zo / sprinkler.scad

include <gears.scad> gear_module = 1.0; gear_bore_diameter = 3.4; spigot_tooth = 16; gear_tooth = 25; ring_tooth = spigot_tooth * 2 + gear_tooth; ring_rim = 4.0; gear_clearance = gear_module / 6.0; spigot_diameter = gear_module * spigot_tooth + (gear_module + gear_clearance) * 2; gear_diameter = gear_module * gear_tooth - (gear_module + gear_clearance) * 2; ring_diameter = gear_module * ring_tooth + (gear_module + gear_clearance) * 2; ring_outer_diameter = ring_diameter + ring_rim * 2; spigot_center_distance = (spigot_tooth + gear_tooth) / 2; eps = 0.01; // Spigot translate([60, 0, 0]) spur_gear(gear_module, spigot_tooth, 4.0, gear_bore_diameter); translate([0, 0, 0]) { // Ring translate([0, 0, 2]) difference() { ring_gear(gear_module, ring_tooth, 5.0, ring_rim); translate([0, 0, -eps]) rotate_extrude(angle=180) square([ring_diameter / 2 + 0.1, 5 + eps * 2]); } // Gear translate([0, 0, 2]) { rotate(140) difference() { spur_gear(gear_module, gear_tooth, 4.0, gear_bore_diameter); translate([0, 0, -eps]) rotate([0, 0, 10]) rotate_extrude(angle=240) { translate([gear_diameter / 2 - eps, 0, 0]) square([3.0, 4 + eps * 2]); } } } difference() { cylinder(h=2, r=ring_outer_diameter/2); translate([0, 0, -eps]) cylinder(h=2 + eps * 2, r=gear_bore_diameter / 2); for(rot = [0 : 30 : 360]) { translate([sin(rot) * 22, cos(rot) * 22, -eps]) cylinder(h=2 + eps * 2, r=4); } } } // Base and ring hub translate([0, 60, 0]) { difference() { union() { cylinder(h=2, r=15); translate([30, 0, 0]) cylinder(h=9.5, r=15); translate([0, -15, 0]) cube([30, 30, 2]); } translate([0, 0, 2.01]) cylinder(h=7.5, r=ring_outer_diameter / 2 + 1); translate([39, 5, 2.01]) cylinder(h=8, r=2.1); translate([39, -5, 2.01]) cylinder(h=8, r=2.1); } cylinder(h=9, r=(gear_bore_diameter - 0.1) / 2); cylinder(h=3, r=(gear_bore_diameter + 2.5) / 2); } // Top piece and spigot hub translate([0, 100, 0]) { cylinder(h=2, r=spigot_diameter / 2); translate([10, 0, 0]) cylinder(h=2, r=15); translate([39 - spigot_center_distance, 5, 2]) cylinder(h=5, r=2.0); translate([39 - spigot_center_distance, -5, 2]) cylinder(h=5, r=2.0); cylinder(h=7, r=(gear_bore_diameter - 0.1) / 2); cylinder(h=3, r=(gear_bore_diameter + 2.5) / 2); }