Added a switch to generate bearing outlines for hole cutting etc.
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c803681562
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bearing.scad
29
bearing.scad
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@ -8,12 +8,23 @@
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include <units.scad>
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include <units.scad>
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include <materials.scad>
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include <materials.scad>
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// Example, uncomment to view
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//bearing_test();
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//bearing_hole_test();
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module bearing_test(){
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module bearing_test(){
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bearing();
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bearing();
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bearing(pos=[5*cm, 0,0], angle=[90,0,0]);
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bearing(pos=[5*cm, 0,0], angle=[90,0,0]);
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bearing(pos=[-2.5*cm, 0,0], model=Bearing688);
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bearing(pos=[-2.5*cm, 0,0], model=Bearing688);
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}
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}
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module bearing_hole_test(){
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difference(){
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translate([0, 0, 3.5]) cube(size=[30, 30, 7-10*epsilon], center=true);
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bearing(outline=true);
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}
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}
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BEARING_INNER_DIAMETER = 0;
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BEARING_INNER_DIAMETER = 0;
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BEARING_OUTER_DIAMETER = 1;
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BEARING_OUTER_DIAMETER = 1;
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BEARING_WIDTH = 2;
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BEARING_WIDTH = 2;
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@ -27,27 +38,29 @@ function bearingWidth(model) = model[BEARING_WIDTH];
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function bearingInnerDiameter(model) = model[BEARING_INNER_DIAMETER];
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function bearingInnerDiameter(model) = model[BEARING_INNER_DIAMETER];
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function bearingOuterDiameter(model) = model[BEARING_OUTER_DIAMETER];
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function bearingOuterDiameter(model) = model[BEARING_OUTER_DIAMETER];
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module bearing(pos=[0,0,0], angle=[0,0,0], model=SkateBearing, material=Steel, sideMaterial=Brass) {
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module bearing(pos=[0,0,0], angle=[0,0,0], model=SkateBearing, outline=false,
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material=Steel, sideMaterial=Brass) {
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w = bearingWidth(model);
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w = bearingWidth(model);
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innerD = bearingInnerDiameter(model);
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innerD = outline==false ? bearingInnerDiameter(model) : 0;
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outerD = bearingOuterDiameter(model);
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outerD = bearingOuterDiameter(model);
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innerRim = innerD + (outerD - innerD) * 0.2;
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innerRim = innerD + (outerD - innerD) * 0.2;
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outerRim = outerD - (outerD - innerD) * 0.2;
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outerRim = outerD - (outerD - innerD) * 0.2;
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midSink = w * 0.1;
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midSink = w * 0.1;
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color(material)
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translate(pos) rotate(angle) union() {
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translate(pos)
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color(material)
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rotate(angle) {
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difference() {
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difference() {
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// Basic ring
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// Basic ring
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Ring([0,0,0], outerD, innerD, w, material, material);
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Ring([0,0,0], outerD, innerD, w, material, material);
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if (outline==false) {
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// Side shields
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// Side shields
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Ring([0,0,-epsilon], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
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Ring([0,0,-epsilon], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
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Ring([0,0,w-midSink], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
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Ring([0,0,w-midSink], outerRim, innerRim, epsilon+midSink, sideMaterial, material);
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}
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}
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}
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}
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}
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module Ring(pos, od, id, h, material, holeMaterial) {
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module Ring(pos, od, id, h, material, holeMaterial) {
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color(material) {
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color(material) {
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@ -20,5 +20,5 @@ M8 = 8*mm;
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// When a small distance is needed to overlap shapes for boolean cutting, etc.
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// When a small distance is needed to overlap shapes for boolean cutting, etc.
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epsilon = 0.0001*mm;
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epsilon = 0.01*mm;
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