-// PRUSA iteration3
-// Z axis
-// GNU GPL v3
-// Josef Průša <josefprusa@me.com>
-// Václav 'ax' Hůla <axtheb@gmail.com>
-// http://www.reprap.org/wiki/Prusa_Mendel
-// http://github.com/prusajr/PrusaMendel
-
-include <configuration.scad>
-
-module zmotorholder(thickness=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));
- translate([board_to_xz_distance, board_to_xz_distance, 0]) {
- nema17(places=[0, 1, 1, 1], h=bottom_thickness + layer_height);
- }
- }
-
- // motor screw holes
- translate([board_to_xz_distance, board_to_xz_distance, thickness]) {
- mirror([0, 0, 1]) translate([0, 0, thickness-8])
- nema17(places=[0, 1, 1, 1], holes=true, h=bottom_thickness + 1, shadow=5);
- }
- }
- }
- }
-}
-
-
-module zrodholder(thickness=15, bottom_thickness=5, ylen=42, xlen=34, zdelta=0){
- holder_inner_r = 9;
- 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]);
- //hole for Z axis is thru this
- cube_fillet([xlen, 14, bottom_thickness], vertical=[3, 0, 0, 3]);
- 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]);
- translate([holder_inner_r, holder_inner_r, -0.5])
- cylinder(r=holder_inner_r, h=bottom_thickness + 1);
- }
- }
- //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]);
- } 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]);
- }
- //smooth rod insert
- translate([board_to_xz_distance - z_delta, 9, 0]) intersection() {
- cylinder(h=bottom_thickness + layer_height, r=(bushing_z[0] + 5 * single_wall_width));
- if (bushing_z[0] < 5) {
- translate([0, -5 , bottom_thickness / 2]) cube([20, 20, bottom_thickness + 10], center=true);
- } else {
- translate([0, -bushing_z[0], bottom_thickness / 2]) cube([bushing_z[0] * 4, bushing_z[0] * 4, bottom_thickness + 10], center=true);
- }
- }
- }
- //smooth rod hole
- translate([board_to_xz_distance - z_delta, 9, -1]) cylinder_poly(h=board_thickness+20, r=bushing_z[0]);
- // cutout
- translate([board_to_xz_distance-1, 5+(bushing_z[0]), 0.4]) cube([2, 10, 100]);
- //inside rouned corner
- translate([0, 5, -1]) cylinder(r=1.2, 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, 35.5, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
- screw(head_drop=14, h=122, r_head=4.5);
- }
- translate([16, 15.5, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
- screw(head_drop=14, h=122, r_head=4.5);
- }
- } else {
- translate([16, 30, bottom_thickness+4]) rotate([0, -90, 0]) {
- screw(head_drop=12, h=122, r_head=4);
- }
- //side screw
- translate([-board_thickness/2, 0, thickness/2]) rotate([-90, 0, 0]) screw(h=30, r_head=4.5, head_drop=1);
- }
- }
- }
- }
-}
-translate([0, -2, 0]) mirror([0, 1, 0]) zmotorholder();
-translate([0, 2, 0]) zmotorholder();
-translate([21, -62, 0]) zrodholder();
-translate([20, 62, 0]) mirror([0, 1, 0]) zrodholder();
+// PRUSA iteration3
+// Z axis
+// GNU GPL v3
+// Josef Průša <josefprusa@me.com>
+// Václav 'ax' Hůla <axtheb@gmail.com>
+// http://www.reprap.org/wiki/Prusa_Mendel
+// http://github.com/josefprusa/Prusa3
+
+// ThingDoc entries
+/**
+ * @id zMotorHolder
+ * @name Z Axis Motor Holder
+ * @category Printed
+ */
+
+/**
+ * @id zRodHolder
+ * @name Z Axis Rod Holder
+ * @category Printed
+ */
+
+// todo
+
+// - fix motor holder wall removal so it is sensible and actually
+// removes the right thing
+// - fix changing board_thickness, add way to specify # of bolts in
+// side of frame (assume even spacing for now)
+
+include <configuration.scad>
+
+module zmotorholder(thickness=(frame_type == frame_single ? 38 : 23), bottom_thickness=5){
+ position_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
+ position_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
+ difference(){
+ union(){
+ // Motor holding part
+ difference(){
+ union(){
+ zrodholder(thickness=thickness, xlen=45 + zmotor_delta_x + zaxis_delta_x, ylen=48 + 5 + zmotor_delta_y + zaxis_delta_y, zdelta=((i_want_to_use_single_plate_dxf_and_make_my_z_weaker == 0) ? 0 : 5), bottom_x = 50 + zaxis_delta_x + zmotor_delta_x, bottom_y = 15 + zmotor_delta_y + zaxis_delta_y, am_top=0, bottom_thickness=bottom_thickness);
+ translate([position_x, position_y, 0]) {
+ nema17(places=[1, 1, 1, 1], h=bottom_thickness + layer_height, $fn=23, shadow=layer_height + 2);
+ }
+ }
+ // remove any interfering walls
+ translate([position_x, position_y, layer_height + 2 + 21 +3]) {
+ cube([43 + zmotor_delta_x + zaxis_delta_x,43,42], center = true);
+ }
+
+ // motor rotor clearance
+ translate([position_x, position_y, 0]) {
+ cylinder(r=11,h=20, center = true);
+ }
+
+ // motor screw holes
+
+ // FIXME: y = board_to_xz distance looks supicious --
+ // the smooth rod is offset by a fixed amount so why
+ // would the motor mount be moved in both directions
+ // instead of just away from the frame? X-axis does
+ // not use this to offset the leadscrew hole either.
+ translate([position_x, position_y, thickness]) {
+ mirror([0, 0, 1]) translate([0, 0, thickness-8])
+ #nema17(places=[1, 1, 1, 1], holes=true, h=bottom_thickness + 1, $fn=small_hole_segments);
+ //shadow=-6 + layer_height);
+ }
+ }
+ }
+ }
+}
+
+
+module zrodholder(thickness=(frame_type == frame_single ? 14 : 15), bottom_thickness=5, ylen=44, xlen=34, zdelta=0, bottom_y=14, bottom_x=14, am_top=1){
+ holder_inner_r = 9;
+ holder_inner_r2 = 2;
+ smooth_rod_insert_radius = bushing_z[0] + 5 * single_wall_width;
+ difference(){
+ union(){
+ difference(){
+ union() {
+ //piece along the flat side of a board
+ cube_fillet([bottom_x, ylen, bottom_thickness], vertical=[8, 3, 0, 0]);
+ if (frame_type == frame_alu) {
+ top_radius = am_top ? thickness : thickness / 3;
+ cube_fillet([5, ylen, thickness], vertical=[0, 0, 0, 0], top = [top_radius, 0, 0, 0]);
+
+ // FIXME: make rear/top bit optional, but don't remove entirely
+ // (printer seems to make less noise with the rear bit)
+ %if (am_top) {
+ // rear bracket
+ translate ([-board_thickness - 5, 0, 0])
+ cube_fillet([5, ylen, thickness], vertical=[0, 0, 0, 0], top = [top_radius, 0, 0, 0]);
+ translate ([-board_thickness, 5, 0])
+ cube ([board_thickness, ylen - 6, bottom_thickness/2]);
+ }
+ }
+ else {
+ 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 + zaxis_delta_x, bottom_y, bottom_thickness], vertical=[3, 0, 0, 3]);
+ if (bottom_x < board_to_xz_distance - z_delta + zaxis_delta_x) {
+ translate([bottom_x, bottom_y, 0]) {
+ //large fillet that makes it stiffer by lot. Thanks to Marcus Wolschon
+ difference(){
+ 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);
+ }
+ }
+ }
+ if (frame_type != frame_alu) {
+ 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);
+ }
+ }
+ }
+ // leadscrew bearing hole is cut from this
+ if (am_top) {
+ lead_bearing_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
+ lead_bearing_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
+ translate ([lead_bearing_x, lead_bearing_y, 0]) cylinder (d = bearing_608[0] + 1 + 2, h = bearing_608[2] + layer_height*4);
+ }
+ //piece along cut side of the board
+ if (frame_type == frame_box) {
+ 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], $fn=99);
+ } else if (frame_type == frame_alu) {
+ side_thickness = 5.0;// - zaxis_delta_y;
+
+ translate ([0, 0 /* zaxis_delta_y */, 0]) {
+ // back
+ translate([-board_thickness, 0, 0]) {
+ cube_fillet([board_thickness, side_thickness, thickness], vertical = [0, 0, 0, 0], top = [0, 0, 0, 0]);
+ }
+
+ // front
+ //cube_fillet([am_top ? board_to_xz_distance + zaxis_delta_x - smooth_rod_insert_radius : xlen + zaxis_delta_x , side_thickness, thickness], vertical = [2, 0, 0, 0], top = [0, 0, 0, thickness]);
+ cube_fillet([am_top ? board_to_xz_distance + zaxis_delta_x - smooth_rod_insert_radius : xlen , side_thickness, thickness / (am_top ? 1 : 1.5)], vertical = [2, 0, 0, 0], top = [0, 0, 0, thickness]);
+
+ // extra support for motor
+ if (!am_top) {
+ translate ([0, ylen - side_thickness, 0]) cube_fillet([xlen/* board_to_xz_distance + zaxis_delta_x - smooth_rod_insert_radius */ , side_thickness, thickness/1.5], vertical = [2, 0, 0, 0], top = [0, 0, 0, thickness]);
+ }
+ }
+
+ // extra support along edge of smooth rod hole
+ radius_diff = smooth_rod_insert_radius - bushing_z[0];
+ hull () {
+ translate([-board_thickness/3, -zaxis_delta_y/3, 0]) {
+ cube_fillet([board_thickness/3 + board_to_xz_distance + zaxis_delta_x - bushing_z[0] , -zaxis_delta_y/3 , thickness/2], vertical = [2, 0, 4, 0], top = [0, 0, 4, thickness/2]);
+ }
+ translate([board_to_xz_distance/2, -zaxis_delta_x + radius_diff/6, 0]) {
+ cube_fillet([board_to_xz_distance/2 + zaxis_delta_x + smooth_rod_insert_radius*0.75, radius_diff/3 , bottom_thickness*2], vertical = [2, 0, 4, bushing_z[0] * smooth_rod_insert_radius/bushing_z[0]], top = [0, 0, 2, thickness/4]);
+ }
+ }
+ } 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], $fn=99);
+ }
+ //smooth rod insert
+ translate([board_to_xz_distance - z_delta + zaxis_delta_x, 9 + zaxis_delta_y, 0])
+ cylinder(h=bottom_thickness * (am_top ? 1.75 : 1.75), r=smooth_rod_insert_radius);
+ }
+
+ // === difference ===
+
+ //smooth rod hole
+ #translate([board_to_xz_distance - z_delta + zaxis_delta_x, 9 + zaxis_delta_y, -1]) cylinder(h=am_top ? thickness+20 : bottom_thickness, r=bushing_z[0] + single_wall_width / 4);
+ //inside rouned corner
+ if (frame_type != frame_alu) {
+ translate([0, 5, -1]) cylinder(r=0.8, h=100, $fn=8);
+ }
+
+ // leadscrew hole
+ if (am_top) {
+ lead_bearing_y = board_to_xz_distance + zaxis_delta_y + zmotor_delta_y;
+ lead_bearing_x = board_to_xz_distance + zaxis_delta_x + zmotor_delta_x;
+ translate ([lead_bearing_x, lead_bearing_y, 0]) {
+ difference () {
+ union () {
+ translate ([0, 0, 1]) cylinder (d = 10.8, h = bearing_608[2]*2);
+ translate ([0, 0, -1]) cylinder (d = 23, h = bearing_608[2]+1);
+ }
+ }
+ }
+ }
+
+ //front screws
+ if (frame_type == frame_single) {
+ //single plate has both screws on front
+ translate([16, 35, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
+ plate_screw();
+ }
+ translate([16, 15, bottom_thickness + 4.5 + zdelta]) rotate([0, -90, 0]) {
+ plate_screw();
+ }
+ //motor mount has third screw
+ translate([16, 25, bottom_thickness + 4.5 + zdelta + 20]) rotate([0, -90, 0]) {
+ plate_screw();
+ }
+ } else if (frame_type == frame_alu) {
+ // three screws on front
+ translate([18, ylen - board_thickness/2, bottom_thickness/2 + board_thickness/2 + zdelta]) rotate([0, -90, 0]) plate_screw();
+ translate([18, 5 + board_thickness/2, bottom_thickness/2 + board_thickness/2 + zdelta]) rotate([0, -90, 0]) plate_screw();
+ translate([18, 5 + board_thickness/2, thickness - board_thickness/2]) rotate([0, -90, 0])
+ plate_screw();
+
+ // motor mount screw for opposite extrusion
+ translate([18, ylen - board_thickness/2, thickness - board_thickness/2]) rotate([0, -90, 0])
+ plate_screw();
+
+ // back plate
+ translate([-board_thickness-18, ylen - board_thickness/2, thickness - board_thickness/2]) rotate([0, 90, 0])
+ plate_screw();
+ translate([-board_thickness-18, 5 + board_thickness/2, thickness - board_thickness/2]) rotate([0, 90, 0])
+ plate_screw();
+ translate([-board_thickness-18, ylen - board_thickness/2, bottom_thickness/2 + board_thickness/2 + zdelta]) rotate([0, 90, 0]) plate_screw();
+ #translate([-board_thickness-18, 5 + board_thickness/2, bottom_thickness/2 + board_thickness/2 + zdelta]) rotate([0, 90, 0]) plate_screw();
+
+ //side screws
+ #translate([-board_thickness/2, -13, thickness-board_thickness/2]) rotate([-90, 0, 0]) plate_screw();
+ translate([-board_thickness/2, -13, bottom_thickness/2 + board_thickness/2 + zdelta]) rotate([-90, 0, 0]) plate_screw();
+ } else if (frame_type == frame_box) {
+ translate([16, 30, bottom_thickness+4]) rotate([0, -90, 0]) {
+ plate_screw();
+ }
+ //side screw
+ translate([-board_thickness/2, -11, thickness/2]) rotate([-90, 0, 0]) plate_screw();
+ }
+ }
+ }
+ }
+}
+
+if (frame_type == frame_alu) {
+ // 2020 aluminum frame parts are larger
+ translate([0, -60, 0]) zmotorholder(thickness=55, bottom_thickness=6);
+ translate([0, 60, 0]) mirror([0, 1, 0]) zmotorholder(thickness=55, bottom_thickness=6);
+
+ translate([110 + board_thickness, board_thickness+10, 0]) rotate([0,0,90]) zrodholder(thickness=board_thickness * 2 + 5, ylen = board_thickness * 2 + 10, bottom_x=48, bottom_thickness=6);
+ translate([110 + board_thickness, -(board_thickness+10), 0]) rotate([0, 0, -90]) mirror([0, 1, 0]) zrodholder(thickness=board_thickness * 2 + 5, ylen = board_thickness * 2 + 10, bottom_x=48, bottom_thickness=6);
+
+}
+else {
+ 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 / blobdiff