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Merge pull request #449 from revarbat/revarbat_dev

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Animated a couple involute_gears.scad examples.
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Revar Desmera 2021-02-28 15:45:50 -08:00 committed by GitHub
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1 changed files with 59 additions and 19 deletions
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involute_gears.scad
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@ -279,9 +279,14 @@ function _gear_q7(f,r,b,r2,t,s) = _gear_q6(b,s,t,(1-f)*max(b,r)+f*r2); //
// Example(2D): Metric Gear Tooth
// gear_tooth_profile(mod=2, teeth=20, pressure_angle=20);
// Example(2D):
// gear_tooth_profile(pitch=5, teeth=20, pressure_angle=20, valleys=false);
// gear_tooth_profile(
// pitch=5, teeth=20, pressure_angle=20, valleys=false
// );
// Example(2D): As a function
// stroke(gear_tooth_profile(pitch=5, teeth=20, pressure_angle=20, valleys=false), width=0.1);
// path = gear_tooth_profile(
// pitch=5, teeth=20, pressure_angle=20, valleys=false
// );
// stroke(path, width=0.1);
function gear_tooth_profile(
pitch = 3,
teeth = 11,
@ -612,27 +617,36 @@ module rack2d(
// Example: Metric Gear
// gear(mod=2, teeth=20, thickness=8, shaft_diam=5);
// Example: Helical Gear
// gear(pitch=5, teeth=20, thickness=10, shaft_diam=5, helical=-30, slices=12, $fa=1, $fs=1);
// Example(2D): Assembly of Gears
// gear(
// pitch=5, teeth=20, thickness=10,
// shaft_diam=5, helical=-30, slices=12,
// $fa=1, $fs=1
// );
// Example(Anim,Frames=8,VPT=[0,30,0],VPR=[0,0,0],VPD=300): Assembly of Gears
// n1 = 11; //red gear number of teeth
// n2 = 20; //green gear
// n3 = 5; //blue gear
// n4 = 20; //orange gear
// n5 = 8; //gray rack
// n4 = 16; //orange gear
// n5 = 9; //gray rack
// pitch = 9; //all meshing gears need the same `pitch` (and the same `pressure_angle`)
// thickness = 6;
// hole = 3;
// rack_base = 12;
// d1 =pitch_radius(pitch,n1);
// d12=pitch_radius(pitch,n1) + pitch_radius(pitch,n2);
// d13=pitch_radius(pitch,n1) + pitch_radius(pitch,n3);
// d14=pitch_radius(pitch,n1) + pitch_radius(pitch,n4);
// translate([ 0, 0, 0]) rotate([0,0, $t*360/n1]) color([1.00,0.75,0.75]) gear(pitch,n1,thickness,hole);
// translate([ 0, d12, 0]) rotate([0,0,-($t+n2/2-0*n1+1/2)*360/n2]) color([0.75,1.00,0.75]) gear(pitch,n2,thickness,hole);
// translate([ d13, 0, 0]) rotate([0,0,-($t-n3/4+n1/4+1/2)*360/n3]) color([0.75,0.75,1.00]) gear(pitch,n3,thickness,hole);
// translate([ d13, 0, 0]) rotate([0,0,-($t-n3/4+n1/4+1/2)*360/n3]) color([0.75,0.75,1.00]) gear(pitch,n3,thickness,hole);
// translate([-d14, 0, 0]) rotate([0,0,-($t-n4/4-n1/4+1/2-floor(n4/4)-3)*360/n4]) color([1.00,0.75,0.50]) gear(pitch,n4,thickness,hole,hide=n4-3);
// translate([(-floor(n5/2)-floor(n1/2)+$t+n1/2)*9, -d1+0.0, 0]) color([0.75,0.75,0.75]) rack(pitch=pitch,teeth=n5,thickness=thickness,height=rack_base,anchor=CENTER,orient=BACK);
// r1 = pitch_radius(pitch,n1);
// r2 = pitch_radius(pitch,n2);
// r3 = pitch_radius(pitch,n3);
// r4 = pitch_radius(pitch,n4);
// r5 = pitch_radius(pitch,n5);
// a1 = $t * 360 / n1;
// a2 = -$t * 360 / n2 + 180/n2;
// a3 = -$t * 360 / n3;
// a4 = -$t * 360 / n4 - 7.5*180/n4;
// color("#f77") zrot(a1) gear(pitch,n1,thickness,hole);
// color("#7f7") back(r1+r2) zrot(a2) gear(pitch,n2,thickness,hole);
// color("#77f") right(r1+r3) zrot(a3) gear(pitch,n3,thickness,hole);
// color("#fc7") left(r1+r4) zrot(a4) gear(pitch,n4,thickness,hole,hide=n4-3);
// color("#ccc") fwd(r1) right(pitch*$t)
// rack(pitch=pitch,teeth=n5,thickness=thickness,height=rack_base,anchor=CENTER,orient=BACK);
function gear(
pitch = 3,
teeth = 11,
@ -706,6 +720,7 @@ module gear(
backlash = backlash,
interior = interior
);
circle(d=shaft_diam+4);
}
if (shaft_diam > 0) {
cylinder(h=2*thickness+1, r=shaft_diam/2, center=true, $fn=max(12,segs(shaft_diam/2)));
@ -768,11 +783,36 @@ module gear(
// "pitchbase" = At the natural height of the pitch radius of the beveled gear.
// "flattop" = At the top of the flat top of the bevel gear.
// Example: Beveled Gear
// bevel_gear(pitch=5, teeth=36, face_width=10, shaft_diam=5, pitch_angle=45, spiral_angle=0);
// bevel_gear(
// pitch=5, teeth=36, face_width=10, shaft_diam=5,
// pitch_angle=45, spiral_angle=0
// );
// Example: Spiral Beveled Gear and Pinion
// t1 = 16; t2 = 28;
// bevel_gear(pitch=5, teeth=t1, mate_teeth=t2, slices=12, anchor="apex", orient=FWD);
// bevel_gear(pitch=5, teeth=t2, mate_teeth=t1, left_handed=true, slices=12, anchor="apex", spin=180/t2);
// bevel_gear(
// pitch=5, teeth=t1, mate_teeth=t2,
// slices=12, anchor="apex", orient=FWD
// );
// bevel_gear(
// pitch=5, teeth=t2, mate_teeth=t1, left_handed=true,
// slices=12, anchor="apex", spin=180/t2
// );
// Example(Anim,Frames=4,VPD=175): Manual Spacing of Pinion and Gear
// t1 = 14; t2 = 28; pitch=5;
// back(pitch_radius(pitch=pitch, teeth=t2)) {
// yrot($t*360/t1)
// bevel_gear(
// pitch=pitch, teeth=t1, mate_teeth=t2, shaft_diam=5,
// slices=12, orient=FWD
// );
// }
// down(pitch_radius(pitch=pitch, teeth=t1)) {
// zrot($t*360/t2)
// bevel_gear(
// pitch=pitch, teeth=t2, mate_teeth=t1, left_handed=true,
// shaft_diam=5, slices=12, spin=180/t2
// );
// }
function bevel_gear(
pitch = 5,
teeth = 20,