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1b071f5 Jan 18, 2011
112 lines (100 sloc) 2.03 KB
/*
* OpenSCAD Metric Fastners Library (www.openscad.org)
* Copyright (C) 2010-2011 Giles Bathgate
*
* This program 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,
* LGPL version 2.1, or (at your option) any later version of the GPL.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
$fn=50;
apply_chamfer=true;
module cap_bolt(dia,len)
{
e=1.5*dia;
h1=1.25*dia;
cylinder(r=dia/2,h=len);
translate([0,0,-h1]) cylinder(r=e/2,h=h1);
}
module csk_bolt(dia,len)
{
h1=0.6*dia;
h2=len-h1;
cylinder(r=dia/2,h=h2);
cylinder(r1=dia,r2=dia/2,h=h1);
}
module washer(dia)
{
t=0.1*dia;
difference()
{
cylinder(r=dia,h=t);
translate([0,0,-t/2])cylinder(r=dia/2,h=t*2);
}
}
module flat_nut(dia)
{
m=0.8*dia;
e=1.8*dia;
c=0.2*dia;
difference()
{
cylinder(r=e/2,h=m,$fn=6);
translate([0,0,-m/2])cylinder(r=dia/2,h=m*2);
if(apply_chamfer)
translate([0,0,c])cylinder_chamfer(e/2,c);
}
}
module bolt(dia,len)
{
e=1.8*dia;
k=0.7*dia;
c=0.2*dia;
difference()
{
cylinder(r=e/2,h=k,$fn=6);
if(apply_chamfer)
translate([0,0,c])cylinder_chamfer(e/2,c);
}
cylinder(r=dia/2,h=len);
}
module cylinder_chamfer(r1,r2)
{
t=r1-r2;
p=r2*2;
rotate_extrude()
difference()
{
translate([t,-p])square([p,p]);
translate([t,0])circle(r2);
}
}
module chamfer(len,r)
{
p=r*2;
linear_extrude(height=len)
difference()
{
square([p,p]);
circle(r);
}
}
union()
{
//csk_bolt(3,14);
//washer(3);
//flat_nut(3);
//bolt(4,14);
//cylinder_chamfer(8,1);
//chamfer(10,2);
}