157 lines
3.8 KiB
OpenSCAD
157 lines
3.8 KiB
OpenSCAD
// asdfadsf
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//radius = product_of_the_triangle_side_lengths / area_of_the_triangle_multiplied_by_4;
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FN=80*1;
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width_shortest = 46.5;
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width_longest = 55.0;
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height = 40;
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wall_thickness = 3;
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max_length = 30;
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socket_diameter = 40;
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socket_distance_from_edge = 5 + (width_longest-width_shortest)/2;
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wire_diameter = 8;
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wire_cover_diameter = 20;
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switch_width = 20 + 100; // enough not to leave material hanging
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switch_length = 30;
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switch_distance_from_edge = 5 + (width_longest-width_shortest)/2;
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wireend = 0; // 0 or 1
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withswitch = 0; // 0 or 1
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// Gotta do some mathematics
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triangle_height = (width_longest - width_shortest) / 2;
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triangle_width = height / 2;
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slanted_side = sqrt(pow(triangle_height, 2) + pow(triangle_width,2));
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product_triangle_sides = slanted_side * slanted_side * height;
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triangle_area = (height*triangle_height)/2;
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radius_side = product_triangle_sides / (4 * triangle_area);
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echo(str("Radius: ", radius_side));
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module body(radius_sides, body_height, body_width, inner){
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intersection(){
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intersection(){
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intersection(){
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translate([0,0,-body_height/2]){
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cube([body_width,100,body_height]);
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}
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translate([radius_sides,0,0]){
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rotate([-90,0,0]){
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cylinder(h=100, r=radius_sides, $fn=FN);
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}
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}
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}
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translate([body_width-radius_sides,0,0]){
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rotate([-90,0,0]){
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cylinder(h=100, r=radius_sides, $fn=FN);
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}
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}
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}
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union(){
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translate([0,radius_sides,-body_height/2]){
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cube([body_width,100,body_height]);
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}
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if (inner == 1) {
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translate([0,radius_sides,0]){
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rotate([0,90,0]){
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cylinder(h=100, r=radius_sides, $fn=FN);
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}
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}
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} else {
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translate([0,0,-body_height/2]){
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cube([body_width,100,body_height]);
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}
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}
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}
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}
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}
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module shell(){
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intersection(){
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difference(){
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body(radius_side + wall_thickness*2, height + wall_thickness*2, width_longest + wall_thickness*2);
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translate([wall_thickness, wall_thickness, 0]){
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body(radius_side, height, width_longest, 1);
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}
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if (withswitch == 0) {
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// substract socket
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translate([(width_longest + wall_thickness*2)/2, socket_distance_from_edge+socket_diameter/2, (height + wall_thickness*2)/2 - wall_thickness*2]){
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cylinder(h=wall_thickness*3, r=socket_diameter/2, $fn=FN);
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}
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} else {
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translate([(width_longest + wall_thickness*2)/2 - switch_length/2, switch_distance_from_edge, (height + wall_thickness*2)/2 - wall_thickness*2]){
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cube([switch_length, switch_width, wall_thickness*3]);
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}
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}
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if (wireend == 1) {
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// substract wire cover bit
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translate([(width_longest + wall_thickness*2)/2, - wall_thickness, 0]){
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rotate([270, 0, 0]){
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cylinder(h=wall_thickness*3, r=wire_cover_diameter/2, $fn=FN);
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}
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}
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// and substract space for the wire to be able to fit the cover
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translate([(width_longest + wall_thickness*2)/2 - wire_diameter/2, -1, -(height+wall_thickness*2)/2-1]){
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cube([wire_diameter, max_length+10, (height + wall_thickness*2)/2 + 1]);
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}
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}
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}
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translate([0,0,-(height+wall_thickness*2)/2]){
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cube([width_longest+ wall_thickness*2,max_length,height+wall_thickness*2]);
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}
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}
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}
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module screwdown(){
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difference(){
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cube([15+(width_longest-width_shortest)/2+wall_thickness,15,wall_thickness]);
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translate([7.5,7.5,0]){
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screw_hole();
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}
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}
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}
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module screw_hole() {
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// screw head that I measured maxes at 7mm
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// screw thread is 3.5 mm
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head = 7;
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thread = 3.5 + 0.5;
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translate([0,0,-20]){
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cylinder(h=30, r=thread/2, $fn=FN);
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}
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translate([0,0,wall_thickness-(thread/2)]){
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cylinder(h=head-(thread/2), r1=thread/2, r2=head);
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}
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}
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module assembly(){
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shell();
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translate([-15,0,- height/2 -wall_thickness]){
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screwdown();
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}
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translate([width_longest+wall_thickness*2+15,0,- height/2 -wall_thickness]){
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mirror([1,0,0]){
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screwdown();
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}
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}
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}
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rotate([90,0,0]){
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translate([0,0,height/2+wall_thickness]){
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assembly();
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}
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}
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