New Y belt holder

New design of Y belt holder for easier assembly

Printed-Parts/scad/y-belt-holder.scad

@@ -1,44 +1,89 @@
-// PRUSA iteration3
-// Y belt holder
-// GNU GPL v3
-// Josef Průša <iam@josefprusa.cz> and contributors
-// http://www.reprap.org/wiki/Prusa_Mendel
-// http://prusamendel.org
-
-
-module belt_holder_base(){
- translate([-33-8.5,0,-1]) cube([33,15,16]); 
- translate([-33-8.5,11,-1]) cube([33,15,16]);
- translate([-50,22,-1]) cube([50,4,16]);	
-}
-
-module belt_holder_beltcut(){
-position_tweak=-0.2;
- // Belt slit
- translate([-66,-0.5+10,3]) cube([67,0.55,15]);
- // Smooth insert cutout
- translate([-66,-0.5+10,12]) rotate([45,0,0]) cube([67,15,15]);
- // Individual teeth
- for ( i = [0 : 23] ){
-  translate([0-i*2,21.5+8.5,6]) %cube([1.1,2,15]);
-  translate([0-i*2+position_tweak,-0.5+8.5,3]) cube([1.1,2,15]);
- }
- // Middle opening
- translate([-2-25,-1,3]) cube([4,11,15]);	
-}
-
-module belt_holder_holes(){
- translate([-4.5,0,7.5]) rotate([-90,0,0]) cylinder(h=30, r=1.7, $fn=10);
- translate([-45.5,0,7.5]) rotate([-90,0,0]) cylinder(h=30, r=1.7, $fn=10);
-}
-
-// Final part
-module belt_holder(){
- difference(){
-  belt_holder_base();
-  belt_holder_beltcut();
-  belt_holder_holes();
- }
-}
-
-belt_holder();
+// PRUSA iteration3
+// Y belt holder
+// GNU GPL v3
+// Josef Průša <iam@josefprusa.cz> and contributors
+// http://www.reprap.org/wiki/Prusa_Mendel
+// http://prusamendel.org
+
+module face_plate(){
+     // face plate
+    translate([ 0, 0, -1 ]) cube([ 25, 26, 4 ]); 
+    translate([ -8, 22, -1 ]) cube([ 49, 4, 4 ]);
+    
+}
+
+module upper_shape()
+{
+    union(){
+        difference(){
+            union(){
+                //  upper body
+                translate([ 18.5, 11, 2 ]) cube([ 6.5, 15, 12 ]);   
+                translate([ 0, 11, 2 ]) cube([ 5.5, 15, 12 ]);   
+                translate([ -8, 22, 2 ]) cube([ 49, 4, 12 ]);   
+                translate([ 0, 13, 2 ]) cube([ 25, 13, 12 ]);   
+                }
+                translate([ 12, 18, 0 ]) cylinder( h = 14, r = 7.2, $fn=30 );  // upper belt cutaway
+            }
+
+        translate([ 5.5, 12.5, 0 ]) cylinder( h = 14, r = 1.5, $fn=30 );  
+        translate([ 18.5, 12.5, 0 ]) cylinder( h = 14, r = 1.5, $fn=30 ); 
+        translate([ 4.5, 7.2, 0 ]) cylinder( h = 14, r = 1.7, $fn=30 );  
+        translate([ 20.5, 7.2, 0 ]) cylinder( h = 14, r = 1.5, $fn=30 );  
+
+        translate([ 0, 0, 3 ] ) cube([ 4.5, 8.9, 11 ]);  
+        translate([ 20.5, 0, 2 ] ) cube([ 4.5, 8.7, 12] );  
+        translate([ 1, 0, 3 ] ) cube([ 4.5, 7, 11 ]);  
+        translate([ 19.5, 0, 2 ] ) cube([ 4.5, 7, 12 ]);  
+        translate([ -8, 16, -1 ]) cube([ 8, 10, 15 ]);
+        }
+}
+
+
+module screw_holes(){
+    translate( [ -4 , 28 , 7.5 ] ) rotate([90,0,0]) cylinder( h = 10, r = 1.6, $fn=30);  //screw hole
+    translate( [ 37 , 28 , 7.5 ] ) rotate([90,0,0]) cylinder( h = 10, r = 1.6, $fn=30);  //screw hole
+    translate( [ -4 , 22 , 7.5 ] ) rotate([90,0,0]) cylinder( h = 10, r = 2.9, $fn=30);  //screw hole
+}
+
+module belt_insert_chamfer(){
+    translate([ -2, 10, 10.5 ]) rotate([45,0,0]) cube([ 28, 5, 5 ]);  
+    translate([ 3, -2, 14 ]) rotate([0,45,0]) cube([ 5, 12, 5 ]);  
+    translate([ 15, -2, 14 ]) rotate([0,45,0]) cube([ 5, 12, 5 ]);  
+
+    translate([ 4, 10, 15 ]) rotate([0,45,0]) cube([ 5, 7, 5 ]);  
+    translate([ 13, 10, 15 ]) rotate([0,45,0]) cube([ 5, 6, 5 ]); 
+}
+
+module belt_holders(){
+    translate([ 13, 5, 0 ]) cylinder( h=11, r=3.5, $fn=30 );  // lower belt holder
+    translate([ 12, 18, 0 ]) cylinder( h=11, r=3.5, $fn=30 );  // upper belt holder
+    
+    translate([ 13, 5, 11 ]) cylinder( h=3 , r1=3.5, r2=2.5, $fn=30 );  // lower belt holder cone
+    translate([ 12, 18, 11 ]) cylinder( h=3, r1=3.5, r2=2.5, $fn=30 );  // upper belt holder cone
+    
+    }
+
+
+module final_part(){
+    union(){
+    difference(){ 
+        upper_shape();
+        belt_insert_chamfer(); 
+        screw_holes();
+    }
+    belt_holders();
+    face_plate();
+    }
+}
+
+final_part();
+
+
+
+
+
+
+
+
+