Merged Harry Binnema's improvements

Hardware/Development/Gears/motor_gear.scad

@@ -14,6 +14,9 @@
  *
  * Copyright (C) 2011  Guy 'DeuxVis' P.
  *
+ * August 2013 added 2 extra setscrews to ensure centered usage.
+ * by Harry Binnema. 
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
@@ -88,7 +91,10 @@ union() difference() {
     translate( [0, 0, 12] ) mirror( [0, 0, 1] ) difference() {
       //shaft
       cylinder( r=9, h=15, $fn=40 );
-
+	//adapted to include 3 captive nuts for symmetrical positioning
+	//adpted bij HJ Binnema on August 26 2013.
+	for (i= [0:2]){
+		rotate([0,0,i*120]){
       //captive nut and grub holes
       translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
         //enterance
@@ -98,7 +104,7 @@ union() difference() {
           cylinder( r=6/2+0.5, h=2.6, $fn=6 );
         //grub hole
         translate( [0, 0, 9] ) cylinder( r=3.2/2, h=10, $fn=6 );
-      }
+      }}}
     }
   }
 

Hardware/Development/XZ_axis/Z_carriage.scad

@@ -1,13 +1,20 @@
 // Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
 // Created by Carlosgs (http://carlosgs.es)
 // License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
+ /*
+ * August 2013 changes to design top-part mounting screw at same side as bottom-part.
+ * also started introduced 2nd spindle diameter for a-symmetrical spindles. this is not working yet.
+ * by Harry Binnema. 
+ */
 
 use <../libs/obiscad/bcube.scad>
 use <../libs/build_plate.scad>
 use <../libs/Write/Write.scad>
 
+spindle_motor_diam_top = 26*2;
 spindle_motor_diam = 26*2;
-spindle_holder_thickness = 7;
+spindle_holder_thickness = 8;
+spindle_holder_distance = 46;
 
 bottom_thickness = 4;
 base_width = 20;
@@ -29,7 +36,7 @@ M8_rod_diameter = 8.2;
 
 axis_distance = 21;
 
-wall_thickness = 8;
+wall_thickness = 9;
 wall_height = motor_width;
 wall_width = 54;
 
@@ -58,22 +65,28 @@ module dummySpindle() {
 }
 
 // Derived from Spindle mount for ShapeOko by Misan (http://www.thingiverse.com/thing:26740)
-module spindle_holder_holes(length=50,showSpindle=true) {
+module spindle_holder_holes(length,spindiam, basediam,top_part) {
 	$fn=6;
 
-	translate([20,8,-0.05]) cylinder(r=base_screw_diameter/2,h=length+2,$fn=60);
+	translate([20,8,-0.05]) cylinder(r=basediam/2,h=length+2,$fn=60);
-	translate([-20,8,-0.05]) cylinder(r=base_screw_diameter/2,h=length+2,$fn=60);
+	translate([-20,8,-0.05]) cylinder(r=basediam/2,h=length+2,$fn=60);
-
+	if (top_part){
-	translate([0,38,0]) rotate([0,0,180]) {
+		translate([0,38,0]) rotate([0,0,0]) {
-	
+		translate([0,0,-0.05]) cylinder(r=spindiam/2,h=length+2,$fn=60);
-	translate([0,0,-0.05]) cylinder(r=spindle_motor_diam/2,h=length+2,$fn=60);
+		translate([0,-3,-0.01]) cube([90,3,length+2]);
-
+		translate ([spindiam/2+15,15,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
-	translate([0,0,-0.01]) cube([90,3,length+2]);
+		translate ([spindiam/2+15,-10.5,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
-	
+		}		
-	translate ([36,20,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
+		}
-	translate ([36,14,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
+	else
-	
+		{
-	}
+		translate([0,38,0]) rotate([0,0,180]) {
+		translate([0,0,-0.05]) cylinder(r=spindiam/2,h=length+2,$fn=60);
+		translate([0,0,-0.01]) cube([90,3,length+2]);
+		translate ([spindiam/2+15,20,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
+		translate ([spindiam/2+15,15,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
+		}
+		}
 }
 
 
@@ -161,28 +174,35 @@ module Z_solid_body(top_part=true) {
 			cylinder(r=3+LM8UU_dia/2,h=wall_thickness,$fn=50);
 	}
 
-	// For the screw of the spindle holder
+	// For the claw of the spindle holder
+if(top_part){
 	translate([wall_height/2,wall_width-4,0])
 		translate([0,38,0]) {
-			rotate([0,0,180]) {
+			rotate([0,0,0]) {
-				translate([28,-7,0]) cube([15,20,wall_thickness]);
+				translate([spindle_motor_diam/2,-12.5,0]) cube([25,20,wall_thickness]);
 				
 	// Write text in the front
 	color([0.5,0.5,0.5])
-		if(top_part)
+			rotate([0,0,180]) scale([-1,1,-textHscale])
-			scale([-1,1,-textHscale])
 				writecylinder("CYCLONE",[0,0,-wall_thickness/(2*textHscale)],spindle_motor_diam/2+spindle_holder_thickness,0,font="orbitron.dxf",space=1.1,h=wall_thickness,t=textThickness,center=true,ccw=true);
-		else
+			}
+		}
+}
+else
+translate([wall_height/2,wall_width-4,0])
+		translate([0,38,0]) {
+			
+			rotate([0,0,180]) {
+			translate([spindle_motor_diam/2,-7,0]) cube([25,20,wall_thickness]);
+			color([0.2,0.2,0.5])
 			scale([1,1,textHscale])
 				writecylinder("PCB Factory",[0,0,wall_thickness/(2*textHscale)+1],spindle_motor_diam/2+spindle_holder_thickness,0,font="orbitron.dxf",space=1.1,h=wall_thickness-2,t=textThickness,center=true,ccw=true);
-
 			}
 		}
 }
 
-
 //for display only, doesn't contribute to final object
-build_plate(3,200,200);
+//build_plate(3,200,200);
 
 module Z_carriage(showSpindle=false,top_part=true) {
 
@@ -192,7 +212,7 @@ module Z_carriage(showSpindle=false,top_part=true) {
 				Z_solid_body(top_part);
 				if(top_part) motor_stand_holes_Z();
 				translate([wall_height/2,wall_width-4,0])
-					spindle_holder_holes(wall_thickness,showSpindle);
+					spindle_holder_holes(wall_thickness,spindle_motor_diam,base_screw_diameter,top_part);
 				translate([wall_height/2-Z_smooth_rods_sep/2,Z_threaded_pos,0])
 					linearBearingHolderZ(wall_thickness);
 				translate([wall_height/2+Z_smooth_rods_sep/2,Z_threaded_pos,0])
@@ -218,14 +238,14 @@ module Z_carriage(showSpindle=false,top_part=true) {
 
 module Z_carriage_assembled() {
 	Z_carriage(showSpindle=true,top_part=false);
-	translate([0,0,3+23*2]) rotate([180,0,0]) Z_carriage(showSpindle=false,top_part=true);
+	translate([0,0,3+spindle_holder_distance]) rotate([180,0,0]) Z_carriage(showSpindle=false,top_part=true);
 }
 
 //Z_carriage(top_part=true);
-Z_carriage(top_part=false);
+//Z_carriage(top_part=false);
 
 
-//Z_carriage_assembled();
+Z_carriage_assembled();
 
 
 

Hardware/Development/XZ_axis/motor_gear.scad

@@ -12,7 +12,10 @@
  *  derived from http://www.thingiverse.com/thing:3104
  *  (thanks GilesBathgate) which is under GPL CC license.
  *
- * Copyright (C) 2011  Guy 'DeuxVis' P.
+ * August 2013 added 2 extra setscrews to ensure centered usage.
+ * by Harry Binnema. 
+ *
+* Copyright (C) 2011  Guy 'DeuxVis' P.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -34,8 +37,10 @@ include <MCAD/teardrop.scad>
 include <MCAD/involute_gears.scad>
 
 motor_shaft_diameter=5.4;
-
+pos=15.4; //position hole for grubnut
 nholes = 7;
+shaft_diam=10;
+shaft_height=7;
 
 /* Herringbone gear module, adapted from MCAD/involute_gears */
 module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
@@ -84,19 +89,24 @@ rotate([180,0,0]) union() difference() {
 
     translate( [0, 0, 12] ) mirror( [0, 0, 1] ) difference() {
       //shaft
-      cylinder( r=9, h=7, $fn=40 );
+      cylinder( r=shaft_diam, h=shaft_height, $fn=40 );
 
       //captive nut and grub holes
-      translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
+	for (i=[0:2]){ //3 symmetric grubscrews
-        //enterance
+
-        translate( [0, -3, 14.5] ) cube( [6, 6, 2.6], center=true );
+ 	rotate([0,0,i*120]){     
-        //nut
+ 		translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
-        translate( [0, 0, 13.3] ) rotate( [0, 0, 30] )
+        //entrance for nut
-          cylinder( r=6/2+0.5, h=2.6, $fn=6 );
+          translate( [0, -4.4, pos] ) cube( [5.9, 5.8, 2.45], center=true );
-        //grub hole
+        //nut hole
+        translate( [0, 0, pos-1.2] ) rotate( [0, 0, 30] )
+          cylinder( r=6/2+0.2, h=2.6, $fn=6 );
+        //grub screw hole
         translate( [0, 0, 9] ) cylinder( r=1.5, h=10, $fn=20 );
-      }
+      				}
-    }
+				}
+			}
+   		}
   }
 
   //shaft hole

Hardware/Release/Gears/motor_gear.scad

@@ -14,6 +14,9 @@
  *
  * Copyright (C) 2011  Guy 'DeuxVis' P.
  *
+ * August 2013 added 2 extra setscrews to ensure centered usage.
+ * by Harry Binnema. 
+ *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
  * as published by the Free Software Foundation; either version 2
@@ -88,7 +91,10 @@ union() difference() {
     translate( [0, 0, 12] ) mirror( [0, 0, 1] ) difference() {
       //shaft
       cylinder( r=9, h=15, $fn=40 );
-
+	//adapted to include 3 captive nuts for symmetrical positioning
+	//adpted bij HJ Binnema on August 26 2013.
+	for (i= [0:2]){
+		rotate([0,0,i*120]){
       //captive nut and grub holes
       translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
         //enterance
@@ -98,7 +104,7 @@ union() difference() {
           cylinder( r=6/2+0.5, h=2.6, $fn=6 );
         //grub hole
         translate( [0, 0, 9] ) cylinder( r=3.2/2, h=10, $fn=6 );
-      }
+      }}}
     }
   }
 

Hardware/Release/XZ_axis/Z_carriage.scad

@@ -1,13 +1,20 @@
 // Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
 // Created by Carlosgs (http://carlosgs.es)
 // License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
+ /*
+ * August 2013 changes to design top-part mounting screw at same side as bottom-part.
+ * also started introduced 2nd spindle diameter for a-symmetrical spindles. this is not working yet.
+ * by Harry Binnema. 
+ */
 
 use <../libs/obiscad/bcube.scad>
 use <../libs/build_plate.scad>
 use <../libs/Write/Write.scad>
 
+spindle_motor_diam_top = 26*2;
 spindle_motor_diam = 26*2;
-spindle_holder_thickness = 7;
+spindle_holder_thickness = 8;
+spindle_holder_distance = 46;
 
 bottom_thickness = 4;
 base_width = 20;
@@ -29,7 +36,7 @@ M8_rod_diameter = 8.2;
 
 axis_distance = 21;
 
-wall_thickness = 8;
+wall_thickness = 9;
 wall_height = motor_width;
 wall_width = 54;
 
@@ -58,22 +65,28 @@ module dummySpindle() {
 }
 
 // Derived from Spindle mount for ShapeOko by Misan (http://www.thingiverse.com/thing:26740)
-module spindle_holder_holes(length=50,showSpindle=true) {
+module spindle_holder_holes(length,spindiam, basediam,top_part) {
 	$fn=6;
 
-	translate([20,8,-0.05]) cylinder(r=base_screw_diameter/2,h=length+2,$fn=60);
+	translate([20,8,-0.05]) cylinder(r=basediam/2,h=length+2,$fn=60);
-	translate([-20,8,-0.05]) cylinder(r=base_screw_diameter/2,h=length+2,$fn=60);
+	translate([-20,8,-0.05]) cylinder(r=basediam/2,h=length+2,$fn=60);
-
+	if (top_part){
-	translate([0,38,0]) rotate([0,0,180]) {
+		translate([0,38,0]) rotate([0,0,0]) {
-	
+		translate([0,0,-0.05]) cylinder(r=spindiam/2,h=length+2,$fn=60);
-	translate([0,0,-0.05]) cylinder(r=spindle_motor_diam/2,h=length+2,$fn=60);
+		translate([0,-3,-0.01]) cube([90,3,length+2]);
-
+		translate ([spindiam/2+15,15,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
-	translate([0,0,-0.01]) cube([90,3,length+2]);
+		translate ([spindiam/2+15,-10.5,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
-	
+		}		
-	translate ([36,20,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
+		}
-	translate ([36,14,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
+	else
-	
+		{
-	}
+		translate([0,38,0]) rotate([0,0,180]) {
+		translate([0,0,-0.05]) cylinder(r=spindiam/2,h=length+2,$fn=60);
+		translate([0,0,-0.01]) cube([90,3,length+2]);
+		translate ([spindiam/2+15,20,length/2]) rotate([90,0,0]) cylinder(r=2,h=30);
+		translate ([spindiam/2+15,15,length/2]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
+		}
+		}
 }
 
 
@@ -161,28 +174,35 @@ module Z_solid_body(top_part=true) {
 			cylinder(r=3+LM8UU_dia/2,h=wall_thickness,$fn=50);
 	}
 
-	// For the screw of the spindle holder
+	// For the claw of the spindle holder
+if(top_part){
 	translate([wall_height/2,wall_width-4,0])
 		translate([0,38,0]) {
-			rotate([0,0,180]) {
+			rotate([0,0,0]) {
-				translate([28,-7,0]) cube([15,20,wall_thickness]);
+				translate([spindle_motor_diam/2,-12.5,0]) cube([25,20,wall_thickness]);
 				
 	// Write text in the front
 	color([0.5,0.5,0.5])
-		if(top_part)
+			rotate([0,0,180]) scale([-1,1,-textHscale])
-			scale([-1,1,-textHscale])
 				writecylinder("CYCLONE",[0,0,-wall_thickness/(2*textHscale)],spindle_motor_diam/2+spindle_holder_thickness,0,font="orbitron.dxf",space=1.1,h=wall_thickness,t=textThickness,center=true,ccw=true);
-		else
+			}
+		}
+}
+else
+translate([wall_height/2,wall_width-4,0])
+		translate([0,38,0]) {
+			
+			rotate([0,0,180]) {
+			translate([spindle_motor_diam/2,-7,0]) cube([25,20,wall_thickness]);
+			color([0.2,0.2,0.5])
 			scale([1,1,textHscale])
 				writecylinder("PCB Factory",[0,0,wall_thickness/(2*textHscale)+1],spindle_motor_diam/2+spindle_holder_thickness,0,font="orbitron.dxf",space=1.1,h=wall_thickness-2,t=textThickness,center=true,ccw=true);
-
 			}
 		}
 }
 
-
 //for display only, doesn't contribute to final object
-build_plate(3,200,200);
+//build_plate(3,200,200);
 
 module Z_carriage(showSpindle=false,top_part=true) {
 
@@ -192,7 +212,7 @@ module Z_carriage(showSpindle=false,top_part=true) {
 				Z_solid_body(top_part);
 				if(top_part) motor_stand_holes_Z();
 				translate([wall_height/2,wall_width-4,0])
-					spindle_holder_holes(wall_thickness,showSpindle);
+					spindle_holder_holes(wall_thickness,spindle_motor_diam,base_screw_diameter,top_part);
 				translate([wall_height/2-Z_smooth_rods_sep/2,Z_threaded_pos,0])
 					linearBearingHolderZ(wall_thickness);
 				translate([wall_height/2+Z_smooth_rods_sep/2,Z_threaded_pos,0])
@@ -218,14 +238,14 @@ module Z_carriage(showSpindle=false,top_part=true) {
 
 module Z_carriage_assembled() {
 	Z_carriage(showSpindle=true,top_part=false);
-	translate([0,0,3+23*2]) rotate([180,0,0]) Z_carriage(showSpindle=false,top_part=true);
+	translate([0,0,3+spindle_holder_distance]) rotate([180,0,0]) Z_carriage(showSpindle=false,top_part=true);
 }
 
 //Z_carriage(top_part=true);
-Z_carriage(top_part=false);
+//Z_carriage(top_part=false);
 
 
-//Z_carriage_assembled();
+Z_carriage_assembled();
 
 
 

Hardware/Release/XZ_axis/Z_carriage_old.scad

@@ -1,143 +0,0 @@
-// Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
-// Created by Carlosgs (http://carlosgs.es)
-// License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
-
-use <../libs/obiscad/bcube.scad>
-use <../libs/build_plate.scad>
-use <../libs/Write/Write.scad>
-
-include <./lm8uu_holder.scad>
-
-bottom_thickness = 4;
-base_width = 20;
-base_length = 25;
-base_screw_diameter = 5;
-
-motor_width = 43;
-motor_length = 49; // not used
-motor_screw_distance = 31.3;
-motor_center_diameter = 23;
-
-motor_screw_diameter = 3.7;
-motor_screw_head_diameter = 8;
-
-bearing_diameter = 22.4;
-M8_rod_diameter = 8.2;
-
-axis_distance = 21;
-
-wall_thickness = 5;
-wall_height = motor_width;
-wall_width = 54;
-
-idler_width = 25;
-
-lbearing_holder_length = 23*2;
-
-Z_threaded_pos = motor_width/2+axis_distance;
-
-Z_smooth_rods_sep = 55;
-
-textHscale = 0.8;
-textThickness = 1.5;
-
-// Derived from Spindle mount for ShapeOko by Misan (http://www.thingiverse.com/thing:26740)
-module spindle_holder(length=50,showSpindle=true) {
-	$fn=6;
-	translate([0,38,0]) rotate([0,0,180]) {
-
-	if(showSpindle) scale([1,1,-1]) translate([0,0,-length]) {
-		translate([0,0,85]) color([0.95,0.95,0.95]) cylinder(r=26,h=30,$fn=60);
-		translate([0,0,80]) color([0.95,0.95,0.95]) cylinder(r=10/2,h=5,$fn=60);
-		translate([0,0,-10]) color([0.6,0.6,0.6]) cylinder(r=26,h=90,$fn=60);
-		translate([0,0,-40]) color([0.9,0.9,0.9]) cylinder(r=15/2,h=40,$fn=60);
-		translate([0,0,-50]) color([0.4,0.4,0.4]) cylinder(r=20/2,h=10,$fn=60);
-		translate([0,0,-50-20]) color([0.9,0.9,0.9]) cylinder(r1=1/2,r2=3/2,h=20,$fn=60);
-	}
-
-	difference() {
-	union() {
-	cylinder(r=30,h=length,$fn=60);
-
-	// Write text in the front
-	color([0.5,0.5,0.5]) scale([-1,1,-textHscale]) writecylinder("CYCLONE",[0,0,-length/(3*textHscale)],30,0,font="orbitron.dxf",space=1.1,h=12,t=textThickness,center=true,ccw=true);
-	translate ([-30,0,0]) cube([60,38,length]);
-	translate([28,-7,0]) cube([20,20,length]);
-
-	color([0.5,0.5,0.5]) scale([-1,1,-textHscale]) writecylinder("PCB Factory",[0,0,-length/(1.5*textHscale)],30,0,font="orbitron.dxf",space=1.1,h=14/2,t=textThickness,center=true,ccw=true);
-	translate ([-30,0,0]) cube([60,38,length]);
-	translate([28,-7,0]) cube([20,20,length]);
-
-	}
-	
-	translate([0,0,-0.05]) cylinder(r=26,h=length+2,$fn=60);
-	
-	translate([0,0,-0.01]) cube([90,3,length+2]);
-	
-	
-	translate ([40,20,3*length/4]) rotate([90,0,0]) cylinder(r=2,h=30);
-	translate ([40,20,length/4]) rotate([90,0,0]) cylinder(r=2,h=30);
-	
-	translate ([40,14,3*length/4]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
-	translate ([40,14,length/4]) rotate([90,0,0]) cylinder(r=3.5,h=4,$fn=6);
-
-	difference() {
-		translate ([-30+15,0,-0.1]) cube([30,38.1,30]);
-		cylinder(r=26+1,h=length,$fn=60);
-	}
-	
-	}
-	}
-}
-
-module motor_stand_no_base_Z(with_motor=true) {
-difference() {
-  translate([wall_height/2,wall_width/2,wall_thickness/2])
-    bcube([wall_height,wall_width,wall_thickness],cr=4,cres=10);
-
-  // Position relative to motor shaft
-  translate([motor_width/2,motor_width/2,wall_thickness/2]) {
-    if(with_motor) {
-    // Hole for the motor shaft
-    translate([0,-wall_width/2,0])
-      cube([20,wall_width,10*wall_thickness],cr=4,cres=10,center=true);
-    cylinder(r=motor_center_diameter/2,h=10*wall_thickness,center=true,$fn=40);
-
-    // Screws for holding the motor
-    for(i=[-1,1]) for(j=[-1,1])
-    translate([i*motor_screw_distance/2,j*motor_screw_distance/2,0]) {
-      cylinder(r=motor_screw_diameter/2,h=10*wall_thickness,center=true,$fn=40);
-      cylinder(r=motor_screw_head_diameter/2,h=10*wall_thickness,center=false,$fn=40);
-    }
-    } // End if with motor
-
-    // Bearing holes
-    rotate([0,0,0]) translate([0,axis_distance,0]) {
-      cylinder(r=(M8_rod_diameter*2)/2,h=10*wall_thickness,center=true,$fn=40);
-      cylinder(r=bearing_diameter/2,h=10*wall_thickness,center=false,$fn=60);
-
-    }
-
-  } // End of translate relative to motor shaft
-} // End of difference
-}
-
-module motor_stand_Z(with_motor=true) {
-  union() {
-    motor_stand_no_base_Z(with_motor);
-  }
-}
-
-//for display only, doesn't contribute to final object
-build_plate(3,200,200);
-
-module Z_carriage(showSpindle=false) {
-	rotate([0,0,-90]) translate([-wall_height/2,-Z_threaded_pos,0]) {
-		motor_stand_Z();
-		translate([wall_height/2,wall_width-4,0]) spindle_holder(lbearing_holder_length,showSpindle);
-		translate([wall_height/2-Z_smooth_rods_sep/2,Z_threaded_pos,lbearing_holder_length/2]) rotate([-90,0,0]) lm8uu_bearing_holder_XZ(lbearing_holder_length);
-		translate([wall_height/2+Z_smooth_rods_sep/2,Z_threaded_pos,lbearing_holder_length/2]) rotate([-90,0,0]) lm8uu_bearing_holder_XZ(lbearing_holder_length);
-	}
-}
-
-Z_carriage(showSpindle=false);

Hardware/Release/XZ_axis/motor_gear.scad

@@ -12,7 +12,10 @@
  *  derived from http://www.thingiverse.com/thing:3104
  *  (thanks GilesBathgate) which is under GPL CC license.
  *
- * Copyright (C) 2011  Guy 'DeuxVis' P.
+ * August 2013 added 2 extra setscrews to ensure centered usage.
+ * by Harry Binnema. 
+ *
+* Copyright (C) 2011  Guy 'DeuxVis' P.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -34,8 +37,10 @@ include <MCAD/teardrop.scad>
 include <MCAD/involute_gears.scad>
 
 motor_shaft_diameter=5.4;
-
+pos=15.4; //position hole for grubnut
 nholes = 7;
+shaft_diam=10;
+shaft_height=7;
 
 /* Herringbone gear module, adapted from MCAD/involute_gears */
 module herringbone_gear( teeth=12, circles=0, shaft=5 ) {
@@ -84,19 +89,24 @@ rotate([180,0,0]) union() difference() {
 
     translate( [0, 0, 12] ) mirror( [0, 0, 1] ) difference() {
       //shaft
-      cylinder( r=9, h=7, $fn=40 );
+      cylinder( r=shaft_diam, h=shaft_height, $fn=40 );
 
       //captive nut and grub holes
-      translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
+	for (i=[0:2]){ //3 symmetric grubscrews
-        //enterance
+
-        translate( [0, -3, 14.5] ) cube( [6, 6, 2.6], center=true );
+ 	rotate([0,0,i*120]){     
-        //nut
+ 		translate( [0, 20, 3.5] ) rotate( [90, 0, 0] ) union() {
-        translate( [0, 0, 13.3] ) rotate( [0, 0, 30] )
+        //entrance for nut
-          cylinder( r=6/2+0.5, h=2.6, $fn=6 );
+          translate( [0, -4.4, pos] ) cube( [5.9, 5.8, 2.45], center=true );
-        //grub hole
+        //nut hole
+        translate( [0, 0, pos-1.2] ) rotate( [0, 0, 30] )
+          cylinder( r=6/2+0.2, h=2.6, $fn=6 );
+        //grub screw hole
         translate( [0, 0, 9] ) cylinder( r=1.5, h=10, $fn=20 );
-      }
+      				}
-    }
+				}
+			}
+   		}
   }
 
   //shaft hole