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add LM8UU linear bearings

pull/9/head
Glen Chung 2013-10-19 00:49:12 +08:00
parent 539078ef33
commit 499d535807
3 changed files with 118 additions and 3 deletions
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7
Hardware/Development/Cyclone_Template/template.scad
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@ -103,8 +103,11 @@ module Y_idle_stand() {
}
module linear_bearing_holder() {
color([1,0.5,0])
rotate([0,-90,-90]) translate([3,0,0]) lm8uu_bearing_holder();
rotate([0,-90,-90]) translate([3,0,0])
if(Display_Extra_Parts)
lm8uu_bearing_holder(with_extra_parts=Display_Extra_Parts, exploded=Exploded_Drawing);
else
color([1,0.5,0]) lm8uu_bearing_holder(with_extra_parts=Display_Extra_Parts, exploded=Exploded_Drawing);
}
module Y_nut_holder() {

16
Hardware/Development/Y_axis/linear_bearing_holder.scad
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@ -14,6 +14,8 @@
//And is a drop-in replacement for:
//http://www.thingiverse.com/thing:10287
use <../libs/linear_bearing.scad>
// screw/nut dimensions
screw_dia = 4;
nut_dia = 8.5;
@ -54,7 +56,7 @@ module mount_plate()
}
}
module lm8uu_bearing_holder() {
module lm8uu_bearing_holder(with_extra_parts=false, exploded=false) {
intersection() {
rotate([90,0,90])
difference()
@ -80,6 +82,18 @@ module lm8uu_bearing_holder() {
//cube([plate_width+3,plate_width+3,100],center=true);
cylinder(r=(plate_width+10)/2,h=100,center=true,$fn=8);
}
if(with_extra_parts) {
if(exploded)
lm8uu_bearing_holder_extras(exploded_distance=1.3*linearBearing_L("LM8UU"));
else
lm8uu_bearing_holder_extras(exploded_distance=0);
}
}
module lm8uu_bearing_holder_extras(exploded_distance=0) {
rotate([90,0,90]) translate([0,0,LM8UU_dia/2+2]) rotate([90,0,0])
translate([0,0,exploded_distance])
linearBearing(pos=[0,0,-linearBearing_L("LM8UU")/2], model="LM8UU");
}
lm8uu_bearing_holder();

98
Hardware/Development/libs/linear_bearing.scad Normal file
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@ -0,0 +1,98 @@
//By Glen Chung, 2013.
//Dual licenced under Creative Commons Attribution-Share Alike 3.0 and LGPL2 or later
include <MCAD/units.scad>
include <MCAD/materials.scad>
LINEAR_BEARING_dr = 0; //Inscribed circle
LINEAR_BEARING_D = 1; //Outer diameter
LINEAR_BEARING_L = 2; //Length
LINEAR_BEARING_B = 3; //Outer locking groove B
LINEAR_BEARING_D1 = 4; //Outer locking groove D1
LINEAR_BEARING_W = 5; //W
// Common bearing names
LinearBearing = "LM8UU";
// Linear Bearing dimensions
// model == "XXXXX" ? [ dr, D, L, B, D1, W]:
function linearBearingDimensions(model) =
model == "LM3UU" ? [ 3*mm, 7*mm, 10*mm, 0.0*mm, 0.0*mm, 0.00*mm]:
model == "LM4UU" ? [ 4*mm, 8*mm, 12*mm, 0.0*mm, 0.0*mm, 0.00*mm]:
model == "LM5UU" ? [ 5*mm, 10*mm, 15*mm, 10.2*mm, 9.6*mm, 1.10*mm]:
model == "LM6UU" ? [ 6*mm, 12*mm, 19*mm, 13.5*mm, 11.5*mm, 1.10*mm]:
model == "LM8SUU" ? [ 8*mm, 15*mm, 17*mm, 11.5*mm, 14.3*mm, 1.10*mm]:
model == "LM10UU" ? [ 10*mm, 19*mm, 29*mm, 22.0*mm, 18.0*mm, 1.30*mm]:
model == "LM12UU" ? [ 12*mm, 21*mm, 30*mm, 23.0*mm, 20.0*mm, 1.30*mm]:
model == "LM13UU" ? [ 13*mm, 23*mm, 32*mm, 23.0*mm, 22.0*mm, 1.30*mm]:
model == "LM16UU" ? [ 16*mm, 28*mm, 37*mm, 26.5*mm, 27.0*mm, 1.60*mm]:
model == "LM20UU" ? [ 20*mm, 32*mm, 42*mm, 30.5*mm, 30.5*mm, 1.60*mm]:
model == "LM25UU" ? [ 25*mm, 40*mm, 59*mm, 41.0*mm, 38.0*mm, 1.85*mm]:
model == "LM30UU" ? [ 30*mm, 45*mm, 64*mm, 44.5*mm, 43.0*mm, 1.85*mm]:
model == "LM35UU" ? [ 35*mm, 52*mm, 70*mm, 49.5*mm, 49.0*mm, 2.10*mm]:
model == "LM40UU" ? [ 40*mm, 60*mm, 80*mm, 60.5*mm, 57.0*mm, 2.10*mm]:
model == "LM50UU" ? [ 50*mm, 80*mm, 100*mm, 74.0*mm, 76.5*mm, 2.60*mm]:
model == "LM60UU" ? [ 60*mm, 90*mm, 110*mm, 85.0*mm, 86.5*mm, 3.15*mm]:
model == "LM80UU" ? [ 80*mm, 120*mm, 140*mm, 105.5*mm, 116.0*mm, 4.15*mm]:
model == "LM100UU" ? [100*mm, 150*mm, 150*mm, 125.5*mm, 145.0*mm, 4.15*mm]:
/*model == "LM8UU" ?*/ [ 8*mm, 15*mm, 24*mm, 17.5*mm, 14.3*mm, 1.10*mm];
function linearBearing_dr(model) = linearBearingDimensions(model)[LINEAR_BEARING_dr];
function linearBearing_D(model) = linearBearingDimensions(model)[LINEAR_BEARING_D];
function linearBearing_L(model) = linearBearingDimensions(model)[LINEAR_BEARING_L];
function linearBearing_B(model) = linearBearingDimensions(model)[LINEAR_BEARING_B];
function linearBearing_D1(model) = linearBearingDimensions(model)[LINEAR_BEARING_D1];
function linearBearing_W(model) = linearBearingDimensions(model)[LINEAR_BEARING_W];
module linearBearing(pos=[0,0,0], angle=[0,0,0], model=LinearBearing,
material=Steel, sideMaterial=BlackPaint) {
dr = linearBearing_dr(model);
D = linearBearing_D(model);
L = linearBearing_L(model);
B = linearBearing_B(model);
D1 = linearBearing_D1(model);
W = linearBearing_W(model);
innerRim = dr + (D - dr) * 0.2;
outerRim = D - (D - dr) * 0.2;
midSink = W/4;
translate(pos) rotate(angle) union() {
color(material)
difference() {
// Basic ring
Ring([0,0,0], D, dr, L, material, material);
if(W) {
// Side shields
Ring([0,0,-epsilon], outerRim, innerRim, L*epsilon+midSink, sideMaterial, material);
Ring([0,0,L-midSink-epsilon], outerRim, innerRim, L*epsilon+midSink, sideMaterial, material);
//Outer locking groove
Ring([0,0,(L-B)/2], D+epsilon, outerRim+W/2, W, material, material);
Ring([0,0,L-(L-B)/2], D+epsilon, outerRim+W/2, W, material, material);
}
}
if(W)
Ring([0,0,midSink], D-L*epsilon, dr+L*epsilon, L-midSink*2, sideMaterial, sideMaterial);
}
module Ring(pos, od, id, h, material, holeMaterial) {
color(material) {
translate(pos)
difference() {
cylinder(r=od/2, h=h, $fn = 100);
color(holeMaterial)
translate([0,0,-10*epsilon])
cylinder(r=id/2, h=h+20*epsilon, $fn = 100);
}
}
}
}
//examples
//linearBearing(model="LM8UU");
//linearBearing(model="LM10UU");