4 include <commitid.scad>
24 interlock_fine = 0.66;
26 interlock_fine_slope = 1.0;
27 interlock_fine_lenslop = 1.0;
33 machine_rear_to_front = 85;
35 machine_rear_profile = [
51 machine_front_profile = [
66 cutout_l_end_y_front_slop = 0.5;
67 cutout_l_end_y_rear_slop = 0.5;
68 cutout_l_end_x_slop = 0.25;
71 cutout_l_end_y = machine_rear_to_front;
72 cutout_l_end_curve = 1;
73 cutout_l_end_y_total = cutout_l_end_y
74 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
76 tile02_tr = [-250, 0];
79 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
80 cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve;
81 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
83 // front and rear curves
87 rearcurve_strt_len = 52;
89 rearcurve_z_slop = 0.75;
91 rearcurve_avoid_y = 35;
93 rearcurve_double_inrad = 26.10 + 8.04;
99 frontcurve_side_skew = 3.5 / 72;
100 frontcurve_avoid_y = 70;
101 frontcurve_z_slop = 0.75;
107 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
109 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
111 hole_slop = (ply_hole_dia - post_dia)/2;
112 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
114 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
115 tile_hard_edge_hole_dist));
117 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
118 tile_hard_edge_hole_dist + round_edge_rad));
120 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
122 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
123 thehd_bl = -thehd_tr;
124 thehd_br = -thehd_tl;
126 tablet_z_slop = rearcurve_z_slop;
128 interlock_rad = interlock_dia/2;
129 interlock_negative_rad = interlock_rad + 0.125;
131 interlock_sq_adj = 0.2; // arbitrary
133 first_front = machine_front_profile[len(machine_front_profile)-1];
135 m4_define(`POST_TCROSSSZ',
136 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
141 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
142 translate([0,0, tile_th]) {
143 cylinder(r= screw_big_dia/2, h= screw_big_len);
144 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
148 translate([0,0, tile_th/2]) {
149 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
150 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
156 module Posts(posts) {
158 translate(concat(p, [0]))
163 module TileBase(botleft, topright){
164 size = topright - botleft;
165 botleft_post = botleft + thehd_tr;
166 topright_post = topright + thehd_bl;
169 translate(concat(botleft, [0]))
170 cube(concat(size, [tile_th]));
172 cidsz = topright_post-botleft_post
173 + [-post_dia,-post_dia]
175 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
176 echo("CID",cidsz,cidszr);
177 translate( concat(botleft_post, [ -tile_th ])
178 + 0.5 * [ post_dia, post_dia, 0 ]
179 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
180 Commitid_BestCount_M(cidszr);
183 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
184 cidsz = [ thehd[0], size[1] - 2*crossoff ];
185 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
188 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
189 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
190 translate(concat(botleft_post, [-1]))
191 cube(concat(topright_post-botleft_post, [tile_th+2]));
193 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
194 hull(){ // poor man's minkowski
195 for (xs=[-1,1]) for (ys=[-1,1]) for (zs=[-1,1]) {
196 translate([xs,ys,zs] * shufflesz)
205 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
206 m4_define(`INREFFRAME',`
207 length_vec = ($2) - ($1);
208 length = dist2d([0,0], length_vec);
209 length_uvec = length_vec / length;
210 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
211 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
212 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
219 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
220 m4_dnl INREFFRAME_EDGE { body; }
221 m4_define(`INREFFRAME_EDGE',`
222 translate([0,0, -round_edge_rad])
225 module RoundEdge(left_cnr, right_cnr) {
226 INREFFRAME(left_cnr, right_cnr)
230 cylinder(r= round_edge_rad, h= length, $fn=50);
231 translate([-1, 0, -20])
232 cube([length+2, 20, 20]);
237 module RoundCornerCut(ci) {
238 // ci should be [this_cnr, right_cnr]
239 // where right_cnr is to the right (ie, anticlockwise)
242 offr= round_cnr_rad - round_edge_rad;
243 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
245 cube(offr*2 - 0.1, center=true);
246 translate([offr, offr, 0])
247 cylinder(center=true, h=20, r= offr);
252 module RoundCornerAdd(ci) {
255 bigr = round_cnr_rad - round_edge_rad;
256 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
258 cube(bigr*2 + 0.1, center=true);
259 translate([bigr, bigr, 0])
260 rotate_extrude(convexity=10, $fn=50)
263 circle(r= round_edge_rad, $fn=50);
271 module InterlockLobePlan(negative) {
272 r = negative ? interlock_negative_rad : interlock_rad;
273 ymir = negative ? 0 : 1;
277 translate([thehd[0], 0]){
281 translate([-dx, -0.1])
282 square([ dx*2, r/2 + 0.1 ]);
284 translate([ xi*dx, r ])
292 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
293 for (lobei = [ 0 : nlobes-1 ]) {
294 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
295 translate([lobex, 0, 0]) {
296 InterlockLobePlan(negative);
302 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
303 mirror([0, negative])
304 translate([slotshorter, iadj])
305 square([length - slotshorter*2, interlock_fine + iadj*2]);
309 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
310 plusth = negative * 1.0;
311 protr = interlock_fine + interlock_sq_adj;
314 z1 = -tile_th/2 - protr / interlock_fine_slope;
315 z3 = -tile_th/2 + protr / interlock_fine_slope;
317 negsign = negative ? -1 : +1;
318 yprotr = negsign * protr;
320 INREFFRAME(left_cnr, right_cnr) {
321 for (vsect = [ // zs0 zs1 ys0, ys1
322 [ -tile_th-plusth, plusth, 0, 0],
323 [ z1, z2, 0, yprotr],
324 [ z2, z3, yprotr, 0],
334 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
338 linear_extrude(height=zsd, convexity=10)
339 InterlockEdgePlan(negative, nlobes, length, !!ysd);
344 function TestPiece_holes2corners(holes) =
345 [ holes[0] + thehd_bl,
348 holes[0] + thehd_tl ];
350 module TestPiece1(){ ////toplevel
354 corners = TestPiece_holes2corners(holes);
355 rcs = [corners[0], corners[1]];
358 TileBase(corners[0], corners[2]);
360 RoundEdge(corners[0], corners[1]);
361 RoundEdge(corners[3], corners[0]);
363 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
369 module TestPiece2(){ ////toplevel
373 corners = TestPiece_holes2corners(holes);
374 TileBase(corners[0], corners[2]);
376 RoundEdge(corners[0], corners[1]);
377 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
380 module TestDemo(){ ////toplevel
381 translate([ -thehd[0], 0 ])
384 translate([ +thehd[0] + demo_slop, 0 ])
388 module Machine_Arm(){
389 ysz = cutout_l_end_y_total;
390 // assume the round end is arc of a circle
391 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
392 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
394 translate([0,0,-30]) linear_extrude(height=60) {
395 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
397 translate([-50, -ysz/2])
399 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
400 circle(r=endrad, $fa=0.01,$fd=5);
406 module Machine_Profile(){
407 first_rear = machine_rear_profile[0];
408 below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
409 pol = concat( machine_rear_profile,
411 machine_front_profile);
412 skew_angle = atan2( first_front[1] - first_rear[1],
413 first_front[0] - first_rear[0] );
414 //echo(below_point, pol, skew_angle);
419 rotate([0,0, -skew_angle ]){
420 //translate( - first_front )
428 module Machine_NewRearProfile(){
429 // figures copied out of xfig edit boxes
430 // best not to edit the posbox size if poss - just move it
431 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
432 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
433 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
434 scaleline_mm = 12+5+10+5+3;
435 sh = -[abs(posbox[0]), abs(posbox[1])];
436 rot = atan2(-sideline[0], sideline[1]);
437 sc = scaleline_mm / scaleline;
438 //echo("SH",sh,rot,sc);
439 scale(sc) rotate(rot) translate(sh){
440 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
444 module Machine_NewRearCurve(){
445 slant = atan2(4,210-10);
447 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
448 translate([ rearcurve_double_inrad,
450 -rearcurve_double_inrad + 10 ]){
451 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
453 Machine_NewRearProfile();
454 translate([0,-100]) Machine_NewRearProfile();
458 rotate([0,90,0]) rotate([90,0,0]) {
460 rotate_extrude(convexity=10, $fn=64)
462 translate([ 0, -rearcurve_double_inrad ])
463 Machine_NewRearProfile();
464 translate([0,0,-500])
465 cube([500,500,1000]);
468 translate([1,0,-rearcurve_double_inrad])
469 rotate([0,-90,0]) rotate([0,0,-90])
470 linear_extrude(height= rearcurve_strt_len + 1)
471 Machine_NewRearProfile();
475 module Machine_RearProfile(){ ////toplevel
478 translate([ -200 + machine_rear_to_front/2, -100 ]) {
484 module Machine_FrontProfile(){
487 translate([ machine_rear_to_front/2, -100 ]) {
493 module Machine_Curves(){ ////toplevel
494 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
498 translate([ -reartablet_x,
500 -reartablet_z + tablet_z_slop])
502 cube([ reartablet_x+1,
506 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
508 frontcurve_z_slop ]){
509 translate([ 0, -first_front[0] , 0 ])
510 multmatrix([[1, -frontcurve_side_skew, 0, 0],
514 translate([ 0, first_front[0] , 0 ])
516 rotate([0,-90,0])rotate([0,0,-90]){
517 linear_extrude(height= 200)
518 Machine_FrontProfile();
521 translate([ rearcurve_strt_len,
524 Machine_NewRearCurve();
529 module Machine(){ ////toplevel
534 function Rectangle_corners(c0, sz) =
535 // returns the corners of a rectangle from c0 to c0+sz
536 // if sz is positive, the corners are anticlockwise starting with c0
539 c0 + [ sz[0], sz[1] ],
542 function Rectangle_corners2posts(c) =
548 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
550 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
553 m4_dnl c is from Rectangle_corners and
554 m4_dnl ix is a corner number
555 m4_dnl expands to two comma-separated corners:
556 m4_dnl that denoted by ix, and the next one anticlockwise
557 m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]')
559 module FitTest_general(c0,sz, dobrace=false){
560 c = Rectangle_corners(c0, sz);
564 Rectangle_TileBase(c);
566 translate(concat(c0, [-brace[2] + 0.1])){
568 cube(concat(sz,[brace[2]]) - [5,0,0]);
569 translate(brace + [0,0, -25])
570 cube(concat(sz, [50]) - brace*2 + [10,0,0]);
574 RoundEdge(R_EDGE(c,1));
580 module FitTest_Entire(){ ////toplevel
581 FitTest_general([-40,-80], [275,180], dobrace=true);
584 module FitTest_RearCurve(){ ////toplevel
585 FitTest_general([110,0], [170,100]);
588 module FitTest_FrontCurve(){ ////toplevel
589 FitTest_general([110,-80], [170,80]);
592 module Tile02(){ ////toplevel
594 c0 = tile02_tr + -sz;
595 c = Rectangle_corners(c0, sz);
596 posts = Rectangle_corners2posts(c);
600 Rectangle_TileBase(c);
602 RoundEdge(R_EDGE(c,0));
603 RoundEdge(R_EDGE(c,3));
604 InterlockEdge(R_EDGE(c,2), 0);
606 InterlockEdge(R_EDGE(c,1), 1);
612 module Tile12(){ ////toplevel
614 c0 = tile02_tr + [-sz[0], 0];
615 c = Rectangle_corners(c0, sz);
616 posts = Rectangle_corners2posts(c);
620 Rectangle_TileBase(c);
622 RoundEdge(R_EDGE(c,2));
623 RoundEdge(R_EDGE(c,3));
625 InterlockEdge(R_EDGE(c,0), 1);
626 InterlockEdge(R_EDGE(c,1), 1);
632 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
633 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
634 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
636 module Tile11(){ ////toplevel
638 c0 = tile01_tr + [-sz[0],0];
639 c = Rectangle_corners(c0, sz);
640 cnr_posts = Rectangle_corners2posts(c);
642 Posts_interpolate_one(cnr_posts[0],
643 cnr_posts[1] - [cutout_tile11_x, 0]),
644 [ cnr_posts[1] + [0, cutout_tile11_y],
650 Rectangle_TileBase(c);
652 RoundEdge(R_EDGE(c,2));
653 InterlockEdge(R_EDGE(c,3));
655 InterlockEdge(c[0], tile_01_11_cnr, 1);
656 InterlockEdge(tile_11_10_cnr, c[2], 1);
661 module Tile01(){ ////toplevel
663 c0 = tile01_tr + -sz;
664 c = Rectangle_corners(c0, sz);
665 cnr_posts = Rectangle_corners2posts(c);
667 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
668 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
669 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
674 Rectangle_TileBase(c);
676 RoundEdge(R_EDGE(c,0));
677 InterlockEdge(tile_01_11_cnr, c[3]);
678 InterlockEdge(R_EDGE(c,3));
680 InterlockEdge(c[1], tile_01_00_cnr, 1);
685 module Tile10(){ ////toplevel
687 c0 = tile01_tr + [0,0];
688 c = Rectangle_corners(c0, sz);
689 cnr_posts = Rectangle_corners2posts(c);
690 cty = cutout_tile11_y;
691 rcy = cty + rearcurve_avoid_y;
692 posts = [ cnr_posts[0] + [ 0, cty ],
693 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
694 cnr_posts[1] + [ 0, rcy ],
700 Rectangle_TileBase(c);
702 RoundEdge(R_EDGE(c,1));
703 RoundEdge(R_EDGE(c,2));
704 InterlockEdge(c[3], tile_11_10_cnr);
712 module Tile00(){ ////toplevel
714 c0 = tile01_tr + [0,-sz[1]];
715 c = Rectangle_corners(c0, sz);
716 cnr_posts = Rectangle_corners2posts(c);
717 cty = cutout_tile01_y;
718 rcy = cty + frontcurve_avoid_y;
719 posts = [ cnr_posts[0],
721 cnr_posts[2] + [ 0, -rcy ],
722 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
723 cnr_posts[3] + [ 0, -cty ]
728 Rectangle_TileBase(c);
730 RoundEdge(R_EDGE(c,0));
731 RoundEdge(R_EDGE(c,1));
732 InterlockEdge(tile_01_00_cnr, c[0]);
740 module Demo(){ ////toplevel
741 translate(demo_slop*[-2,1]) color("blue") Tile12();
742 translate(demo_slop*[-2,0]) color("red") Tile02();
743 translate(demo_slop*[-2,1]) color("orange") Tile11();
744 translate(demo_slop*[-2,0]) color("purple") Tile01();
745 translate(demo_slop*[-3,1]) color("blue") Tile10();
746 translate(demo_slop*[-3,0]) color("red") Tile00();
755 //Machine_NewRearProfile();
756 //Machine_NewRearCurve();