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Second test, bigger, badder

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Module is now parametric, as are most values.
Larger leafs
Larger gears
Thicker walls.
This commit is contained in:
Stephen Carpenter
2020-01-07 15:14:09 -05:00
committed by sjc
parent 4f4f0dc585
commit 3ea8a73f40
1 changed files with 62 additions and 33 deletions
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95
gears.scad
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@@ -1,39 +1,46 @@
use <PolyGear/PolyGear.scad> use <PolyGear/PolyGear.scad>
use <PolyGear/shortcuts.scad> use <PolyGear/shortcuts.scad>
width = 5; width = 8;
N1 = 9; N = 9;
N2 = 9; // Force same number of teeth
axis_angle = -0; N1=N;
N2=N;
axis_angle = 0;
Module=1.3;
// RefD = M/N ; Default M=1 ShaftD=4.5;
MeshD=Module*(N1+N2)/2;
MeshD=(N1+N2)/2; SwingAdd = 1;
Swing = MeshD/2 + Module + SwingAdd;
// RefD = M*N ; Default M=1
tol=.2;
BackW=Swing+Module;
SideW=tol+BackW;
echo("Reference Diameter (MeshD): ", MeshD); echo("Reference Diameter (MeshD): ", MeshD);
//rot=360/N1*$t; //rot=360/N1*$t;
rot=90-5*$t; //rot=90-90*$t;
//rot=90; rot=90;
//axis_angle = -50; //axis_angle = -50;
color("blue") translate([-MeshD/2,0]) rotate([0,0,rot]) { color("blue") translate([-MeshD/2,0]) rotate([0,0,rot]) {
render() intersection() { render() intersection() {
spur_gear(n=N1, w=width, helix_angle=constant(axis_angle/2)); spur_gear(n=N1, w=width, m=Module,helix_angle=constant(axis_angle/2));
difference() { difference() {
CyS(r=MeshD, h=width, w1=215, w2=20); CyS(r=MeshD, h=width, w1=215, w2=20);
// Shaft Hole // Shaft Hole
cylinder(d=4, h=12, center=true, $fn=16); cylinder(d=ShaftD, h=12, center=true, $fn=16);
// Block limit
translate([-BackW+2*tol,-MeshD/2,0]) cube([MeshD,MeshD,width], center=true);
} }
} }
// leaf arm // leaf arm
translate([MeshD/2 - 1.75,4,0]) cube([1.25,8,5], center=true); translate([MeshD/2 - 2.5,4,0]) cube([2,8,5], 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);
//}
} }
@@ -42,12 +49,12 @@ color ("red") translate([MeshD/2,0]) rotate([0,0,-rot]){
difference() { difference() {
union() { union() {
intersection() { intersection() {
spur_gear(n=N2, w=width, helix_angle=constant(axis_angle/2)); spur_gear(n=N2, w=width, m=Module, helix_angle=constant(axis_angle/2));
CyS(r=MeshD, h=width, w1=150, w2=-30); CyS(r=MeshD, h=width, w1=150, w2=-30);
} }
// leaf arm // leaf arm
translate([-MeshD/2 + 1.75,4,0]) cube([1.25,8,5], center=true); translate([-MeshD/2 + 2.5,4,0]) cube([2,8,5], center=true);
// Block // Block
//translate([+MeshD/2 - 1,-1,0]) cube([1.5,6,5], center=true); //translate([+MeshD/2 - 1,-1,0]) cube([1.5,6,5], center=true);
@@ -55,30 +62,52 @@ color ("red") translate([MeshD/2,0]) rotate([0,0,-rot]){
CyS(r=MeshD - 3, h=width, w1=-55, w2=-30); CyS(r=MeshD - 3, h=width, w1=-55, w2=-30);
} }
// Shaft Hole // Shaft Hole
cylinder(d=4, h=12, center=true, $fn=16); cylinder(d=ShaftD, h=12, center=true, $fn=16);
// Block limit // Block limit
translate([5.75,-3,0]) cube([5,5,5], center=true); translate([BackW-2*tol,-MeshD/2,0]) cube([MeshD,MeshD,width+1], center=true);
} }
} }
} }
module box() { module box(
d=ShaftD,
tol=.3,
ShaftFN=$fn,
MeshD=MeshD,
Module=Module,
SwingAdd=1,
WallD=1.5,
full=true)
{
Swing = MeshD/2 + Module + SwingAdd;
BackW=WallD/2 + Swing+Module+1;
SideW=tol -1 + BackW-MeshD/2;
if (full == true) {
mirror([1,0,0]) box(d=d, tol=tol, ShaftFN=ShaftFN, full=false);
}
translate([MeshD/2,0]) { translate([MeshD/2,0]) {
cylinder(d=4-.2, h=width+1,$fn=16, center=true); // Shaft
translate([2,0]) cube([5,1,width+1], center=true); cylinder(d=d-tol, h=width+1,$fn=ShaftFN, center=true);
translate([4.5,-3]) cube([1,7,width+1], center=true); // Front Wall
translate([BackW/2 - SideW +1,0]) cube([SideW+tol,WallD,width+1], center=true);
// Side Wall
translate([SideW,-Swing/2]) cube([WallD,Swing+WallD,width+1], center=true);
} }
translate([-MeshD/2,0]) { // Back Wall
cylinder(d=4-.2, h=width+1,$fn=16, center=true); translate([BackW/2,-Swing,0]) cube([BackW,WallD,width+1],center=true);
translate([-2,0]) cube([5,1,width+1], center=true); // Bottom/Top
translate([-4.5,-3]) cube([1,7,width+1], center=true); translate([BackW/2,-(Swing)/2,-width/2 - WallD/2 - tol])
cube([BackW,Swing+WallD,WallD], center=true);
translate([BackW/2,-(Swing)/2,width/2 + WallD/2 + tol])
difference() {
cube([BackW,Swing+WallD,WallD], center=true);
translate([-Swing/2,0,0]) cube([BackW/2, Swing/2,4],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") { color("green") {
//box(); box(full = true, ShaftFN=16);
} }