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rostock.scad
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rostock.scad
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include <configuration.scad>;
use <belt.scad>;
use <bearing.scad>;
use <nema.scad>;
use <motor_end.scad>;
use <idler_end.scad>;
use <carriage.scad>;
use <platform.scad>;
use <rod.scad>;
aluminum = [0.9, 0.9, 0.9];
steel = [0.8, 0.8, 0.9];
use_stls=false;
//build radius for animation.
br=50;
platformxyz=[cos($t*360)*br,sin($t*360)*br,30];
belt_length=smooth_rod_length-motor_end_height/2-idler_end_height/2;
module smooth_rod()
{
color(steel) cylinder(r=4, h=smooth_rod_length);
}
module tower(height)
{
translate([0, tower_radius, 0])
{
translate([0, 0, motor_end_height])
rotate([180,0,0])
if (use_stls) import ("motor_end.stl"); else render() motor_end();
translate([0, 0, smooth_rod_length-idler_end_height])
rotate(180)
if (use_stls) import ("idler_end.stl"); else idler_end();
translate([30, 0, 0]) smooth_rod();
translate([-30, 0, 0]) smooth_rod();
translate([0, 0, motor_end_height+bed_thickness+pcb_thickness+8+platformxyz[2]+height])
rotate([0, 180, 0])
{
if (use_stls) import ("carriage.stl"); else render() carriage();
for(j=[-30,30])
translate([j,0,0])
lm8uu();
}
translate([0, 17-10, motor_end_height/2]) nema17(47);
// Ball bearings for timing belt
translate([0,-4, smooth_rod_length-28/2])
bearing(8, 22, 7);
// Timing belt
translate([-22/2,-4+7/2, belt_length/2+motor_end_height/2])
rotate([0, 90, 0])
timing_belt(belt_length);
translate([22/2,-4+7/2, belt_length/2+motor_end_height/2])
rotate([0, 90, 0])
timing_belt(belt_length);
}
}
module rod_pair(lean_y,lean_x)
{
for(i=[-1,1])
translate([25*i,platform_hinge_offset,0])
rotate([lean_x,0,0])
rotate([0,lean_y,0])
rotate([0, -90, 0])
if (use_stls) import ("rod.stl"); else
rod(rod_length);
}
module rostock()
{
for(i=[0:2])
assign(angle=120*i)
assign(carriage_xy=[0,tower_radius-carriage_hinge_offset],
platform_xy=[platformxyz[0]*cos(angle)+platformxyz[1]*sin(angle),
platformxyz[1]*cos(angle)-platformxyz[0]*sin(angle)+
platform_hinge_offset])
assign(rod_dist=carriage_xy-platform_xy)
assign(dist=sqrt(rod_dist[0]*rod_dist[0]+rod_dist[1]*rod_dist[1]))
assign (height=sqrt(rod_length*rod_length-dist*dist))
assign(lean_y=90-acos(rod_dist[0]/rod_length),
lean_x=-atan2(rod_dist[1],height))
{
rotate(angle)
tower(height);
translate(platformxyz)
rotate(angle)
translate([0,0,motor_end_height+bed_thickness+pcb_thickness+
platform_thickness/2])
rod_pair(lean_y,lean_x);
}
translate(platformxyz)
translate([0, 0, motor_end_height+bed_thickness+pcb_thickness])
rotate([0, 0, 60])
if (use_stls) import ("platform.stl"); else platform();
% translate([0, 0, motor_end_height+bed_thickness/2])
cylinder(r=(tower_radius-8/2)/cos(30), h=bed_thickness, center=true, $fn=6);
color([0.9, 0, 0])
translate([0, 0, motor_end_height+bed_thickness+pcb_thickness/2])
cube([tower_radius*1.4, tower_radius*1.4, pcb_thickness], center=true);
}
rostock();