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endstop.scad
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endstop.scad
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include <configuration.scad>;
use <microswitch.scad>;
thickness = 9; // 1mm thicker than linear rail.
width = 15; // Same as vertical extrusion.
height = 15;
module endstopForRail() {
difference() {
union() {
cube([width, thickness, height], center=true);
translate([0, 0, -height/4])
cube([width+2, thickness, height/2], center=true);
translate([0, 2, 0])
cube([2.5, thickness, height], center=true);
}
translate([0, 0, 3]) rotate([90, 0, 0]) {
cylinder(r=m3_wide_radius, h=20, center=true, $fn=12);
translate([0, 0, 3.6-thickness/2]) {
cylinder(r=3, h=10, $fn=24);
translate([0, 5, 5])
cube([6, 10, 10], center=true);
}
translate([0, 0, -thickness/2]) scale([1, 1, -1])
cylinder(r1=m3_wide_radius, r2=7, h=4, $fn=24);
}
translate([0, -3-thickness/2, -2]) rotate([0, 180, 0]) {
% microswitch();
for (x = [-9.5/2, 9.5/2]) {
translate([x, 0, 0]) rotate([90, 0, 0])
cylinder(r=2.5/2, h=40, center=true, $fn=12);
}
}
}
}
thick=6; // less thick for carriage
// for more recent design of integrated wheeledCarriage
// use tilt=11.3 for first iteration with trapazoidal base
// slope on original trapazoid bottom carriage was 8mm in 40.
module endstopCarriage(tilt=0) {
difference() {
union() {
//translate([-width/2-1,-height/2,0]) cube([width+2+5, height+2, thick]);
hull() {
translate([-4,-6,0]) cylinder(h=thick,r=4,$fn=22);
translate([ 4,-6,0]) cylinder(h=thick,r=4,$fn=22);
translate([-4, 4,0]) cylinder(h=thick,r=4,$fn=22);
translate([ 6, 4,0]) rotate([0,0,tilt]) translate([9.5,0,0])
cylinder(h=thick,r=4,$fn=22);
}
translate([-3.4/2,-10,3.5]) cube([3.4, height+3, thick]);
}
// bolt hole to attach to extrusion
translate([0,-2.5,0]) {
translate([0,0,-1]) cylinder(r=m3_wide_radius, h=20, $fn=12);
translate([0,0,-1]) cylinder(r=3, h=3.3, $fn=24);
translate([0,0,thick+1]) rotate([0,0,30])
cylinder(r1=5.8/2,r2=8/2,h=4,$fn=6);
}
translate([3, 4, -1]) {
translate([2.5,0,0]) {
%rotate([90,0,180+tilt]) scale([-1,1,1]) translate([9.5/2-1,-2,0]) microswitch();
// 2.4mm diam was good for M2.5. go a little smaller for #2
rotate([0,0,tilt])
#translate([9.5-1,0,-1.5]) cylinder(r=2.3/2, h=thick+4, $fn=12);
#translate([ -1,0,-1.5]) cylinder(r=2.3/2, h=thick , $fn=12);
}
}
}
}
//translate([0,30, height/2]) endstopForRail();
mirror([1,0,0]) // switched sides of carriage
endstopCarriage(11.3*0);