1486 lines
52 KiB
Python
1486 lines
52 KiB
Python
from nhf.build import Model, TargetKind, target, assembly, submodel
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from nhf.materials import Role, Material
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import nhf.utils
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from nhf.parts.fasteners import FlatHeadBolt, HexNut, Washer
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import math
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from dataclasses import dataclass, field
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import cadquery as Cq
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NUT_COMMON = HexNut(
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# FIXME: measure
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mass=0.0,
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diam_thread=6.0,
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pitch=1.0,
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thickness=5.0,
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width=9.89,
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)
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WASHER_COMMON = Washer(
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# FIXME: measure
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mass=0.0,
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diam_thread=6.0,
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diam_outer=11.68,
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thickness=1.5,
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)
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BOLT_COMMON = FlatHeadBolt(
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# FIXME: measure
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mass=0.0,
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diam_head=12.8,
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height_head=2.8,
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diam_thread=6.0,
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height_thread=30.0,
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pitch=1.0,
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)
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BOLT_BEARING = FlatHeadBolt(
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# FIXME: measure
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mass=0.0,
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diam_head=12.8,
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height_head=2.8,
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diam_thread=4.0,
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height_thread=30.0,
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pitch=1.0,
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)
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@dataclass(frozen=True)
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class Motor(Model):
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"""
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Drive motor for the main barrel
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"""
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mass: float = 589.7
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voltage: float = 12.0 # V
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power: float = 30.0 # watts
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diam_thread: float = 4.0
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diam_body: float = 51.0
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height_body: float = 83.5
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diam_ring: float = 25.93
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height_ring: float = 6.55
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height_shaft: float = 38.1
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# Distance between anchor and the body
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dx_anchor: float = 20.2
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height_anchor: float = 10.4
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def __post_init__(self):
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assert self.diam_ring < self.diam_body
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assert self.height_ring < self.height_body
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assert self.dx_anchor < self.diam_body / 2
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pass
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def generate(self) -> Cq.Workplane:
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result = (
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Cq.Workplane()
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.cylinder(
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radius=self.diam_body/2,
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height=self.height_body - self.height_ring,
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centered=(True, True, False)
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)
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.faces(">Z")
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.cylinder(
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radius=self.diam_ring/2,
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height=self.height_ring,
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centered=(True, True, False)
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)
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)
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shaft = Cq.Solid.makeCylinder(
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radius=self.diam_thread/2,
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height=self.height_shaft,
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pnt=(0, 0, self.height_body)
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)
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anchor = Cq.Solid.makeCylinder(
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radius=self.diam_thread/2,
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height=self.height_anchor,
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pnt=(0, 0, self.height_body - self.height_ring)
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)
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result = result + shaft + anchor.moved(self.dx_anchor, 0, 0) + anchor.moved(-self.dx_anchor, 0, 0)
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return result
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@dataclass
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class Onbashira(Model):
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n_side: int = 6
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# Dimensions of each side panel
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side_width: float = 150.0
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# Side panels have different lengths
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side_length1: float = 200.0
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side_length2: float = 350.0
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side_length3: float = 400.0
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side_thickness: float = 25.4 / 8
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section1_gohei_loc: float = 30.0
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gohei_bolt_diam: float = 6.0
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# The angle joint bridges between two sets of side panels.
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# Extra thickness beyond the onbashira's body
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angle_joint_thickness: float = 10.0
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# Z-axis size of each angle joint
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angle_joint_depth: float = 50.0
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# Gap of each angle joint to connect the outside to the inside
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angle_joint_gap: float = 8.0
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angle_joint_bolt_length: float = 50.0
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angle_joint_bolt_diam: float = BOLT_COMMON.diam_thread
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angle_joint_bolt_head_diam: float = 13.0
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angle_joint_bolt_head_depth: float = 3.0
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# Position of the holes, with (0, 0) being the centre of each side
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angle_joint_bolt_position: list[float] = field(default_factory=lambda: [
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(40, 10),
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])
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angle_joint_flange_thickness: float = 7.8
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angle_joint_flange_radius: float = 23.0
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angle_joint_flange_extension: float = 23.0
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# Mating structure on the angle joint
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angle_joint_conn_thickness: float = 4.0
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angle_joint_conn_depth: float = 15.0
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angle_joint_conn_width: float = 15.0
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angle_joint_bind_radius: float = 135.0
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chamber_side_length: float = 400.0
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chamber_side_width_ex: float = 20.0
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# Dimensions of gun barrels
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barrel_diam: float = 25.4 * 1.5
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barrel_wall_thickness: float = 25.4 / 8
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barrel_length: float = 25.4 * 12
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# Gap between the stator edge and the inner face of the barrel
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stator_gap: float = 3.0
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# Radius from barrel centre to axis
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rotation_radius: float = 64.0
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n_bearing_balls: int = 12
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# Thickness of bearing disks
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bearing_thickness: float = 20.0
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bearing_track_radius: float = 97.0
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# Gap between the inner and outer bearing disks
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bearing_gap: float = 10.0
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bearing_disk_gap: float = 10.0
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bearing_spindle_max_diam: float = 13.0
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bearing_gasket_extend: float = 12.0
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bearing_disk_thickness: float = 25.4 / 16
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# Coupling mechanism onto the chassis
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stator_coupler_width: float = 14.0
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stator_coupler_thickness: float = 30.0
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stator_coupler_thickness_inner: float = 10.0
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stator_bind_radius: float = 117.0
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# Extra bind sites for stator to prevent warping
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stator_bind_extra: int = 2
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rotor_inner_radius: float = 36.0
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rotor_bind_bolt_diam: float = BOLT_COMMON.diam_thread
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rotor_bind_radius: float = 82.0
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rotor_bind_extra: int = 1
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rotor_spacer_outer_diam: float = 15.0
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handle_base_height: float = 10.0
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handle_thickness: float = 17.0
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handle_length: float = 140.0
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handle_height: float = 50.0
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motor: Motor = Motor()
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material_side: Material = Material.WOOD_BIRCH
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material_bearing: Material = Material.PLASTIC_PLA
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material_spacer: Material = Material.PLASTIC_PLA
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material_bearing_ball: Material = Material.PLASTIC_PLA
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material_barrel: Material = Material.ACRYLIC_BLACK
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material_brace: Material = Material.PLASTIC_PLA
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material_fastener: Material = Material.STEEL_STAINLESS
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def __post_init__(self):
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assert self.n_side >= 3
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# Bulk must be large enough for the barrel + bearing to rotate
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assert self.bulk_radius - self.side_thickness - self.bearing_thickness > self.rotation_radius + self.barrel_diam / 2
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assert BOLT_COMMON.diam_thread < self.rotor_bind_radius < self.bearing_track_radius
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assert self.rotor_inner_radius < self.bearing_track_radius < self.angle_joint_bind_radius
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assert self.angle_joint_thickness > self.side_thickness
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for (x, y) in self.angle_joint_bolt_position:
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assert y < self.angle_joint_depth / 2
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assert self.angle_joint_depth / 2 > self.angle_joint_conn_depth
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assert self.angle_joint_thickness > self.angle_joint_conn_thickness
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# Ensure the stator could be printed on a 12x12in board
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assert self.side_width * 2 < 12 * 25.4
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assert self.barrel_wall_thickness * 2 < self.barrel_diam
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@property
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def angle_side(self) -> float:
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return 360 / self.n_side
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@property
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def delta_side_width(self) -> float:
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"""
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Difference between interior and exterior side width due to side thickness
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"""
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theta = math.pi / self.n_side
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dt = self.side_thickness * math.tan(theta)
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return dt * 2
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@property
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def side_width_inner(self) -> float:
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"""
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Interior side width
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If outer width is `wi`, inner width is `wo`, each side's cross section
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is a trapezoid with sides `wi`, `wo`, and height `h` (side thickness)
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"""
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return self.side_width - self.delta_side_width
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@property
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def angle_joint_extra_width(self) -> float:
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theta = math.pi / self.n_side
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dt = self.angle_joint_thickness * math.tan(theta)
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return dt * 2
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@property
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def angle_dihedral(self) -> float:
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return 180 - self.angle_side
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@property
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def bulk_radius(self) -> float:
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"""
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Radius of the bulk (surface of each side) to the centre
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"""
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return self.side_width / 2 / math.tan(math.radians(self.angle_side / 2))
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@property
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def chamber_side_width(self) -> float:
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return self.side_width + self.chamber_side_width_ex
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@property
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def chamber_bulk_radius(self) -> float:
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"""
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Radius of the bulk (surface of each side) to the centre
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"""
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return self.chamber_side_width / 2 / math.tan(math.radians(self.angle_side / 2))
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@target(name="sanding-block")
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def sanding_block(self) -> Cq.Workplane:
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# Dihedral angle / 2
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angle = math.radians(180 / self.n_side)
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r = math.sin(angle)
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x = 50.0
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return (
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Cq.Workplane()
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.sketch()
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.polygon([(0,0), (0, x), (x, (1-r) * x), (x, 0)])
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.finalize()
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.extrude(self.side_width * 1.5)
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)
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@target(name="stator-coupler")
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def stator_coupler(self) -> Cq.Workplane:
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"""
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Couples the stator to the chassis
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"""
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r1 = self.angle_joint_bind_radius
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r2 = self.stator_bind_radius
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assert r1 > r2
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l = r1 - r2
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w = self.stator_coupler_width
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h = self.stator_coupler_thickness
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h_step = h - self.stator_coupler_thickness_inner
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intersector = Cq.Solid.makeBox(
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length=l + w,
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width=w,
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height=h_step,
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).moved(0, -w/2, 0)
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profile = (
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Cq.Sketch()
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.rect(l, w)
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.push([
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(-l/2, 0),
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(l/2, 0),
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])
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.circle(w/2, mode="a")
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.push([
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(-l/2, 0),
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(l/2, 0),
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])
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.circle(BOLT_COMMON.diam_thread/2, mode="s")
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)
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result = (
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Cq.Workplane()
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.placeSketch(profile)
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.extrude(h)
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)
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dx = l / 2
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result = result - intersector
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result.tagAbsolute(f"holeOB", (-dx, 0, 0), direction="-Z")
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result.tagAbsolute(f"holeIB", (+dx, 0, h_step), direction="-Z")
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result.tagAbsolute(f"holeOF", (-dx, 0, h), direction="+Z")
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result.tagAbsolute(f"holeIF", (+dx, 0, h), direction="+Z")
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return result
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@target(name="bearing-stator", kind=TargetKind.DXF)
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def profile_bearing_stator(self) -> Cq.Sketch:
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assert self.stator_bind_radius < self.angle_joint_bind_radius
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return (
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Cq.Sketch()
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.circle(self.bulk_radius - self.side_thickness - self.stator_gap)
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#.regularPolygon(self.side_width - self.side_thickness - self.stator_gap, self.n_side*2)
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.circle(self.bearing_track_radius + self.bearing_gap/2, mode="s")
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.reset()
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.regularPolygon(
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self.stator_bind_radius, self.n_side * (1 + self.stator_bind_extra),
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mode="c", tag="bolt")
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.vertices(tag="bolt")
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.circle(self.rotor_bind_bolt_diam/2, mode="s")
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)
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def bearing_stator(self) -> Cq.Workplane:
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result = (
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Cq.Workplane()
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.placeSketch(self.profile_bearing_stator())
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.extrude(self.bearing_disk_thickness)
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)
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br = self.stator_bind_radius
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th1 = math.radians(360 / self.n_side)
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th2 = math.radians(360 / (self.n_side * (1 + self.stator_bind_extra)))
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for i in range(self.n_side):
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angle = (i+0.5) * th1
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result.faces(">Z").moveTo(
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br * math.cos(angle),
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br * math.sin(angle),
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).tagPlane(f"holeF{i}")
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result.faces("<Z").moveTo(
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br * math.cos(-angle),
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br * math.sin(-angle),
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).tagPlane(f"holeB{i}", direction="-Z")
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for j in range(1, 1 + self.stator_bind_extra):
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angle2 = angle + (j + 1) * th2
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result.faces("<Z").moveTo(
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br * math.cos(-angle2),
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br * math.sin(-angle2),
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).tagPlane(f"holeE{i}", direction="-Z")
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return result
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@target(name="bearing-rotor", kind=TargetKind.DXF)
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def profile_bearing_rotor(self) -> Cq.Sketch:
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bolt_angle = (180 / self.n_side) * 1.5
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n_binds = 1 + self.rotor_bind_extra
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return (
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Cq.Sketch()
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.circle(self.bearing_track_radius - self.bearing_gap/2)
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.circle(self.rotor_inner_radius, mode="s")
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.reset()
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.regularPolygon(
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self.rotation_radius, self.n_side,
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mode="c", tag="corners")
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.vertices(tag="corners")
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.circle(self.barrel_diam/2, mode="s")
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.reset()
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.regularPolygon(
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r=self.rotor_bind_radius,
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n=self.n_side * n_binds,
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mode="c", tag="bolt",
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angle=bolt_angle)
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.vertices(tag="bolt")
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.circle(self.rotor_bind_bolt_diam/2, mode="s")
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)
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def bearing_rotor(self) -> Cq.Workplane:
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return (
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Cq.Workplane()
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.placeSketch(self.profile_bearing_rotor())
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.extrude(self.bearing_disk_thickness)
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)
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@target(name="bearing-gasket", kind=TargetKind.DXF)
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def profile_bearing_gasket(self) -> Cq.Sketch:
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dr = self.bearing_gasket_extend
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eps = 0.05
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return (
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Cq.Sketch()
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.circle(self.bearing_track_radius + dr)
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.circle(self.bearing_track_radius - dr, mode="s")
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.reset()
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.regularPolygon(
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self.bearing_track_radius, self.n_bearing_balls,
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mode="c", tag="corners")
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.vertices(tag="corners")
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.circle(BOLT_BEARING.diam_thread, mode="s")
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)
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def bearing_gasket(self) -> Cq.Workplane:
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return (
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Cq.Workplane()
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.placeSketch(self.profile_bearing_gasket())
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.extrude(self.bearing_disk_thickness)
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)
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@target(name="pipe", kind=TargetKind.DXF)
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def pipe(self) -> Cq.Sketch:
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"""
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The rotating pipes. Purely for decoration
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"""
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pass
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@target(name="stator-spacer")
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def stator_spacer(self) -> Cq.Solid:
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outer = Cq.Solid.makeCylinder(
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radius=self.rotor_spacer_outer_diam/2,
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height=self.bearing_disk_gap,
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)
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inner = Cq.Solid.makeCylinder(
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radius=self.rotor_bind_bolt_diam/2,
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height=self.bearing_disk_gap
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)
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return outer - inner
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@target(name="rotor-spacer")
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def rotor_spacer(self) -> Cq.Solid:
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outer = Cq.Solid.makeCylinder(
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radius=self.rotor_spacer_outer_diam/2,
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height=self.bearing_disk_gap,
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)
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inner = Cq.Solid.makeCylinder(
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radius=BOLT_BEARING.diam_thread/2,
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height=self.bearing_disk_gap
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)
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return outer - inner
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@property
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def bearing_spindle_height(self) -> float:
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h = self.bearing_disk_gap + 2 * self.bearing_disk_thickness
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return h * 2
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@target(name="bearing-spindle")
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def bearing_spindle(self) -> Cq.Solid:
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r1 = self.bearing_gap / 2
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r2 = self.bearing_spindle_max_diam
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h = self.bearing_disk_gap + 2 * self.bearing_disk_thickness
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cone1 = Cq.Solid.makeCylinder(
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radius=r1,
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height=h/2,
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)
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cone2 = Cq.Solid.makeCone(
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radius1=r1,
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radius2=r2,
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height=h/2,
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)
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hole = Cq.Solid.makeCylinder(
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radius=(BOLT_BEARING.diam_thread + 1)/2,
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height=h*2
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).moved(0, 0, -h)
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top = (cone1 + cone2.moved(0, 0, h/2)) - hole
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return top + top.rotate((0,0,0),(1,0,0),180)
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def barrel(self) -> Cq.Compound:
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"""
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One gun barrel
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"""
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outer = Cq.Solid.makeCylinder(
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radius=self.barrel_diam/2,
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height=self.barrel_length,
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)
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inner = Cq.Solid.makeCylinder(
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radius=self.barrel_diam/2-self.barrel_wall_thickness,
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height=self.barrel_length
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)
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return outer - inner
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@assembly()
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def assembly_machine(self) -> Cq.Assembly:
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"""
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The assembly with gun barrels
|
|
"""
|
|
z_lower = -self.bearing_disk_gap/2 - self.bearing_disk_thickness
|
|
gasket_h = self.bearing_spindle_height / 2
|
|
a = (
|
|
Cq.Assembly()
|
|
.addS(
|
|
self.bearing_stator(),
|
|
name="stator1",
|
|
material=self.material_bearing,
|
|
role=Role.STATOR,
|
|
loc=Cq.Location(0, 0, self.bearing_disk_gap/2)
|
|
)
|
|
.addS(
|
|
self.bearing_rotor(),
|
|
name="rotor1",
|
|
material=self.material_bearing,
|
|
role=Role.ROTOR,
|
|
loc=Cq.Location(0, 0, self.bearing_disk_gap/2)
|
|
)
|
|
.addS(
|
|
self.bearing_stator(),
|
|
name="stator2",
|
|
material=self.material_bearing,
|
|
role=Role.STATOR,
|
|
loc=Cq.Location(0, 0, z_lower)
|
|
)
|
|
.addS(
|
|
self.bearing_rotor(),
|
|
name="rotor2",
|
|
material=self.material_bearing,
|
|
role=Role.ROTOR,
|
|
loc=Cq.Location(0, 0, z_lower)
|
|
)
|
|
.addS(
|
|
self.bearing_gasket(),
|
|
name="gasket_bot",
|
|
material=self.material_bearing,
|
|
role=Role.ROTOR,
|
|
loc=Cq.Location(0, 0, -gasket_h-self.bearing_disk_thickness)
|
|
)
|
|
.addS(
|
|
self.bearing_gasket(),
|
|
name="gasket_top",
|
|
material=self.material_bearing,
|
|
role=Role.ROTOR,
|
|
loc=Cq.Location(0, 0, gasket_h)
|
|
)
|
|
)
|
|
z = -self.bearing_disk_gap/2
|
|
for i in range(self.n_side):
|
|
loc_barrel = Cq.Location.rot2d((i+1/2) * 360/self.n_side) * \
|
|
Cq.Location(self.rotation_radius, 0, -self.barrel_length/2)
|
|
a = a.addS(
|
|
self.barrel(),
|
|
name=f"barrel{i}",
|
|
material=self.material_barrel,
|
|
role=Role.DECORATION,
|
|
loc=loc_barrel,
|
|
)
|
|
loc = Cq.Location.rot2d(i * 360/self.n_side) * Cq.Location(self.rotor_bind_radius, 0, z)
|
|
#a = a.addS(
|
|
# self.stator_spacer(),
|
|
# name=f"spacerRotor{i}",
|
|
# material=self.material_spacer,
|
|
# role=Role.STRUCTURE,
|
|
# loc=loc
|
|
#)
|
|
loc = Cq.Location.rot2d((i+0.5) * 360/self.n_side) * Cq.Location(self.angle_joint_bind_radius, 0, z)
|
|
#a = a.addS(
|
|
# self.rotor_spacer(),
|
|
# name=f"spacerStator{i}",
|
|
# material=self.material_spacer,
|
|
# role=Role.STRUCTURE,
|
|
# loc=loc
|
|
#)
|
|
for i in range(self.n_bearing_balls):
|
|
ball = self.bearing_spindle()
|
|
loc = Cq.Location.rot2d(i * 360/self.n_bearing_balls) * Cq.Location(self.bearing_track_radius, 0, 0)
|
|
a = a.addS(
|
|
ball,
|
|
name=f"bearing_spindle{i}",
|
|
material=self.material_bearing_ball,
|
|
role=Role.BEARING,
|
|
loc=loc,
|
|
)
|
|
return a
|
|
|
|
|
|
def profile_side_panel(
|
|
self,
|
|
length: float,
|
|
hasFrontHole: bool = False,
|
|
hasBackHole: bool = True) -> Cq.Sketch:
|
|
assert hasFrontHole or hasBackHole
|
|
signs = ([1] if hasFrontHole else []) + ([-1] if hasBackHole else [])
|
|
return (
|
|
Cq.Sketch()
|
|
.rect(self.side_width, length)
|
|
.push([
|
|
(sx * x, sy * (length/2 - y))
|
|
for (x, y) in self.angle_joint_bolt_position
|
|
for sx in [1, -1]
|
|
for sy in signs
|
|
])
|
|
.circle(self.angle_joint_bolt_diam/2, mode="s")
|
|
)
|
|
|
|
def side_panel(
|
|
self,
|
|
length: float,
|
|
hasFrontHole: bool = True,
|
|
hasBackHole: bool = True,
|
|
) -> Cq.Workplane:
|
|
w = self.side_width
|
|
sketch = self.profile_side_panel(
|
|
length=length,
|
|
hasFrontHole=hasFrontHole,
|
|
hasBackHole=hasBackHole,
|
|
)
|
|
result = (
|
|
Cq.Workplane()
|
|
.placeSketch(sketch)
|
|
.extrude(self.side_thickness)
|
|
)
|
|
# Bevel the edges
|
|
intersector = (
|
|
Cq.Workplane('XZ')
|
|
.polyline([
|
|
(-w/2, 0),
|
|
(w/2, 0),
|
|
(0, self.bulk_radius),
|
|
])
|
|
.close()
|
|
.extrude(length)
|
|
.translate(Cq.Vector(0, length/2, 0))
|
|
)
|
|
# Intersect the side panel
|
|
result = result * intersector
|
|
|
|
# Mark all attachment points
|
|
t = self.side_thickness
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
px = x
|
|
py = length / 2 - y
|
|
result.tagAbsolute(f"holeFPI{i}", (+px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFSI{i}", (-px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFPO{i}", (+px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeFSO{i}", (-px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBPI{i}", (+px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBSI{i}", (-px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBPO{i}", (+px, -py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBSO{i}", (-px, -py, 0), direction="-Z")
|
|
|
|
return result
|
|
|
|
@target(name="side-panel1", kind=TargetKind.DXF)
|
|
def profile_side_panel1(self) -> Cq.Sketch:
|
|
return (
|
|
self.profile_side_panel(
|
|
length=self.side_length1,
|
|
hasFrontHole=False,
|
|
hasBackHole=True,
|
|
)
|
|
.push([
|
|
(0, self.side_length1/2 - self.section1_gohei_loc)
|
|
])
|
|
.circle(self.gohei_bolt_diam/2, mode="s")
|
|
)
|
|
def side_panel1(self) -> Cq.Workplane:
|
|
l = self.side_length1
|
|
w = self.side_width
|
|
sketch = self.profile_side_panel1()
|
|
result = (
|
|
Cq.Workplane()
|
|
.placeSketch(sketch)
|
|
.extrude(self.side_thickness)
|
|
)
|
|
# Bevel the edges
|
|
intersector = (
|
|
Cq.Workplane('XZ')
|
|
.polyline([
|
|
(-w/2, 0),
|
|
(w/2, 0),
|
|
(0, self.bulk_radius),
|
|
])
|
|
.close()
|
|
.extrude(l)
|
|
.translate(Cq.Vector(0, l/2, 0))
|
|
)
|
|
# Intersect the side panel
|
|
result = result * intersector
|
|
|
|
# Mark all attachment points
|
|
t = self.side_thickness
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
px = x
|
|
py = l / 2 - y
|
|
result.tagAbsolute(f"holeFPI{i}", (+px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFSI{i}", (-px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFPO{i}", (+px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeFSO{i}", (-px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBPI{i}", (+px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBSI{i}", (-px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBPO{i}", (+px, -py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBSO{i}", (-px, -py, 0), direction="-Z")
|
|
|
|
return result
|
|
@target(name="side-panel2", kind=TargetKind.DXF)
|
|
def profile_side_panel2(self) -> Cq.Sketch:
|
|
return (
|
|
self.profile_side_panel(
|
|
length=self.side_length2,
|
|
hasFrontHole=True,
|
|
hasBackHole=True,
|
|
)
|
|
)
|
|
@target(name="side-panel3", kind=TargetKind.DXF)
|
|
def profile_side_panel3(self) -> Cq.Sketch:
|
|
return (
|
|
self.profile_side_panel(
|
|
length=self.side_length3,
|
|
hasFrontHole=True,
|
|
hasBackHole=True,
|
|
)
|
|
)
|
|
|
|
def assembly_section1(self) -> Cq.Assembly:
|
|
a = Cq.Assembly()
|
|
side = self.side_panel1()
|
|
r = self.bulk_radius
|
|
for i in range(self.n_side):
|
|
a = a.addS(
|
|
side,
|
|
name=f"side{i}",
|
|
material=self.material_side,
|
|
role=Role.STRUCTURE | Role.DECORATION,
|
|
loc=Cq.Location.rot2d(i*360/self.n_side) * Cq.Location(-r,0,0,90,0,90),
|
|
)
|
|
return a
|
|
def assembly_section(self, **kwargs) -> Cq.Assembly:
|
|
a = Cq.Assembly()
|
|
side = self.side_panel(**kwargs)
|
|
r = self.bulk_radius
|
|
for i in range(self.n_side):
|
|
a = a.addS(
|
|
side,
|
|
name=f"side{i}",
|
|
material=self.material_side,
|
|
role=Role.STRUCTURE | Role.DECORATION,
|
|
loc=Cq.Location.rot2d(i*360/self.n_side) * Cq.Location(-r,0,0,90,0,90),
|
|
)
|
|
return a
|
|
|
|
@target(name="chamber-side-panel", kind=TargetKind.DXF)
|
|
def profile_chamber_side_panel(self) -> Cq.Sketch:
|
|
l = self.chamber_side_length
|
|
w = self.chamber_side_width
|
|
return (
|
|
Cq.Sketch()
|
|
.rect(w, l)
|
|
.push([
|
|
(sx * x, sy * (l/2 - y))
|
|
for (x, y) in self.angle_joint_bolt_position
|
|
for sx in [1, -1]
|
|
for sy in [1, -1]
|
|
])
|
|
.circle(self.angle_joint_bolt_diam/2, mode="s")
|
|
)
|
|
|
|
def chamber_side_panel(self) -> Cq.Workplane:
|
|
w = self.chamber_side_width
|
|
l = self.chamber_side_length
|
|
sketch = self.profile_chamber_side_panel()
|
|
result = (
|
|
Cq.Workplane()
|
|
.placeSketch(sketch)
|
|
.extrude(self.side_thickness)
|
|
)
|
|
# Bevel the edges
|
|
intersector = (
|
|
Cq.Workplane('XZ')
|
|
.polyline([
|
|
(-w/2, 0),
|
|
(w/2, 0),
|
|
(0, self.chamber_bulk_radius),
|
|
])
|
|
.close()
|
|
.extrude(l)
|
|
.translate(Cq.Vector(0, l/2, 0))
|
|
)
|
|
# Intersect the side panel
|
|
result = result * intersector
|
|
|
|
# Mark all attachment points
|
|
t = self.side_thickness
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
px = x
|
|
py = l / 2 - y
|
|
result.tagAbsolute(f"holeFPI{i}", (+px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFSI{i}", (-px, py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeFPO{i}", (+px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeFSO{i}", (-px, py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBPI{i}", (+px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBSI{i}", (-px, -py, t), direction="+Z")
|
|
result.tagAbsolute(f"holeBPO{i}", (+px, -py, 0), direction="-Z")
|
|
result.tagAbsolute(f"holeBSO{i}", (-px, -py, 0), direction="-Z")
|
|
|
|
return result
|
|
|
|
@target(name="chamber-back", kind=TargetKind.DXF)
|
|
def profile_chamber_back(self) -> Cq.Sketch:
|
|
return (
|
|
Cq.Sketch()
|
|
.regularPolygon(self.side_width - self.side_thickness, self.n_side)
|
|
.reset()
|
|
.regularPolygon(
|
|
self.angle_joint_bind_radius, self.n_side,
|
|
mode="c", tag="bolt")
|
|
.vertices(tag="bolt")
|
|
.circle(self.rotor_bind_bolt_diam/2, mode="s")
|
|
)
|
|
def chamber_back(self) -> Cq.Workplane:
|
|
sketch = self.profile_chamber_back()
|
|
result = (
|
|
Cq.Workplane()
|
|
.placeSketch(sketch)
|
|
.extrude(self.side_thickness)
|
|
)
|
|
# Mark all attachment points
|
|
for i in range(self.n_side):
|
|
angle = (i+0.5) * math.radians(360 / self.n_side)
|
|
x = self.angle_joint_bind_radius * math.cos(angle)
|
|
y = self.angle_joint_bind_radius * math.sin(angle)
|
|
result.tagAbsolute(f"holeF{i}", (x, y, self.side_thickness), direction="+Z")
|
|
result.tagAbsolute(f"holeB{i}", (x, -y, 0), direction="-Z")
|
|
return result
|
|
|
|
def assembly_chamber(self) -> Cq.Assembly:
|
|
a = Cq.Assembly()
|
|
side = self.chamber_side_panel()
|
|
r = self.chamber_bulk_radius
|
|
for i in range(self.n_side):
|
|
a = a.addS(
|
|
side,
|
|
name=f"side{i}",
|
|
material=self.material_side,
|
|
role=Role.STRUCTURE | Role.DECORATION,
|
|
loc=Cq.Location.rot2d(i*360/self.n_side) * Cq.Location(-r,0,0,90,0,90),
|
|
)
|
|
return a
|
|
|
|
def angle_joint_flange(self) -> Cq.Workplane:
|
|
th = math.pi / self.n_side
|
|
r = self.bulk_radius
|
|
flange = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.push([
|
|
(r, r * math.tan(th))
|
|
])
|
|
.circle(self.angle_joint_flange_radius)
|
|
.reset()
|
|
.regularPolygon(self.side_width_inner, self.n_side, mode="i")
|
|
.finalize()
|
|
.extrude(self.angle_joint_flange_thickness)
|
|
.translate((0, 0, -self.angle_joint_flange_thickness/2))
|
|
)
|
|
ri = self.angle_joint_bind_radius
|
|
h = self.angle_joint_flange_thickness
|
|
# drill hole
|
|
cyl = Cq.Solid.makeCylinder(
|
|
radius=self.rotor_bind_bolt_diam/2,
|
|
height=h,
|
|
pnt=(ri * math.cos(th), ri * math.sin(th), -h/2),
|
|
)
|
|
return flange - cyl
|
|
|
|
@target(name="angle-joint-chamber-back")
|
|
def angle_joint_chamber_back(self) -> Cq.Workplane:
|
|
slot = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.side_width,
|
|
self.n_side
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
)
|
|
thickness = self.chamber_bulk_radius - self.bulk_radius
|
|
|
|
h = (self.bulk_radius + self.angle_joint_extra_width) * 2
|
|
# Intersector for 1/n of the ring
|
|
intersector = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(0, 0),
|
|
(h, 0),
|
|
(h, h * math.tan(2 * math.pi / self.n_side))
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth*4)
|
|
.translate((0, 0, -self.angle_joint_depth*2))
|
|
)
|
|
# The mating structure
|
|
z1 = self.bulk_radius + (thickness - self.angle_joint_conn_thickness) / 2
|
|
z2 = z1 + self.angle_joint_conn_thickness
|
|
mating1n = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(z1, 0),
|
|
(z1, self.angle_joint_conn_width),
|
|
(z2, self.angle_joint_conn_width),
|
|
(z2, 0),
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_conn_depth)
|
|
)
|
|
mating1p = mating1n.rotate((0,0,0), (1,0,0), 180)
|
|
angle = 360 / self.n_side
|
|
|
|
chamber_intersector = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(self.chamber_side_width, self.n_side)
|
|
.regularPolygon(self.chamber_side_width - self.delta_side_width, self.n_side, mode="s")
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
.translate((0,0,self.angle_joint_gap/2))
|
|
)
|
|
result = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.chamber_side_width,
|
|
self.n_side
|
|
)
|
|
.regularPolygon(
|
|
self.side_width_inner,
|
|
self.n_side, mode="s"
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
.translate((0, 0, -self.angle_joint_depth/2))
|
|
.cut(slot.translate((0, 0, self.angle_joint_gap/2)))
|
|
.intersect(intersector)
|
|
.cut(chamber_intersector)
|
|
.cut(mating1n)
|
|
.union(mating1p)
|
|
.union(mating1n.rotate((0,0,0),(0,0,1),angle))
|
|
.cut(mating1p.rotate((0,0,0),(0,0,1),angle))
|
|
)
|
|
h = self.chamber_bulk_radius
|
|
hole_negative = Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_diam/2,
|
|
height=h,
|
|
pnt=(0,0,0),
|
|
dir=(1,0,0),
|
|
) + Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_head_diam/2,
|
|
height=self.angle_joint_bolt_head_depth,
|
|
pnt=(h,0,0),
|
|
dir=(-1,0,0),
|
|
)
|
|
dy = self.angle_joint_gap / 2
|
|
locrot = Cq.Location(0, 0, 0, 0, 0, 360/self.n_side)
|
|
for (x, y) in self.angle_joint_bolt_position:
|
|
p1 = Cq.Location((0, x, dy+y))
|
|
p1r = locrot * Cq.Location((0, -x, dy+y))
|
|
result = result \
|
|
- hole_negative.moved(p1) \
|
|
- hole_negative.moved(p1r)
|
|
# Mark the absolute locations of the mount points
|
|
dr = self.chamber_bulk_radius - self.side_thickness
|
|
locrot = Cq.Location(0, 0, 0, 0, 0, 360/self.n_side)
|
|
dr = self.chamber_bulk_radius - self.side_thickness
|
|
dy = self.angle_joint_gap / 2
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
py = dy + y
|
|
#result.tagAbsolute(f"holeLPO{i}", (dr, x, py), direction="+X")
|
|
result.tagAbsolute(f"holeLPO{i}", (dr, x, py), direction="+X")
|
|
#result.tagAbsolute(f"holeLSO{i}", locrot * Cq.Location(dr, -x, py), direction="+X")
|
|
result.tagAbsolute(f"holeLSO{i}", locrot * Cq.Location(dr, -x, py), direction="+X")
|
|
|
|
th = math.pi / self.n_side
|
|
r = self.bulk_radius
|
|
flange_z = self.angle_joint_depth / 2 - self.side_thickness
|
|
flange = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.push([
|
|
(r, r * math.tan(th))
|
|
])
|
|
.circle(self.angle_joint_flange_extension)
|
|
.reset()
|
|
.regularPolygon(self.side_width_inner, self.n_side, mode="i")
|
|
.finalize()
|
|
.extrude(self.angle_joint_gap)
|
|
.translate((0, 0, -flange_z))
|
|
)
|
|
ri = self.angle_joint_bind_radius
|
|
h = self.angle_joint_gap
|
|
# Drill holes for connectors
|
|
cyl = Cq.Solid.makeCylinder(
|
|
radius=self.rotor_bind_bolt_diam/2,
|
|
height=h,
|
|
pnt=(0, 0, -flange_z),
|
|
)
|
|
result = (
|
|
result
|
|
+ flange
|
|
- cyl.moved(ri * math.cos(th), ri * math.sin(th), 0)
|
|
)
|
|
result.tagAbsolute("holeStatorO", (ri * math.cos(th), ri * math.sin(th), -flange_z), direction="-Z")
|
|
result.tagAbsolute("holeStatorI", (ri * math.cos(th), ri * math.sin(th), -flange_z+h), direction="+Z")
|
|
return result
|
|
|
|
|
|
@target(name="angle-joint-chamber-front")
|
|
def angle_joint_chamber_front(self) -> Cq.Workplane:
|
|
"""
|
|
Angle joint for connecting the chamber to the chassis of the barrel
|
|
"""
|
|
# This slot cuts the interior of the joint
|
|
slot = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.side_width,
|
|
self.n_side
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
)
|
|
thickness = self.chamber_bulk_radius - self.bulk_radius
|
|
|
|
h = (self.bulk_radius + self.angle_joint_extra_width) * 2
|
|
# Intersector for 1/n of the ring
|
|
intersector = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(0, 0),
|
|
(h, 0),
|
|
(h, h * math.tan(2 * math.pi / self.n_side))
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth*4)
|
|
.translate((0, 0, -self.angle_joint_depth*2))
|
|
)
|
|
# The mating structure
|
|
z1 = self.bulk_radius + (thickness - self.angle_joint_conn_thickness) / 2
|
|
z2 = z1 + self.angle_joint_conn_thickness
|
|
mating1n = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(z1, 0),
|
|
(z1, self.angle_joint_conn_width),
|
|
(z2, self.angle_joint_conn_width),
|
|
(z2, 0),
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_conn_depth)
|
|
)
|
|
mating1p = mating1n.rotate((0,0,0), (1,0,0), 180)
|
|
angle = 360 / self.n_side
|
|
|
|
chamber_intersector = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(self.chamber_side_width, self.n_side)
|
|
.regularPolygon(self.chamber_side_width - self.delta_side_width, self.n_side, mode="s")
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
.translate((0,0,-self.angle_joint_depth-self.angle_joint_gap/2))
|
|
)
|
|
result = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.chamber_side_width,
|
|
self.n_side
|
|
)
|
|
.regularPolygon(
|
|
self.side_width_inner,
|
|
self.n_side, mode="s"
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
.translate((0, 0, -self.angle_joint_depth/2))
|
|
.cut(slot.translate((0, 0, self.angle_joint_gap/2)))
|
|
.cut(slot.translate((0, 0, -self.angle_joint_depth-self.angle_joint_gap/2)))
|
|
.intersect(intersector)
|
|
.cut(chamber_intersector)
|
|
.cut(mating1n)
|
|
.union(mating1p)
|
|
.union(mating1n.rotate((0,0,0),(0,0,1),angle))
|
|
.cut(mating1p.rotate((0,0,0),(0,0,1),angle))
|
|
)
|
|
h = self.chamber_bulk_radius
|
|
hole_negative = Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_diam/2,
|
|
height=h,
|
|
pnt=(0,0,0),
|
|
dir=(1,0,0),
|
|
) + Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_head_diam/2,
|
|
height=self.angle_joint_bolt_head_depth,
|
|
pnt=(h,0,0),
|
|
dir=(-1,0,0),
|
|
)
|
|
dy = self.angle_joint_gap / 2
|
|
locrot = Cq.Location(0, 0, 0, 0, 0, 360/self.n_side)
|
|
for (x, y) in self.angle_joint_bolt_position:
|
|
p1 = Cq.Location((0, x, dy+y))
|
|
p2 = Cq.Location((0, x, -dy-y))
|
|
p1r = locrot * Cq.Location((0, -x, dy+y))
|
|
p2r = locrot * Cq.Location((0, -x, -dy-y))
|
|
result = result \
|
|
- hole_negative.moved(p1) \
|
|
- hole_negative.moved(p2) \
|
|
- hole_negative.moved(p1r) \
|
|
- hole_negative.moved(p2r)
|
|
# Mark the absolute locations of the mount points
|
|
dr = self.bulk_radius + self.angle_joint_thickness
|
|
dr0 = self.bulk_radius
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
py = dy + y
|
|
result.tagAbsolute(f"holeLPO{i}", (dr, x, py), direction="+X")
|
|
result.tagAbsolute(f"holeLPM{i}", (dr0, x, py), direction="-X")
|
|
result.tagAbsolute(f"holeRPM{i}", (dr0, x, -py), direction="-X")
|
|
result.tagAbsolute(f"holeLSO{i}", locrot * Cq.Location(dr, -x, py), direction="+X")
|
|
result.tagAbsolute(f"holeLSM{i}", locrot * Cq.Location(dr0, -x, py), direction="-X")
|
|
result.tagAbsolute(f"holeRSM{i}", locrot * Cq.Location(dr0, -x, -py), direction="-X")
|
|
locrot = Cq.Location(0, 0, 0, 0, 0, 360/self.n_side)
|
|
dr = self.chamber_bulk_radius - self.side_thickness
|
|
dy = self.angle_joint_gap / 2
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
py = dy + y
|
|
#result.tagAbsolute(f"holeLPO{i}", (dr, x, py), direction="+X")
|
|
result.tagAbsolute(f"holeRPO{i}", (dr, x, -py), direction="+X")
|
|
#result.tagAbsolute(f"holeLSO{i}", locrot * Cq.Location(dr, -x, py), direction="+X")
|
|
result.tagAbsolute(f"holeRSO{i}", locrot * Cq.Location(dr, -x, -py), direction="+X")
|
|
|
|
# Generate the flange geometry
|
|
flange = self.angle_joint_flange()
|
|
result = result + self.angle_joint_flange()
|
|
th = math.pi / self.n_side
|
|
ri = self.angle_joint_bind_radius
|
|
h = self.angle_joint_gap
|
|
result.tagAbsolute("holeStatorL", (ri * math.cos(th), ri * math.sin(th), h/2), direction="+Z")
|
|
result.tagAbsolute("holeStatorR", (ri * math.cos(th), ri * math.sin(th), -h/2), direction="-Z")
|
|
return result
|
|
|
|
@target(name="angle-joint")
|
|
def angle_joint(self) -> Cq.Workplane:
|
|
"""
|
|
Angular joint between two side panels (excluding chamber). This sits at the intersection of
|
|
4 side panels to provide compressive, shear, and tensile strength.
|
|
|
|
To provide tensile strength along the Z-axis, the panels must be bolted
|
|
onto the angle joint.
|
|
|
|
The holes are marked hole(L/R)(P/S)(O/I)(i), where L/R corresponds to the two
|
|
sections being joined, and P/S corresponds to the two facets
|
|
(primary/secondary) being joined. O/I corresponds to the outside/inside
|
|
"""
|
|
|
|
# This slot cuts the interior of the joint
|
|
slot = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.side_width,
|
|
self.n_side
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
)
|
|
|
|
h = (self.bulk_radius + self.angle_joint_extra_width) * 2
|
|
# Intersector for 1/n of the ring
|
|
intersector = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(0, 0),
|
|
(h, 0),
|
|
(h, h * math.tan(2 * math.pi / self.n_side))
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth*4)
|
|
.translate((0, 0, -self.angle_joint_depth*2))
|
|
)
|
|
# The mating structure
|
|
z1 = self.bulk_radius + (self.angle_joint_thickness - self.angle_joint_conn_thickness) / 2
|
|
z2 = z1 + self.angle_joint_conn_thickness
|
|
mating1n = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.polygon([
|
|
(z1, 0),
|
|
(z1, self.angle_joint_conn_width),
|
|
(z2, self.angle_joint_conn_width),
|
|
(z2, 0),
|
|
])
|
|
.finalize()
|
|
.extrude(self.angle_joint_conn_depth)
|
|
)
|
|
mating1p = mating1n.rotate((0,0,0), (1,0,0), 180)
|
|
angle = 360 / self.n_side
|
|
result = (
|
|
Cq.Workplane()
|
|
.sketch()
|
|
.regularPolygon(
|
|
self.side_width + self.angle_joint_extra_width,
|
|
self.n_side
|
|
)
|
|
.regularPolygon(
|
|
self.side_width_inner,
|
|
self.n_side, mode="s"
|
|
)
|
|
.finalize()
|
|
.extrude(self.angle_joint_depth)
|
|
.translate((0, 0, -self.angle_joint_depth/2))
|
|
.cut(slot.translate((0, 0, self.angle_joint_gap/2)))
|
|
.cut(slot.translate((0, 0, -self.angle_joint_depth-self.angle_joint_gap/2)))
|
|
.intersect(intersector)
|
|
.cut(mating1n)
|
|
.union(mating1p)
|
|
.union(mating1n.rotate((0,0,0),(0,0,1),angle))
|
|
.cut(mating1p.rotate((0,0,0),(0,0,1),angle))
|
|
)
|
|
h = self.bulk_radius + self.angle_joint_thickness
|
|
hole_negative = Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_diam/2,
|
|
height=h,
|
|
pnt=(0,0,0),
|
|
dir=(1,0,0),
|
|
) + Cq.Solid.makeCylinder(
|
|
radius=self.angle_joint_bolt_head_diam/2,
|
|
height=self.angle_joint_bolt_head_depth,
|
|
pnt=(h,0,0),
|
|
dir=(-1,0,0),
|
|
)
|
|
dy = self.angle_joint_gap / 2
|
|
locrot = Cq.Location(0, 0, 0, 0, 0, 360/self.n_side)
|
|
for (x, y) in self.angle_joint_bolt_position:
|
|
p1 = Cq.Location((0, x, dy+y))
|
|
p2 = Cq.Location((0, x, -dy-y))
|
|
p1r = locrot * Cq.Location((0, -x, dy+y))
|
|
p2r = locrot * Cq.Location((0, -x, -dy-y))
|
|
result = result \
|
|
- hole_negative.moved(p1) \
|
|
- hole_negative.moved(p2) \
|
|
- hole_negative.moved(p1r) \
|
|
- hole_negative.moved(p2r)
|
|
# Mark the absolute locations of the mount points
|
|
dr = self.bulk_radius + self.angle_joint_thickness
|
|
dr0 = self.bulk_radius
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
py = dy + y
|
|
result.tagAbsolute(f"holeLPO{i}", (dr, x, py), direction="+X")
|
|
result.tagAbsolute(f"holeRPO{i}", (dr, x, -py), direction="+X")
|
|
result.tagAbsolute(f"holeLPM{i}", (dr0, x, py), direction="-X")
|
|
result.tagAbsolute(f"holeRPM{i}", (dr0, x, -py), direction="-X")
|
|
result.tagAbsolute(f"holeLSO{i}", locrot * Cq.Location(dr, -x, py), direction="+X")
|
|
result.tagAbsolute(f"holeRSO{i}", locrot * Cq.Location(dr, -x, -py), direction="+X")
|
|
result.tagAbsolute(f"holeLSM{i}", locrot * Cq.Location(dr0, -x, py), direction="-X")
|
|
result.tagAbsolute(f"holeRSM{i}", locrot * Cq.Location(dr0, -x, -py), direction="-X")
|
|
|
|
# Generate the flange geometry
|
|
flange = self.angle_joint_flange()
|
|
result = result + self.angle_joint_flange()
|
|
th = math.pi / self.n_side
|
|
ri = self.angle_joint_bind_radius
|
|
h = self.angle_joint_gap
|
|
result.tagAbsolute("holeStatorL", (ri * math.cos(th), ri * math.sin(th), h/2), direction="+Z")
|
|
result.tagAbsolute("holeStatorR", (ri * math.cos(th), ri * math.sin(th), -h/2), direction="-Z")
|
|
return result
|
|
|
|
@assembly()
|
|
def assembly_ring(self, base) -> Cq.Assembly:
|
|
a = Cq.Assembly()
|
|
r = self.bulk_radius
|
|
for i in range(self.n_side):
|
|
a = a.addS(
|
|
base,
|
|
name=f"side{i}",
|
|
material=self.material_brace,
|
|
role=Role.CASING | Role.DECORATION,
|
|
loc=Cq.Location.rot2d(i*360/self.n_side),
|
|
)
|
|
return a
|
|
|
|
@target(name="handle")
|
|
def handle(self) -> Cq.Workplane:
|
|
w = self.side_width + self.angle_joint_extra_width
|
|
base = (
|
|
Cq.Workplane(
|
|
origin=(0, 0, -self.handle_base_height)
|
|
)
|
|
.box(
|
|
length=w,
|
|
width=self.angle_joint_depth,
|
|
height=self.handle_base_height,
|
|
centered=(True, True, False)
|
|
)
|
|
.faces(">Z")
|
|
.workplane()
|
|
.pushPoints([
|
|
(x * sx, y * sy)
|
|
for (x, y) in self.angle_joint_bolt_position
|
|
for sx in (-1, 1)
|
|
for sy in (-1, 1)
|
|
])
|
|
.cboreHole(
|
|
self.angle_joint_bolt_diam,
|
|
self.angle_joint_bolt_head_diam,
|
|
self.angle_joint_bolt_head_depth,
|
|
depth=None,
|
|
)
|
|
)
|
|
dx = self.handle_length / 2 - self.handle_thickness / 2
|
|
assert self.handle_length < w
|
|
z = self.handle_height - self.handle_thickness / 2
|
|
handle = Cq.Solid.makeCylinder(
|
|
radius=self.handle_thickness/2,
|
|
height=dx * 2,
|
|
pnt=(-dx, 0, z),
|
|
dir=(1, 0, 0),
|
|
)
|
|
pillar = Cq.Solid.makeCylinder(
|
|
radius=self.handle_thickness/2,
|
|
height=z,
|
|
)
|
|
joint = Cq.Solid.makeSphere(radius=self.handle_thickness/2)
|
|
result = (
|
|
base +
|
|
handle +
|
|
pillar.moved(dx, 0, 0) +
|
|
pillar.moved(-dx, 0, 0) +
|
|
joint.moved(dx, 0, z) +
|
|
joint.moved(-dx, 0, z)
|
|
)
|
|
t = self.handle_base_height
|
|
for i, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
result.tagAbsolute(f"holeLPO{i}", (+x, y, 0), direction="+Z")
|
|
result.tagAbsolute(f"holeLSO{i}", (-x, y, 0), direction="+Z")
|
|
result.tagAbsolute(f"holeLPI{i}", (+x, y, -t), direction="-Z")
|
|
result.tagAbsolute(f"holeLSI{i}", (-x, y, -t), direction="-Z")
|
|
result.tagAbsolute(f"holeRPO{i}", (+x, -y, 0), direction="+Z")
|
|
result.tagAbsolute(f"holeRSO{i}", (-x, -y, 0), direction="+Z")
|
|
result.tagAbsolute(f"holeRPI{i}", (+x, -y, -t), direction="-Z")
|
|
result.tagAbsolute(f"holeRSI{i}", (-x, -y, -t), direction="-Z")
|
|
|
|
return result
|
|
@assembly()
|
|
def assembly(self) -> Cq.Assembly:
|
|
a = Cq.Assembly()
|
|
a = (
|
|
a
|
|
.add(
|
|
self.assembly_section1(),
|
|
name="section1",
|
|
)
|
|
.add(
|
|
self.assembly_ring(self.angle_joint()),
|
|
name="ring1",
|
|
)
|
|
.add(
|
|
self.assembly_section(length=self.side_length2, hasFrontHole=True, hasBackHole=True),
|
|
name="section2",
|
|
)
|
|
.add(
|
|
self.assembly_ring(self.angle_joint()),
|
|
name="ring2",
|
|
)
|
|
.add(
|
|
self.assembly_section(length=self.side_length3, hasFrontHole=True, hasBackHole=True),
|
|
name="section3",
|
|
)
|
|
.add(
|
|
self.assembly_ring(self.angle_joint_chamber_front()),
|
|
name="ring3",
|
|
)
|
|
.add(
|
|
self.assembly_chamber(),
|
|
name="chamber",
|
|
)
|
|
.add(
|
|
self.assembly_ring(self.angle_joint_chamber_back()),
|
|
name="ring4",
|
|
)
|
|
.addS(
|
|
self.chamber_back(),
|
|
name="chamber_back",
|
|
material=self.material_side,
|
|
role=Role.STRUCTURE | Role.DECORATION,
|
|
)
|
|
.addS(
|
|
self.handle(),
|
|
name="handle",
|
|
material=self.material_brace,
|
|
role=Role.HANDLE,
|
|
)
|
|
.add(self.assembly_machine(), name="machine")
|
|
)
|
|
# Add handle
|
|
for ih, (x, y) in enumerate(self.angle_joint_bolt_position):
|
|
a = a.constrain(
|
|
f"handle?holeLPI{ih}",
|
|
f"ring2/side0?holeLPO{ih}",
|
|
"Plane",
|
|
)
|
|
a = a.constrain(
|
|
f"handle?holeRPI{ih}",
|
|
f"ring2/side0?holeRPO{ih}",
|
|
"Plane",
|
|
)
|
|
for i in range(self.n_side):
|
|
j = (i + 1) % self.n_side
|
|
ir = (self.n_side - i) % self.n_side
|
|
|
|
coupler_name = f"stator_coupler{i}"
|
|
a = a.addS(
|
|
self.stator_coupler(),
|
|
name=coupler_name,
|
|
material=self.material_brace,
|
|
role=Role.STRUCTURE,
|
|
)
|
|
a = a.constrain(
|
|
f"{coupler_name}?holeOB",
|
|
f"ring1/side{i}?holeStatorL",
|
|
"Plane",
|
|
)
|
|
a = a.constrain(
|
|
f"{coupler_name}?holeIF",
|
|
f"machine/stator2?holeB{ir}",
|
|
"Plane",
|
|
)
|
|
for ih in range(len(self.angle_joint_bolt_position)):
|
|
a = a.constrain(
|
|
f"chamber/side{i}?holeFPI{ih}",
|
|
f"ring3/side{i}?holeRSO{ih}",
|
|
"Plane",
|
|
)
|
|
a = a.constrain(
|
|
f"chamber/side{i}?holeBPI{ih}",
|
|
f"ring4/side{i}?holeLSO{ih}",
|
|
"Plane",
|
|
)
|
|
a = a.constrain(
|
|
f"ring4/side{i}?holeStatorO",
|
|
f"chamber_back?holeB{i}",
|
|
"Plane",
|
|
)
|
|
|
|
#a = a.constrain(
|
|
# f"barrel/stator2?holeB{i}",
|
|
# f"ring1/side{i}?holeStatorR",
|
|
# "Plane",
|
|
#)
|
|
|
|
# Generate bolts for the chamber back
|
|
name_bolt =f"chamber_back{i}boltFPI{ih}"
|
|
a = a.addS(
|
|
BOLT_COMMON.generate(),
|
|
name=name_bolt,
|
|
material=self.material_fastener,
|
|
role=Role.CONNECTION,
|
|
)
|
|
a = a.constrain(
|
|
f"chamber_back?holeF{i}",
|
|
f"{name_bolt}?root",
|
|
"Plane",
|
|
param=0,
|
|
)
|
|
for (nl, nc, nr) in [
|
|
("section1", "ring1", "section2"),
|
|
("section2", "ring2", "section3"),
|
|
("section3", "ring3", None),
|
|
]:
|
|
a = a.constrain(
|
|
f"{nl}/side{i}?holeBSO{ih}",
|
|
f"{nc}/side{i}?holeLPM{ih}",
|
|
"Plane",
|
|
)
|
|
if nr:
|
|
a = a.constrain(
|
|
f"{nr}/side{i}?holeFPO{ih}",
|
|
f"{nc}/side{i}?holeRSM{ih}",
|
|
"Plane",
|
|
)
|
|
|
|
return a.solve()
|