554 lines
18 KiB
OpenSCAD
554 lines
18 KiB
OpenSCAD
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/* [Siren General Parameters] */
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siren_diameter = 125; // Base diameter
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siren_height = 50; // Height of the rotor
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number_of_ports = 5; // Number of ports
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tolerance = 2; // Tolerance between stator and rotor
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pressure_zone = 0.4; // Percentage of diameter
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round_radius = 4; // Rounding of top/bottom
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$fn = $preview ? 32 : 128; // Number of fragments
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/* [Stator Parameters] */
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stator_wall_thickness = 8; // Stator wall thickness
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number_of_mounting_holes = 4; // Number of mounting holes
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screw_diameter = 3.2; // Diameter of screws - M3 clearance hole (3.2mm diameter)
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screw_bore_diameter = 6.5;
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screw_insert_diameter = 4;
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screw_bore_depth = 3;
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screw_length = 10 - (stator_wall_thickness - screw_bore_depth);
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stator_screw_offset = siren_diameter/2 - stator_wall_thickness/2; //distance to screws
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/* [Rotor Parameters] */
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rotor_wall_thickness = 3; // Rotor wall thickness
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hub_height = 5;
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hub_diameter = 12;
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blade_angle = 15;
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port_height = siren_height - (rotor_wall_thickness * 2) - (tolerance * 2); // Height of the port
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/* [Motor Parameters] */
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motor_shaft_diameter = 8; // Diameter of the motor body
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motor_frame_diameter = 60;
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motor_diameter = 28; // Diameter of the motor body
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motor_height = 45;
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magnet_diameter = 7;
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motor_screw_x_offset = 9.5;
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motor_screw_y_offset = 8;
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motor_screw_offset = 8;
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motor_frame_screw_offset = motor_frame_diameter/2 - stator_wall_thickness/2; //distance to screws
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// helper functions
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module ports(diameter, height, ports) {
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radius = diameter / 2;
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angle = 180 / ports;
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rotate([0, 0, 180 / ports])
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for (i = [0:360/ports:360]) {
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rotate([0, 0, i])
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linear_extrude(height)
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polygon(concat(
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[[0, 0]], // Center point
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[for (j = [0 : $fn])
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[radius * cos(angle * j / $fn),
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radius * sin(angle * j / $fn)]]
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));
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}
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}
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module column(outer_diameter, inner_diameter, height) {
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difference(){
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// Outer cylinder
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cylinder(d = outer_diameter, h = height);
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// Subtract inner cylinder
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cylinder(d = inner_diameter, h = height);
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}
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}
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// Linear Interpolation
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function lerp(a, b, t) = a * (1 - t) + b * t;
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// Arc between points function
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function arc_between_points(p1, p2, height, steps=20) =
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[for(t = [0:1/steps:1])
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let(
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x = lerp(p1.x, p2.x, t),
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y = lerp(p1.y, p2.y, t),
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// Parabolic arc height calculation
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arc_height = height * (1 - pow(2*t-1, 2))
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)
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[x, y + arc_height]
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];
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function bezier_curve(t, p0, p1, p2, p3, p4) =
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pow(1-t, 4) * p0 +
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4 * pow(1-t, 3) * t * p1 +
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6 * pow(1-t, 2) * pow(t, 2) * p2 +
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4 * (1-t) * pow(t, 3) * p3 +
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pow(t, 4) * p4;
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function curved_polygon(points, steps, x_shift, y_shift) =
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let(
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left_curve = [for (t = [0 : 1/steps : 1])
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bezier_curve(t, points[0], points[1], points[2], points[3], points[4])
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],
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right_curve = [for (pt = left_curve)
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[pt[0] + x_shift, pt[1] + y_shift]
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]
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)
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concat(left_curve, [for (i = [len(right_curve)-1 : -1 : 0]) right_curve[i]]);
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module stator(diameter, height, p_height, ports) {
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difference() {
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// Create column
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column(diameter, diameter - (stator_wall_thickness * 2), height);
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// Subtract ports
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translate([0, 0, (height - p_height) / 2])
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ports(diameter, p_height, number_of_ports);
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// 4 M3 mounting holes
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for (i = [0:360/number_of_mounting_holes:360]) {
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// Top
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, -1])
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cylinder(d = screw_insert_diameter, h = screw_length + 1);
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// Bottom
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, height - screw_length]) // Adjust position as needed
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cylinder(d = screw_insert_diameter, h = screw_length + 1);
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}
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}
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}
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module impeller_blades_straight(rotor_inner_diameter, rotor_height) {
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difference() {
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intersection() {
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// Column with full diameter
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cylinder(d = rotor_inner_diameter, h = rotor_height);
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// Blades
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union() {
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for (i = [0:360/number_of_ports:360]) {
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rotate([0, 0, i - 90])
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translate([0, rotor_inner_diameter / 2, 0])
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rotate([0, 0, blade_angle])
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translate([-rotor_wall_thickness, -(rotor_inner_diameter / 2), 0])
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linear_extrude(height = rotor_height, twist = 0, slices=360)
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square([rotor_wall_thickness, diameter]);
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}
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}
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}
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// Subtract core cylinder
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translate([0, 0, -1])
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cylinder(d = diameter * pressure_zone, h = height + 10);
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}
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}
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module impeller_blade(radius, rotor_height){
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// Generate points
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points1 = arc_between_points([0, -hub_diameter / 2], [radius, 0], -blade_angle);
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points2 = [for(p = [len(points1)-1:-1:0]) points1[p] - [0, -rotor_wall_thickness]];
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// Create the blade by combining top and bottom points
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linear_extrude(height = rotor_height)
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polygon(concat(
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points1,
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points2
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));
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}
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module impeller_blades_curved(radius, rotor_height){
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difference() {
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union() {
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// Rotate and create blades
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for (i = [0:360/number_of_ports:360]) {
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rotate([0, 0, i])
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impeller_blade(radius, rotor_height);
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}
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}
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// Subtract core cylinder
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/*
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rounding_radius = 25;
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translate([0, 0, rotor_wall_thickness + rounding_radius])
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minkowski() {
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// Original cylinder, reduced by twice the rounding radius
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cylinder(
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d = diameter * pressure_zone - (2 * rounding_radius),
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h = 1000
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);
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// Sphere for rounding
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sphere(r = rounding_radius);
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}
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*/
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top_rounding_radius = 5;
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bottom_rounding_radius = rotor_height / 2 - 1;
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translate([0, 0, rotor_height - top_rounding_radius - 0])
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union(){
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difference() {
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// Column with diameter = 2 * top_rounding_radius
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cylinder(d = (diameter * pressure_zone) + (top_rounding_radius * 2), h = top_rounding_radius + 10);
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// Top torus
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rotate_extrude()
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translate([((diameter * pressure_zone) + (top_rounding_radius * 2)) / 2, 0, 0])
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circle(r = top_rounding_radius);
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}
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rotate([180, 0, 0])
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minkowski() {
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// Original cylinder, reduced by twice the rounding radius
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cylinder(
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d = (diameter * pressure_zone) - (2 * bottom_rounding_radius),
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h = rotor_height - bottom_rounding_radius - (top_rounding_radius * 2) + 2
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);
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// Sphere for rounding
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sphere(r = bottom_rounding_radius);
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}
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}
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}
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}
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module rotor() {
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rotor_diameter = diameter - (stator_wall_thickness * 2) - (tolerance * 2);
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rotor_height = height - (tolerance * 2);
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rotor_inner_diameter = rotor_diameter - (rotor_wall_thickness * 2);
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difference() {
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union(){
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difference() {
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// Outer cylinder
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cylinder(d = rotor_diameter, h = rotor_height);
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// Subtract inner cylinder
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translate([0, 0, rotor_wall_thickness])
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cylinder(d = rotor_inner_diameter, h = rotor_height + 2);
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// Subtract ports
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translate([0, 0, -tolerance])
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ports();
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}
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/*
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// Central column for hub added after subtraction
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translate([0, 0, rotor_wall_thickness])
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cylinder(d = hub_diameter, h = hub_height);
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*/
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// Add blades
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impeller_blades_curved(rotor_inner_diameter / 2, rotor_height);
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}
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translate([0, 0, -10])
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cylinder(d = hub_diameter, h = 100);
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translate([0, 0, 0])
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hub_attachment(0.2);
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/*
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// Subtract motor shaft hole
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translate([0, 0, -10])
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intersection(){
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cylinder(d = motor_shaft_diameter, h = 100);
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cube([motor_shaft_diameter, motor_shaft_diameter-1, 100], center = true);
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}
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*/
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}
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}
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module hub() {
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// Subtract motor shaft hole
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difference(){
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cylinder(d = hub_diameter, h = hub_height + 3);
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translate([0, 0, -1])
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intersection(){
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cylinder(d = motor_shaft_diameter, h = 100);
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cube([motor_shaft_diameter, motor_shaft_diameter-1, 100], center = true);
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};
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cylinder(d = motor_shaft_diameter, h = 2);
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}
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hub_attachment();
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}
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module hub_attachment(aug = 0) {
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outer_diameter = hub_diameter + (tolerance * 6) + (aug * 2);
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mid_diameter = hub_diameter + (tolerance * 2) + (aug * 2);
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inner_diameter = outer_diameter - (tolerance * 2) - (aug * 2);
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difference(){
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column(outer_diameter, inner_diameter, rotor_wall_thickness);
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translate([0, 0, -10])
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ports();
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}
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translate([0, 0, rotor_wall_thickness])
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column(outer_diameter, mid_diameter, rotor_wall_thickness);
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column(mid_diameter, hub_diameter - (aug * 2), rotor_wall_thickness * 2);
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}
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module stator_top() {
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difference() {
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// Rounded top
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intersection() {
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// Unrounded full cylinder
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cylinder(d = diameter, h = stator_wall_thickness);
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// Add Minkowski rounded version
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minkowski() {
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cylinder(h = stator_wall_thickness - round_radius, d = diameter - round_radius * 2);
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sphere(r = round_radius);
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}
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}
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// Subtract central opening for pressure zone
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translate([0, 0, -1])
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cylinder(d = diameter * pressure_zone, h = stator_wall_thickness + 2);
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// Subtract mounting holes for stator
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for (i = [0:360/number_of_mounting_holes:360]) {
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// Subtract screw hole
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, -1]) // Adjusted position
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cylinder(d = screw_diameter, h = stator_wall_thickness + 2);
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// Subtract counterbore
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, stator_wall_thickness - screw_bore_depth]) // Adjusted position
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cylinder(d = screw_bore_diameter, h = stator_wall_thickness);
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}
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}
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}
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module stator_bottom() {
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difference() {
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// Rounded bottom
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intersection() {
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// Unrounded full cylinder
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cylinder(d = diameter, h = stator_wall_thickness);
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// Minkowski rounded version
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minkowski() {
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cylinder(h = stator_wall_thickness - round_radius, d = diameter - round_radius * 2);
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sphere(r = round_radius);
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}
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}
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// Subtract central hole for motor
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translate([0, 0, -1])
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cylinder(d = motor_diameter + (tolerance * 2), h = stator_wall_thickness + 5);
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// Subtract mounting holes for stator
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for (i = [0:360/number_of_mounting_holes:360]) {
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// Subtract screw hole
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, -1]) // Adjusted position
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cylinder(d = screw_diameter, h = stator_wall_thickness + 2);
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// Subtract counterbore
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rotate([0, 0, i])
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translate([stator_screw_offset, 0, stator_wall_thickness - screw_bore_depth]) // Adjusted position
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cylinder(d = screw_bore_diameter, h = stator_wall_thickness);
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}
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// Subtract mounting holes for motor frame
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rotate([180, 0, 0])
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translate([0, 0, -stator_wall_thickness])
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for (i = [0:360/number_of_mounting_holes:360]) {
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// Subtract screw hole
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rotate([0, 0, i])
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translate([motor_frame_screw_offset, 0, -1]) // Adjusted position
|
||
|
|
cylinder(d = screw_diameter, h = stator_wall_thickness + 2);
|
||
|
|
|
||
|
|
// Subtract counterbore
|
||
|
|
rotate([0, 0, i])
|
||
|
|
translate([motor_frame_screw_offset, 0, stator_wall_thickness - screw_bore_depth]) // Adjusted position
|
||
|
|
cylinder(d = screw_bore_diameter, h = stator_wall_thickness);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module motor_frame() {
|
||
|
|
difference() {
|
||
|
|
intersection(){
|
||
|
|
union(){
|
||
|
|
|
||
|
|
// Rounded base
|
||
|
|
rotate([180, 0, 0])
|
||
|
|
translate([0, 0, -stator_wall_thickness])
|
||
|
|
intersection() {
|
||
|
|
// Unrounded full cylinder
|
||
|
|
cylinder(d = motor_frame_diameter, h = stator_wall_thickness);
|
||
|
|
|
||
|
|
// Minkowski rounded version
|
||
|
|
minkowski() {
|
||
|
|
cylinder(h = stator_wall_thickness - round_radius, d = motor_frame_diameter - round_radius * 2);
|
||
|
|
sphere(r = round_radius);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
translate([0, 0, stator_wall_thickness])
|
||
|
|
// Outer cylinder
|
||
|
|
cylinder(d = motor_frame_diameter, h = motor_height);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Outer cylinder
|
||
|
|
cylinder(d = motor_frame_diameter, h = motor_height);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Subtract inner cylinder
|
||
|
|
translate([0, 0, stator_wall_thickness])
|
||
|
|
cylinder(d = motor_frame_diameter - (stator_wall_thickness * 2), h = motor_height + 2);
|
||
|
|
|
||
|
|
// Subtract ports
|
||
|
|
rotate([0, 0, -90/number_of_mounting_holes])
|
||
|
|
ports(number_of_mounting_holes);
|
||
|
|
|
||
|
|
intersection(){
|
||
|
|
difference() {
|
||
|
|
// Inner cylinder (subtract)
|
||
|
|
translate([0, 0, -1])
|
||
|
|
cylinder(d = (motor_frame_screw_offset * 2) - stator_wall_thickness, h = motor_height + 2);
|
||
|
|
|
||
|
|
translate([0, 0, 0])
|
||
|
|
cylinder(d = (motor_screw_y_offset * 2) + stator_wall_thickness, h = motor_height + 2);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Subtract ports
|
||
|
|
translate([0, 0, -stator_wall_thickness - 2])
|
||
|
|
rotate([0, 0, -90/number_of_mounting_holes])
|
||
|
|
ports(number_of_mounting_holes);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Subtract mounting holes for frame
|
||
|
|
for (i = [0:360/number_of_mounting_holes:360]) {
|
||
|
|
rotate([0, 0, i])
|
||
|
|
translate([motor_frame_screw_offset, 0, motor_height - screw_length - 5]) // Adjusted position
|
||
|
|
cylinder(d = screw_insert_diameter, h = 15);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Subtract magnet hole
|
||
|
|
translate([0, 0, -10])
|
||
|
|
cylinder(d = magnet_diameter + (tolerance * 2), h = 100);
|
||
|
|
|
||
|
|
// Subtract mounting holes for motor
|
||
|
|
for (i = [0:360/number_of_mounting_holes:360]) {
|
||
|
|
rotate([0, 0, i]) {
|
||
|
|
// Use modulo to alternate between x and y offsets
|
||
|
|
motor_screw_offset = (floor(i / (360/number_of_mounting_holes)) % 2 == 0) ?
|
||
|
|
motor_screw_x_offset : motor_screw_y_offset;
|
||
|
|
|
||
|
|
translate([motor_screw_offset, 0, -1])
|
||
|
|
cylinder(d = screw_diameter, h = 15);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module base() {
|
||
|
|
union(){
|
||
|
|
difference(){
|
||
|
|
rotate_extrude() {
|
||
|
|
polygon(curved_polygon(
|
||
|
|
points = [
|
||
|
|
[diameter / 3, motor_height],
|
||
|
|
[motor_frame_diameter / 2, motor_height - 5],
|
||
|
|
[motor_frame_diameter / 2, 0],
|
||
|
|
[motor_frame_diameter / 2, -10],
|
||
|
|
[diameter / 3, -15]
|
||
|
|
],
|
||
|
|
steps = 100,
|
||
|
|
x_shift = -stator_wall_thickness,
|
||
|
|
y_shift = 0
|
||
|
|
));
|
||
|
|
}
|
||
|
|
// Subtract ports
|
||
|
|
translate([0, 0, -25])
|
||
|
|
rotate([0, 0, -90/number_of_mounting_holes])
|
||
|
|
ports(number_of_mounting_holes, 45);
|
||
|
|
|
||
|
|
/*
|
||
|
|
translate([0, 0, -19])
|
||
|
|
// Subtract mounting holes for stator
|
||
|
|
for (i = [0:360/number_of_mounting_holes:360]) {
|
||
|
|
// Subtract screw hole
|
||
|
|
rotate([0, 0, i])
|
||
|
|
translate([stator_screw_offset, 0, -1]) // Adjusted position
|
||
|
|
cylinder(d = screw_diameter, h = stator_wall_thickness + 2);
|
||
|
|
|
||
|
|
// Subtract counterbore
|
||
|
|
rotate([0, 0, i])
|
||
|
|
translate([stator_screw_offset, 0, stator_wall_thickness - screw_bore_depth]) // Adjusted position
|
||
|
|
cylinder(d = screw_bore_diameter, h = stator_wall_thickness);
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
}
|
||
|
|
motor_frame();
|
||
|
|
translate([0, 0, -23])
|
||
|
|
stator_top();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
stator(siren_diameter, siren_height, port_height, number_of_ports);
|
||
|
|
//translate([diameter - 10, 0, tolerance])
|
||
|
|
/*
|
||
|
|
intersection(){
|
||
|
|
cylinder(h = 30, d = 30);
|
||
|
|
rotor();
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
rotor();
|
||
|
|
/*
|
||
|
|
translate([diameter - 10, 0, height + 10])
|
||
|
|
hub_attachment();
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
translate([0, 0, height + 2])
|
||
|
|
stator_top();
|
||
|
|
rotate([180, 0, 0])
|
||
|
|
translate([0, 0, 2])
|
||
|
|
stator_bottom();
|
||
|
|
//translate([0, 0, -motor_height - 10])
|
||
|
|
//motor_frame();
|
||
|
|
translate([0, 0, -motor_height - 15])
|
||
|
|
base();
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
stator();
|
||
|
|
translate([diameter + 10, 0, tolerance])
|
||
|
|
rotor();
|
||
|
|
translate([diameter * 2 + 10, 0, height + 2])
|
||
|
|
stator_top();
|
||
|
|
rotate([180, 0, 0])
|
||
|
|
translate([-diameter - 10, 0, 2])
|
||
|
|
stator_bottom();
|
||
|
|
translate([-diameter * 2 - 10, 0, -motor_height - 10])
|
||
|
|
motor_frame();
|
||
|
|
translate([-diameter * 3 - 10, 0, -motor_height - 10])
|
||
|
|
base();
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
// for testing
|
||
|
|
difference(){
|
||
|
|
cylinder(h=5.5, d=20);
|
||
|
|
translate([-5, 0, -1])
|
||
|
|
cylinder(h=10, d=screw_diameter);
|
||
|
|
translate([-5, 0, 3])
|
||
|
|
cylinder(h=5, d=screw_bore_diameter);
|
||
|
|
|
||
|
|
translate([5, 0, -1])
|
||
|
|
cylinder(h=10, d=screw_insert_diameter);
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|