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First draft of reinforced sprocket wheel.

This commit is contained in:
Matt McWilliams 2023-04-03 17:05:05 -04:00
parent d9e65f5ba1
commit 40d67a786f
1 changed files with 59 additions and 12 deletions
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71
scad/16mm_sprocketed_roller_var.scad
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@ -23,7 +23,8 @@ TopD = 21.66;
TopC = (TopD * PI) / 8; TopC = (TopD * PI) / 8;
TopH = 1.4; TopH = 1.4;
motorShaftD = 6;
motorShaftHobble = 0.8;
echo(FrameC); echo(FrameC);
@ -43,7 +44,16 @@ module sprocket (pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) {
} }
} }
module sprocketed_roller_body (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) { module sprocketed_roller_top_sprockets (pos = [0, 0, 0], rot = [0, 0, 0], sprockets = 8, D, bevel = false) {
translate(pos) rotate(rot) {
cylinder(r = R(D), h = SprocketBaseH, center = true);
for (i = [0: sprockets]) {
rotate([0, 0, i * 360 / sprockets]) sprocket([(D / 2) - .01, 0, (SprocketBaseH / 2) - (SprocketL / 2)], [0, 90, 0], bevel);
}
}
}
module sprocketed_roller_body (pos = [0, 0, 0], rot = [0, 0, 0], sprockets = 8, bevel = false, reinforced = false) {
D = (FrameC * sprockets) / PI; D = (FrameC * sprockets) / PI;
LipD = (LipC * sprockets) / PI; LipD = (LipC * sprockets) / PI;
TopD = (TopC * sprockets) / PI; TopD = (TopC * sprockets) / PI;
@ -56,7 +66,13 @@ module sprocketed_roller_body (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0],
translate(pos) rotate(rot) { translate(pos) rotate(rot) {
//top //top
cylinder(r = R(D), h = SprocketBaseH, center = true); if (!reinforced) {
sprocketed_roller_top_sprockets(sprockets = sprockets, D = D, bevel = bevel);
} else {
ReinforcedRegistration = (InnerD - 5) / 2;
cube([ReinforcedRegistration + 5, ReinforcedRegistration, SprocketBaseH], center = true);
cube([ReinforcedRegistration, ReinforcedRegistration + 5, SprocketBaseH], center = true);
}
//center //center
translate([0, 0, (InnerH / 2) + (SprocketBaseH / 2)]) { translate([0, 0, (InnerH / 2) + (SprocketBaseH / 2)]) {
@ -77,24 +93,44 @@ module sprocketed_roller_body (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0],
translate([0, 0, (TopBaseH / 2) + InnerH + (SprocketBaseH / 2)]) { translate([0, 0, (TopBaseH / 2) + InnerH + (SprocketBaseH / 2)]) {
cylinder(r = R(TopBaseD), h = TopBaseH, center = true); cylinder(r = R(TopBaseD), h = TopBaseH, center = true);
} }
for (i = [0: sprockets]) {
rotate([0, 0, i * 360 / sprockets]) sprocket([(D / 2) - .01, 0, (SprocketBaseH / 2) - (SprocketL / 2)], [0, 90, 0], bevel);
}
} }
} }
module sprocketed_roller (sprockets = 8, pos = [0, 0, 0], rot = [0, 0, 0], bevel = false) { module sprocketed_roller (pos = [0, 0, 0], rot = [0, 0, 0], sprockets = 8, bevel = false, reinforced = false, model = "") {
D = (FrameC * sprockets) / PI;
difference () { difference () {
union () { union () {
sprocketed_roller_body(sprockets, pos, rot, bevel); sprocketed_roller_body(pos = pos, rot = rot, sprockets = sprockets, bevel = bevel, reinforced = reinforced);
//translate(pos) rotate(rot) addition(); //translate(pos) rotate(rot) addition();
} }
//translate(pos) rotate(rot) void(); if (model == "gearbox_motor") {
translate(pos) rotate(rot) translate([0, 0, 10]) gearbox_motor_shaft_void();
translate(pos) rotate(rot) m3_nut_void(pos=[D/4, 0, 8.5], rot = [90, 0, 90], H = D/2);
}
} }
} }
module bearing_laser (x, y, z, width= 8, hole = true) { module sprocketed_roller_reinforced(pos = [0, 0, 0], rot = [0, 0, 0], sprockets = 8, bevel = true, model = "") {
D = (FrameC * sprockets) / PI;
difference () {
sprocketed_roller_top_sprockets (pos = pos, rot = rot, sprockets = sprockets, D = D, bevel = bevel);
scale([1.01, 1.01, 1]) sprocketed_roller (pos = pos, rot = rot, sprockets = sprockets, bevel = bevel, reinforced = true, model = model);
}
}
module gearbox_motor_shaft (H = 16, pad = 0) {
difference () {
cylinder(r = R(motorShaftD) + pad, h = H, center = true, $fn = 60);
translate([motorShaftD - motorShaftHobble + pad, 0, 0]) cube([motorShaftD, motorShaftD, H + 1], center = true);
}
}
module gearbox_motor_shaft_void (H = 16) {
pad = 0.2;
gearbox_motor_shaft(H, pad);
}
module bearing_laser_void (x, y, z, width= 8, hole = true) {
innerD = 8.05; innerD = 8.05;
outerD = 22.1 - .4; outerD = 22.1 - .4;
fuzz = 0.3; fuzz = 0.3;
@ -108,4 +144,15 @@ module bearing_laser (x, y, z, width= 8, hole = true) {
} }
} }
sprocketed_roller(sprockets = 24, bevel = true); module m3_nut_void (pos = [0, 0, 0], rot = [0, 0, 0], H = 20) {
translate(pos) rotate(rot) {
translate([0, 6, -4.25 + (2.75/2)]) cube([6, 12, 2.75], center = true);
cylinder(r = R(3.25), h = H, center = true, $fn = 30);
translate([0, 0, -4.25]) hex(R(6), 2.75);
translate([0, 0, (H/2)-4.5]) cylinder(r = R(6), h = 5, center = true, $fn = 40);
}
}
//sprocketed_roller(sprockets = 18, bevel = false, model = "gearbox_motor", reinforced = true);
color("red") sprocketed_roller_reinforced(sprockets = 18, bevel = false, model = "gearbox_motor");