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Use 2.5 hole radius, replace comments, fix carrier_simpler and sun_drive

master
Vitaliy Filippov 2014-03-26 21:25:23 +00:00
parent 4735bbc937
commit 2db882cf7e
6 changed files with 43061 additions and 58611 deletions
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32t-carrier-simpler.stl
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32t-sun-drive-simpler.stl
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32t-sun-drive.stl
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40t-2u-ring-gear-with-plane.stl
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40t-2u-ring-gear.stl
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gear-v3.scad
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@ -1,5 +1,3 @@
// Algorithmic LEGO(r) Technic compatible gear generator
//
// NOTE regarding Patents: Since 1977 the LEGO Group has produced "Technic" // NOTE regarding Patents: Since 1977 the LEGO Group has produced "Technic"
// elements with gear teeth, axles, axle-holes, and other features closely // elements with gear teeth, axles, axle-holes, and other features closely
// resembling the design(s) in this file, as part of their "Expert Builder" // resembling the design(s) in this file, as part of their "Expert Builder"
@ -18,56 +16,17 @@
// to make objects and then try to "pass them off" as LEGO products. See // to make objects and then try to "pass them off" as LEGO products. See
// for example the Kirkbi AG v. Ritvik Holdings Inc. case, (Supreme Court of // for example the Kirkbi AG v. Ritvik Holdings Inc. case, (Supreme Court of
// Canada [2005] 3 S.C.R. 302). // Canada [2005] 3 S.C.R. 302).
//
// This was originally created by user bjepson on Thingiverse (thing 29989),
// then heavily modified and expanded by Robert Munafo:
// 20121226: separate parameters for rows/columns of cylinder holes and of
// "plus-shaped" holes
// * Rotate the holes by 20 degrees to take advantage of
// edge dithering both for improved hole width resolution
// and to provide a rough surface which better grips the
// smooth axles.
// * You can now get more than just a single row of plus-holes
// in each direction
//
// 20130105: added MCAD functions to make this file work all by itself (no
// need to hunt down missing pieces elsewhere)
// * More accurate axle hole dimensions
// * Round holes are actually round now (imagine that!)
// * Automatically determines correct parameters for number and placement
// of holes, based on number of teeth
//
// 20130106: fix small glitch seen at junction of fillet and bottom land (for
// illustration of the problem, see "0106-fix.jpg" at
// thingiverse.com/thing:40410)
// 32 teeth is the real "missing" gear size, because all the other // Contains some code from thing 29989 by bjepson on Thingiverse, thing 40410
// multiples of 8 are available. An argument can also be made for 28 (which // by Robert Munafo, and MCAD library. myGear() from 40410 is here, but with
// however is available in the new small turntable) or any other multiple of 4 // different (better) involute gear teeth shape, and with some tweaks to make
// because the official gears are all multiples of 4, namely: 8, 12, 16, // better gears without degenerate faces.
// 20, 24, 28(turntable), 36, 40 and 56(big turntable).
// //
// For my orrery designs ( see mrob.com/orrery ) I might use any integer // Everything other is (c)oded by me, Vitaliy Filippov. License is GNU LGPL2.1+
// number of teeth from 8 up to around 60 or 70.
// //
// The holes parameters need to be chosen a certain way. To get a normal style // Also I HIGHLY recommend to build OpenSCAD from my fork: github.com/vitalif/openscad,
// gear with a + hole in the middle, the plus_row and plus_col should both // because there's a patch that makes OpenSCAD to use Delaunay triangulation which
// be odd, and the holes_row, holes_col should both be even. To get a round // greatly improves the resulting model quality.
// hole in the center, do it the other way 'round. Then invoke it as
// myGearParamed(n_teeth, holes_row, holes_col, plus_row, plus_col)
//
// Examples:
// my 20 gear: holes_row=2, holes_col=2, plus_row=1, plus_col=1
// Standard 24 gear: holes_row=2, holes_col=2, plus_row=1, plus_col=1
// my 28 gear: holes_row=2, holes_col=2, plus_row=3, plus_col=1
// my 32 gear: holes_row=2, holes_col=2, plus_row=3, plus_col=3
// nonstandard 36 gear: holes_row=2, holes_col=2, plus_row=3, plus_col=3
// Standard 40 gear: holes_row=4, holes_col=2, plus_row=3, plus_col=3
// my 44 gear: holes_row=4, holes_col=2, plus_row=3, plus_col=3
// my 48 gear: holes_row=4, holes_col=4, plus_row=5, plus_col=3
//
// By default, the myGear function chooses the best values for all the holes paramters
// based on the number of teeth.
// Standard LEGO dimensions: // Standard LEGO dimensions:
// Stud spacing = 8mm // Stud spacing = 8mm
@ -107,7 +66,7 @@ translate([0, 0, 16])
/* Planetary ring gear with both inner and outer 40 teeth */ /* Planetary ring gear with both inner and outer 40 teeth */
//planetary_ring_gear(plane_height=1); planetary_ring_gear(plane_height=1);
/* 40-teeth planetary ring gear with clutch */ /* 40-teeth planetary ring gear with clutch */
@ -115,7 +74,7 @@ translate([0, 0, 16])
/* Solid clutch gear, like standard 16-teeth */ /* Solid clutch gear, like standard 16-teeth */
clutchGear(32); //clutchGear(32);
/* Gear with clutch fully offset to one side */ /* Gear with clutch fully offset to one side */
@ -145,6 +104,7 @@ clutchGear(32);
//------------- //-------------
// Same as carrier_32t(), but with axle hole at the center
module sun_drive_32t() { module sun_drive_32t() {
root = 3.06*(32/2-1)/3.1415926; root = 3.06*(32/2-1)/3.1415926;
segments = 32*2; // so gear teeth edge never match cylinder segment edges segments = 32*2; // so gear teeth edge never match cylinder segment edges
@ -154,31 +114,34 @@ module sun_drive_32t() {
translate([0, 0, 2]) gear_teeth(mm_per_tooth=3.06, number_of_teeth=32, thickness=4, clearance=-0.1); translate([0, 0, 2]) gear_teeth(mm_per_tooth=3.06, number_of_teeth=32, thickness=4, clearance=-0.1);
cylinder($fn=100, h=8, r=root-0.5); cylinder($fn=100, h=8, r=root-0.5);
} }
translate([0, 0, 3.5]) cylinder($fn=32*2, h=1, r=root-0.5);
cylinder($fn=100, h=8, r=3.5); cylinder($fn=100, h=8, r=3.5);
difference() { difference() {
union() { union() {
difference() { difference() {
translate([0, 0, 0.8-0.1]) cylinder($fn=32*2, h=7.2+0.1, r=root); translate([0, 0, 0.8-0.1]) cylinder($fn=32*2, h=7.2+0.1, r=root);
translate([0, 0, -0.1]) cylinder($fn=32*2, h=7.3, r=root-1); translate([0, 0, -0.1]) cylinder($fn=32*2, h=7.1, r=root-1);
translate([0, 0, 7.2-0.1]) cylinder($fn=32*2, h=1, r=3.06*(24/2)/3.1415926);
} }
translate([-8, 0, 0]) cylinder($fn=32*2, h=8, r=3.5); translate([-8, 0, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([0, -8, 0]) cylinder($fn=32*2, h=8, r=3.5); translate([0, -8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([0, 8, 0]) cylinder($fn=32*2, h=8, r=3.5); translate([0, 8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([8, 0, 0]) cylinder($fn=32*2, h=8, r=3.5); translate([8, 0, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]); translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]);
rotate([0, 0, 90]) translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]); rotate([0, 0, 90]) translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]);
} }
translate([0, 0, 8-0.8]) cylinder($fn=32*2, r=3.06*(24/2)/3.1415926, h=1);
translate([-20, -20, -0.2]) cube(size=[40, 40, 1]); translate([-20, -20, -0.2]) cube(size=[40, 40, 1]);
} }
} }
translate([-8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.4);
translate([0, -8, -0.2]) cylinder($fn=32*2, h=10, r=2.4);
translate([0, 8, -0.2]) cylinder($fn=32*2, h=10, r=2.4);
translate([8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.4);
rotate([0, 0, 45]) axleCut(0, 0, -0.2, 10); rotate([0, 0, 45]) axleCut(0, 0, -0.2, 10);
translate([-8, 0, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([0, -8, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([0, 8, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([8, 0, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([-8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([0, -8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([0, 8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
} }
} }
@ -217,13 +180,13 @@ module carrier_32t_simpler() {
translate([0, 0, 2]) gear_teeth(mm_per_tooth=3.06, number_of_teeth=32, thickness=4, clearance=-0.1); translate([0, 0, 2]) gear_teeth(mm_per_tooth=3.06, number_of_teeth=32, thickness=4, clearance=-0.1);
cylinder($fn=100, h=8, r=root-0.5); cylinder($fn=100, h=8, r=root-0.5);
} }
difference() {
translate([0, 0, 0.8-0.1]) cylinder($fn=32*2, h=7.2+0.1, r=root);
translate([0, 0, -0.1]) cylinder($fn=32*2, h=7.1, r=root-1);
}
cylinder($fn=100, h=8, r=3.5); cylinder($fn=100, h=8, r=3.5);
difference() { difference() {
union() { union() {
difference() {
translate([0, 0, 0.8-0.1]) cylinder($fn=32*2, h=7.2+0.1, r=root);
translate([0, 0, -0.1]) cylinder($fn=32*2, h=7.1, r=root-1);
}
translate([-8, 0, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5); translate([-8, 0, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([0, -8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5); translate([0, -8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
translate([0, 8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5); translate([0, 8, 0.1]) cylinder($fn=32, h=8-0.2, r=3.5);
@ -231,21 +194,20 @@ module carrier_32t_simpler() {
translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]); translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]);
rotate([0, 0, 90]) translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]); rotate([0, 0, 90]) translate([-0.5, -root+0.5, 0]) cube(size=[1, root*2-1, 8]);
} }
translate([-20, -20, 8-0.8]) cube(size=[40, 40, 1]);
translate([-20, -20, -0.2]) cube(size=[40, 40, 1]); translate([-20, -20, -0.2]) cube(size=[40, 40, 1]);
} }
} }
translate([0, 0, -0.2]) cylinder($fn=32, h=10, r=2.4); translate([0, 0, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([-8, 0, -0.2]) cylinder($fn=32, h=10, r=2.4); translate([-8, 0, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([0, -8, -0.2]) cylinder($fn=32, h=10, r=2.4); translate([0, -8, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([0, 8, -0.2]) cylinder($fn=32, h=10, r=2.4); translate([0, 8, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([8, 0, -0.2]) cylinder($fn=32, h=10, r=2.4); translate([8, 0, -0.2]) cylinder($fn=32, h=10, r=2.5);
translate([-8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=2.9); translate([-8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([0, -8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=2.9); translate([0, -8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([0, 8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=2.9); translate([0, 8, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
translate([8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=2.9); translate([8, 0, 7.2]) cylinder($fn=32, h=0.8+0.1, r=3);
} }
} }
@ -278,11 +240,11 @@ module carrier_32t() {
translate([-20, -20, -0.2]) cube(size=[40, 40, 1]); translate([-20, -20, -0.2]) cube(size=[40, 40, 1]);
} }
} }
translate([-8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.4); translate([-8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.5);
translate([0, -8, -0.2]) cylinder($fn=32*2, h=10, r=2.4); translate([0, -8, -0.2]) cylinder($fn=32*2, h=10, r=2.5);
translate([0, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.4); translate([0, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.5);
translate([0, 8, -0.2]) cylinder($fn=32*2, h=10, r=2.4); translate([0, 8, -0.2]) cylinder($fn=32*2, h=10, r=2.5);
translate([8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.4); translate([8, 0, -0.2]) cylinder($fn=32*2, h=10, r=2.5);
} }
} }
@ -383,7 +345,7 @@ module planetary_ring_gear_with_clutch() {
rotate([0, 0, -135]) translate([-0.5, 10, -0.1]) cube(size=[1, 10, 10]); rotate([0, 0, -135]) translate([-0.5, 10, -0.1]) cube(size=[1, 10, 10]);
rotate([0, 0, 135]) translate([-0.5, 10, -0.1]) cube(size=[1, 10, 10]);*/ rotate([0, 0, 135]) translate([-0.5, 10, -0.1]) cube(size=[1, 10, 10]);*/
} }
translate([0, 0, -0.1]) cylinder($fn=100, h=10, r=2.4); translate([0, 0, -0.1]) cylinder($fn=100, h=10, r=2.5);
} }
translate([0, 0, 10.2]) union() { translate([0, 0, 10.2]) union() {
clutchTeeth(); clutchTeeth();
@ -433,15 +395,15 @@ module planetary_ring_gear(plane_height = 1) {
translate([8, 0, -0.1]) cylinder($fn=50, h=10, r=3.5); translate([8, 0, -0.1]) cylinder($fn=50, h=10, r=3.5);
translate([8, 8, -0.1]) cylinder($fn=50, h=10, r=3.5); translate([8, 8, -0.1]) cylinder($fn=50, h=10, r=3.5);
} }
translate([-8, -8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([-8, -8, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([-8, 0, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([-8, 0, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([-8, 8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([-8, 8, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([0, -8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([0, -8, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([0, 0, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([0, 0, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([0, 8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([0, 8, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([8, -8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([8, -8, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([8, 0, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([8, 0, -0.1]) cylinder($fn=50, h=10, r=2.5);
translate([8, 8, -0.1]) cylinder($fn=50, h=10, r=2.4); translate([8, 8, -0.1]) cylinder($fn=50, h=10, r=2.5);
} }
} }
} }
@ -461,9 +423,9 @@ module gear28_4holes() {
// from some solid part (like half or full beam) // from some solid part (like half or full beam)
module pinHole(height=8) { module pinHole(height=8) {
union() { union() {
translate([0, 0, -0.1]) cylinder($fs=0.5, h=height+0.2, r=2.4); translate([0, 0, -0.1]) cylinder($fs=0.5, h=height+0.2, r=2.5);
translate([0, 0, -0.1]) cylinder($fs=0.5, h=0.8+0.1, r=2.9); translate([0, 0, -0.1]) cylinder($fs=0.5, h=0.8+0.1, r=3);
translate([0, 0, height-0.8]) cylinder($fs=0.5, h=0.8+0.1, r=2.9); translate([0, 0, height-0.8]) cylinder($fs=0.5, h=0.8+0.1, r=3);
} }
} }
@ -513,7 +475,7 @@ module offsetClutchGear(number_of_teeth) {
translate([0, 0, 4.8]) cylinder($fn=100, h=4, r=3.3); translate([0, 0, 4.8]) cylinder($fn=100, h=4, r=3.3);
} }
// round hole // round hole
translate([0, 0, -3]) cylinder($fn=100, h=12, r=2.45); translate([0, 0, -3]) cylinder($fn=100, h=12, r=2.5);
// axle hole // axle hole
//axle(0, 0, -1, 10); //axle(0, 0, -1, 10);
} }
@ -529,7 +491,7 @@ module offsetClutchGear(number_of_teeth) {
// Axle // Axle
module axle(x, y, z, height) { module axle(x, y, z, height) {
axle_gap = 1.85; axle_gap = 1.85;
hole_radius = 2.4; hole_radius = 2.5;
union() { union() {
translate([x - hole_radius, y - axle_gap/2, z]) translate([x - hole_radius, y - axle_gap/2, z])
roundedRect([hole_radius * 2, axle_gap, height], .2); roundedRect([hole_radius * 2, axle_gap, height], .2);
@ -542,7 +504,7 @@ module axle(x, y, z, height) {
module axleCut(x, y, z, height) { module axleCut(x, y, z, height) {
axle_gap = 1.85; axle_gap = 1.85;
axle_gap_cut = 1.7; axle_gap_cut = 1.7;
hole_radius = 2.4; hole_radius = 2.5;
union() { union() {
translate([x - hole_radius, y - axle_gap/2, z]) translate([x - hole_radius, y - axle_gap/2, z])
roundedRect([hole_radius * 2, axle_gap, height], .2); roundedRect([hole_radius * 2, axle_gap, height], .2);