99 lines
4.1 KiB
OpenSCAD
99 lines
4.1 KiB
OpenSCAD
//By Glen Chung, 2013.
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//Dual licenced under Creative Commons Attribution-Share Alike 3.0 and LGPL2 or later
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include <MCAD/units.scad>
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include <MCAD/materials.scad>
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LINEAR_BEARING_dr = 0; //Inscribed circle
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LINEAR_BEARING_D = 1; //Outer diameter
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LINEAR_BEARING_L = 2; //Length
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LINEAR_BEARING_B = 3; //Outer locking groove B
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LINEAR_BEARING_D1 = 4; //Outer locking groove D1
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LINEAR_BEARING_W = 5; //W
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// Common bearing names
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LinearBearing = "LM8UU";
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// Linear Bearing dimensions
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// model == "XXXXX" ? [ dr, D, L, B, D1, W]:
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function linearBearingDimensions(model) =
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model == "LM3UU" ? [ 3*mm, 7*mm, 10*mm, 0.0*mm, 0.0*mm, 0.00*mm]:
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model == "LM4UU" ? [ 4*mm, 8*mm, 12*mm, 0.0*mm, 0.0*mm, 0.00*mm]:
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model == "LM5UU" ? [ 5*mm, 10*mm, 15*mm, 10.2*mm, 9.6*mm, 1.10*mm]:
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model == "LM6UU" ? [ 6*mm, 12*mm, 19*mm, 13.5*mm, 11.5*mm, 1.10*mm]:
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model == "LM8SUU" ? [ 8*mm, 15*mm, 17*mm, 11.5*mm, 14.3*mm, 1.10*mm]:
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model == "LM10UU" ? [ 10*mm, 19*mm, 29*mm, 22.0*mm, 18.0*mm, 1.30*mm]:
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model == "LM12UU" ? [ 12*mm, 21*mm, 30*mm, 23.0*mm, 20.0*mm, 1.30*mm]:
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model == "LM13UU" ? [ 13*mm, 23*mm, 32*mm, 23.0*mm, 22.0*mm, 1.30*mm]:
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model == "LM16UU" ? [ 16*mm, 28*mm, 37*mm, 26.5*mm, 27.0*mm, 1.60*mm]:
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model == "LM20UU" ? [ 20*mm, 32*mm, 42*mm, 30.5*mm, 30.5*mm, 1.60*mm]:
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model == "LM25UU" ? [ 25*mm, 40*mm, 59*mm, 41.0*mm, 38.0*mm, 1.85*mm]:
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model == "LM30UU" ? [ 30*mm, 45*mm, 64*mm, 44.5*mm, 43.0*mm, 1.85*mm]:
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model == "LM35UU" ? [ 35*mm, 52*mm, 70*mm, 49.5*mm, 49.0*mm, 2.10*mm]:
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model == "LM40UU" ? [ 40*mm, 60*mm, 80*mm, 60.5*mm, 57.0*mm, 2.10*mm]:
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model == "LM50UU" ? [ 50*mm, 80*mm, 100*mm, 74.0*mm, 76.5*mm, 2.60*mm]:
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model == "LM60UU" ? [ 60*mm, 90*mm, 110*mm, 85.0*mm, 86.5*mm, 3.15*mm]:
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model == "LM80UU" ? [ 80*mm, 120*mm, 140*mm, 105.5*mm, 116.0*mm, 4.15*mm]:
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model == "LM100UU" ? [100*mm, 150*mm, 150*mm, 125.5*mm, 145.0*mm, 4.15*mm]:
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/*model == "LM8UU" ?*/ [ 8*mm, 15*mm, 24*mm, 17.5*mm, 14.3*mm, 1.10*mm];
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function linearBearing_dr(model) = linearBearingDimensions(model)[LINEAR_BEARING_dr];
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function linearBearing_D(model) = linearBearingDimensions(model)[LINEAR_BEARING_D];
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function linearBearing_L(model) = linearBearingDimensions(model)[LINEAR_BEARING_L];
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function linearBearing_B(model) = linearBearingDimensions(model)[LINEAR_BEARING_B];
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function linearBearing_D1(model) = linearBearingDimensions(model)[LINEAR_BEARING_D1];
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function linearBearing_W(model) = linearBearingDimensions(model)[LINEAR_BEARING_W];
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module linearBearing(pos=[0,0,0], angle=[0,0,0], model=LinearBearing,
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material=Steel, sideMaterial=BlackPaint) {
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dr = linearBearing_dr(model);
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D = linearBearing_D(model);
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L = linearBearing_L(model);
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B = linearBearing_B(model);
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D1 = linearBearing_D1(model);
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W = linearBearing_W(model);
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innerRim = dr + (D - dr) * 0.2;
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outerRim = D - (D - dr) * 0.2;
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midSink = W/4;
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translate(pos) rotate(angle) union() {
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color(material)
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difference() {
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// Basic ring
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Ring([0,0,0], D, dr, L, material, material);
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if(W) {
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// Side shields
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Ring([0,0,-epsilon], outerRim, innerRim, L*epsilon+midSink, sideMaterial, material);
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Ring([0,0,L-midSink-epsilon], outerRim, innerRim, L*epsilon+midSink, sideMaterial, material);
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//Outer locking groove
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Ring([0,0,(L-B)/2], D+epsilon, outerRim+W/2, W, material, material);
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Ring([0,0,L-(L-B)/2], D+epsilon, outerRim+W/2, W, material, material);
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}
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}
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if(W)
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Ring([0,0,midSink], D-L*epsilon, dr+L*epsilon, L-midSink*2, sideMaterial, sideMaterial);
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}
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module Ring(pos, od, id, h, material, holeMaterial) {
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color(material) {
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translate(pos)
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difference() {
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cylinder(r=od/2, h=h, $fn = 100);
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color(holeMaterial)
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translate([0,0,-10*epsilon])
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cylinder(r=id/2, h=h+20*epsilon, $fn = 100);
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}
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}
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}
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}
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//examples
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//linearBearing(model="LM8UU");
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//linearBearing(model="LM10UU");
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