diff --git a/readme.md b/readme.md index 17251b4..d95ff2a 100644 --- a/readme.md +++ b/readme.md @@ -43,13 +43,13 @@ A list of changes classified as breaking, additions or fixes is maintained in [C Extrusion_brackets PSUs Terminals Pocket_handle Sweep Extrusions Panel_meters Toggles Press_fit Thread Fans Photo_interrupters Transformers Printed_box Tube - Fastons Pillars Tubings Printed_pulleys - Fuseholder Pillow_blocks Variacs Ribbon_clamp - Gear_motors Pin_headers Veroboard SSR_shroud - Geared_steppers Potentiometers Washers Screw_knob - Green_terminals Pulleys Wire Socket_box - Hot_ends Zipties Strap_handle - Hygrometer + Fastons Pillars Ttracks Printed_pulleys + Fuseholder Pillow_blocks Tubings Ribbon_clamp + Gear_motors Pin_headers Variacs SSR_shroud + Geared_steppers Potentiometers Veroboard Screw_knob + Green_terminals Pulleys Washers Socket_box + Hot_ends Wire Strap_handle + Hygrometer Zipties --- @@ -4684,6 +4684,80 @@ Iron core transformers. The grey shaded area is the keep out region where the te | 1 | `transformer(SMALLTX)` | Transformer Small mains | +Top + +--- + +## Ttracks +T-Tracks used in woodworking jigs + +[vitamins/ttracks.scad](vitamins/ttracks.scad) Object definitions. + +[vitamins/ttrack.scad](vitamins/ttrack.scad) Implementation. + +[tests/ttracks.scad](tests/ttracks.scad) Code for this example. + +### Properties +| Function | Description | +|:--- |:--- | +| `t_insert_description(type)` | Description of this t-track insert | +| `t_insert_height(type)` | Height of t-track insert | +| `t_insert_thread(type)` | M thread for this the screw hole in this insert | +| `t_insert_top_thickness(type)` | Top thickness for t-track insert | +| `t_insert_top_width(type)` | Top Width of t-track insert | +| `t_insert_width(type)` | Width of t-track insert | +| `tbolt_description(type)` | Description of this t-track bolt | +| `tbolt_head_length(type)` | Head length for t-track bolt | +| `tbolt_head_thickness(type)` | Head thickness for t-track bolt | +| `tbolt_head_width(type)` | Head width for t-track bolt | +| `tbolt_thread(type)` | M thread for this bolt | +| `ttrack_fixture(type)` | Fixture, such as T-bolt or Miter insert used with this track | +| `ttrack_height(type)` | Height of track section | +| `ttrack_opening(type)` | Width of the opening | +| `ttrack_screw(type)` | Screw used to fasten track | +| `ttrack_screw_pitch(type)` | Distance between screws | +| `ttrack_slot_height(type)` | Height of the slot | +| `ttrack_slot_width(type)` | Width of the slot | +| `ttrack_top_thickness(type)` | Thickness of the top layer | +| `ttrack_width(type)` | Width of track section | + +### Functions +| Function | Description | +|:--- |:--- | +| `ttrack_holes(type, length)` | Number of holes in a rail given its `length` | + +### Modules +| Module | Description | +|:--- |:--- | +| `ttrack(type, length, colour = "LightSlateGray")` | Draw the specified rail | +| `ttrack_hole_positions(type, length)` | Position children over screw holes | +| `ttrack_place_bolt(type, pos, bolt = undef)` | Place a T-Bolt relative to the centre of the track | +| `ttrack_place_insert(type, pos, insert = undef)` | Place a T-Insert relative to the centre of the track | + +![ttracks](tests/png/ttracks.png) + +### Vitamins +| Qty | Module call | BOM entry | +| ---:|:--- |:---| +| 3 | `screw(M3_cs_cap_screw, 15)` | Screw M3 cs cap x 15mm | +| 3 | `screw(M4_cs_cap_screw, 15)` | Screw M4 cs cap x 15mm | +| 2 | `screw(M6_hex_screw, 15)` | Screw M6 hex x 15mm | +| 1 | `ttrack(ttrack_mitre_30mm, 120)` | T-Track ttrack_mitre_30mm x 120mm | +| 1 | `ttrack(ttrack_mitre_30mm, 200)` | T-Track ttrack_mitre_30mm x 200mm | +| 1 | `ttrack(ttrack_mitre_36mm, 120)` | T-Track ttrack_mitre_36mm x 120mm | +| 1 | `ttrack(ttrack_universal_19mm, 120)` | T-Track ttrack_universal_19mm x 120mm | +| 1 | `ttrack(ttrack_universal_19mm, 200)` | T-Track ttrack_universal_19mm x 200mm | +| 1 | `ttrack(ttrack_universal_19mm_A, 120, colour="red")` | T-Track ttrack_universal_19mm_A x 120mm | +| 1 | `ttrack(ttrack_universal_19mm_B, 120, colour="blue")` | T-Track ttrack_universal_19mm_B x 120mm | +| 1 | `T-Track Bolt M6` | M6 x 30mm | +| 1 | `T-Track Bolt M6 with small head` | M6 x 30mm | +| 3 | `T-Track Bolt M8` | M8 x 30mm | +| 1 | `ttrack_insert(TTrack_insert_Miter30_M6, 30, 1)` | T-Track insert, Miter track 30mm, M6 thread, M30mm, with 1 M6 | +| 1 | `ttrack_insert(TTrack_insert_Miter30_M6, 30, 1, colour="red")` | T-Track insert, Miter track 30mm, M6 thread, M30mm, with 1 M6 | +| 1 | `ttrack_insert(TTrack_insert_Miter30_M6, 60, 2, colour="red")` | T-Track insert, Miter track 30mm, M6 thread, M60mm, with 2 M6 | +| 1 | `ttrack_insert(TTrack_insert_Miter30_M8, 30, 1, colour="red")` | T-Track insert, Miter track 30mm, M8 thread, M30mm, with 1 M8 | + + Top --- diff --git a/tests/png/ttracks.png b/tests/png/ttracks.png new file mode 100644 index 0000000..0fd7f0f Binary files /dev/null and b/tests/png/ttracks.png differ diff --git a/tests/ttracks.scad b/tests/ttracks.scad new file mode 100644 index 0000000..9e713d3 --- /dev/null +++ b/tests/ttracks.scad @@ -0,0 +1,67 @@ +// +// 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 . +// +include <../utils/core/core.scad> +use <../utils/layout.scad> + +include <../vitamins/ttracks.scad> + +module ttracks() { + colours = [ "LightSlateGray", "red", "blue", "LightSlateGray", "LightSlateGray" ]; + + for(i = [0: len(ttracks) -1]) + translate([(i < 4 ? 30 : 35) * i, 60]) + ttrack(ttracks[i], 120, colours[i]); + + for(i = [0: len(ttrack_bolts) -1]) + translate([30 * i, -15]) + ttrack_bolt(ttrack_bolts[i], 30); + + for(i = [0: len(ttrack_inserts) -1]) { + translate([35 * (i + 3), -25]) + rotate([0,0,90]) + ttrack_insert(ttrack_inserts[i], 30, colour=colours[i]); + } + + translate([-35,20,0]) { + ttrack_assembly(ttrack_mitre_30mm, 200); + ttrack_place_insert(ttrack_mitre_30mm, 50) + ttrack_insert(ttrack_fixture(ttrack_mitre_30mm), 30, 1, "red"); + + ttrack_place_insert(ttrack_mitre_30mm, -60) { + ttrack_insert(ttrack_fixture(ttrack_mitre_30mm), 60, 2, "red"); + ttrack_insert_hole_positions(ttrack_fixture(ttrack_mitre_30mm), 60, 2) + translate_z(8) + screw(M6_hex_screw, 15); + } + } + + translate([-70,20,0]) { + ttrack_assembly(ttrack_universal_19mm, 200); + ttrack_place_bolt(ttrack_universal_19mm, 50) + ttrack_bolt(ttrack_fixture(ttrack_universal_19mm), 30); + + ttrack_place_bolt(ttrack_universal_19mm, -60) + ttrack_bolt(ttrack_fixture(ttrack_universal_19mm), 30); + } + +} + +if($preview) + let($show_threads = true) + ttracks(); diff --git a/vitamins/ttrack.scad b/vitamins/ttrack.scad new file mode 100644 index 0000000..6544d3f --- /dev/null +++ b/vitamins/ttrack.scad @@ -0,0 +1,209 @@ +// +// 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 . + +// +//! T-Tracks used in woodworking jigs +// +include <../utils/core/core.scad> +use <../utils/thread.scad> + +use + +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(); +} \ No newline at end of file diff --git a/vitamins/ttracks.scad b/vitamins/ttracks.scad new file mode 100644 index 0000000..0c75a29 --- /dev/null +++ b/vitamins/ttracks.scad @@ -0,0 +1,52 @@ +// +// 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 . +// +include <../core.scad> + +use + +// 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