sjc/gearhinge
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added License.txt and tweaked gear blocks

Browse Source 
Preparing for release; added License.txt and attribution

Small tweaks to gear cuts and side walls to close the gap.
This commit is contained in:
Stephen Carpenter
2021-01-10 11:01:50 -05:00
committed by sjc
parent df855a9875
commit b1beb41416
2 changed files with 60 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
GearHinge.scad
View File

@@ -1,3 +1,9 @@
/* GearHinge.scad - Parametric geared hinge for FDM manufacturing
Copyright (c) 2021 Stephen J. Carpenter <sjc@carpanet.net>
License: MIT. See License.txt for details.
*/
use <PolyGear/PolyGear.scad>
include <PolyGear/PolyGearBasics.scad>
use <PolyGear/shortcuts.scad>
@@ -35,9 +41,10 @@ SideW=tol+BackW;
echo("Reference Diameter (MeshD): ", MeshD);
//rot=360/N1*$t;
//rot=90-90*$t;
rot=45;
//rot=90;
//rot=90*$t;
//rot=20*$t +75;
rot=0;
//rot=00;
//axis_angle = -50;
//meshed(rot=rot);
@@ -72,20 +79,28 @@ module gear_hinge(
}
}
// gear_track_block - generates a bit of material to jam the gears at full
// extention to ensure that the gears don't pop out. This is only
// added to one gear.
module gear_track_block() {
difference() {
CyS(r=MeshD/2 + Module/2, h=width/2, w1=245, w2=250);
//CyS(r=MeshD/2 + Module/2, h=width/2, w1=245, w2=250);
CyS(r=MeshD - 4*Module, h=width/2, w1=245, w2=251);
CyS(r=ShaftD+1, h=width, w1=244, w2=271);
}
}
// gear_sector - Generates the shape of gear to be kept.
// currently only used on the blue_gear.
// xxx: red_gear maybe should be refactored to use it?
module gear_sector(meshd, width) {
CyS(r=meshd, h=width, w1=215, w2=00);
CyS(r=meshd/2 - 2, h=width, w1=-1, w2=90);
}
// blue_gear - Gear on the left with the track block built into its back side.
module blue_gear() {
render() {
intersection() {
spur_gear(n=N1, w=width, m=Module, chamfer=30, helix_angle = helix_angle );
difference() {
@@ -94,23 +109,27 @@ module blue_gear() {
// Shaft Hole
cylinder(d=ShaftD, h=width+2, center=true);
// Block limit - back
// Block limit - side
translate([-BackW+2*tol,-MeshD/2,0]) cube([MeshD,MeshD,width], center=true);
// Block Limit - back
translate([-MeshD,-1.5+tol, -(width+1)/2])
cube([MeshD,1.5+tol,width+1]);
// Block limit - front
translate([0,0,-width/2]) cube([1,MeshD/2,width]);
}
}
// Rear Block
gear_track_block();
}
// leaf arm
//translate([MeshD/2 - 2*Module,11,0]) cube([4,20,width+1], center=true);
translate([2,11.6,0]) rotate([0,0,0]) leaf_arm(left=true, h=width+4);
}
// Red Gear - Gear on the right.
module red_gear()
{
render() difference() {
difference() {
union() {
CyS(r=MeshD/2 - 2, h=width, w1=90, w2=190);
intersection() {
@@ -124,10 +143,11 @@ module red_gear()
}
// Shaft Hole
cylinder(d=ShaftD, h=width+2, center=true);
// Block limit -front
//translate([-Module/2,1,-width/2]) cube([Module,MeshD/2,width]);
// Block limit
// Block limit - side
translate([BackW-2*tol,-MeshD/2,0]) cube([MeshD,MeshD,width+1], center=true);
// Block limit - front
translate([0,-1.5+tol, -(width+1)/2]) cube([MeshD,1.5+tol,width+1]);
}
}
@@ -159,6 +179,8 @@ module round_case_inner(meshd, shaftd, width, tol) {
}
}
// round_case - generates the back shell of the hinge, which includes the axis
// posts of the hinges.
module round_case(
d=ShaftD,
tol=.25,
@@ -166,14 +188,14 @@ module round_case(
MeshD=MeshD,
Module=Module,
SwingAdd=1,
WallD=1.5,
spine=true,
WallD=1.2,
spine=false,
full=true)
{
Swing = MeshD/2 + Module + SwingAdd;
BackW=WallD/2 + Swing+Module+1;
SideW=tol -1 + BackW-MeshD/2;
SideW=tol + BackW-MeshD/2;
difference() {
intersection() {
@@ -189,7 +211,6 @@ module round_case(
else {
hull() round_case_inner(meshd=MeshD, shaftd=d, width=width, tol=tol);
}
//color("purple") translate([0,0,11]) cube([50,50,20], center=true);
if (full) {
echo("full is true. Not splitting.");
@@ -210,7 +231,8 @@ module round_case(
cylinder(d=d+3*tol, h=WallD+tol, center=true);
}
translate([xi*(BackW/2 - SideW +4),-WallD/2]) cube([SideW+1+tol,WallD,width+3+2*tol], center=true);
translate([xi*(SideW/2+2*tol+Module/2),-WallD/2])
cube([SideW+2*tol+Module+1,WallD,width+4], center=true);
}
}
}