thequux/film-scanner
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Ran openscad-format over everything

Browse Source
This commit is contained in:
TQ Hirsch
2022-03-03 14:14:37 +01:00
parent a7119fd012
commit ceca63b8d2
5 changed files with 290 additions and 371 deletions
Download Patch File Download Diff File Expand all files Collapse all files

115
stock_parts.scad
View File

@@ -1,5 +1,5 @@
include <MCAD/math.scad>;
include <lib.scad>;
include <MCAD/math.scad>
include <lib.scad>
stock_color = "#aaa4";
@@ -18,128 +18,111 @@ module colorize(colorname) {
}
module bushing() {
bom_item(printable=false, label="Bushing");
bom_item(printable = false, label = "Bushing");
colorize(stock_color) render() {
difference() {
cylinder(d = bushing_od, h = bushing_len);
translate([0,0,-1])
cylinder(d = bushing_id, h = bushing_len + 2);
translate([ 0, 0, -1 ]) cylinder(d = bushing_id, h = bushing_len + 2);
}
}
}
// located with the shaft in +z, face on the XY plane
// located with the shaft in +z, face on the XY plane
module nema17(depth = 23.5) {
bom_item(printable=false, label="NEMA-17 stepper motor");
bom_item(printable = false, label = "NEMA-17 stepper motor");
face = 42.3;
screw_pitch = 31 / 2;
color(stock_color)
render()
difference() {
color(stock_color) render() difference() {
union() {
translate([-face/2, -face/2, -depth])
cube([face, face, depth]);
translate([0,0,-1]) {
cylinder(d=22, h=2+1);
cylinder(d=5, h=22+1);
translate([ -face / 2, -face / 2, -depth ]) cube([ face, face, depth ]);
translate([ 0, 0, -1 ]) {
cylinder(d = 22, h = 2 + 1);
cylinder(d = 5, h = 22 + 1);
}
}
translate([1.25, -5, 4])
cube([10, 10, 20]);
translate([ 1.25, -5, 4 ]) cube([ 10, 10, 20 ]);
// screw holes
for (x = [-screw_pitch, screw_pitch],
y = [-screw_pitch, screw_pitch]) {
translate([x,y,-10])
cylinder(d=5,h=20);
for (x = [ -screw_pitch, screw_pitch ], y = [ -screw_pitch, screw_pitch ]) {
translate([ x, y, -10 ]) cylinder(d = 5, h = 20);
}
}
}
// belts and pulleys
belt_pitch = 2; // 2mm tooth width for GT2 = 2mm pitch
belt_width = 6;
belt_thickness = 1.38;
belt_pld = 0.254; // distance between line of fixed length and tips of gear teeth
belt_pld =
0.254; // distance between line of fixed length and tips of gear teeth
belt_backing = 0.63 - belt_pld;
tooth_height = 0.75;
pulley_od = 13;
pulley_clearance_rad = pulley_od / 2 + 2.5;
module pulley(teeth, lrim, urim, belt_width, shaft=5, toothed=true, od = 0) {
bom_item(printable=false, label=str(
toothed ? "pulley(" : "idler(",
"teeth=", teeth, ", ",
"flange1=", min(lrim, urim), "mm, ",
"flange2=", max(lrim, urim), "mm, ",
"channel=", belt_width, "mm, ",
"shaft=", shaft, "mm",
")"
));
module pulley(teeth, lrim, urim, belt_width, shaft = 5, toothed = true,
od = 0) {
bom_item(printable = false,
label = str(toothed ? "pulley(" : "idler(", "teeth=", teeth, ", ",
"flange1=", min(lrim, urim), "mm, ", "flange2=",
max(lrim, urim), "mm, ", "channel=", belt_width, "mm, ",
"shaft=", shaft, "mm", ")"));
nominal_rad = belt_pitch * teeth / TAU;
inner_rad = nominal_rad - belt_pld;
outer_rad = (od > 0) ? od / 2 : nominal_rad + belt_backing;
outer_rad = (od > 0) ? od / 2 : nominal_rad + belt_backing;
minor_rad = inner_rad - tooth_height;
mid_rad = inner_rad - tooth_height / 2;
idler_rad = nominal_rad - belt_backing;
dtheta = 180 / teeth;
tooth_points = [
for (i = [1:1:teeth])
let (theta = i * 360 / teeth)
each [
[sin(theta) * minor_rad, cos(theta) * minor_rad],
[sin(theta) * inner_rad, cos(theta) * inner_rad],
[sin(theta + dtheta) * inner_rad, cos(theta + dtheta) * inner_rad],
[sin(theta + dtheta) * minor_rad, cos(theta + dtheta) * minor_rad]
]
];
tooth_points = [for (i = [1:1:teeth]) let(theta = i * 360 / teeth) each
[[sin(theta) * minor_rad, cos(theta) * minor_rad],
[sin(theta) * inner_rad, cos(theta) * inner_rad],
[sin(theta + dtheta) * inner_rad, cos(theta + dtheta) * inner_rad],
[sin(theta + dtheta) * minor_rad, cos(theta + dtheta) * minor_rad]]];
//echo([each [0:1:teeth]]);
// echo([each [0:1:teeth]]);
//echo(tooth_points);
// echo(tooth_points);
colorize(stock_color)
render()
difference() {
colorize(stock_color) render() difference() {
union() {
cylinder(r=outer_rad, h=lrim);
translate([0,0,lrim])
if (toothed) {
cylinder(r = outer_rad, h = lrim);
translate([ 0, 0, lrim ]) if (toothed) {
linear_extrude(belt_width)
polygon(tooth_points, convexity = teeth * 2 + 4);
} else {
polygon(tooth_points, convexity = teeth * 2 + 4);
}
else {
cylinder(r = idler_rad, h = belt_width);
}
translate([0,0,lrim + belt_width])
cylinder(r=outer_rad, h=urim);
translate([ 0, 0, lrim + belt_width ]) cylinder(r = outer_rad, h = urim);
}
translate([0,0,-1])
cylinder(d=shaft, h=belt_width + lrim + urim + 2);
translate([ 0, 0, -1 ])
cylinder(d = shaft, h = belt_width + lrim + urim + 2);
}
}
idler_zmargin = [ 6.4 / 2 + 1.05, 6.4 / 2 + 1.05 ];
module idler(height=0, toothed=false) {
module idler(height = 0, toothed = false) {
// pulley(20, 1.05, 1.05, 6.4, toothed=toothed, od=18);
translate([0,0, height-idler_zmargin[0]])
pulley(16, 1.05, 1.05, 6.4, shaft=3, toothed=toothed, od=13);
translate([ 0, 0, height - idler_zmargin[0] ])
pulley(16, 1.05, 1.05, 6.4, shaft = 3, toothed = toothed, od = 13);
}
active_pulley_zmargin = [ 9.5, 4.5 ];
module active_pulley(height=0) {
translate([0,0,-active_pulley_zmargin[0] + height])
pulley(16,6,1,7, od=13);
module active_pulley(height = 0) {
translate([ 0, 0, -active_pulley_zmargin[0] + height ])
pulley(16, 6, 1, 7, od = 13);
}
// required distance between centers of pulley and idler for an S-bend with right angles.
// required distance between centers of pulley and idler for an S-bend with
// right angles.
pulley_sbend_offset = (9.5 + 9.7) / 2 + 0.63;
//!pulley(12, 6, 2, toothed=false);
//! pulley(12, 6, 2, toothed=false);