// http://www.reprap.org/wiki/Prusa_Mendel
// http://github.com/prusajr/PrusaMendel
-// PLEASE SELECT ONE OF THE CONFIGURATIONS BELOW
-// BY UN-COMMENTING IT
-
include <inc/metric.scad>;
include <inc/conf_bushing.scad>;
//T2.5
belt_tooth_distance = 2.5;
-belt_tooth_ratio = 0.5;
+belt_tooth_ratio = 0.75;
//T5 (strongly discouraged)
//belt_tooth_distance = 5;
// [outer_diameter, width, inner_diameter, uses_guide]
// 608 [standard skate bearings] with bearing guide
bearing_608 = [22, 7, 8, 1];
-//608 bearings with fender washers
+//608 bearings with fender washers. Not good at all, the belt brushes against the carriage
bearing_608_washers = [22, 10, 8, 0];
-// 624 [roughly same diameter as pulley, makes belt parallel so its prettier]
-bearing_624 = [16, 5, 4, 1];
-// two 624 - for use without bearing guides. My favourite [ax]
-bearing_624_double = [16, 10, 4, 0];
+// one 625 with guides
+bearing_625 = [16, 5, 5, 1];
+// two 625 - for use without bearing guides.
+bearing_625_double = [16, 10, 5, 0];
+
+// those two here are really good:
+bearing_624_double = [13, 9, 4, 0];
+// this one has roughly same diameter as pulley, makes belt parallel so its prettier
+bearing_623_double = [10, 8, 3, 0];
idler_bearing = bearing_624_double;
+//Select carriage lenght
+// 30 for single carriage extruder (two holes with centers 30mm apart)
+// 50 for wade or single with fan (three holes, 30-20)
+// 80 for full length carriage (four holes, 30-20-30)
+
+carriage_l_base = 50;
+
// Fillets ********************************************************************
// mostly cosmetic, except z axis.
// 0 = no fillets
include <configuration.scad>
-module zmotorholder(thickness=23, bottom_thickness=5){
+module zmotorholder(thickness=(i_am_box == 0 ? 38 : 23), bottom_thickness=5){
difference(){
union(){
// Motor holding part
difference(){
union(){
- zrodholder(thickness=thickness, xlen=45, ylen=45, zdelta=((i_want_to_use_single_plate_dxf_and_make_my_z_weaker == 0) ? 0 : 5));
+ zrodholder(thickness=thickness, xlen=45, ylen=44, zdelta=((i_want_to_use_single_plate_dxf_and_make_my_z_weaker == 0) ? 0 : 5));
translate([board_to_xz_distance, board_to_xz_distance, 0]) {
nema17(places=[0, 1, 1, 1], h=bottom_thickness + layer_height, $fn=23, shadow=layer_height + 2);
}
}
-module zrodholder(thickness=15, bottom_thickness=5, ylen=42, xlen=34, zdelta=0){
+module zrodholder(thickness=(i_am_box == 0 ? 14 : 15), bottom_thickness=5, ylen=44, xlen=34, zdelta=0){
holder_inner_r = 9;
+ holder_inner_r2 = 2;
difference(){
union(){
difference(){
union(){
//piece along the flat side of a board
cube_fillet([14, ylen, bottom_thickness], vertical=[8, 3, 0, 0]);
- cube_fillet([5, ylen, thickness], vertical=[3, 3, 0, 0], top = [thickness/2, 0, 0, 5]);
+ cube_fillet([5, ylen, thickness], vertical=[3, 3, 0, 0], top = [thickness / 1.7, 0, 0, 5]);
//hole for Z axis is thru this
cube_fillet([xlen, 14, bottom_thickness], vertical=[3, 0, 0, 3]);
- translate([14,14,0]) {
+ translate([14, 14, 0]) {
//large fillet that makes it stiffer by lot. Thanks to Marcus Wolschon
difference(){
- cube([holder_inner_r,holder_inner_r,bottom_thickness]);
+ cube([holder_inner_r, holder_inner_r, bottom_thickness]);
translate([holder_inner_r, holder_inner_r, -0.5])
cylinder(r=holder_inner_r, h=bottom_thickness + 1);
}
}
+ translate([5, 5, 0]) {
+ difference(){
+ cube([holder_inner_r2, holder_inner_r2, thickness - 5.5]);
+ translate([holder_inner_r2, holder_inner_r2, -0.5])
+ cylinder(r=holder_inner_r2, h=thickness + 1, $fn=20);
+ }
+ }
//piece along cut side of the board
if (i_am_box == 1) {
translate([-board_thickness, 0, 0])
- cube_fillet([board_thickness + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness]);
+ cube_fillet([board_thickness + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness], $fn=99);
} else {
translate([-board_thickness/2, 0, 0])
- cube_fillet([board_thickness/2 + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness]);
+ cube_fillet([board_thickness/2 + board_to_xz_distance + bushing_z[0], 5, thickness], radius=2, top = [0, 0, 0, thickness], $fn=99);
}
//smooth rod insert
translate([board_to_xz_distance - z_delta, 9, 0])
//smooth rod hole
translate([board_to_xz_distance - z_delta, 9, -1]) cylinder_poly(h=board_thickness+20, r=bushing_z[0] + single_wall_width / 4);
//inside rouned corner
- translate([0, 5, -1]) cylinder(r=1.2, h=100, $fn=8);
+ translate([0, 5, -1]) cylinder(r=0.8, h=100, $fn=8);
//side screw
//translate([-board_thickness/2, 0, thickness/2-1.5]) rotate([-90, 0, 0]) screw(h=30, r_head=4);
//front screws
if (i_am_box != 1) {
//single plate has both screws on front
translate([16, 35, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
- screw(head_drop=14, h=122, r_head=4.5);
+ plate_screw();
}
translate([16, 15, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
- screw(head_drop=14, h=122, r_head=4.5);
+ plate_screw();
+ }
+ //motor mount has third screw
+ translate([16, 25, bottom_thickness + 4.5 + zdelta + 20]) rotate([0, -90, 0]) {
+ plate_screw();
}
} else {
translate([16, 30, bottom_thickness+4]) rotate([0, -90, 0]) {
- screw(head_drop=12, h=122, r_head=4);
+ plate_screw();
}
//side screw
- translate([-board_thickness/2, 0, thickness/2]) rotate([-90, 0, 0]) screw(h=30, r_head=4.5, head_drop=1);
+ translate([-board_thickness/2, -11, thickness/2]) rotate([-90, 0, 0]) plate_screw();
}
}
}
}
}
-translate([0, -2, 0]) mirror([0, 1, 0]) zmotorholder();
-translate([0, 2, 0]) zmotorholder();
-translate([23, -64, 0]) zrodholder();
-translate([23, 64, 0]) mirror([0, 1, 0]) zrodholder();
+translate([10, -50, 0]) zmotorholder();
+translate([0, 50, 0]) mirror([0, 1, 0]) zmotorholder();
+translate([67, 14, 0]) rotate([0,0,90]) zrodholder();
+translate([77, -14, 0]) rotate([0, 0, -90]) mirror([0, 1, 0]) zrodholder();
HCoop / clinton / prusa3.git / commitdiff