X-Git-Url: http://challenge-bot.com/repos/?p=challenge-bot;a=blobdiff_plain;f=3d-printables%2Fcaster-standoff.scad;h=eb16cba2a8544d9f35e720d1ca5afdd7655e6c75;hp=310bc178500989cf7aa93a54f6ddcb35548bcae1;hb=ce941be740b45737d19eaa5c726b2f99efabe0b9;hpb=3939ed23635ab58da35272d44f0edd53f863dda2 diff --git a/3d-printables/caster-standoff.scad b/3d-printables/caster-standoff.scad index 310bc17..eb16cba 100644 --- a/3d-printables/caster-standoff.scad +++ b/3d-printables/caster-standoff.scad @@ -1,134 +1,29 @@ +/* + Copyright (C) 2015 Daniel Watson + See the end of the file for license conditions. +*/ // challenge-bot // GNU AGPLv3 (or later at your option) -// project available at these locations: -// https://gitorious.org/ozzloy/challenge-bot -// https://github.com/waynegramlich/challenge-bot +// project available here: +// https://challenge-bot.com/ -// use 10 ish for development, 60 or so for printing -$fn = 60; +include -standoff_radius = 14.732 / 2; // 0.580 / 2 inches from spec sheet -standoff_height = 55; // eyeballed +caster_standoff(); -nut_short_side = 4.7; // from calipers -nut_height = 1.6; // from calipers +/* + This file is part of challenge-bot. -// eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger -caster_flange_height = 5; -caster_flange_width = 20.32; // 0.800 inches -caster_flange_screw_radius = 2.286 / 2; // 0.090 inches -caster_flange_screw_length = 8; // eyeballed + Challenge-bot is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. -deck_grid_width = 25.4; // measured center to center on grid on pegboard -deck_flange_height = 2.9464; -deck_flange_screw_radius = 3.556 / 2; // For #6 machine screws -deck_flange_radius = (deck_grid_width) / 2 + deck_flange_screw_radius + 3; + GNU Affero Emacs 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 Affero General Public License for more details. -module deck_flange(){ - difference(){ - cylinder(h = deck_flange_height, r = deck_flange_radius); - for(ii = [-1, 1]){ - translate([deck_grid_width / 2 * ii, 0, -.1]) - cylinder(h = deck_flange_height * 1.1, - r = deck_flange_screw_radius); - translate([0, deck_grid_width / 2 * ii, -.1]) - cylinder(h = deck_flange_height * 1.1, - r = deck_flange_screw_radius);}}} - -module deck_flange_reinforcement(){ - translate([-deck_flange_radius, - -.5 * deck_flange_height / 2, - deck_flange_height]){ - difference (){ - cube([deck_flange_radius, deck_flange_height / 2, deck_flange_radius]); - translate([-.1, -.05 * deck_flange_height, 0]){ - rotate([0, -45, 0]){ - cube([deck_flange_radius * 1.5, // 1.5 is bigger than sqrt(2) - deck_flange_height * 1.1, // 1.1 is bigger than 1 - deck_flange_radius]);}}}}} - -module caster_flange_screws(){ - translate([standoff_radius, 0, 0]) - cylinder(h = caster_flange_screw_length, - r = caster_flange_screw_radius); - translate([-standoff_radius, 0, 0]) - cylinder(h = caster_flange_screw_length, - r = caster_flange_screw_radius);} - -module caster_flange(){ - side_radius = caster_flange_width / 2 - standoff_radius; - hull(){ - cylinder(h = caster_flange_height, r = standoff_radius); - translate([standoff_radius, 0, 0]) - cylinder(h = caster_flange_height, r = side_radius); - translate([-standoff_radius, 0, 0]) - cylinder(h = caster_flange_height, r = side_radius);}} - -module nut(size, height){ - width = size/1.75; - for (r = [-60, 0, 60]) rotate([0,0,r]) cube([width, size, height], true);} - -module nuts(){ - translate([standoff_radius, 0, nut_height/2]) - nut(nut_short_side, nut_height + .1); - translate([-standoff_radius, 0, nut_height/2]) - nut(nut_short_side, nut_height + .1);} - -module _2_screw (){ - //measured with calipers - screw_length = 8; - thread_radius = 2.17 / 2 - 0.1; // subtract 0.1 to make squeeze fit - head_height = 1.8; - head_radius = 4.1 / 2; - cylinder(r = thread_radius, h = screw_length); - cylinder(r = head_radius, h = head_height);} - -module caster_deck_interlock_solid(){ - translate([-1, standoff_radius - 2.1, 0]){ - cube([2, 2, standoff_height]);} - translate([-1, -standoff_radius + 0.1, 0]){ - cube([2, 2, standoff_height]);}} - -module caster_deck_interlock_hole(){ - translate([0, standoff_radius - 1, -0.1]){ - cube([2.5, 2.5, standoff_height], center = true);} - translate([0, -standoff_radius + 1, -0.1]){ - cube([2.5, 2.5, standoff_height], center = true);}} - -module caster_standoff_deck_side(){ - difference(){ - cylinder(h = standoff_height - caster_flange_height, - r = standoff_radius); - translate([0, 0, standoff_height - caster_flange_screw_length * 1.1 + 0.1]) - scale([1, 1, 1.1]) - caster_flange_screws(); - translate([0, 0, standoff_height - (caster_flange_height + nut_height)]) - nuts(); - translate([0, 0, standoff_height]){ - // make hole to get to screw head depth - cylinder(r = 4.1 / 2, h = 3, center = true); - translate([0, 0, -0.7]) - rotate([180, 0, 0]) - _2_screw(r = 0.5, h = 5);}} - deck_flange(); - for(ii = [0:3]){ - rotate([0, 0, 45 + 90 * ii]) - deck_flange_reinforcement();} - caster_deck_interlock_solid();} - -module caster_standoff_caster_side(){ - difference(){ - caster_flange(); - translate([0, 0, caster_flange_height - 0.7]){ - rotate([180, 0, 0]){ - _2_screw();}} - // make hole to get to screw head - translate([0, 0, caster_flange_height - 0.8]){ - cylinder(r = 4.1 / 2, h = 10);} - translate([0, 0, -.1]){ - caster_flange_screws();} - caster_deck_interlock_hole();}} - -caster_standoff_deck_side(); -translate([caster_flange_width / 2 + deck_flange_radius + 1, 0, 0]){ - caster_standoff_caster_side();} + You should have received a copy of the GNU Affero General Public License + along with challenge-bot. If not, see . +*/