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Make taper work for taller bushings

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Timothy Farrell 2019-12-30 11:23:33 -06:00
parent 9a1da123dd
commit 6a10fa96ee
1 changed files with 24 additions and 14 deletions
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38
bushing.jscad
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@ -1,7 +1,7 @@
/// title : Basic Sleeved Rubber Bushing /// title : Basic Sleeved Rubber Bushing
// author : Tim Farrell // author : Tim Farrell
// license : MIT License // license : MIT License
// revision : 2 // revision : 3
// tags : Rubber // tags : Rubber
// file : bushing.jscad // file : bushing.jscad
@ -11,26 +11,36 @@ function getParameterDefinitions () {
{name: 'host_hole_diameter', type: 'float', initial: 13, min: 1, max: 40, step: 1, caption: 'Host hole diameter'}, {name: 'host_hole_diameter', type: 'float', initial: 13, min: 1, max: 40, step: 1, caption: 'Host hole diameter'},
{name: 'host_hole_height', type: 'float', initial: 0.8, caption: 'Host hole height'}, {name: 'host_hole_height', type: 'float', initial: 0.8, caption: 'Host hole height'},
{name: 'bushing_height', type: 'float', initial: 4, min: 1, max: 40, step: 1, caption: 'Bushing height'}, {name: 'bushing_height', type: 'float', initial: 4, min: 1, max: 40, step: 1, caption: 'Bushing height'},
{name: 'bushing_diameter', type: 'float', initial: 10, min: 1, max: 40, step: 1, caption: 'Bushing diameter'} {name: 'bushing_diameter', type: 'float', initial: 10, min: 1, max: 40, step: 1, caption: 'Bushing diameter'},
{name: 'taper', type: 'checkbox', checked: true, caption: 'Taper Edges?'}
]; ];
} }
function donut(p) { function donut(p) {
const outer_radius = p.overhang + p.host_hole_diameter/2 - p.bushing_height/2; const inner_radius = (p.bushing_height - p.host_hole_height) / 2;
const inner_radius = p.bushing_height/2; const outer_radius = p.overhang + p.host_hole_diameter/2 - inner_radius;
return torus({ ri: inner_radius, ro: outer_radius }); const z_offset = p.bushing_height/2 - (p.bushing_height/2 - p.host_hole_height/2);
return union(
torus({ ri: inner_radius, ro: outer_radius }).translate([0, 0, z_offset]),
torus({ ri: inner_radius, ro: outer_radius }).translate([0, 0, -z_offset])
);
} }
function bushing_main(p) { function bushing_main(p) {
return union( const outer_radius = p.overhang + p.host_hole_diameter/2;
cylinder({ const main_cylinder = cylinder({
r: p.overhang + p.host_hole_diameter/2 - p.bushing_height/2, r: outer_radius - (p.taper ? (p.bushing_height - p.host_hole_height) / 2 : 0),
h: p.bushing_height, h: p.bushing_height,
center: true center: true
}), });
donut(p) if (p.taper) {
); return union(
main_cylinder,
donut(p)
);
}
return main_cylinder;
} }
function host_hole(p) { function host_hole(p) {
@ -52,5 +62,5 @@ function main(p) {
bushing_main(p), bushing_main(p),
host_hole(p), host_hole(p),
bushing_sleeve(p) bushing_sleeve(p)
) );
} }