95 lines
2.5 KiB
OpenSCAD
95 lines
2.5 KiB
OpenSCAD
/*
|
|
* Bearing model.
|
|
*
|
|
* Originally by Hans Häggström, 2010.
|
|
* Dual licenced under Creative Commons Attribution-Share Alike 3.0 and LGPL2 or later
|
|
*/
|
|
|
|
include <units.scad>
|
|
include <materials.scad>
|
|
|
|
// Example, uncomment to view
|
|
//test_bearing();
|
|
//test_bearing_hole();
|
|
|
|
module test_bearing(){
|
|
bearing();
|
|
bearing(pos=[5*cm, 0,0], angle=[90,0,0]);
|
|
bearing(pos=[-2.5*cm, 0,0], model=688);
|
|
}
|
|
|
|
module test_bearing_hole(){
|
|
difference(){
|
|
translate([0, 0, 3.5]) cube(size=[30, 30, 7-10*epsilon], center=true);
|
|
bearing(outline=true);
|
|
}
|
|
}
|
|
|
|
BEARING_INNER_DIAMETER = 0;
|
|
BEARING_OUTER_DIAMETER = 1;
|
|
BEARING_WIDTH = 2;
|
|
|
|
// Common bearing names
|
|
SkateBearing = 608;
|
|
|
|
// Bearing dimensions
|
|
// model == XXX ? [inner dia, outer dia, width]:
|
|
function bearingDimensions(model) =
|
|
model == 608 ? [8*mm, 22*mm, 7*mm]:
|
|
model == 623 ? [3*mm, 10*mm, 4*mm]:
|
|
model == 624 ? [4*mm, 13*mm, 5*mm]:
|
|
model == 627 ? [7*mm, 22*mm, 7*mm]:
|
|
model == 688 ? [8*mm, 16*mm, 4*mm]:
|
|
model == 698 ? [8*mm, 19*mm, 6*mm]:
|
|
[8*mm, 22*mm, 7*mm]; // this is the default
|
|
|
|
|
|
function bearingWidth(model) = bearingDimensions(model)[BEARING_WIDTH];
|
|
function bearingInnerDiameter(model) = bearingDimensions(model)[BEARING_INNER_DIAMETER];
|
|
function bearingOuterDiameter(model) = bearingDimensions(model)[BEARING_OUTER_DIAMETER];
|
|
|
|
module bearing(pos=[0,0,0], angle=[0,0,0], model=SkateBearing, outline=false,
|
|
material=Steel, sideMaterial=Brass) {
|
|
// Common bearing names
|
|
model =
|
|
model == "Skate" ? 608 :
|
|
model;
|
|
|
|
w = bearingWidth(model);
|
|
innerD = outline==false ? bearingInnerDiameter(model) : 0;
|
|
outerD = bearingOuterDiameter(model);
|
|
|
|
innerRim = innerD + (outerD - innerD) * 0.2;
|
|
outerRim = outerD - (outerD - innerD) * 0.2;
|
|
midSink = w * 0.1;
|
|
|
|
translate(pos) rotate(angle) union() {
|
|
color(material)
|
|
difference() {
|
|
// Basic ring
|
|
Ring([0,0,0], outerD, innerD, w, material, material);
|
|
|
|
if (outline==false) {
|
|
// Side shields
|
|
Ring([0,0,-epsilon], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
|
|
Ring([0,0,w-midSink], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
|
|
}
|
|
}
|
|
}
|
|
|
|
module Ring(pos, od, id, h, material, holeMaterial) {
|
|
color(material) {
|
|
translate(pos)
|
|
difference() {
|
|
cylinder(r=od/2, h=h, $fs = 0.01);
|
|
color(holeMaterial)
|
|
translate([0,0,-10*epsilon])
|
|
cylinder(r=id/2, h=h+20*epsilon, $fs = 0.01);
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|