reprap-parts/x-end.scad at master · AxTheB/reprap-parts · GitHub

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// PRUSA Mendel
// X-end prototype for
// GNU GPL v2
// Josef Průša
// josefprusa@me.com
// prusadjs.cz
// http://www.reprap.org/wiki/Prusa_Mendel
// http://github.com/prusajr/PrusaMendel

include <configuration.scad>
corection = 1.17;
use <bushing.scad>
use <teardrop.scad>

axis_diameter_real = 4;
axis_diameter_larger = 4.5 ;
pressure_pad_height = 1.4;
small_hole_displacement = 0.6;

module axehole()
{
    rotate(a=[-90,-90,0]){
        //making friction area
        difference(){
            //hole cuting
            teardropcentering(axis_diameter_larger,50);
            //substracting friction pad
            translate(v = [0, -axis_diameter_larger, (-axis_diameter_larger-10)-(axis_diameter_real-pressure_pad_height)]) cube(size = [33,axis_diameter_larger*2,axis_diameter_larger+10]);
        }
        //smaller cut
        translate(v = [0, axis_diameter_larger-1, -axis_diameter_larger]) cube(size = [34,1,axis_diameter_larger]);
        //cut thru
        #translate(v = [0, -axis_diameter_larger, -axis_diameter_larger-10]) cube(size = [34,1,axis_diameter_larger+10]);
        //bottom cut
        translate(v = [0, -axis_diameter_larger, -axis_diameter_larger-10]) cube(size = [1,axis_diameter_larger*2,axis_diameter_larger+10]);
        //top cut
        translate(v = [33, -axis_diameter_larger, -axis_diameter_larger-10]) cube(size = [1,axis_diameter_larger*2,axis_diameter_larger+10]);
        //strenght cuts
        translate(v = [5, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [10, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [15, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [20, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [25, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [30, axis_diameter_larger-2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [5+2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [10+2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [15+2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [20+2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
        translate(v = [25+2.5, axis_diameter_larger+2, -axis_diameter_larger+small_hole_displacement]) cylinder(h = 7, r=0.4, $fn=6, center=true);
    }
}

module xend(){
//bushing on Z axis smooth rod
translate(v = [0, 9.5, 0])bushing(true,65);

translate(v = [0,35,24.5]) union(){

difference(){
union(){
//platform
translate(v = [-25, -40, -16.6])cube(size = [20,40,15.8], center = true);
translate(v = [25, -40, -16.6])cube(size = [20,40,15.8], center = true);
}


//holes for axis
translate(v = [-25, -23, -16.7]) rotate(a=[90,0,0]) {
    axehole();
}
mirror([ 1, 0, 0 ])translate(v = [-25, -23, -16.7]) rotate(a=[90,0,0]) {
    axehole();
}

//slider cutouts
translate(v = [0, -25, 15])
    difference(){
    translate(v = [0, -0, -14.5]) cube(size = [23,23,50], center = true);
    }
//nut trap
translate(v = [0, -55, 15]) {
    difference(){
    translate(v = [0, -0, -15]) cylinder(h = 50, r=m8_nut_diameter/2+thin_wall, $fn=6, center=true);
    }
}
}

//slider
translate(v = [0, -25, 15])
    difference(){
union(){
    translate(v = [-(1+(thin_wall/2)-0.25), -3.5, -9.5]) cube(size = [15.5+thin_wall,17,60], center = true);

    translate(v = [0, -3.5, -31.6]) cube(size = [33,17,15.8], center = true);
}
    translate(v = [0, -0, -7])cube(size = [17,17,70], center = true);}

//nut trap
//correction for thin wall


translate(v = [0, -55, 15]) {
difference(){
    union(){difference(){
union(){
    translate(v = [0, -0, -19.5])cylinder(h = 40, r=m8_nut_diameter/2+thin_wall*corection, $fn=6, center=true);
    translate(v = [0, 0, -31.6]) cube(size = [35,10,15.8], center = true);}
    cylinder(h = 90, r=m8_nut_diameter/2, $fn=6, center=true);
    }
    translate(v = [0, 0, -31]) cylinder(h = 4, r=m8_nut_diameter/2+thin_wall, $fn=6, center=true);}
    translate(v = [0, 0, 12.5]) cylinder(h = 90, r=m8_diameter/2, $fn=9, center=true);
}
}


//idler wheel connector
}

//two more rounded corners

}

module xendcorners(dia1, dia2, dia3, dia4, height=0){
translate(v = [0,35,24.5]) union(){
//round corners
translate(v = [35.1, -60.1, -25]) rotate(a=[0,0,90]) roundcorner(dia1);
translate(v = [35.1, -19.9, -25]) rotate(a=[0,0,-180]) roundcorner(dia2);
translate(v = [-35.1,-60.1,-25]) rotate(a=[0,0,0]) roundcorner(dia3);
translate(v = [-35.1, -19.9, -25]) rotate(a=[0,0,-90]) roundcorner(dia4);
}
}
//xendcorners(5,5,5,5,0);
xend();