// -*- C -*-
+//
+// axlepin.scad
+//
+// 3D designs for for securing things on axles
+// Copyright 2012,2016 Ian Jackson
+//
+// This work 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.
+//
+// This work 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 this work. If not, see <http://www.gnu.org/licenses/>.
+
+
function AxlePin_holerad() = 2;
+function AxlePin_zoffset(holerad=2, slop=0.5) = (holerad - slop)*0.7;
module AxlePin(axlerad, pinlen, holerad=2, tabthick=5, slop=0.5){
pinr = holerad - slop;
intersection(){
- translate([0, 0, pinr*0.7]) {
+ union(){
translate([0, -pinlen/2, 0]) rotate([-90,0,0])
cylinder(r=pinr, h=pinlen, $fn=10);
translate([-tabthick, axlerad, -holerad])
cube([tabthick*2, holerad*2, holerad*2]);
}
- translate([-50,-50,0]) cube([100,100,50]);
+ translate([-50,-50,-AxlePin_zoffset(holerad,slop)])
+ cube([100,100,50]);
}
}
+function Washer_thick() = 1.2;
+
module Washer(axlerad, washerrad, thick=1.2, slop=0.5){
difference(){
cylinder(h=thick, r=washerrad);