improved nut traps
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veverkaondrej
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// PRUSA iteration4
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// X end prototype
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// GNU GPL v3
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// Josef Průša <iam@josefprusa.cz> and contributors
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// http://www.reprap.org/wiki/Prusa_Mendel
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// http://prusamendel.org
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use <bearing.scad>
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use <polyholes.scad>
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rod_distance = 45;
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module x_end_base()
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{
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// Main block
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height = 58;
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translate(v=[-15,-9,height/2]) cube(size = [17,39,height], center = true);
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translate([-8,-28.5,0]) cube(size = [5,1,13.5]);
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// Bearing holder
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vertical_bearing_base();
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//Nut trap
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// Cylinder
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translate(v=[0,-17,0]) cylinder(h = 13.5, r=12.5, $fn=100);
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difference()
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{
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translate(v=[0,-17,13]) poly_cylinder(h = 3, r=12.5, $fn=25);
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translate(v=[8,-17,12]) rotate([0,0,0]) cube(size = [15,50,10], center = true);
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translate(v=[8,-24,12]) rotate([0,0,0]) cube(size = [50,15,10], center = true);
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translate(v=[0,-17, -1]) cylinder(h = 20, r = 6.7, $fn = 60);
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}
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}
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module reinforcement_selective_infill()
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{
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rotate([90,0,-15,]) translate ([-1.5, 8, 26])linear_extrude(height = 0.2) polygon( points=[[-2,0],[0,5],[8,0]] );
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rotate([90,0,-50,]) translate ([8.5, 8, 1.4])linear_extrude(height = 0.2) polygon( points=[[0,0],[0,5],[12,0]] );
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}
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module x_end_holes()
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{
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vertical_bearing_holes();
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// Belt hole
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translate(v=[-1,0,0])
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{
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// Stress relief
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translate(v=[-5.5-10+1.5,-10-1,30]) cube(size = [18,1,28], center = true);
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difference()
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{
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translate(v=[-5.5-10+1.5,-10,30]) cube(size = [10,46,28], center = true);
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// Nice edges
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translate(v=[-5.5-10+1.5-5,-10,30+23]) rotate([0,20,0]) cube(size = [10,46,28], center = true);
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translate(v=[-5.5-10+1.5+5,-10,30+23]) rotate([0,-20,0]) cube(size = [10,46,28], center = true);
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translate(v=[-5.5-10+1.5,-10,30-23]) rotate([0,45,0]) cube(size = [10,46,28], center = true);
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translate(v=[-5.5-10+1.5,-10,30-23]) rotate([0,-45,0]) cube(size = [10,46,28], center = true);
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}
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}
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// Bottom pushfit rod
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translate(v=[-15,-41,6]) rotate(a=[-90,0,0]) pushfit_rod(7.8,50);
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// Top pushfit rod
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translate(v=[-15,-41.5,rod_distance+6]) rotate(a=[-90,0,0]) pushfit_rod(7.8,50);
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// TR Nut trap
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// Hole for the nut
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//#translate(v=[0,-17, -1]) poly_cylinder(h = 9.01, r = 6.7, $fn = 60);
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translate(v=[0,-17, -1]) cylinder(h = 14.51, r = 6.7, $fn = 60);
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translate(v=[0,-17, -0.1]) cylinder(h = 1, r1 = 7.2,r2 = 6.7, $fn = 60);
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// Screw holes for TR nut
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translate(v=[0,-17, 0]) rotate([0, 0, -135]) translate([0, 9.5, -4]) cylinder(h = 19, r = 1.65, $fn=50);
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translate(v=[0,-17, 0]) rotate([0, 0, -135]) translate([0, -9.5, -4]) cylinder(h = 19, r = 1.65, $fn=50);
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translate(v=[0,-17,0]) rotate([0,0,-135]) translate([0,9.5,-1]) cylinder(h=2, r1=2.2,r2=1.65, $fn=50);
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translate(v=[0,-17,0]) rotate([0,0,-135]) translate([0,-9.5,-1]) cylinder(h=2, r1=2.2,r2=1.65,, $fn=50);
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// Nut traps for TR nut screws
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translate(v=[0,-17, 0]) rotate([0, 0, -135]) translate([0, 9.5, 11]) rotate([0, 0, 0])cylinder(h = 6, r = 3.1, $fn=6);
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translate(v=[0,-17, 0]) rotate([0,0,-135]) translate([0,-9.5,10]) rotate([0,0,30])cylinder(h = 4, r = 3.2, $fn=6);
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translate([-5.5,-17.2,10]) rotate([0,0,32]) cube([5,5.9,3.5]);
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translate([-0,-17.2,10]) rotate([0,0,58]) cube([5,10,3.5]);
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}
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// Final prototype
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module x_end_plain()
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{
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difference()
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{
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union()
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{
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difference()
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{
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x_end_base();
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x_end_holes();
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}
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}
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}
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}
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module pushfit_rod(diameter,length)
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{
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poly_cylinder(h = length, r=diameter/2);
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difference()
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{
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translate(v=[0,-diameter/2.85,length/2]) rotate([0,0,45]) cube(size = [diameter/2,diameter/2,length], center = true);
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translate(v=[0,-diameter/4-diameter/2-0.4,length/2]) rotate([0,0,0]) cube(size = [diameter,diameter/2,length], center = true);
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}
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}
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difference () {
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x_end_plain();
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//translate([-50,-50,-1]) rotate([0,0,0]) cube([100,100,5]);
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}
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//
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