)
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split(bisect_by=Plane.XY.offset(nuke_body_limits[1]), keep=Keep.BOTTOM)
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top_edge = (
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nuke.edges()
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.filter_by(GeomType.CIRCLE)
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.group_by(Axis.Z)[-1]
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.sort_by(SortBy.LENGTH)[-1]
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)
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with BuildSketch(Plane.XY.offset(top_edge.center().Z)):
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Circle(top_edge.radius)
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extrude(amount=-6 * MM, taper=150)
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with BuildSketch(Plane.XY.offset(top_edge.center().Z)):
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Circle(nose_thread.major_diameter / 2 - 0.02 * MM)
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extrude(amount=-6 * MM, mode=Mode.SUBTRACT)
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with Locations((0, 0, nuke_body_limits[1] - 6 * MM)):
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add(nose_thread)
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# Create sockets for the fins
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offset(fin_tabs, amount=0.2 * MM, mode=Mode.SUBTRACT)
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# Top screws
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top_face = nuke_core_faces[-11]
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top_face_screw_ref_pnt = top_face.position_at(0.0, 0.5)
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top_face_screw_ref_nrm = top_face.normal_at(0.0, 0.5)
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top_face_screw_locs = [
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Rot(0, 0, a + 22.5)
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* Location(Plane(top_face_screw_ref_pnt, z_dir=top_face_screw_ref_nrm))
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for a in range(0, 360, 45)
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]
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with Locations(top_face_screw_locs):
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ClearanceHole(top_screw, depth=1 * CM, fit="Close")
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# Middle screws
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middle_face = nuke_core_faces[-21]
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middle_face_screw_ref_pnt = middle_face.position_at(0.0, 0.5)
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middle_face_screw_ref_nrm = middle_face.normal_at(0.0, 0.5)
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middle_face_screw_locs = [
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Rot(0, 0, a)
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* Location(Plane(middle_face_screw_ref_pnt, z_dir=middle_face_screw_ref_nrm))
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for a in range(0, 360, 60)
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]
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with Locations(middle_face_screw_locs):
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ClearanceHole(middle_screw, depth=1 * CM, fit="Close")
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# Remove the warning ring as it's a separate piece
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add(warning_ring, mode=Mode.SUBTRACT)
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# Add whistles
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whistle_ring_face = nuke_core_faces[-26]
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whistle_uv = (0.0625, 0.5)
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normal = whistle_ring_face.normal_at(*whistle_uv)
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origin = whistle_ring_face.position_at(*whistle_uv)
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pln = Plane(
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origin=origin + Vector(normal.X, normal.Y, -0.5) * 2 * MM,
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z_dir=normal + Vector(0, 0, 0.6),
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)
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with BuildSketch(pln):
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RectangleRounded(8 * MM, 8 * MM, 1 * MM)
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Rectangle(6 * MM, 6 * MM, mode=Mode.SUBTRACT)
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whistle = extrude(until=Until.PREVIOUS, dir=normal + Vector(0, 0, 1))
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whistle_flipped = mirror(whistle, about=Plane.XZ)
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mirror(whistle, about=Plane.YZ.rotated((0, 0, 22.5)))
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mirror(whistle_flipped, about=Plane.YZ.rotated((0, 0, -22.5)))
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nuke.part.color = Color("OliveDrab")
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#
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# -------- Final Assembly --------
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#
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components = (
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[nuke.part, warning_ring, fins.part, nose.part]
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+ [copy.copy(nose_screw_head).locate(l) for l in nose_screw_locs]
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+ [copy.copy(top_screw_head).locate(l) for l in top_face_screw_locs]
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+ [copy.copy(middle_screw_head).locate(l) for l in middle_face_screw_locs]
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+ [copy.copy(fin_screw).locate(l) for l in fin_screw_locs]
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)
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if multipart_fins:
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components.append(red_fins)
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nuke_assembly = Compound(children=components)
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show(
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nuke_assembly,
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center_grid=True,
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names=["nuke_assembly"],
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)
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