New idler

New extruder idler for current extruder design

Printed-Parts/scad/extruder-idler.scad

@@ -1,46 +1,63 @@
+
+
+module part_body(){
+    
+    //bottom round edge
+    translate([ -7, 4, 6 ]) rotate([0,90,0]) cylinder(r=4, h=21.5, $fn=200 );
+    translate([ -7, 4, 4 ]) rotate([0,90,0]) cylinder(r=4, h=21.5, $fn=200 );
+    translate([ 11, 0, 4]) cube([3.5,8,2]);
+
+    // body
+    translate([ -7, 4, 0 ]) cube([18,10,10]);
+    translate([ -7, 0, 4 ]) cube([18,32,2]);
+    translate([ -5, 4, 3 ]) cube([10,48,7]);
+    translate([ -11, 11, 0 ]) cube([22,28,10]);
+    translate([ -9, 11, 0 ]) cube([18,30,10]);
+
+    // upper round edges    
+    translate([ 9, 39, 0 ]) cylinder(r=2, h=10, $fn=25);
+    translate([ -9, 39, 0 ]) cylinder(r=2, h=10, $fn=25);
+        
+    // upper round piece
+    translate([ 0, 52, 6.5 ]) rotate([0,0,0]) cylinder(r=5, h=7, $fn=200, center=true);
+    }    
+
+module cut_away(){
+
+    // axis
+    translate([ 0, 4, 6 ]) rotate([0,90,0]) cylinder(r=1.7, h=30, $fn=200, center=true); 
+
+    // bolt holes
+    translate([ 7.5, 35.8, -1 ]) cylinder(r=1.75, h=12, $fn=20);
+    translate([ 7.5, 36.5, -1 ]) cylinder(r=1.75, h=12, $fn=20);
+    translate([ 7.5, 37.2, -1 ]) cylinder(r=1.75, h=12, $fn=20);
+
+    translate([ -7.5, 35.8, -1 ])cylinder(r=1.75, h=12, $fn=20);
+    translate([ -7.5, 36.5, -1 ])cylinder(r=1.75, h=12, $fn=20);
+    translate([ -7.5, 37.2, -1 ])cylinder(r=1.75, h=12, $fn=20);
+    
+    translate([0,52,0]) sphere(r=5, $fn=20);
+    
+    //bearing hole
+    translate([ 0, 20, 3 ]){
+        rotate([0,90,0]){
+            cylinder(r=8.5, h=7.5, $fn=200, center=true);
+            %cylinder(r=8, h=7.5, $fn=200, center=true);
+            cylinder(r=2.5, h=17, $fn=200, center=true);
+            }
+        translate([0,0,-5]) cube([17,5,10], center=true);
+        translate([0,0,-5]) cube([7.5,17,10], center=true);
+    }
+}
+
 module idler(){
-difference(){
-union(){
-translate([0,4,6])rotate([0,90,0]) cylinder(r=4, h=14, $fn=200, center=true);
-translate([0,4,4])rotate([0,90,0]) cylinder(r=4, h=14, $fn=200, center=true);
     
-translate([(-14/2) ,4,0])cube([19-5,10,10]);
+    // final part
-translate([-14/2,0,4])cube([14,32,2]);
+    translate([0,0,10]) mirror([0,0,1])
-translate([-5,4,3])cube([10,48,7]);
+    difference(){
-
+        part_body();
-
+        cut_away();
-translate([0,48+4,3.5+3])rotate([0,0,0]) cylinder(r=5, h=7, $fn=200, center=true);
+    }    
-//translate([0,48+4,3.5+3])rotate([0,0,0]) sphere(r=5, h=14, $fn=200, center=true);    
-
-
-translate([-11,11,0])cube([22,28,10]);
-translate([-9,11,0])cube([18,30,10]);
-    
-    translate([7+2,39,0])cylinder(r=2, h=10, $fn=25);
-    translate([-7-2,39,0])cylinder(r=2, h=10, $fn=25);
 }
     
-translate([0,4,6])rotate([0,90,0]) cylinder(r=1.7, h=20, $fn=200, center=true);
+idler();
-
-//bolt holes
-translate([7.5,35.8,-1])cylinder(r=1.75, h=12, $fn=20);
-translate([7.5,36.5,-1])cylinder(r=1.75, h=12, $fn=20);
-translate([7.5,37.2,-1])cylinder(r=1.75, h=12, $fn=20);
-
-translate([-7.5,35.8,-1])cylinder(r=1.75, h=12, $fn=20);
-translate([-7.5,36.5,-1])cylinder(r=1.75, h=12, $fn=20);
-translate([-7.5,37.2,-1])cylinder(r=1.75, h=12, $fn=20);
-
-translate([0,20,3]){
-rotate([0,90,0]){
-cylinder(r=17/2, h=7.5, $fn=200, center=true);
-%cylinder(r=16/2, h=7.5, $fn=200, center=true);
-cylinder(r=2.5, h=17, $fn=200, center=true);
-}
-translate([0,0,-5])cube([17,5,10], center=true);
-translate([0,0,-5])cube([7.5,17,10], center=true);
-}
-}
-}
-
-translate([0,0,10]) mirror([0,0,1]) idler();