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Ran openscad-format over everything

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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
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90
assembly.scad
View File

@@ -1,43 +1,37 @@
include <constants.scad>;
include <parts.scad>;
include <constants.scad>
include <parts.scad>
csize = 15;
module frame() {
translate([corner_offset, 0, 0])
rotate([0, 90, 0])
tslot(xsize - 2 * corner_offset);
translate([ corner_offset, 0, 0 ]) rotate([ 0, 90, 0 ])
tslot(xsize - 2 * corner_offset);
translate([0, corner_offset, 0])
rotate([-90, 0, 0])
tslot(ysize - 2*corner_offset);
translate([ 0, corner_offset, 0 ]) rotate([ -90, 0, 0 ])
tslot(ysize - 2 * corner_offset);
translate([corner_offset, ysize, 0])
rotate([0, 90, 0])
tslot(xsize - 2*corner_offset);
translate([ corner_offset, ysize, 0 ]) rotate([ 0, 90, 0 ])
tslot(xsize - 2 * corner_offset);
translate([xsize, corner_offset, 0])
rotate([-90, 0, 0])
tslot(ysize - 2*corner_offset);
translate([ xsize, corner_offset, 0 ]) rotate([ -90, 0, 0 ])
tslot(ysize - 2 * corner_offset);
}
module corners() {
translate([0,0]) flcorner();
translate([xsize, 0, 0]) frcorner();
translate([xsize, ysize, 0]) brcorner();
translate([0, ysize, 0]) blcorner();
translate([ 0, 0 ]) flcorner();
translate([ xsize, 0, 0 ]) frcorner();
translate([ xsize, ysize, 0 ]) brcorner();
translate([ 0, ysize, 0 ]) blcorner();
}
module rails() {
frame_offset = yrail_offset;
colorize(stock_color)
{
for (xpos = [frame_offset, xsize - frame_offset]) {
colorize(stock_color) {
for (xpos = [ frame_offset, xsize - frame_offset ]) {
rail_len = ysize - corner_offset * 2;
bom_item(printable=false, label = str("steel_bar(d=8mm, len=", rail_len, "mm)"));
translate([xpos,
frame_size / 2 + wall_thickness])
rotate([-90, 0, 0])
cylinder(d = rail_diam, h = ysize - corner_offset * 2);
bom_item(printable = false,
label = str("steel_bar(d=8mm, len=", rail_len, "mm)"));
translate([ xpos, frame_size / 2 + wall_thickness ]) rotate([ -90, 0, 0 ])
cylinder(d = rail_diam, h = ysize - corner_offset * 2);
}
}
}
@@ -45,45 +39,39 @@ module rails() {
module ysled_rails() {
yoff = ysled_rail_spacing / 2;
rail_len = xsize - frame_size - yrail_offset * 2;
colorize(stock_color)
for (ypos = [-yoff, yoff]) {
bom_item(printable=false, label = str("steel_bar(d=8mm, len=", rail_len, "mm)"));
translate([frame_size / 2, ypos, 0])
rotate([0, 90, 0])
cylinder(d = rail_diam, h = rail_len);
colorize(stock_color) for (ypos = [ -yoff, yoff ]) {
bom_item(printable = false,
label = str("steel_bar(d=8mm, len=", rail_len, "mm)"));
translate([ frame_size / 2, ypos, 0 ]) rotate([ 0, 90, 0 ])
cylinder(d = rail_diam, h = rail_len);
}
}
module xsled() {
xdiff = sled_xsize / 2 + frame_size / 2;
translate([0, 0, frame_size])
xsled_frame();
translate([ 0, 0, frame_size ]) xsled_frame();
}
module moving_parts(xpos = cur_xpos, ypos = cur_ypos) {
translate([yrail_offset, cur_ypos, 0])
ysled_slider(spread = sled_ysize);
translate([xsize - yrail_offset, cur_ypos, 0])
rotate([180, 180, 0])
ysled_slider(spread = sled_ysize);
translate([yrail_offset, cur_ypos, 0])
if($preview) ysled_rails();
translate([cur_xpos, cur_ypos, 0]) {
// xsled();
translate([ yrail_offset, cur_ypos, 0 ]) ysled_slider(spread = sled_ysize);
translate([ xsize - yrail_offset, cur_ypos, 0 ]) rotate([ 180, 180, 0 ])
ysled_slider(spread = sled_ysize);
translate([ yrail_offset, cur_ypos, 0 ]) if ($preview) ysled_rails();
translate([ cur_xpos, cur_ypos, 0 ]) {
// xsled();
xsled2();
}
}
union() {
if($preview) frame();
if($preview) rails();
if ($preview)
frame();
if ($preview)
rails();
corners();
moving_parts();
}

2
constants.scad
View File

@@ -12,7 +12,7 @@ cur_xpos = 155;
// 140..260
cur_ypos = 140;
echo(str("Range = ", [ xsize - xmin * 2, ysize - ymin*2 ]));
echo(str("Range = ", [ xsize - xmin * 2, ysize - ymin * 2 ]));
$fs = 1.5;
$include_substock = true;

6
lib.scad
View File

@@ -1,5 +1,5 @@
module bom_item(printable = true, label = "") {
print_label = printable ? " print " : " stock ";
item_label = label == "" ? parent_module(1) : label;
echo(str("BOM:", print_label, item_label));
print_label = printable ? " print " : " stock ";
item_label = label == "" ? parent_module(1) : label;
echo(str("BOM:", print_label, item_label));
}

448
parts.scad
View File

@@ -1,11 +1,11 @@
include <units.inc>;
include <lib.scad>;
include <constants.scad>;
include <stock_parts.scad>;
include <constants.scad>
include <lib.scad>
include <stock_parts.scad>
include <units.inc>
frame_size = 20;
wall_thickness = 2;
corner_size=30;
corner_size = 30;
// The length along each edge that the corner bracket takes. I.e., if
// you construct a frame of four corner brackets and 4 tubes of length
// $L-$corner_size, the distance between opposite tubes' centerlines
@@ -26,63 +26,59 @@ belt_height2 = belt_height1 + belt_width + 2;
ysled_rail_spacing = (sled_ysize);
motor_shaft_xoffset = (corner_size - wall_thickness) / 2;
// Generates bar of length $l, centered on origin extending in +Z
module tslot(l) {
bom_item(printable=false, label = str("tslot(", l, "mm)"));
bom_item(printable = false, label = str("tslot(", l, "mm)"));
colorize(stock_color) {
translate([-frame_size/2, -frame_size/2, 0])
cube([frame_size, frame_size, l]);
translate([ -frame_size / 2, -frame_size / 2, 0 ])
cube([ frame_size, frame_size, l ]);
}
}
// A corner, with tubes extending in +x and +y.
module corner_base() {
odim = frame_size/2 + wall_thickness;
ldim = frame_size/2 + corner_size;
cap_points = [[-odim, -odim],
[-odim, ldim],
[ odim, ldim],
[ ldim, odim],
[ ldim, -odim]];
odim = frame_size / 2 + wall_thickness;
ldim = frame_size / 2 + corner_size;
cap_points = [
[ -odim, -odim ], [ -odim, ldim ], [ odim, ldim ], [ ldim, odim ],
[ ldim, -odim ]
];
difference() {
translate([0, 0, -odim])
linear_extrude(odim * 2)
polygon(points = cap_points);
translate([ 0, 0, -odim ]) linear_extrude(odim * 2)
polygon(points = cap_points);
// two bars...
translate([-frame_size/2, corner_offset, -frame_size/2])
cube([frame_size, ldim, frame_size]);
translate([corner_offset, -frame_size/2, -frame_size/2])
cube([ldim, frame_size, frame_size]);
translate([corner_offset, corner_offset, -frame_size/2])
cube([ldim, ldim, frame_size]);
//translate([-odim - 1, -odim - 1, 0])
//cube(ldim*2);
translate([ -frame_size / 2, corner_offset, -frame_size / 2 ])
cube([ frame_size, ldim, frame_size ]);
translate([ corner_offset, -frame_size / 2, -frame_size / 2 ])
cube([ ldim, frame_size, frame_size ]);
translate([ corner_offset, corner_offset, -frame_size / 2 ])
cube([ ldim, ldim, frame_size ]);
// translate([-odim - 1, -odim - 1, 0])
// cube(ldim*2);
}
}
module rail_holder(in_x) {
odim = frame_size/2 + wall_thickness;
ldim = frame_size/2 + corner_size;
odim = frame_size / 2 + wall_thickness;
ldim = frame_size / 2 + corner_size;
tube_offset = (corner_size) / 2 + wall_thickness;
tube_rotation = in_x ? 90 : 0;
translated_rail_offset = yrail_offset - frame_size / 2;
translate([frame_size/2, frame_size/2, -frame_size/2]) {
translate([ frame_size / 2, frame_size / 2, -frame_size / 2 ]) {
difference() {
linear_extrude(frame_size)
polygon(points = [[wall_thickness, wall_thickness],
[wall_thickness, corner_size],
[corner_size, wall_thickness]]);
polygon(points = [[wall_thickness, wall_thickness],
[wall_thickness, corner_size],
[corner_size, wall_thickness]]);
translate([translated_rail_offset, translated_rail_offset, frame_size/2])
rotate([tube_rotation -90, tube_rotation, 0])
translate([0, 0, -corner_size])
cylinder(d = rail_diam, corner_size * 4);
translate(
[ translated_rail_offset, translated_rail_offset, frame_size / 2 ])
rotate([ tube_rotation - 90, tube_rotation, 0 ])
translate([ 0, 0, -corner_size ])
cylinder(d = rail_diam, corner_size * 4);
}
}
}
@@ -93,59 +89,52 @@ module ysled_slider(spread, associated_parts = $preview) {
sled_len = spread + frame_size;
sled_height = frame_size;
idler_spacing = spread / 3;
colorize("green")
render()
translate([0, -sled_len/2, 0])
rotate([-90, 0, 0]) {
colorize("green") render() translate([ 0, -sled_len / 2, 0 ])
rotate([ -90, 0, 0 ]) {
difference() {
union() {
translate([-frame_size/2, -frame_size/2, 0])
cube([frame_size + 5, frame_size, sled_len]);
translate([pulley_sbend_offset - yrail_offset + motor_shaft_xoffset - pulley_clearance_rad - 4,
-frame_size / 2, 0])
cube([frame_size + 5, frame_size, sled_len]);
translate([ -frame_size / 2, -frame_size / 2, 0 ])
cube([ frame_size + 5, frame_size, sled_len ]);
translate([
pulley_sbend_offset - yrail_offset + motor_shaft_xoffset -
pulley_clearance_rad - 4,
-frame_size / 2, 0
]) cube([ frame_size + 5, frame_size, sled_len ]);
}
cylinder(d = bushing_id * 1.1, h = sled_len);
translate([0,0,-1])
cylinder(d = bushing_od, h = bushing_len+1);
translate([0,0,sled_len - bushing_len])
cylinder(d = bushing_od, h = bushing_len+1);
for (zpos = [frame_size / 2, sled_len - frame_size / 2]) {
translate([sled_height/2, 0, zpos])
rotate([0,90,0]) {
cylinder(h = sled_height + 1, d = rail_diam);
}
cylinder(d = bushing_id * 1.1, h = sled_len);
translate([ 0, 0, -1 ]) cylinder(d = bushing_od, h = bushing_len + 1);
translate([ 0, 0, sled_len - bushing_len ])
cylinder(d = bushing_od, h = bushing_len + 1);
for (zpos = [ frame_size / 2, sled_len - frame_size / 2 ]) {
translate([ sled_height / 2, 0, zpos ]) rotate([ 0, 90, 0 ]) {
cylinder(h = sled_height + 1, d = rail_diam);
}
}
}
}
// TODO: add posts for the idlers
//color("#f00")
translate([pulley_sbend_offset - yrail_offset + motor_shaft_xoffset, 0, 0]) {
translate([0, idler_spacing / 2, 0]) {
// color("#f00")
translate(
[ pulley_sbend_offset - yrail_offset + motor_shaft_xoffset, 0, 0 ]) {
translate([ 0, idler_spacing / 2, 0 ]) {
idler_post(belt_height = belt_height1);
}
translate([0, -idler_spacing / 2, 0]) {
*cylinder(d=3, h=30, $fs=1);
translate([ 0, -idler_spacing / 2, 0 ]) {
*cylinder(d = 3, h = 30, $fs = 1);
*idler(belt_height2);
rotate([0, 0, -90]) {
idler_post(belt_height = belt_height2);
}
rotate([ 0, 0, -90 ]) { idler_post(belt_height = belt_height2); }
}
}
translate([0, -sled_len/2, 0])
rotate([-90, 0, 0])
if (associated_parts) {
translate([ 0, -sled_len / 2, 0 ])
rotate([ -90, 0, 0 ]) if (associated_parts) {
bushing();
translate([0,0,sled_len - bushing_len]) bushing();
translate([ 0, 0, sled_len - bushing_len ]) bushing();
}
}
@@ -155,33 +144,26 @@ module nema17_housing() {
hdepth = frame_size + wall_thickness * 2;
screw_dxy = 31 / 2;
translate([0,
-nema17_face/2 - frame_size/2 - wall_thickness,
0])
render()
difference() {
cube([hwidth, hheight, hdepth],
center=true);
translate([ 0, -nema17_face / 2 - frame_size / 2 - wall_thickness, 0 ])
render() difference() {
cube([ hwidth, hheight, hdepth ], center = true);
translate([0,0,-2])
cube([nema17_face+1, nema17_face+1, hdepth],
center=true);
cylinder(d=23, frame_size);
translate([ 0, 0, -2 ])
cube([ nema17_face + 1, nema17_face + 1, hdepth ], center = true);
cylinder(d = 23, frame_size);
for (x = [-screw_dxy, screw_dxy],
y = [-screw_dxy, screw_dxy])
translate([x, y, frame_size/2 + wall_thickness])
rotate([180, 0, 0]){
cylinder(d=5,h=3);
for (x = [ -screw_dxy, screw_dxy ], y = [ -screw_dxy, screw_dxy ])
translate([ x, y, frame_size / 2 + wall_thickness ])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5, h = 3);
}
}
}
// belt height is the center of the belt.
// Roration is in Z axis, from +x/+y
module idler_post(belt_height, toothed=true) {
gap=0.5;
module idler_post(belt_height, toothed = true) {
gap = 0.5;
post_radius = pulley_clearance_rad + 4;
top_shelf_thickness = 4;
@@ -193,23 +175,22 @@ module idler_post(belt_height, toothed=true) {
union() {
// outer shell
cylinder(h = total_height, r = post_radius);
translate([0, -post_radius, 0])
cube([post_radius, post_radius, total_height]);
translate([-post_radius,0, 0])
cube([post_radius, post_radius, total_height]);
translate([ 0, -post_radius, 0 ])
cube([ post_radius, post_radius, total_height ]);
translate([ -post_radius, 0, 0 ])
cube([ post_radius, post_radius, total_height ]);
}
translate([0,0,belt_height - idler_zmargin.x - gap]) {
translate([ 0, 0, belt_height - idler_zmargin.x - gap ]) {
cylinder(r = slot_radius, slot_height);
translate([-slot_radius, 0, 0])
cube([post_radius*2, post_radius * 2, slot_height]);
translate([0, -slot_radius, 0])
cube([post_radius * 2, post_radius * 2, slot_height]);
translate([ -slot_radius, 0, 0 ])
cube([ post_radius * 2, post_radius * 2, slot_height ]);
translate([ 0, -slot_radius, 0 ])
cube([ post_radius * 2, post_radius * 2, slot_height ]);
}
cylinder(d = 3, h=total_height + 1, $fn=60);
translate([0, 0, total_height - 2])
cylinder(r = 3, h = 3);
cylinder(d = 3, h = total_height + 1, $fn = 60);
translate([ 0, 0, total_height - 2 ]) cylinder(r = 3, h = 3);
}
idler(height = belt_height);
@@ -217,49 +198,45 @@ module idler_post(belt_height, toothed=true) {
module flcorner() {
bom_item();
rotate([0, 0, 0]) {
rotate([ 0, 0, 0 ]) {
corner_base();
rail_holder(false);
}
translate([(corner_size-wall_thickness)/2, 0, 0])
nema17_housing();
if($preview)
translate([(corner_size - wall_thickness) / 2,
-nema17_face/2 - frame_size/2 - wall_thickness,
frame_size/2]) {
nema17();
translate([0, 0, -frame_size/2 + belt_height2]) {
active_pulley();
translate([ (corner_size - wall_thickness) / 2, 0, 0 ]) nema17_housing();
if ($preview)
translate([
(corner_size - wall_thickness) / 2,
-nema17_face / 2 - frame_size / 2 - wall_thickness, frame_size / 2
]) {
nema17();
translate([ 0, 0, -frame_size / 2 + belt_height2 ]) { active_pulley(); }
}
}
}
module frcorner() {
bom_item();
rotate([0, 0, 90]) {
rotate([ 0, 0, 90 ]) {
corner_base();
rail_holder(true);
}
translate([-(corner_size-wall_thickness)/2, 0, 0])
nema17_housing();
if($preview)
translate([-(corner_size - wall_thickness) / 2,
-nema17_face/2 - frame_size/2 - wall_thickness,
frame_size/2]) {
nema17();
translate([0,0,belt_height1 - frame_size / 2]) {
rotate([180,0,0])
active_pulley();
translate([ -(corner_size - wall_thickness) / 2, 0, 0 ]) nema17_housing();
if ($preview)
translate([
-(corner_size - wall_thickness) / 2,
-nema17_face / 2 - frame_size / 2 - wall_thickness, frame_size / 2
]) {
nema17();
translate([ 0, 0, belt_height1 - frame_size / 2 ]) {
rotate([ 180, 0, 0 ]) active_pulley();
}
}
}
}
module blcorner() {
bom_item();
rotate([0, 0, 270]) {
rotate([ 0, 0, 270 ]) {
corner_base();
rail_holder(true);
}
@@ -267,7 +244,7 @@ module blcorner() {
module brcorner() {
bom_item();
rotate([0, 0, 180]) {
rotate([ 0, 0, 180 ]) {
corner_base();
rail_holder(false);
}
@@ -277,84 +254,65 @@ module xsled_slider() {
slider_len = bushing_len + 10;
screw_tab_len = 20;
screw_tab_thickness = 10;
render()
//translate([screw_tab_len, 0, 0])
difference() {
// translate([screw_tab_len, 0, 0])
difference() {
union() {
rotate([0, 90, 0]) {
cylinder(d = frame_size, h = slider_len);
}
rotate([ 0, 90, 0 ]) { cylinder(d = frame_size, h = slider_len); }
translate([0, -frame_size/2, 0])
cube([slider_len, frame_size, frame_size / 2]);
translate([ 0, -frame_size / 2, 0 ])
cube([ slider_len, frame_size, frame_size / 2 ]);
*translate([-screw_tab_len, -frame_size/2, frame_size/2])
cube([screw_tab_len * 2 + slider_len, frame_size, screw_tab_thickness]);
*translate([ -screw_tab_len, -frame_size / 2, frame_size / 2 ]) cube(
[ screw_tab_len * 2 + slider_len, frame_size, screw_tab_thickness ]);
}
rotate([0, 90, 0]) {
rotate([ 0, 90, 0 ]) {
cylinder(d = bushing_od, h = bushing_len);
cylinder(d = rail_diam * 1.1, slider_len * 2);
}
}
if($preview)
rotate([0, 90, 0])
bushing();
if ($preview)
rotate([ 0, 90, 0 ]) bushing();
}
module sled_cornera() {
bom_item();
corner_base();
translate([-frame_size/2 - wall_thickness, 0, -frame_size])
xsled_slider();
translate([ -frame_size / 2 - wall_thickness, 0, -frame_size ])
xsled_slider();
}
module sled_cornerb() {
bom_item();
corner_base();
rotate([0,0,90])
translate([-frame_size/2 - wall_thickness, 0, -frame_size])
xsled_slider();
rotate([ 0, 0, 90 ])
translate([ -frame_size / 2 - wall_thickness, 0, -frame_size ])
xsled_slider();
}
module xsled_frame() {
translate([-sled_xsize / 2 + corner_offset, -ysled_rail_spacing/2, 0])
rotate([0, 90, 0])
tslot(sled_xsize - corner_offset * 2);
translate([-sled_xsize / 2 + corner_offset, ysled_rail_spacing/2, 0])
rotate([0, 90, 0])
tslot(sled_xsize - corner_offset * 2);
translate([-sled_xsize / 2, -ysled_rail_spacing/2 + corner_offset, 0])
rotate([-90, 0, 0])
tslot(sled_ysize - corner_offset * 2);
translate([sled_xsize / 2, -ysled_rail_spacing/2 + corner_offset, 0])
rotate([-90, 0, 0])
tslot(sled_ysize - corner_offset * 2);
translate([ -sled_xsize / 2 + corner_offset, -ysled_rail_spacing / 2, 0 ])
rotate([ 0, 90, 0 ]) tslot(sled_xsize - corner_offset * 2);
translate([ -sled_xsize / 2 + corner_offset, ysled_rail_spacing / 2, 0 ])
rotate([ 0, 90, 0 ]) tslot(sled_xsize - corner_offset * 2);
translate([ -sled_xsize / 2, -ysled_rail_spacing / 2 + corner_offset, 0 ])
rotate([ -90, 0, 0 ]) tslot(sled_ysize - corner_offset * 2);
translate([ sled_xsize / 2, -ysled_rail_spacing / 2 + corner_offset, 0 ])
rotate([ -90, 0, 0 ]) tslot(sled_ysize - corner_offset * 2);
translate([-sled_xsize / 2, -sled_ysize / 2, 0])
sled_cornera();
translate([sled_xsize / 2, sled_ysize / 2, 0])
rotate([0,0,180])
sled_cornera();
translate([sled_xsize / 2, -sled_ysize / 2, 0])
rotate([0,0,90])
sled_cornerb();
translate([-sled_xsize / 2, sled_ysize / 2, 0])
rotate([0,0,270])
sled_cornerb();
translate([ -sled_xsize / 2, -sled_ysize / 2, 0 ]) sled_cornera();
translate([ sled_xsize / 2, sled_ysize / 2, 0 ]) rotate([ 0, 0, 180 ])
sled_cornera();
translate([ sled_xsize / 2, -sled_ysize / 2, 0 ]) rotate([ 0, 0, 90 ])
sled_cornerb();
translate([ -sled_xsize / 2, sled_ysize / 2, 0 ]) rotate([ 0, 0, 270 ])
sled_cornerb();
// simulate a piece of film
if (false) {
color("#0008")
cube([
5*inch,
4*inch,
1
],
center=true);
color("#0008") cube([ 5 * inch, 4 * inch, 1 ], center = true);
}
}
@@ -371,34 +329,28 @@ module xsled2() {
lip_width = glass_thickness;
glass_holder_points = [
[0,0],
[lip_depth + wall_thickness, 0],
[lip_depth + wall_thickness, wall_thickness + 0.5],
[lip_depth, wall_thickness + 0.5],
[lip_depth, wall_thickness + glass_thickness],
[lip_depth - glass_thickness, wall_thickness + glass_thickness],
[lip_depth - glass_thickness, wall_thickness + glass_thickness*2],
[0, tab_thickness]
[ 0, 0 ], [ lip_depth + wall_thickness, 0 ],
[ lip_depth + wall_thickness, wall_thickness + 0.5 ],
[ lip_depth, wall_thickness + 0.5 ],
[ lip_depth, wall_thickness + glass_thickness ],
[ lip_depth - glass_thickness, wall_thickness + glass_thickness ],
[ lip_depth - glass_thickness, wall_thickness + glass_thickness * 2 ],
[ 0, tab_thickness ]
];
for (xsign = [1,-1],
ysign = [1,-1]) {
translate([sled_xsize / 2 * xsign,
sled_ysize / 2 * ysign,
0])
rotate([0, -90 * xsign, 0]) {
for (xsign = [ 1, -1 ], ysign = [ 1, -1 ]) {
translate([ sled_xsize / 2 * xsign, sled_ysize / 2 * ysign, 0 ])
rotate([ 0, -90 * xsign, 0 ]) {
difference() {
union() {
cylinder(d = tab_thickness, h = tab_len);
translate([-tab_thickness/2,
ysign > 0 ? -tab_thickness/2: 0,
0])
cube([tab_thickness, tab_thickness/2, tab_len]);
translate(
[ -tab_thickness / 2, ysign > 0 ? -tab_thickness / 2 : 0, 0 ])
cube([ tab_thickness, tab_thickness / 2, tab_len ]);
}
translate([0,0,-0.5]) {
cylinder(d = bushing_od, h = bushing_len+0.5);
cylinder(d = rail_diam * 1.1 , h = tab_len + 1);
translate([ 0, 0, -0.5 ]) {
cylinder(d = bushing_od, h = bushing_len + 0.5);
cylinder(d = rail_diam * 1.1, h = tab_len + 1);
}
}
if ($preview) {
@@ -406,59 +358,55 @@ module xsled2() {
}
}
//cube([sled_xsize, inner_ysize, tab_thickness/2], center=true);
// cube([sled_xsize, inner_ysize, tab_thickness/2], center=true);
difference() {
union() {
translate([-sled_xsize/2, -inner_ysize/2, -tab_thickness/2])
rotate([0, 90, 0])
rotate([0,0,90])
linear_extrude(sled_xsize)
polygon(glass_holder_points);
translate([ -sled_xsize / 2, -inner_ysize / 2, -tab_thickness / 2 ])
rotate([ 0, 90, 0 ]) rotate([ 0, 0, 90 ]) linear_extrude(sled_xsize)
polygon(glass_holder_points);
translate([sled_xsize/2, inner_ysize/2, -tab_thickness/2])
rotate([0, 90, 180])
rotate([0,0,90])
linear_extrude(sled_xsize)
polygon(glass_holder_points);
translate([ sled_xsize / 2, inner_ysize / 2, -tab_thickness / 2 ])
rotate([ 0, 90, 180 ]) rotate([ 0, 0, 90 ])
linear_extrude(sled_xsize) polygon(glass_holder_points);
translate([sled_xsize/2, -inner_ysize/2, -tab_thickness/2])
rotate([0, 90, 90])
rotate([0,0,90])
linear_extrude(inner_ysize)
polygon(glass_holder_points);
translate([ sled_xsize / 2, -inner_ysize / 2, -tab_thickness / 2 ])
rotate([ 0, 90, 90 ]) rotate([ 0, 0, 90 ])
linear_extrude(inner_ysize) polygon(glass_holder_points);
translate([-sled_xsize/2, inner_ysize/2, -tab_thickness/2])
rotate([0, 90, -90])
rotate([0,0,90])
linear_extrude(inner_ysize)
polygon(glass_holder_points);
translate([ -sled_xsize / 2, inner_ysize / 2, -tab_thickness / 2 ])
rotate([ 0, 90, -90 ]) rotate([ 0, 0, 90 ])
linear_extrude(inner_ysize) polygon(glass_holder_points);
}
translate([-10, inner_ysize/2 - 1 - lip_depth + glass_thickness, -tab_thickness/2 + wall_thickness + glass_thickness])
cube([20, glass_thickness + 1, 30]);
translate([
-10, inner_ysize / 2 - 1 - lip_depth + glass_thickness,
-tab_thickness / 2 + wall_thickness +
glass_thickness
]) cube([ 20, glass_thickness + 1, 30 ]);
}
}
color("#fff3")
if ($preview) {
color("#fff3") if ($preview) {
// draw glass sheets
translate([0,0,-tab_thickness/2 + wall_thickness + glass_thickness/2])
cube([sled_xsize - lip_depth*2, inner_ysize - lip_depth*2, glass_thickness],
center=true);
translate([0,0,-tab_thickness/2 + wall_thickness + 3*glass_thickness/2])
cube(
[
sled_xsize - lip_depth*2 + glass_thickness*2,
inner_ysize - lip_depth*2 + glass_thickness*2,
glass_thickness
],
center=true);
translate(
[ 0, 0, -tab_thickness / 2 + wall_thickness + glass_thickness / 2 ])
cube(
[
sled_xsize - lip_depth * 2, inner_ysize - lip_depth * 2,
glass_thickness
],
center = true);
translate(
[ 0, 0, -tab_thickness / 2 + wall_thickness + 3 * glass_thickness / 2 ])
cube(
[
sled_xsize - lip_depth * 2 + glass_thickness * 2,
inner_ysize - lip_depth * 2 + glass_thickness * 2,
glass_thickness
],
center = true);
}
}
// render()
// xsled2();

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);