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Code Issues Releases Wiki Activity

moved the corner_3d_connector over to the extrusion brackets

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Alex Verschoot
2025-07-19 15:57:09 +02:00
parent 89c4b96525
commit 018f70ae3c
6 changed files with 389 additions and 471 deletions
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55
tests/corner_3d_connectors.scad
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@@ -1,55 +0,0 @@
//
// NopSCADlib Copyright Chris Palmer 2021
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
include <../vitamins/corner_3d_connectors.scad>
include <../vitamins/extrusions.scad>
module corner_connector(with_profiles = false, corner_connector_type, extrusion_type) {
extrusion_length = 40;
corner_3d_connector(corner_connector_type, grub_screws=true);
if(with_profiles){
translate([0,0,extrusion_length/2])
extrusion(extrusion_type, extrusion_length);
translate(corner_3d_connector_get_y_offset(corner_connector_type))
rotate(corner_3d_connector_get_y_rot(corner_connector_type))
translate([0,0,extrusion_length/2])
extrusion(extrusion_type, extrusion_length);
translate(corner_3d_connector_get_x_offset(corner_connector_type))
rotate(corner_3d_connector_get_x_rot(corner_connector_type))
translate([0,0,extrusion_length/2])
extrusion(extrusion_type, extrusion_length);
}
}
module corner_connectors(with_profiles = false) {
corner_connector(with_profiles, corner_3d_connector_2020, E2020);
translate([100,0,0])
corner_connector(with_profiles, corner_3d_connector_3030, E3030);
translate([220,0,0])
corner_connector(with_profiles, corner_3d_connector_4040, E4040);
}
$show_threads=false;
corner_connectors();
translate ([0,100,0])
corner_connectors(true);

167
tests/extrusion_brackets.scad
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@@ -24,76 +24,109 @@ include <../vitamins/washers.scad>
include <../vitamins/nuts.scad>
module inner_bracket_test(bracket, backwards = false)
rotate([90, 0, 180]) {
extrusion = extrusion_inner_corner_bracket_extrusion(bracket);
eWidth = extrusion_width(extrusion);
size = extrusion_inner_corner_bracket_size(bracket);
tnut = extrusion_inner_corner_bracket_tnut(bracket);
rotate([90, 0, 180]) {
extrusion = extrusion_inner_corner_bracket_extrusion(bracket);
eWidth = extrusion_width(extrusion);
size = extrusion_inner_corner_bracket_size(bracket);
tnut = extrusion_inner_corner_bracket_tnut(bracket);
translate([backwards ? -eWidth : 0, 0])
extrusion_inner_corner_bracket(bracket, backwards = backwards);
translate([backwards ? -eWidth : 0, 0])
extrusion_inner_corner_bracket(bracket, backwards=backwards);
translate([-eWidth / 2, 0])
rotate([-90, 0, 0])
extrusion(extrusion, size.x - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
translate([-eWidth / 2, 0])
rotate([-90, 0, 0])
extrusion(extrusion, size.x - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole=eWidth > 20);
translate([-eWidth, -eWidth / 2])
rotate([0, 90, 0])
extrusion(extrusion, eWidth + size.y - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole = eWidth > 20);
}
translate([-eWidth, -eWidth / 2])
rotate([0, 90, 0])
extrusion(extrusion, eWidth + size.y - nut_thickness(tnut) - extrusion_tab_thickness(extrusion), false, cornerHole=eWidth > 20);
}
module bracket_test(bracket)
rotate([90, 0, 180]) {
extrusion = extrusion_corner_bracket_extrusion(bracket);
eWidth = extrusion_width(extrusion);
size = extrusion_corner_bracket_size(bracket);
extrusion_corner_bracket_assembly(bracket);
translate([-eWidth / 2, 0])
rotate([-90, 0, 0])
extrusion(extrusion, size.y, false, cornerHole = eWidth > 20);
translate([-eWidth, -eWidth / 2])
rotate([0, 90, 0])
extrusion(extrusion, eWidth + size.x, false, cornerHole = eWidth > 20);
}
module extrusion_brackets(examples = false) {
extrusion_inner_corner_bracket(E20_inner_corner_bracket);
translate([30, 0])
extrusion_inner_corner_bracket(E20_inner_corner_bracket, grub_screws = false);
translate([60, 0])
extrusion_corner_bracket_assembly(E20_corner_bracket);
translate([110, 0])
extrusion_inner_corner_bracket(E40_inner_corner_bracket);
translate([140, 0])
extrusion_corner_bracket_assembly(E40_corner_bracket);
if(examples) {
translate([20, 50, 10])
inner_bracket_test(E20_inner_corner_bracket, true);
translate([20, 80, 10])
inner_bracket_test(E20_inner_corner_bracket);
translate([20, 120, 10])
bracket_test(E20_corner_bracket);
translate([100, 70, 10])
inner_bracket_test(E40_inner_corner_bracket);
translate([100, 130, 10])
bracket_test(E40_corner_bracket);
}
module corner_3d_connector(with_profiles = false, corner_connector_type, extrusion_type) {
extrusion_length = 40;
extrusion_corner_bracket_3D(corner_connector_type, grub_screws=true);
if (with_profiles) {
translate([0, 0, extrusion_length / 2])
extrusion(extrusion_type, extrusion_length);
translate(extrusion_corner_bracket_3D_get_y_offset(corner_connector_type))
rotate(extrusion_corner_bracket_3D_get_y_rot(corner_connector_type))
translate([0, 0, extrusion_length / 2])
extrusion(extrusion_type, extrusion_length);
translate(extrusion_corner_bracket_3D_get_x_offset(corner_connector_type))
rotate(extrusion_corner_bracket_3D_get_x_rot(corner_connector_type))
translate([0, 0, extrusion_length / 2])
extrusion(extrusion_type, extrusion_length);
}
}
if($preview)
let($show_threads = true)
extrusion_brackets(true);
module corner_3d_connectors(with_profiles = false) {
corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_2020, E2020);
translate([80, 0, 0])
corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_3030, E3030);
translate([180, 0, 0])
corner_3d_connector(with_profiles, extrusion_corner_bracket_3D_4040, E4040);
}
module bracket_test(bracket)
rotate([90, 0, 180]) {
extrusion = extrusion_corner_bracket_extrusion(bracket);
eWidth = extrusion_width(extrusion);
size = extrusion_corner_bracket_size(bracket);
extrusion_corner_bracket_assembly(bracket);
translate([-eWidth / 2, 0])
rotate([-90, 0, 0])
extrusion(extrusion, size.y, false, cornerHole=eWidth > 20);
translate([-eWidth, -eWidth / 2])
rotate([0, 90, 0])
extrusion(extrusion, eWidth + size.x, false, cornerHole=eWidth > 20);
}
module extrusion_brackets(examples = false) {
extrusion_inner_corner_bracket(E20_inner_corner_bracket);
translate([30, 0])
extrusion_inner_corner_bracket(E20_inner_corner_bracket, grub_screws=false);
translate([60, 0])
extrusion_corner_bracket_assembly(E20_corner_bracket);
translate([110, 0])
extrusion_inner_corner_bracket(E40_inner_corner_bracket);
translate([140, 0])
extrusion_corner_bracket_assembly(E40_corner_bracket);
if (examples) {
translate([20, 50, 10])
inner_bracket_test(E20_inner_corner_bracket, true);
translate([20, 80, 10])
inner_bracket_test(E20_inner_corner_bracket);
translate([20, 120, 10])
bracket_test(E20_corner_bracket);
translate([100, 70, 10])
inner_bracket_test(E40_inner_corner_bracket);
translate([100, 130, 10])
bracket_test(E40_corner_bracket);
}
//the 3d connectors
translate([0, -30, 0])
corner_3d_connectors();
if (examples) {
translate([0, -110, 0])
corner_3d_connectors(true);
}
}
if ($preview)
let ($show_threads = true)
extrusion_brackets(true);

187
vitamins/corner_3d_connector.scad
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@@ -1,187 +0,0 @@
//
// NopSCADlib Copyright Chris Palmer 2021
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
//
//! Default is steel but can be drawn as brass or nylon. A utility for making nut traps included.
//!
//! 3D corner connector with t-nut
//!
//! The following diagram shows you the parameters for the nut parameters:
//!
//! ![](docs/sliding_t_nut.png)
//
include <NopSCADlib/core.scad>
include <../utils/thread.scad>
//include <NopSCADlib/vitamins/screws.scad>
function corner_3d_connector_outer_side_length(type) = type[1]; //! The length of the base cuboid sides
function corner_3d_connector_outer_height(type) = type[2]; //! The height of the cuboid
function corner_3d_connector_inner_side_length(type)= type[3]; //! The length of the dip in the cuboid sides
function corner_3d_connector_inner_height(type) = type[4]; //! The depth offset of the dip in the cuboid
function corner_3d_connector_nut_screw(type) = type[5]; //! The screw (most likely Mx_grub_screw from <NopSCADlib/vitamins/screws.scad>)
function corner_3d_connector_nut_dia(type) = type[6]; //! The width of bottom part of the nut
function corner_3d_connector_nut_thickness(type) = type[7]; //! The thickness of the top part of the nut
function corner_3d_connector_nut_nyloc_thickness(type) = type[8]; //! The total thickness of the nut
function corner_3d_connector_nut_sx(type) = type[9]; //! The length of the nuts
function corner_3d_connector_nut_ty1(type) = type[10]; //! The total width of the nut
function corner_3d_connector_nut_ty2(type) = type[11]; //! The width of the top edge of the nut
function corner_3d_connector_nut_screws_hor(type) = type[12]; //! The positions of the screw holes on the horizontal arms, expressed in %/100 of the nut arm
function corner_3d_connector_nut_screws_ver(type) = type[13]; //! The positions of the screw holes on the vertical arms, expressed in %/100 of the nut arm
function corner_3d_connector_get_y_offset(type) = [0,-corner_3d_connector_outer_side_length(type)/2,corner_3d_connector_nut_nyloc_thickness(type)]; //! helper function to position the y beam
function corner_3d_connector_get_y_rot(type) = [90,0,0]; //! helper function to rotate the y beam
function corner_3d_connector_get_x_offset(type) = [corner_3d_connector_outer_side_length(type)/2,0,corner_3d_connector_nut_nyloc_thickness(type)]; //! helper function to position the x beam
function corner_3d_connector_get_x_rot(type) = [0,90,0]; //! helper function to rotate the y beam
module corner_3d_connector (type, grub_screws = true) { //! draw the specified corner_3d_connector
nut_screw_dia = screw_radius(corner_3d_connector_nut_screw(type)*2);
nut_dia = corner_3d_connector_nut_dia(type);
nut_thickness = corner_3d_connector_nut_thickness(type);
nut_nyloc_thickness = corner_3d_connector_nut_nyloc_thickness(type);
nut_sx = corner_3d_connector_nut_sx(type);
nut_ty1 = corner_3d_connector_nut_ty1(type);
nut_ty2= corner_3d_connector_nut_ty2(type);
nut_profile = [
[0, nut_dia/2],
[nut_nyloc_thickness-nut_thickness, nut_dia/2],
[nut_nyloc_thickness-nut_thickness, nut_ty1/2],
[nut_nyloc_thickness-nut_thickness + (nut_ty1-nut_ty2)/2, nut_ty1/2],
[nut_nyloc_thickness, nut_ty2/2],
[nut_nyloc_thickness, -nut_ty2/2],
[nut_nyloc_thickness-nut_thickness + (nut_ty1-nut_ty2)/2, -nut_ty1/2],
[nut_nyloc_thickness-nut_thickness, -nut_ty1/2],
[nut_nyloc_thickness-nut_thickness, -nut_dia/2],
[0, -nut_dia/2]
];
grub_screw = corner_3d_connector_nut_screw(type);
outer_side_length = corner_3d_connector_outer_side_length(type);
outer_height = corner_3d_connector_outer_height(type);
inner_side_length= corner_3d_connector_inner_side_length(type);
inner_height = corner_3d_connector_inner_height(type);
inner_offset_z = outer_height-inner_height+0.01;
//position the nuts on the base
positions_horizontal = [
[outer_side_length/2,0.001,0,0,270,90],
[outer_side_length-0.001,outer_side_length/2,0, 0,270,180]
];
positions_vertical = [
[0,outer_side_length/2,inner_offset_z,0,0,0],
[outer_side_length/2,outer_side_length,inner_offset_z,0,0,270],
];
//the radius of the base corners
r=1;
//offset so everything is centered for easy attachment to extrusion
translate([-outer_side_length/2,-outer_side_length/2, -outer_height]){
color("silver")
union() {
//create the base
difference () {
rounded_cube_xy([outer_side_length, outer_side_length, outer_height], r=r);
translate([(outer_side_length-inner_side_length)/2,(outer_side_length-inner_side_length)/2,inner_offset_z])
rounded_cube_xy([inner_side_length, inner_side_length, inner_height], r=r);
}
for (pos = positions_horizontal) {
translate([pos[0],pos[1],pos[2]])
rotate([pos[3],pos[4],pos[5]])
difference() {
linear_extrude(nut_sx, convexity =3 )
polygon(nut_profile);
//create the screw holes
for ( dist = corner_3d_connector_nut_screws_hor(type) ){
translate([-0.01,0,nut_sx*dist])
rotate([0,90,0])
difference() {
cylinder(h = nut_nyloc_thickness+0.02, d=nut_screw_dia, center = false);
if(show_threads ) {
female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center = false);
}
}
if(grub_screws) {
screw(grub_screw, nut_nyloc_thickness);
}
}
}
}
for (pos = positions_vertical) {
translate([pos[0],pos[1],pos[2]])
rotate([pos[3],pos[4],pos[5]]){
difference() {
linear_extrude(nut_sx, convexity =3)
polygon(nut_profile);
//create the screw holes
for ( dist = corner_3d_connector_nut_screws_ver(type) ){
translate([-0.01,0,nut_sx*dist])
rotate([0,90,0])
difference() {
cylinder(h = nut_nyloc_thickness+0.02, d=nut_screw_dia, center = false);
if(show_threads ) {
female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center = false);
}
}
}
}
}
}
}
if(grub_screws) {
for (pos = positions_horizontal) {
translate([pos[0],pos[1],pos[2]])
rotate([pos[3],pos[4],pos[5]]){
for ( dist = corner_3d_connector_nut_screws_hor(type) ){
translate([-0.01,0,nut_sx*dist])
rotate([180,90,0])
screw(grub_screw, nut_nyloc_thickness);
}
}
}
for (pos = positions_vertical) {
translate([pos[0],pos[1],pos[2]])
rotate([pos[3],pos[4],pos[5]]){
for ( dist = corner_3d_connector_nut_screws_ver(type) ){
translate([-0.01,0,nut_sx*dist])
rotate([180,90,0])
screw(grub_screw, nut_nyloc_thickness);
}
}
}
}
}
}

33
vitamins/corner_3d_connectors.scad
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@@ -1,33 +0,0 @@
//
// NopSCADlib Copyright Chris Palmer 2021
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
include <../core.scad>
include <screws.scad>
//sh is horizontal positions of the screw holes, expressed in %/100 of the nut arm
//sv is vertical positions of the screw holes, expressed in %/100 of the nut arm
// screw nd nt nnt nsx nty1 nty2 sh sv
corner_3d_connector_2020 = ["corner_3d_connector_2020", 20, 5, 13, 2.5, M4_grub_screw, 6, 3.5,5, 15.5,10, 6, [0.5], [0.5]];
corner_3d_connector_3030 = ["corner_3d_connector_3030", 29.6,6.2, 22, 2.5, M6_grub_screw, 8, 4.2,6.2,24.9,16, 11, [0.25,0.75], [0.65]];
corner_3d_connector_4040 = ["corner_3d_connector_4040", 40,9.5, 25, 2.5, M6_grub_screw, 8, 5, 9.5,34.0,19.5, 14, [0.25,0.75], [0.65]];
corner_3d_connectors = [corner_3d_connector_2020,corner_3d_connector_3030,corner_3d_connector_4040];
use <corner_3d_connector.scad>

400
vitamins/extrusion_bracket.scad
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@@ -20,151 +20,301 @@
//! Brackets for joining extrusions at a corner.
include <../core.scad>
include <../utils/thread.scad>
use <extrusion.scad>
function extrusion_inner_corner_bracket_size(type) = type[1]; //! Size of inner bracket
function extrusion_inner_corner_bracket_tnut(type) = type[2]; //! The sliding t-nut it is based on
function extrusion_inner_corner_bracket_extrusion(type) = type[3]; //! Default extrusion this bracket is for
function extrusion_inner_corner_bracket_screw_offsets(type) = type[4]; //! Screw offsets from the ends
function extrusion_inner_corner_bracket_size(type) = type[1]; //! Size of inner bracket
function extrusion_inner_corner_bracket_tnut(type) = type[2]; //! The sliding t-nut it is based on
function extrusion_inner_corner_bracket_extrusion(type) = type[3]; //! Default extrusion this bracket is for
function extrusion_inner_corner_bracket_screw_offsets(type) = type[4]; //! Screw offsets from the ends
module extrusion_inner_corner_bracket(type, grub_screws = true, backwards = false, extrusion = undef) { //! Inner corner bracket for extrusion
extrusion = is_undef(extrusion) ? extrusion_inner_corner_bracket_extrusion(type) : extrusion;
vitamin(str("extrusion_inner_corner_bracket(", type[0], "): Extrusion inner corner bracket for ", extrusion[0]));
module extrusion_inner_corner_bracket(type, grub_screws = true, backwards = false, extrusion = undef) { //! Inner corner bracket for extrusion
extrusion = is_undef(extrusion) ? extrusion_inner_corner_bracket_extrusion(type) : extrusion;
vitamin(str("extrusion_inner_corner_bracket(", type[0], "): Extrusion inner corner bracket for ", extrusion[0]));
size = extrusion_inner_corner_bracket_size(type);
tnut = extrusion_inner_corner_bracket_tnut(type);
screw_offsets = extrusion_inner_corner_bracket_screw_offsets(type);
bottomTabOffset = 4;
topTabOffset = 10;
sizeBottom = [size.y - bottomTabOffset, nut_square_width(tnut), size.z];
sizeTop = [size.x - topTabOffset, nut_square_width(tnut), size.z];
tab = t_nut_tab(tnut);
tabSizeZ = nut_thickness(tnut);
screw = find_screw(hs_grub, nut_size(tnut));
holeRadius = screw_pilot_hole(screw);
depth = (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2;
size = extrusion_inner_corner_bracket_size(type);
tnut = extrusion_inner_corner_bracket_tnut(type);
screw_offsets = extrusion_inner_corner_bracket_screw_offsets(type);
bottomTabOffset = 4;
topTabOffset = 10;
sizeBottom = [size.y - bottomTabOffset, nut_square_width(tnut), size.z];
sizeTop = [size.x - topTabOffset, nut_square_width(tnut), size.z];
tab = t_nut_tab(tnut);
tabSizeZ = nut_thickness(tnut);
screw = find_screw(hs_grub, nut_size(tnut));
holeRadius = screw_pilot_hole(screw);
depth = (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2;
offset = extrusion_tab_thickness(extrusion) + tabSizeZ;
offset2 = extrusion_tab_thickness(extrusion) - nut_thickness(tnut, true) + nut_thickness(tnut);
translate([backwards ? offset2 : -offset, -offset])
rotate([-90, 0, 0]) {
color("silver") {
translate([(size.y + bottomTabOffset) / 2, 0, tabSizeZ])
rotate([0, 180, 0])
extrusionSlidingNut(sizeBottom, tab[0], tab[1], tabSizeZ, holeRadius, (bottomTabOffset - size.y) / 2 + screw_offsets.y);
offset = extrusion_tab_thickness(extrusion) + tabSizeZ;
offset2 = extrusion_tab_thickness(extrusion) - nut_thickness(tnut, true) + nut_thickness(tnut);
translate([backwards ? offset2 : -offset, -offset])
rotate([-90, 0, 0]) {
color("silver") {
translate([(size.y + bottomTabOffset) / 2, 0, tabSizeZ])
rotate([0, 180, 0])
extrusionSlidingNut(sizeBottom, tab[0], tab[1], tabSizeZ, holeRadius, (bottomTabOffset - size.y) / 2 + screw_offsets.y);
translate([tabSizeZ, 0, (size.x + topTabOffset) / 2])
rotate([0, -90, 0])
extrusionSlidingNut(sizeTop, tab[0], tab[0], tabSizeZ, holeRadius, -(topTabOffset - size.x) / 2 - screw_offsets.x);
translate([tabSizeZ, 0, (size.x + topTabOffset) / 2])
rotate([0, -90, 0])
extrusionSlidingNut(sizeTop, tab[0], tab[0], tabSizeZ, holeRadius, -(topTabOffset - size.x) / 2 - screw_offsets.x);
translate([0, -tab[1] / 2]) {
cube([bottomTabOffset, tab[1], size.z]);
cube([size.z, tab[1], topTabOffset]);
}
}
if(grub_screws)
not_on_bom() no_explode() {
screw_len = screw_shorter_than(depth);
gap = depth - screw_len;
screw_z = offset - gap;
rotate([0, -90, 180])
if(backwards)
translate([size.x - screw_offsets.x, 0, -offset2 + gap])
vflip()
screw(screw, screw_len);
else
translate([size.x - screw_offsets.x, 0, screw_z])
screw(screw, screw_len);
translate([size.y - screw_offsets.y, 0, screw_z])
screw(screw, screw_len);
}
translate([0, -tab[1] / 2]) {
cube([bottomTabOffset, tab[1], size.z]);
cube([size.z, tab[1], topTabOffset]);
}
}
if (grub_screws)
not_on_bom() no_explode() {
screw_len = screw_shorter_than(depth);
gap = depth - screw_len;
screw_z = offset - gap;
rotate([0, -90, 180]) if (backwards)
translate([size.x - screw_offsets.x, 0, -offset2 + gap])
vflip()
screw(screw, screw_len);
else
translate([size.x - screw_offsets.x, 0, screw_z])
screw(screw, screw_len);
translate([size.y - screw_offsets.y, 0, screw_z])
screw(screw, screw_len);
}
}
}
function extrusion_corner_bracket_size(type) = type[1]; //! Size of bracket
function extrusion_corner_bracket_base_thickness(type) = type[2]; //! Thickness of base of bracket
function extrusion_corner_bracket_side_thickness(type) = type[3]; //! Thickness of side of bracket
function extrusion_corner_bracket_hole_offset(type) = type[4]; //! Hole offset from corner
function extrusion_corner_bracket_tnut(type) = type[5]; //! The sliding t-nut to use in the assembly
function extrusion_corner_bracket_extrusion(type) = type[6]; //! Default extrusion this bracket is for
function extrusion_corner_bracket_size(type) = type[1]; //! Size of bracket
function extrusion_corner_bracket_base_thickness(type) = type[2]; //! Thickness of base of bracket
function extrusion_corner_bracket_side_thickness(type) = type[3]; //! Thickness of side of bracket
function extrusion_corner_bracket_hole_offset(type) = type[4]; //! Hole offset from corner
function extrusion_corner_bracket_tnut(type) = type[5]; //! The sliding t-nut to use in the assembly
function extrusion_corner_bracket_extrusion(type) = type[6]; //! Default extrusion this bracket is for
module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z, "mm for ", extrusion_corner_bracket_extrusion(type)[0]));
module extrusion_corner_bracket(type) { //! Corner bracket for extrusion
vitamin(str("extrusion_corner_bracket(", type[0], "): Extrusion corner bracket ", type[1].z, "mm for ", extrusion_corner_bracket_extrusion(type)[0]));
eSize = extrusion_corner_bracket_size(type).z;
cbSize = extrusion_corner_bracket_size(type).x;
baseThickness = extrusion_corner_bracket_base_thickness(type);
hole_r = screw_clearance_radius(find_screw(hs_cap, nut_size(extrusion_corner_bracket_tnut(type))));
eSize = extrusion_corner_bracket_size(type).z;
cbSize = extrusion_corner_bracket_size(type).x;
baseThickness = extrusion_corner_bracket_base_thickness(type);
hole_r = screw_clearance_radius(find_screw(hs_cap, nut_size(extrusion_corner_bracket_tnut(type))));
module base() {
linear_extrude(baseThickness)
difference() {
translate([0, -eSize / 2])
square([cbSize, eSize]);
module base() {
linear_extrude(baseThickness)
difference() {
translate([0, -eSize / 2])
square([cbSize, eSize]);
hull() {
translate([extrusion_corner_bracket_hole_offset(type) + 1.5, 0])
circle(hole_r);
hull() {
translate([extrusion_corner_bracket_hole_offset(type) + 1.5, 0])
circle(hole_r);
translate([extrusion_corner_bracket_hole_offset(type) - 1.5, 0])
circle(hole_r);
}
}
translate([extrusion_corner_bracket_hole_offset(type) - 1.5, 0])
circle(hole_r);
}
}
}
color("silver") {
rotate([90, 0, 90])
base();
translate([0, baseThickness])
rotate([90, 0, 0])
base();
sideThickness = extrusion_corner_bracket_side_thickness(type);
for (z = [-eSize / 2, eSize / 2 - sideThickness]) {
translate_z(z) {
right_triangle(cbSize, cbSize, sideThickness, center=false);
cube([5, cbSize, sideThickness]);
cube([cbSize, 5, sideThickness]);
}
}
}
}
color("silver") {
rotate([90, 0, 90])
base();
module extrusion_corner_bracket_hole_positions(type) {
//! Place children at hole positions
for (angle = [[0, 90, 0], [-90, -90, 0]])
rotate(angle)
translate([0, extrusion_corner_bracket_hole_offset(type), extrusion_corner_bracket_base_thickness(type)])
children();
}
translate([0, baseThickness])
rotate([90, 0, 0])
base();
module extrusion_corner_bracket_assembly(type, part_thickness = undef, screw_type = undef, nut_type = undef, max_screw_depth = undef, extrusion = undef) { //! Assembly with fasteners in place
extrusion_corner_bracket(type);
extrusion = is_undef(extrusion) ? extrusion_corner_bracket_extrusion(type) : extrusion;
sideThickness = extrusion_corner_bracket_side_thickness(type);
for(z = [-eSize / 2, eSize / 2 - sideThickness]) {
translate_z(z) {
right_triangle(cbSize, cbSize, sideThickness, center = false);
cube([5, cbSize, sideThickness]);
cube([cbSize, 5, sideThickness]);
nut = is_undef(nut_type) ? extrusion_corner_bracket_tnut(type) : nut_type;
screw = is_undef(screw_type) ? find_screw(hs_cap, nut_size(nut)) : screw_type;
thickness = is_undef(part_thickness) ? extrusion_tab_thickness(extrusion) : part_thickness;
depth = is_undef(max_screw_depth) ? (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2 - eps : max_screw_depth;
screw_washer_thickness = washer_thickness(screw_washer(screw));
nut_washer_type = nut_washer(nut);
nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
nut_offset = extrusion_corner_bracket_base_thickness(type) + thickness;
screw_length =
depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + depth)
: screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut));
extrusion_corner_bracket_hole_positions(type) {
screw_and_washer(screw, screw_length);
translate_z(-nut_offset)
vflip() if (nut_washer_type)
nut_and_washer(nut);
else
rotate(90)
sliding_t_nut(nut);
}
}
function extrusion_corner_bracket_3D_outer_side_length(type) = type[1]; //! The length of the base cuboid sides
function extrusion_corner_bracket_3D_outer_height(type) = type[2]; //! The height of the cuboid
function extrusion_corner_bracket_3D_inner_side_length(type) = type[3]; //! The length of the dip in the cuboid sides
function extrusion_corner_bracket_3D_inner_height(type) = type[4]; //! The depth offset of the dip in the cuboid
function extrusion_corner_bracket_3D_nut_screw(type) = type[5]; //! The screw (most likely Mx_grub_screw from <NopSCADlib/vitamins/screws.scad>)
function extrusion_corner_bracket_3D_nut_dia(type) = type[6]; //! The width of bottom part of the nut
function extrusion_corner_bracket_3D_nut_thickness(type) = type[7]; //! The thickness of the top part of the nut
function extrusion_corner_bracket_3D_nut_nyloc_thickness(type) = type[8]; //! The total thickness of the nut
function extrusion_corner_bracket_3D_nut_sx(type) = type[9]; //! The length of the nuts
function extrusion_corner_bracket_3D_nut_ty1(type) = type[10]; //! The total width of the nut
function extrusion_corner_bracket_3D_nut_ty2(type) = type[11]; //! The width of the top edge of the nut
function extrusion_corner_bracket_3D_nut_screws_hor(type) = type[12]; //! The positions of the screw holes on the horizontal arms, expressed in %/100 of the nut arm
function extrusion_corner_bracket_3D_nut_screws_ver(type) = type[13]; //! The positions of the screw holes on the vertical arms, expressed in %/100 of the nut arm
function extrusion_corner_bracket_3D_get_y_offset(type) = [0, -extrusion_corner_bracket_3D_outer_side_length(type) / 2, extrusion_corner_bracket_3D_nut_nyloc_thickness(type)]; //! helper function to position the y beam
function extrusion_corner_bracket_3D_get_y_rot(type) = [90, 0, 0]; //! helper function to rotate the y beam
function extrusion_corner_bracket_3D_get_x_offset(type) = [extrusion_corner_bracket_3D_outer_side_length(type) / 2, 0, extrusion_corner_bracket_3D_nut_nyloc_thickness(type)]; //! helper function to position the x beam
function extrusion_corner_bracket_3D_get_x_rot(type) = [0, 90, 0]; //! helper function to rotate the y beam
module extrusion_corner_bracket_3D(type, grub_screws = true) { //! draw the specified extrusion_corner_bracket_3D
vitamin(str("extrusion_corner_bracket_3D(", type[0], "): Extrusion corner bracket 3D mm for ", extrusion_corner_bracket_extrusion(type)[0]));
nut_screw_dia = screw_radius(extrusion_corner_bracket_3D_nut_screw(type) * 2);
nut_dia = extrusion_corner_bracket_3D_nut_dia(type);
nut_thickness = extrusion_corner_bracket_3D_nut_thickness(type);
nut_nyloc_thickness = extrusion_corner_bracket_3D_nut_nyloc_thickness(type);
nut_sx = extrusion_corner_bracket_3D_nut_sx(type);
nut_ty1 = extrusion_corner_bracket_3D_nut_ty1(type);
nut_ty2 = extrusion_corner_bracket_3D_nut_ty2(type);
nut_profile = [
[0, nut_dia / 2],
[nut_nyloc_thickness - nut_thickness, nut_dia / 2],
[nut_nyloc_thickness - nut_thickness, nut_ty1 / 2],
[nut_nyloc_thickness - nut_thickness + (nut_ty1 - nut_ty2) / 2, nut_ty1 / 2],
[nut_nyloc_thickness, nut_ty2 / 2],
[nut_nyloc_thickness, -nut_ty2 / 2],
[nut_nyloc_thickness - nut_thickness + (nut_ty1 - nut_ty2) / 2, -nut_ty1 / 2],
[nut_nyloc_thickness - nut_thickness, -nut_ty1 / 2],
[nut_nyloc_thickness - nut_thickness, -nut_dia / 2],
[0, -nut_dia / 2],
];
grub_screw = extrusion_corner_bracket_3D_nut_screw(type);
outer_side_length = extrusion_corner_bracket_3D_outer_side_length(type);
outer_height = extrusion_corner_bracket_3D_outer_height(type);
inner_side_length = extrusion_corner_bracket_3D_inner_side_length(type);
inner_height = extrusion_corner_bracket_3D_inner_height(type);
inner_offset_z = outer_height - inner_height + 0.01;
//position the nuts on the base
positions_horizontal = [
[outer_side_length / 2, 0.001, 0, 0, 270, 90],
[outer_side_length - 0.001, outer_side_length / 2, 0, 0, 270, 180],
];
positions_vertical = [
[0, outer_side_length / 2, inner_offset_z, 0, 0, 0],
[outer_side_length / 2, outer_side_length, inner_offset_z, 0, 0, 270],
];
//the radius of the base corners
r = 1;
//offset so everything is centered for easy attachment to extrusion
translate([-outer_side_length / 2, -outer_side_length / 2, -outer_height]) {
color("silver")
union() {
//create the base
difference() {
rounded_cube_xy([outer_side_length, outer_side_length, outer_height], r=r);
translate([(outer_side_length - inner_side_length) / 2, (outer_side_length - inner_side_length) / 2, inner_offset_z])
rounded_cube_xy([inner_side_length, inner_side_length, inner_height], r=r);
}
for (pos = positions_horizontal) {
translate([pos[0], pos[1], pos[2]])
rotate([pos[3], pos[4], pos[5]])
difference() {
linear_extrude(nut_sx, convexity=3)
polygon(nut_profile);
//create the screw holes
for (dist = extrusion_corner_bracket_3D_nut_screws_hor(type)) {
translate([-0.01, 0, nut_sx * dist])
rotate([0, 90, 0])
difference() {
cylinder(h=nut_nyloc_thickness + 0.02, d=nut_screw_dia, center=false);
if (show_threads) {
female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center=false);
}
}
if (grub_screws) {
screw(grub_screw, nut_nyloc_thickness);
}
}
}
}
for (pos = positions_vertical) {
translate([pos[0], pos[1], pos[2]])
rotate([pos[3], pos[4], pos[5]]) {
difference() {
linear_extrude(nut_sx, convexity=3)
polygon(nut_profile);
//create the screw holes
for (dist = extrusion_corner_bracket_3D_nut_screws_ver(type)) {
translate([-0.01, 0, nut_sx * dist])
rotate([0, 90, 0])
difference() {
cylinder(h=nut_nyloc_thickness + 0.02, d=nut_screw_dia, center=false);
if (show_threads) {
female_metric_thread(nut_screw_dia, metric_coarse_pitch(nut_screw_dia), nut_nyloc_thickness, center=false);
}
}
}
}
}
}
}
if (grub_screws) {
for (pos = positions_horizontal) {
translate([pos[0], pos[1], pos[2]])
rotate([pos[3], pos[4], pos[5]]) {
for (dist = extrusion_corner_bracket_3D_nut_screws_hor(type)) {
translate([-0.01, 0, nut_sx * dist])
rotate([180, 90, 0])
screw(grub_screw, nut_nyloc_thickness);
}
}
}
for (pos = positions_vertical) {
translate([pos[0], pos[1], pos[2]])
rotate([pos[3], pos[4], pos[5]]) {
for (dist = extrusion_corner_bracket_3D_nut_screws_ver(type)) {
translate([-0.01, 0, nut_sx * dist])
rotate([180, 90, 0])
screw(grub_screw, nut_nyloc_thickness);
}
}
}
}
}
module extrusion_corner_bracket_hole_positions(type) { //! Place children at hole positions
for(angle = [ [0, 90, 0], [-90, -90, 0] ])
rotate(angle)
translate([0, extrusion_corner_bracket_hole_offset(type), extrusion_corner_bracket_base_thickness(type)])
children();
}
module extrusion_corner_bracket_assembly(type, part_thickness = undef, screw_type = undef, nut_type = undef, max_screw_depth = undef, extrusion = undef) { //! Assembly with fasteners in place
extrusion_corner_bracket(type);
extrusion = is_undef(extrusion) ? extrusion_corner_bracket_extrusion(type) : extrusion;
nut = is_undef(nut_type) ? extrusion_corner_bracket_tnut(type) : nut_type;
screw = is_undef(screw_type) ? find_screw(hs_cap, nut_size(nut)) : screw_type;
thickness = is_undef(part_thickness) ? extrusion_tab_thickness(extrusion) : part_thickness;
depth = is_undef(max_screw_depth) ? (extrusion_width(extrusion) - extrusion_center_square(extrusion)) / 2 - eps : max_screw_depth;
screw_washer_thickness = washer_thickness(screw_washer(screw));
nut_washer_type = nut_washer(nut);
nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
nut_offset = extrusion_corner_bracket_base_thickness(type) + thickness;
screw_length = depth ? screw_shorter_than(extrusion_corner_bracket_base_thickness(type) + screw_washer_thickness + depth)
: screw_longer_than(nut_offset + screw_washer_thickness + nut_washer_thickness + nut_thickness(nut));
extrusion_corner_bracket_hole_positions(type) {
screw_and_washer(screw, screw_length);
translate_z(-nut_offset)
vflip()
if(nut_washer_type)
nut_and_washer(nut);
else
rotate(90)
sliding_t_nut(nut);
}
}
}

18
vitamins/extrusion_brackets.scad
View File

@@ -19,12 +19,22 @@
//
// Extrusion brackets
//
include <../core.scad>
include <screws.scad>
E20_inner_corner_bracket = [ "E20_inner_corner_bracket", [26, 25, 4.7], M4_sliding_t_nut, E2020t, [7, 6]];
E40_inner_corner_bracket = [ "E40_inner_corner_bracket", [38, 31, 8.5], M6_sliding_t_nut, E4040t, [13, 10]];
E20_inner_corner_bracket = ["E20_inner_corner_bracket", [26, 25, 4.7], M4_sliding_t_nut, E2020t, [7, 6]];
E40_inner_corner_bracket = ["E40_inner_corner_bracket", [38, 31, 8.5], M6_sliding_t_nut, E4040t, [13, 10]];
E20_corner_bracket = [ "E20_corner_bracket", [28, 28, 20], 2, 3, 19.5, M4_sliding_t_nut, E2020t];
E40_corner_bracket = [ "E40_corner_bracket", [40, 40, 35], 2, 3, 19.5, M8_sliding_ball_t_nut, E4040t];
E20_corner_bracket = ["E20_corner_bracket", [28, 28, 20], 2, 3, 19.5, M4_sliding_t_nut, E2020t];
E40_corner_bracket = ["E40_corner_bracket", [40, 40, 35], 2, 3, 19.5, M8_sliding_ball_t_nut, E4040t];
//sh is horizontal positions of the screw holes, expressed in %/100 of the nut arm
//sv is vertical positions of the screw holes, expressed in %/100 of the nut arm
// screw nd nt nnt nsx nty1 nty2 sh sv
extrusion_corner_bracket_3D_2020 = ["extrusion_corner_bracket_3D_2020", 20, 5, 13, 2.5, M4_grub_screw, 6, 3.5, 5, 15.5, 10, 6, [0.5], [0.5]];
extrusion_corner_bracket_3D_3030 = ["extrusion_corner_bracket_3D_3030", 29.6, 6.2, 22, 2.5, M6_grub_screw, 8, 4.2, 6.2, 24.9, 16, 11, [0.25, 0.75], [0.65]];
extrusion_corner_bracket_3D_4040 = ["extrusion_corner_bracket_3D_4040", 40, 9.5, 25, 2.5, M6_grub_screw, 8, 5, 9.5, 34.0, 19.5, 14, [0.25, 0.75], [0.65]];
extrusion_corner_bracket_3Ds = [extrusion_corner_bracket_3D_2020, extrusion_corner_bracket_3D_3030, extrusion_corner_bracket_3D_4040];
use <extrusion_bracket.scad>