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Added lifter lock nuts. Tweaked acme threaded rod thread profile.

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This commit is contained in:
Revar Desmera
2015-07-10 11:32:13 -07:00
parent 9edb61f9b2
commit 2097f24188
28 changed files with 118703 additions and 92391 deletions
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62314
STLs/cable_chain_link_parts.stl
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STLs/cable_chain_mount_parts.stl
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STLs/drive_gear_parts.stl
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STLs/extruder_platform_parts.stl
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STLs/fan_shroud_parts.stl
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STLs/lifter_lock_nut_parts.stl Normal file
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STLs/lifter_rod_coupler_parts.stl
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STLs/motherboard_mount_parts.stl
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@@ -11661,20 +11675,6 @@ solid OpenSCAD_Model
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@@ -13005,6 +13005,20 @@ solid OpenSCAD_Model
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@@ -16253,90 +16337,6 @@ solid OpenSCAD_Model
vertex 22.1897 -60.5 1
endloop
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@@ -16813,60 +16729,88 @@ solid OpenSCAD_Model
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STLs/motor_mount_plate_parts.stl
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STLs/platform_support_parts.stl
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STLs/rail_endcap_parts.stl
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STLs/rail_xy_motor_segment_parts.stl
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STLs/rail_z_motor_segment_parts.stl
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STLs/sled_endcap_parts.stl
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STLs/slop_calibrator_parts.stl
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STLs/xy_sled_parts.stl
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acme_screw.scad
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@@ -7,23 +7,25 @@ use <GDMUtils.scad>
module acme_threaded_rod(
d=10.5,
l=100,
threading=3.175,
thread_depth=1
pitch=3.175,
thread_depth=1,
thread_angle=29
) {
astep = 360/segs(d/2);
asteps = ceil(360/astep);
threads = ceil(l/threading)+2;
threads = ceil(l/pitch)+2;
pa_delta = (thread_depth*1.25)*sin(thread_angle)/2;
poly_points = [
for (
thread = [0 : threads-1],
astep = [0 : asteps-1],
i = [0 : 3]
) let (
r = max(0, d/2 - ((i==1||i==2)? 0 : (thread_depth+1))),
r = max(0, d/2 - ((i==1||i==2)? 0 : (thread_depth*1.25))),
a = astep / asteps,
rx = r * cos(360 * a),
ry = r * sin(360 * a),
tz = (thread + a - threads/2 + (i<2? -0.25 : 0.25)) * threading
tz = (thread + a - threads/2 + (i<2? -0.25 : 0.25)) * pitch + (i%2==0? -pa_delta : pa_delta)
) [rx, ry, tz]
];
point_count = len(poly_points);
@@ -52,26 +54,26 @@ module acme_threaded_rod(
intersection() {
union() {
polyhedron(points=poly_points, faces=poly_faces, convexity=10);
cylinder(h=(threads+0.5)*threading, d=d-2*thread_depth, center=true);
cylinder(h=(threads+0.5)*pitch, d=d-2*thread_depth, center=true);
}
cube([d+1, d+1, l], center=true);
}
}
//!acme_threaded_rod(d=20, l=20, threading=10, thread_depth=5);
//!acme_threaded_rod(d=3/8*25.4, l=20, pitch=1/8*25.4, thread_depth=1.3, thread_angle=29, $fn=32);
module acme_threaded_nut(
od=17.4,
id=10.5,
h=10,
threading=3.175,
pitch=3.175,
thread_depth=1,
slop=printer_slop
) {
difference() {
cylinder(r=od/2/cos(30), h=h, center=true, $fn=6);
zspread(slop) {
acme_threaded_rod(d=id+2*slop, l=h+1, threading=threading, thread_depth=thread_depth);
acme_threaded_rod(d=id+2*slop, l=h+1, pitch=pitch, thread_depth=thread_depth);
}
}
}

3
config.scad
View File

@@ -40,8 +40,7 @@ motor_shaft_flatted = true; // Is motor shaft keyed? (RECOMMENDED)
// Currently configured for 3/8" ACME threaded rod.
lifter_rod_diam = 9.5; // mm
lifter_rod_length = 300.0; // mm
lifter_thread_size = 3.175; // mm lift per revolution
lifter_thread_depth = 1.25; // mm
lifter_rod_pitch = 3.175; // mm lift per revolution
/*
// Mechanical endstop boards.

17
full_assembly.scad
View File

@@ -11,6 +11,7 @@ use <drive_gear_parts.scad>
use <extruder_platform_parts.scad>
use <fan_shroud_parts.scad>
use <lifter_rod_coupler_parts.scad>
use <lifter_lock_nut_parts.scad>
use <motor_mount_plate_parts.scad>
use <motherboard_mount_parts.scad>
use <platform_support_parts.scad>
@@ -148,18 +149,23 @@ module z_motor_segment_assembly(slidepos=0, explode=0, arrows=false)
zrot(90) motor_mount_plate();
up(motor_length/2-0.1) {
down(explode) nema17_stepper(h=motor_length, shaft_len=motor_shaft_length);
zrot(slidepos/lifter_thread_size*360.0) {
zrot(slidepos/lifter_rod_pitch*360.0) {
up(motor_shaft_length+explode) {
color("darkgrey") {
lifter_rod_coupler();
}
up(lifter_rod_length/2+explode) {
color("grey") {
up(30/2+10/2+explode) {
zrot(180) lifter_lock_nut();
}
}
up(lifter_rod_length/2+2*explode) {
color("silver") {
acme_threaded_rod(
d=lifter_rod_diam,
l=lifter_rod_length,
threading=lifter_thread_size,
thread_depth=lifter_thread_depth,
pitch=lifter_rod_pitch,
thread_depth=lifter_rod_pitch/2,
$fn=32
);
}
@@ -182,6 +188,9 @@ module z_motor_segment_assembly(slidepos=0, explode=0, arrows=false)
yrot(-90) arrow(size=explode/3);
up(30+explode) {
yrot(-90) arrow(size=explode/3);
up(explode) {
yrot(-90) arrow(size=explode/3);
}
}
}
}

36
lifter_lock_nut_parts.scad Normal file
View File

@@ -0,0 +1,36 @@
include <config.scad>
use <GDMUtils.scad>
use <acme_screw.scad>
$fa = 1;
$fs = 1;
module lifter_lock_nut()
{
height = 10;
diam = ceil(lifter_rod_diam/5+2)*5;
color("SpringGreen")
difference () {
cylinder(h=height, d=diam, center=true, $fn=6);
acme_threaded_rod(
d=lifter_rod_diam+2*printer_slop,
l=height+0.1,
pitch=lifter_rod_pitch,
thread_depth=lifter_rod_pitch/4
);
}
}
//!lifter_lock_nut();
module lifter_lock_nut_parts() { // make me
yspread(30) up(10/2) lifter_lock_nut();
}
lifter_lock_nut_parts();
// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap

4
lifter_rod_coupler_parts.scad
View File

@@ -27,8 +27,8 @@ module lifter_rod_coupler()
acme_threaded_rod(
d=lifter_rod_diam+2*printer_slop,
l=height/2+0.1,
threading=lifter_thread_size,
thread_depth=0.3,
pitch=lifter_rod_pitch,
thread_depth=lifter_rod_pitch/4,
$fn=32
);
}

2
wiki

Submodule wiki updated: 190ea3faee...22d1f1d2e8

6
z_sled_parts.scad
View File

@@ -93,9 +93,9 @@ module z_sled()
xrot(90) zrot(90) {
acme_threaded_rod(
d=lifter_rod_diam+2*printer_slop,
l=lifter_block_size+0.5+2*lifter_thread_size,
threading=lifter_thread_size,
thread_depth=lifter_thread_depth-printer_slop,
l=lifter_block_size+0.5+2*lifter_rod_pitch,
pitch=lifter_rod_pitch,
thread_depth=lifter_rod_pitch/2,
$fn=32
);
}