challenge-bot.com Git - challenge-bot/blob - 3d-printables/motor-mount-data.scad

   1 /*
   2   Copyright (C) 2015 Daniel Watson
   3   See the end of the file for license conditions.
   4 */
   5 // challenge-bot
   6 // GNU AGPLv3 (or later at your option)
   7 // project available here:
   8 // https://challenge-bot.com/
   9
  10 // from schematic http://goo.gl/96RKol
  11 collar_radius = 9.2 / 2 + 0.75;
  12 nubbin_radius = 4.48 / 2 + 0.5;
  13 screw_radius = 2.9 / 2 + 0.8; // a little bigger so screws fit through
  14
  15 motor_height = 22.23;
  16
  17 // http://freespace.virgin.net/matt.waite/resource/handy/screwsize.htm
  18 _6_radius = 3.5 / 2 + 0.75;
  19
  20 // measurements we made up:
  21 mount_total_x = 38;
  22 mount_total_y = mount_total_x;
  23 mount_total_z = 3.175; // 3/16 in mm
  24
  25 module motor_holes() {
  26   collar_x_offset = 10.8;
  27   nubbin_x_offset = 22.23;
  28   // actual motor screw holes are 0.2 further than spec says
  29   screw_x_offset = 30.81 + 0.2;
  30   screw_y_offset = 17.44 / 2;
  31
  32   translate([collar_x_offset, 0, 0]) {
  33     cylinder(r = collar_radius, h = mount_total_z + 0.1); }
  34   translate([nubbin_x_offset, 0, 0]) {
  35     cylinder(r = nubbin_radius, h = mount_total_z + 0.1); }
  36   translate([screw_x_offset, 0, 0]) {
  37     translate([0, screw_y_offset, 0]) {
  38       cylinder(r = screw_radius, h = mount_total_z + 0.1); }
  39     translate([0, -screw_y_offset, 0]) {
  40       cylinder(r = screw_radius, h = mount_total_z + 0.1); } } }
  41
  42 module bracket_holes() {
  43   translate([6.2, 0, 0]) {
  44     cylinder(r = _6_radius, h = mount_total_z + 0.1); }
  45   translate([mount_total_x - 6.2, 0, 0]) {
  46     cylinder(r = _6_radius, h = mount_total_z + 0.1); } }
  47
  48 module motor_mount() {
  49   difference() {
  50     cube([mount_total_x, mount_total_y, mount_total_z]);
  51     translate([0, 6.2, -0.05]) {
  52       bracket_holes(); }
  53     translate([1, mount_total_y - motor_height / 2 - 3, -0.05]) {
  54       motor_holes(); } } }
  55
  56 /*
  57   This file is part of challenge-bot.
  58
  59   Challenge-bot is free software: you can redistribute it and/or modify
  60   it under the terms of the GNU Affero General Public License as published by
  61   the Free Software Foundation, either version 3 of the License, or
  62   (at your option) any later version.
  63
  64   GNU Affero Emacs is distributed in the hope that it will be useful,
  65   but WITHOUT ANY WARRANTY; without even the implied warranty of
  66   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  67   GNU Affero General Public License for more details.
  68
  69   You should have received a copy of the GNU Affero General Public License
  70   along with challenge-bot.  If not, see <http://www.gnu.org/licenses/>.
  71 */