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Added T-Tracks and accessories

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This commit is contained in:
Jeroen Roos
2024-02-18 22:10:01 +01:00
parent a3b27a736e
commit f6404b939f
5 changed files with 409 additions and 7 deletions
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//
// NopSCADlib Copyright Chris Palmer 2018
// 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/>.
//
//! T-Tracks used in woodworking jigs
//
include <../utils/core/core.scad>
use <../utils/thread.scad>
use <screw.scad>
function ttrack_width(type) = type[1]; //! Width of track section
function ttrack_height(type) = type[2]; //! Height of track section
function ttrack_opening(type) = type[3]; //! Width of the opening
function ttrack_slot_width(type) = type[4]; //! Width of the slot
function ttrack_slot_height(type) = type[5]; //! Height of the slot
function ttrack_top_thickness(type) = type[6]; //! Thickness of the top layer
function ttrack_screw_pitch(type) = type[7]; //! Distance between screws
function ttrack_screw(type) = type[8]; //! Screw used to fasten track
function ttrack_fixture(type) = type[9]; //! Fixture, such as T-bolt or Miter insert used with this track
function tbolt_description(type) = type[1]; //! Description of this t-track bolt
function tbolt_head_length(type) = type[2]; //! Head length for t-track bolt
function tbolt_head_width(type) = type[3]; //! Head width for t-track bolt
function tbolt_head_thickness(type) = type[4]; //! Head thickness for t-track bolt
function tbolt_thread(type) = type[5]; //! M thread for this bolt
function t_insert_description(type) = type[1]; //! Description of this t-track insert
function t_insert_top_width(type) = type[2]; //! Top Width of t-track insert
function t_insert_width(type) = type[3]; //! Width of t-track insert
function t_insert_height(type) = type[4]; //! Height of t-track insert
function t_insert_top_thickness(type) = type[5]; //! Top thickness for t-track insert
function t_insert_thread(type) = type[6]; //! M thread for this the screw hole in this insert
function ttrack_holes(type, length) = //! Number of holes in a rail given its `length`
floor((length - 2 * ttrack_screw_end(type)) / ttrack_screw_pitch(type)) + 1;
module ttrack(type, length, colour = "LightSlateGray") { //! Draw the specified rail
W = ttrack_width(type);
H = ttrack_height(type);
SW = ttrack_slot_width(type);
SH = ttrack_slot_height(type);
T = ttrack_top_thickness(type);
O = ttrack_opening(type);
screw=ttrack_screw(type);
vit_colour = (colour == "LightSlateGray" ? "" : str(", colour=\"", colour, "\""));
vitamin(str("ttrack(", type[0], ", ", length, vit_colour, "): T-Track ", type[0], " x ", length, "mm"));
color(colour) {
difference() {
rotate([90,0,0])
linear_extrude(length, center=true, convexity = 3)
polygon([
[ -O/2, 0 ], // left side of the opening
[ -W/2, 0 ], // left top
[ -W/2, -H ], // left bottom
[ W/2, -H ], // right bottom
[ W/2, 0 ], // right top
[ O/2, 0 ], // right side of the opening
[ O/2, -T ], // right bottom side of the opening
[ SW/2, -T ], // right top of the slot
[ SW/2, -T - SH ], // right bottom of the slot
[ -SW/2,-T - SH ], // left bottom of the slot
[ -SW/2, -T ], // left top of the slot
[ -O/2, -T ] // left bottom side of the opening
]);
ttrack_hole_positions(type, length) {
B = H - (SH + T);
screw_countersink(screw, true);
translate_z(-B/2)
cylinder(r=screw_clearance_radius(screw), h=(H-(SH+T) + 0.2), center=true);
}
}
}
}
module ttrack_assembly(type, length, colour = "LightSlateGray") {
ttrack(type, length, colour);
ttrack_hole_positions(type, length)
explode(20)
screw(ttrack_screw(type), 15);
}
module ttrack_hole_positions(type, length) { //! Position children over screw holes
P = ttrack_screw_pitch(type);
H = ttrack_height(type);
B = H - (ttrack_slot_height(type) + ttrack_top_thickness(type));
count = floor(length / P);
first = (length - count * P)/2;
c = first < P/3 ? count - 1 : count; // we don't want screws right on the edge
N = (length - c * P)/2;
for (y = [N:P:length-N])
translate([0,length/2 - y, -H + B])
children();
}
module ttrack_place_bolt(type, pos, bolt = undef) { //! Place a T-Bolt relative to the centre of the track
bolt = is_undef(bolt) ? ttrack_fixture(type) : bolt;
T = tbolt_head_thickness(bolt);
translate([0,pos,-(ttrack_top_thickness(type)/2) - T])
rotate([0,0,90])
children();
}
module ttrack_place_insert(type, pos, insert = undef) { //! Place a T-Insert relative to the centre of the track
insert = is_undef(insert) ? ttrack_fixture(type) : insert;
TT = t_insert_top_thickness(insert);
T = ttrack_top_thickness(type);
translate([0,pos,-T+TT])
rotate([0,0,90])
children();
}
module ttrack_bolt(type, length) {
L = tbolt_head_length(type);
W = tbolt_head_width(type);
T = tbolt_head_thickness(type);
distance = L - W;
D = tbolt_thread(type);
pitch = metric_coarse_pitch(D);
vitamin(str(tbolt_description(type), ":", "M", D, " x ", length, "mm"));
color(silver) {
hull()
for (x = [-1, 1])
translate([x * distance/2, 0, 0])
cylinder(d=W, h=T, center=true);
translate_z((length/2))
male_metric_thread(D, pitch, length - T, center = true, top = -1, bot = 0, solid = true, colour = undef);
}
}
module ttrack_insert(type, length, num_holes = 1, colour="LightSlateGray") {
TW = t_insert_top_width(type);
W = t_insert_width(type);
H = t_insert_height(type);
T = t_insert_top_thickness(type);
//distance = L - W;
D = t_insert_thread(type);
pitch = metric_coarse_pitch(D);
vit_colour = (colour == "LightSlateGray" ? "" : str(", colour=\"", colour, "\""));
vitamin(str("ttrack_insert(", type[0], ", ", length, ", ", num_holes, vit_colour, "):", t_insert_description(type), ", M", length, "mm, with ", num_holes, " M", D));
color(colour) {
union() {
difference() {
rotate([90,0,90]) {
linear_extrude(length, center=true, convexity=2)
polygon([
[ -TW/2, 0 ], // left top
[ -TW/2, -T ], // left centre, bottom of top
[ -W/2, -T ], // left centre
[ -W/2, -H ], // left bottom
[ W/2, -H ], // right bottom
[ W/2, -T ], // right centre
[ TW/2, -T ], // right centre, bottom of top
[ TW/2, 0 ] // right top
]);
}
ttrack_insert_hole_positions(type, length, num_holes)
translate_z(-H/2)
cylinder(h=H+1, d=t_insert_thread(type), center=true);
}
ttrack_insert_hole_positions(type, length, num_holes)
translate_z(-H/2)
female_metric_thread(D, pitch, H, center = true);
}
}
}
module ttrack_insert_hole_positions(type, length, num_holes) {
P = length / (num_holes + 1);
for (x = [P:P:length-P])
translate([length/2 - x,0,0])
children();
}

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//
// NopSCADlib Copyright Chris Palmer 2018
// 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>
use <screw.scad>
// Bolts HL, HW, HT, Thread M
ttrack_bolt_M6 = [ "ttrack_bolt_M6", "T-Track Bolt M6", 18, 12, 2.5, 6 ];
ttrack_bolt_M6_small = [ "ttrack_bolt_M6_small", "T-Track Bolt M6 with small head", 18, 11, 2.5, 6 ];
ttrack_bolt_M8 = [ "ttrack_bolt_M8", "T-Track Bolt M8", 22.5, 12.6, 3, 8 ];
// Inserts
// TW, W, H, SH, Thread M
ttrack_insert_mitre_30_M6 = [ "TTrack_insert_Miter30_M6", "T-Track insert, Miter track 30mm, M6 thread", 19, 23, 7.8, 4.8, 6 ];
ttrack_insert_mitre_30_M8 = [ "TTrack_insert_Miter30_M8", "T-Track insert, Miter track 30mm, M8 thread", 19, 23, 7.8, 4.8, 8 ];
//
// Tracks
// Width, Depth, Opening, Slot width, slot height, Top thickness, Screw pitch
// W D O SW SH TT Sp
ttrack_universal_19mm = [ "ttrack_universal_19mm", 19, 9.5, 9.5, 14.2, 3.3, 2.4, 75, M3_cs_cap_screw, ttrack_bolt_M8 ];
ttrack_universal_19mm_A = [ "ttrack_universal_19mm_A", 18.7, 12.5, 8.3, 12, 7.3, 3.5, 75, M3_cs_cap_screw, ttrack_bolt_M6 ];
ttrack_universal_19mm_B = [ "ttrack_universal_19mm_B", 19, 9.5, 6.6, 11.3, 4, 2.5, 75, M3_cs_cap_screw, ttrack_bolt_M6_small ];
ttrack_mitre_30mm = [ "ttrack_mitre_30mm", 30, 12.8, 19.3, 23.6, 3.1, 5.4, 75, M4_cs_cap_screw, ttrack_insert_mitre_30_M6 ];
ttrack_mitre_36mm = [ "ttrack_mitre_36mm", 36, 13.5, 19, 23.5, 3.6, 3.6, 75, M4_cs_cap_screw ];
ttracks = [ ttrack_universal_19mm, ttrack_universal_19mm_A, ttrack_universal_19mm_B, ttrack_mitre_30mm, ttrack_mitre_36mm];
ttrack_bolts = [ ttrack_bolt_M6, ttrack_bolt_M6_small, ttrack_bolt_M8 ];
ttrack_inserts = [ ttrack_insert_mitre_30_M6, ttrack_insert_mitre_30_M8 ];
use <ttrack.scad>