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Drive gear improvements.

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Revar Desmera
2014-08-31 03:19:49 -07:00
parent a6e3ee1c23
commit da44c90a5e
1 changed files with 24 additions and 5 deletions
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29
drive_gear_parts.scad
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@@ -5,37 +5,56 @@ use <publicDomainGearV1.1.scad>
module drive_gear() {
h = 10;
shaft = 5.2;
render(convexity=10) union() {
difference() {
// Herringbone gear
mirror_copy([0, 0, 1]) {
translate([0, 0, h/4]) {
gear (
mm_per_tooth = 5,
number_of_teeth = 9,
thickness = h/2,
hole_diameter = 5.2,
hole_diameter = shaft,
twist = 15,
teeth_to_hide = 0,
pressure_angle = 20
);
}
}
// Bevel end of gear.
tube(h=6, r1=20, r2=7.5, wall=4);
}
difference() {
union() {
// Fix up gear weirdness with solid center.
cylinder(h=h, r=5.5, center=true);
translate([0, 0, -(h+7)/2])
cylinder(h=7, r=9, center=true);
// Base
translate([0, 0, -(h+11)/2])
cylinder(h=11, r=9, center=true);
}
cylinder(h=(h+5)*3, r=5.2/2, center=true, $fn=16);
translate([5/2+1, 0, -(h/2+12)/2]) {
difference() {
// Shaft hole
cylinder(h=(h+5)*3, r=shaft/2, center=true, $fn=16);
// Shaft flat side.
translate([1.4*shaft, 0, 0])
cube(size=[shaft*2, shaft*2, (h+6)*3], center=true);
}
translate([5/2+1, 0, -(h/2+5+11)/2]) {
yrot(90) {
// Nut Slot
scale([1.1, 1.1, 1.1]) hull() {
metric_nut(size=3, hole=false);
translate([5, 0, 0])
metric_nut(size=3, hole=false);
}
// Set screw hole.
translate([0, 0, 2])
cylinder(r=3.2/2, h=9, center=true, $fn=8);
}