77 lines
2.0 KiB
OpenSCAD
77 lines
2.0 KiB
OpenSCAD
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/*
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* BOLTS - Open Library of Technical Specifications
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* Copyright (C) 2013 Johannes Reinhardt <jreinhardt@ist-dein-freund.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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//square torus, r1 is big radius, r2 is small radius
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module makeSquorus(r1,r2){
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difference(){
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cylinder(r=r1+r2,h=2*r2,center=true);
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cylinder(r=r1-r2,h=3*r2,center=true);
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}
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}
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//r1 is inner, r2 is outer
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module makeRing(r1,r2,h){
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difference(){
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cylinder(r=r2,h=h,center=true);
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cylinder(r=r1,h=2*h,center=true);
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}
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}
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module singlerowradialbearing(d1,d2,B){
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rb = B/4;
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n = ceil((d2-d1)/rb);
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translate([0,0,B/2]){
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union(){
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difference(){
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cylinder(r=d2/2,h=B,center=true);
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cylinder(r=d1/2,h=B+0.01,center=true);
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//gap
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makeRing(d1/2+0.3*(d2-d1)/2,d1/2+0.6*(d2-d1)/2,2*B);
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//track
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makeSquorus((d2-d1)/2,rb);
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}
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for ( i = [0 : n-1] ){
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rotate( i * 360 / n, [0, 0,1])
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translate([0, (d2-d1)/2, 0])
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sphere(r = rb);
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}
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}
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}
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}
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module axialthrustbearing(d1_w,d2_w,d1_g,d2_g,B){
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rb = B/4;
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n = ceil((d2_w+d1_w)/2/rb);
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union(){
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difference(){
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union(){
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translate([0,0,-0.35*B]) makeRing(d1_g/2,d2_g/2,0.3*B);
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translate([0,0,+0.35*B]) makeRing(d1_w/2,d2_w/2,0.3*B);
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}
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//track
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makeSquorus((d2_w+d1_w)/4,rb);
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}
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for ( i = [0 : n-1] ){
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rotate( i * 360 / n, [0, 0,1])
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translate([0, (d2_w+d1_w)/4, 0])
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sphere(r = rb);
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}
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}
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}
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