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Basic geared hinge shape
Gearbox is boxy and not optimized.

Tolerances too tight for printing with default Module = 1.
Test print in PETG did not move.
This commit is contained in:
Stephen Carpenter
2020-01-07 11:09:34 -05:00
committed by sjc
commit 4f4f0dc585
1 changed files with 84 additions and 0 deletions
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gears.scad Normal file
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use <PolyGear/PolyGear.scad>
use <PolyGear/shortcuts.scad>
width = 5;
N1 = 9;
N2 = 9;
axis_angle = -0;
// RefD = M/N ; Default M=1
MeshD=(N1+N2)/2;
echo("Reference Diameter (MeshD): ", MeshD);
//rot=360/N1*$t;
rot=90-5*$t;
//rot=90;
//axis_angle = -50;
color("blue") translate([-MeshD/2,0]) rotate([0,0,rot]) {
render() intersection() {
spur_gear(n=N1, w=width, helix_angle=constant(axis_angle/2));
difference() {
CyS(r=MeshD, h=width, w1=215, w2=20);
// Shaft Hole
cylinder(d=4, h=12, center=true, $fn=16);
}
}
// leaf arm
translate([MeshD/2 - 1.75,4,0]) cube([1.25,8,5], center=true);
// Block
//difference() {
// translate([-MeshD/2 + 1.75,-3,0]) cube([1.25,3,5], center=true);
// translate([-4.125,-4.5,0]) rotate([0,0,45]) cube([1.5,3,6], center=true);
//}
}
color ("red") translate([MeshD/2,0]) rotate([0,0,-rot]){
render() {
difference() {
union() {
intersection() {
spur_gear(n=N2, w=width, helix_angle=constant(axis_angle/2));
CyS(r=MeshD, h=width, w1=150, w2=-30);
}
// leaf arm
translate([-MeshD/2 + 1.75,4,0]) cube([1.25,8,5], center=true);
// Block
//translate([+MeshD/2 - 1,-1,0]) cube([1.5,6,5], center=true);
//translate([3.5,-3.5,0]) rotate([0,0,-45]) cube([4,1.85,4], center=true);
CyS(r=MeshD - 3, h=width, w1=-55, w2=-30);
}
// Shaft Hole
cylinder(d=4, h=12, center=true, $fn=16);
// Block limit
translate([5.75,-3,0]) cube([5,5,5], center=true);
}
}
}
module box() {
translate([MeshD/2,0]) {
cylinder(d=4-.2, h=width+1,$fn=16, center=true);
translate([2,0]) cube([5,1,width+1], center=true);
translate([4.5,-3]) cube([1,7,width+1], center=true);
}
translate([-MeshD/2,0]) {
cylinder(d=4-.2, h=width+1,$fn=16, center=true);
translate([-2,0]) cube([5,1,width+1], center=true);
translate([-4.5,-3]) cube([1,7,width+1], center=true);
}
translate([0,-6.5,0]) cube([19,1,width+1],center=true);
translate([0,-3.5,-width/2 - .75]) cube([19,6.5,1], center=true);
translate([0,-3.5,width/2 + .75]) cube([19,6.5,1], center=true);
}
color("green") {
//box();
}