X-Git-Url: https://git.hcoop.net/clinton/wilson.git/blobdiff_plain/618f5b83e8e65b0f2fe41e1ff170e67336a6985d..HEAD:/scad/x-end.scad

diff --git a/scad/x-end.scad b/scad/x-end.scad
index 764041c..1a47ab0 100644
--- a/scad/x-end.scad
+++ b/scad/x-end.scad
@@ -5,23 +5,58 @@
 // http://www.reprap.org/wiki/Prusa_Mendel
 // http://prusamendel.org
 
+// todo: make x-end height global and make anything relying implicitly
+// on the height of the x-end use that for positioning.
+
+// bearing height, strain relief (&& maybe make dependent upon the bearing diameter)
+
+
+
+// major issues with rev 3
+
+// - motor side screw hole conflicts with switch / other rear mount is
+//   inaccessible without removing the leadscrew from the nut
+
+// - New idler anti-pitching ribs are too big (new idler I wasn't
+//   using is larger so the existing ones worked fine for that one...)
+//   NOTE: new idler is meant for integrated toothed idler...
+
 use <bearing.scad>
+include <configuration.scad>
 
-rod_distance = 45;
-pushfit_d = 8.6;
+pushfit_d = smooth_rod_d + 0.25;
 hex_nut_r = 4.75;
 
+module nut_trap_base () {
+     cube(size=[16,21,8],center=true);
+     translate ([2,0,0]) cylinder(h=8,r=12.5,$fn=50,center=true);
+}
+
+module nut_trap () {
+     union() { 
+               // center post of brass nut
+                   cylinder(h=12,r=5.45,$fn=50,center=true);
+                   // holes for m3 screws in brass nut
+                   translate(v=[8,0,0]) cylinder(h=12,r=1.8,$fn=20,center=true);
+		   #rotate([0,0,90]) translate(v=[8,0,0]) cylinder(h=12,r=1.8,$fn=20,center=true);
+		   rotate([0,0,180]) translate(v=[8,0,0]) cylinder(h=12,r=1.8,$fn=20,center=true);
+		   #rotate([0,0,270]) translate(v=[8,0,0]) cylinder(h=12,r=1.8,$fn=20,center=true);
+     }
+}
+
 module x_end_base(){
 // Main block
-height = 58;
-translate(v=[-15,-9,height/2]) cube(size = [17,39,height], center = true);
+height = x_box_height;
+// TODO: calculate correct translate(y) + cube(y) using size of bearing
+translate(v=[-15,-10,height/2]) cube(size = [17,45,height], center = true);
 // Bearing holder
  vertical_bearing_base();	
 //Nut trap
+ translate(v=[-4-zmotor_delta_y,-17-zmotor_delta_x,4]) nut_trap_base ();
  // Cube
- translate(v=[-2-2,-17,4]) cube(size = [8,16,8], center = true);
+// #translate(v=[-2-2,-17,4]) cube(size = [8,16,8], center = true);
  // Hexagon
- translate(v=[0,-17,0]) rotate([0,0,30]) cylinder(h = 8, r=8, $fn = 6);
+// #translate(v=[0,-17,0]) rotate([0,0,30]) cylinder(h = 8, r=8, $fn = 6);
 }
 
 module x_end_holes(){
@@ -29,7 +64,8 @@ module x_end_holes(){
  // Belt hole
  translate(v=[-1,0,0]){
  // Stress relief
- translate(v=[-5.5-10+1.5,-10-1,30]) cube(size = [20,1,28], center = true);
+ translate(v=[-5.5-10+1.5,-bearing_diameter/2-4,30]) cube(size = [20,1,28], center = true);
+ // Cut out for belt (this is NOT centered because the motor isn't centered)
  difference(){
 	translate(v=[-5.5-10+1.5,-10,30]) cube(size = [10,46,28], center = true);
 
@@ -43,14 +79,15 @@ module x_end_holes(){
 }
 
 
-
+ pushrod_extra_z = 2.5;
 // Bottom pushfit rod
-translate(v=[-15,-41.5,6]) rotate(a=[-90,0,0]) pushfit_rod(pushfit_d,50);
+#translate(v=[-15,-41.5,smooth_rod_d/2+pushrod_extra_z]) rotate(a=[-90,0,0]) pushfit_rod(pushfit_d,50);
 // Top pushfit rod
-translate(v=[-15,-41.5,rod_distance+6]) rotate(a=[-90,0,0]) pushfit_rod(pushfit_d,50);
+translate(v=[-15,-41.5,rod_distance+smooth_rod_d/2+pushrod_extra_z]) rotate(a=[-90,0,0]) pushfit_rod(pushfit_d,50);
 // Nut trap
- #translate(v=[0,-17,-0.5]) cylinder(h = 4, r1=3.4, r2=2.9, $fn=25);
- translate(v=[0,-17,3]) rotate([0,0,30]) cylinder(h = 10, r=hex_nut_r, $fn = 6);
+translate(v=[-zmotor_delta_y,-17-zmotor_delta_x,3]) rotate ([0, 0, 45]) nut_trap ();
+// #translate(v=[0,-17,-0.5]) cylinder(h = 4, r1=3.4, r2=2.9, $fn=25);
+// translate(v=[0,-17,3]) rotate([0,0,30]) cylinder(h = 10, r=hex_nut_r, $fn = 6);
 }
 
 
@@ -66,11 +103,12 @@ x_end_plain();
 
 
 module pushfit_rod(diameter,length){
- cylinder(h = length, r=diameter/2, $fn=30);
- difference(){
- 	translate(v=[0,-diameter/2.85,length/2]) rotate([0,0,45]) cube(size = [diameter/2,diameter/2,length], center = true);
- 	translate(v=[0,-diameter/4-diameter/2-0.4,length/2]) rotate([0,0,0]) cube(size = [diameter,diameter/2,length], center = true);
- }
- //translate(v=[0,-diameter/2-2,length/2]) cube(size = [diameter,1,length], center = true);
+ translate([0,-0.3,0])  cylinder(h = length, r=diameter/2, $fn=30);
+ translate([0,0.3,0])  cylinder(h = length, r=diameter/2, $fn=30);
+// difference(){
+// 	translate(v=[0,-diameter/2.85,length/2]) rotate([0,0,45]) cube(size = [diameter/2,diameter/2,length], center = true);
+// 	translate(v=[0,-diameter/4-diameter/2-0.4,length/2]) rotate([0,0,0]) cube(size = [diameter,diameter/2,length], center = true);
+// }
+ 
 }