include <utils.scad>
-//tongue_w = 11.92 + 0.4;
-
usb_w = 12.01 + 0.19;
usb_wall_w = 0.51;
usb_tongue_d = 8.97 - 0.2;
usb_wall_h = 4.54 - 2.04;
usb_ceil_th = 0.425;
-side_wall_th = 1.5; // XXXX rename wall_th
+wall_th = 1.5; // XXXX rename wall_th
board_l = 17.56 + 0.2;
board_w = 19.14 + 0.2;
front_wall_th = 0.75;
// egress_w = 8.0;
-wall_y_min = -board_l - side_wall_th; // XXXX remove
+wall_y_min = -board_l - wall_th;
ceil_y_min = wall_y_min - 5;;
small_walls = [
chip_cutout = [[ -sw_to_edge + 4.20, -3.75 ],
[ -sw_to_edge + 11.95, -11.90 ]];
-strain_w = 2.0 + 0.5;
-strain_t = 1.0 + 0.5;
+strain_w = 3.5 + 0.5;
+strain_t = 1.5 + 0.5;
strain_pitch_across = 5;
strain_pitch_along = 10;
strain_groove_d = 2;
-strain_groove_w = 3;
+strain_groove_w = 4.5;
+strain_around = [2.25, 2.00];
cover_strap_c_d_y = 5.5; // from front of board
cover_registration_sz_y = 2;
cover_registration_sz_z = 3;
+midbot_registraton_sz_x = 3;
cable_space_z = 6;
-cable_dia = 5;
+cable_dia = 6;
bottom_floor_th = 1.5;
fit_gap_z = 0.5;
cover_ceil_th = 0.9;
-cover_strap_sz_x = side_wall_th * 3.5;
+cover_strap_sz_x = wall_th * 3.5;
// calculated
strap_w = strain_w;
-cover_strap_cutout_z = side_wall_th;
+cover_strap_cutout_z = wall_th;
middle_top_z = usb_wall_h;
middle_base_z = -board_th;
bottom_base_z = middle_base_z - cable_space_z - bottom_floor_th;;
front_y_max = front_wall_th;
-main_y_min = -board_l - side_wall_th;
+main_y_min = -board_l - wall_th;
strain_0_y_c = main_y_min - strain_w/2;
strain_1_y_c = strain_0_y_c - strain_pitch_along;
-total_y_min = strain_1_y_c - strain_w/2 - side_wall_th;
+total_y_min = strain_1_y_c - strain_w/2 - wall_th;
bottom_wall_top_z = (middle_top_z + middle_base_z) * 0.5 - fit_gap_z/2;
cover_wall_bot_z = (middle_top_z + middle_base_z) * 0.5 + fit_gap_z/2;
cover_top_z = middle_top_z + cover_ceil_th;
-middle_side_wall_x = +board_w/2 + side_wall_th;
-total_side_wall_x = middle_side_wall_x + side_wall_th + side_x_gap;
+middle_side_wall_x = +board_w/2 + wall_th;
+total_side_wall_x = middle_side_wall_x + wall_th + side_x_gap;
cover_registration_c_dy = -cover_strap_c_d_y - strap_w/2
- - side_wall_th - cover_registration_sz_y/2;
+ - wall_th - cover_registration_sz_y/2;
midbot_registration_sz_y = cover_registration_sz_y;
-midbot_registration_y_min = total_y_min + side_wall_th*2;
+midbot_registration_sz_z = cover_registration_sz_z;
+midbot_registration_y_min = total_y_min + wall_th*2;
midbot_registration_y_max = midbot_registration_y_min
+ midbot_registration_sz_y;
midbot_registration_y_around_max = midbot_registration_y_max
- + side_wall_th*2;
+ + wall_th*2;
+midbot_registration_bottom_x = board_w/2 - midbot_registraton_sz_x;
+
+midbot_strap_c_y = 0.5 * (strain_0_y_c + strain_1_y_c);
module BothSides(){
for (m=[0,1]) {
BothSides(){
translate([ -total_side_wall_x, y_c, z ])
rotate([0, rot, 0])
- cube([ side_wall_th,
+ cube([ wall_th,
strap_w,
10 ],
center=true);
module BottomStrapCutouts(y_c){
NormalStrapCutouts(y_c, bottom_base_z, -45);
}
-// XXXX check strap width
-// XXXX check cable diameter
-// XXXX need rear strap
-// XXXX need bottom-to-middle registration
module CoverStrapCutouts(){
BothSides(){
translate([ -total_side_wall_x, -cover_strap_c_d_y, cover_top_z ])
module FrontWallsPlan(slop) {
BothSides(){
- rectfromto([ -board_w/2 - side_wall_th, 0 ],
- [ -usb_w/2 - slop, front_wall_th ]);
+ rectfromto([ -board_w/2 - wall_th, 0 ],
+ [ -usb_w/2 - slop, front_wall_th ]);
}
}
module MiddleSmallWallsPlan() {
BothSides(){
rectfromto([ -usb_w/2, -0.01 ],
[ 0.1, usb_tongue_d ]);
- rectfromto([ -board_w/2 - side_wall_th, 0 ],
- [ 0.1, ceil_y_min ]);
+ rectfromto([ -board_w/2 - wall_th, 0 ],
+ [ 0.1, ceil_y_min ]);
}
rectfromto(chip_cutout[0], chip_cutout[1]);
}
}
module MiddleMainWallsPlan() {
BothSides(){
- rectfromto([ -board_w/2 - side_wall_th, 0 ],
- [ -board_w/2, wall_y_min ]);
+ rectfromto([ -board_w/2 - wall_th, 0 ],
+ [ -board_w/2, wall_y_min ]);
}
FrontWallsPlan(usb_tongue_w_slop);
- rectfromto([ -board_w/2 - side_wall_th + 0, - board_l ],
- [ +board_w/2 + side_wall_th, total_y_min ]);
+ rectfromto([ -board_w/2 - wall_th + 0, - board_l ],
+ [ +board_w/2 + wall_th, total_y_min ]);
}
+module RegistrationsMinkowski(){
+ minkowski(){
+ cube([ 1, fit_gap_y*2, fit_gap_z*2 ], center=true);
+ children();
+ }
+}
module CoverRegistrations(){
linextr_y_xz(cover_registration_c_dy - strap_w/2,
cover_registration_c_dy + strap_w/2) {
}
}
}
+module MidBotRegistrations(){
+ linextr_y_xz(midbot_registration_y_min,
+ midbot_registration_y_max) {
+ BothSides(){
+ rectfromto([ midbot_registration_bottom_x, middle_base_z + 0.1 ],
+ [ middle_side_wall_x, middle_base_z
+ - midbot_registration_sz_z ]);
+ }
+ }
+}
+module MiddleStrainHoles(){
+ BothSides(){
+ for (y_c = [strain_0_y_c, strain_1_y_c]) {
+ translate([strain_pitch_across/2, y_c, 0])
+ square([ strain_t, strain_w ], center=true);
+ }
+ }
+}
module Middle(){ ////toplevel
difference(){
union(){
linextr(cover_wall_bot_z, middle_top_z)
rectfromto([ -(board_w/2 + 0.1), total_y_min ],
[ -total_side_wall_x, main_y_min - fit_gap_y ]);
+ MidBotRegistrations();
}
- for (y_c = [strain_0_y_c, strain_1_y_c]) {
- for (x_c = [-1,+1] * strain_pitch_across/2) {
- translate([x_c, y_c, 0])
- linextr(-20, 20)
- square([ strain_t, strain_w ], center=true);
- }
- }
+ linextr(-20, 20)
+ MiddleStrainHoles();
linextr_y_xz(total_y_min-1, main_y_min)
translate([0, middle_base_z])
scale([1, strain_groove_d/strain_groove_w])
circle(strain_groove_w/2, $fn = 8);
+ NormalStrapCutouts(midbot_strap_c_y,
+ middle_top_z, 45);
}
}
module MiddlePrint(){ ////toplevel
}
module MiddleElevationForCutout(){
- rectfromto([ -(middle_side_wall_x + side_x_gap), middle_base_z ],
+ rectfromto([ -(middle_side_wall_x + side_x_gap),
+ middle_base_z - fit_gap_z ],
[ +(middle_side_wall_x + side_x_gap), middle_top_z ]);
}
module BottomMainElevation(){
BottomMainElevation();
}
- linextr_y_xz(total_y_min + side_wall_th,
- front_y_max - side_wall_th)
+ linextr_y_xz(midbot_registration_y_around_max,
+ front_y_max - wall_th)
rectfromto([ -board_w/2, bottom_base_z + bottom_floor_th ],
[ +board_w/2, 20 ]);
+ linextr_y_xz(total_y_min + wall_th,
+ front_y_max - wall_th)
+ rectfromto([ -midbot_registration_bottom_x,
+ bottom_base_z + bottom_floor_th ],
+ [ +midbot_registration_bottom_x, 20 ]);
+
linextr_y_xz(total_y_min - 1,
- total_y_min + side_wall_th + 1){
+ total_y_min + wall_th + 1){
translate([ 0, middle_base_z ]){
hull(){
translate([ 0, -cable_dia/2 ])
}
}
}
- minkowski(){
+ RegistrationsMinkowski()
CoverRegistrations();
- cube([ 1, fit_gap_y*2, fit_gap_z*2 ], center=true);
- }
+ RegistrationsMinkowski()
+ MidBotRegistrations();
BottomStrapCutouts(-cover_strap_c_d_y);
+ BottomStrapCutouts(midbot_strap_c_y);
}
}
CoverRegistrations();
}
CoverStrapCutouts();
+ linextr(-20,20) {
+ minkowski(){
+ square(strain_around * 2, center=true);
+ hull() MiddleStrainHoles();
+ }
+ }
}
}
module CoverPrint(){ ////toplevel
%Middle();
translate([0, 0, +0.25]) Cover();
}
+module ImpressionDemo(){ ////toplevel
+ color("black") translate([0, 0, -0.25]) Bottom();
+ %Middle();
+ %translate([0, 0, +0.25]) Cover();
+}
~ianmdlvl / reprap-play.git / blobdiff