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 = 84 + 0.25 - 1.4;
35 cutout_l_end_y_front_slop = 0.5;
36 cutout_l_end_y_rear_slop = 0.5;
37 cutout_l_end_x_slop = 0.25;
40 cutout_l_end_y = machine_rear_to_front;
41 cutout_l_end_curve = 1;
42 cutout_l_end_y_total = cutout_l_end_y
43 + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
45 tile02_tr = [-250, 0];
48 cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
49 cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve;
50 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
52 // front and rear curves
56 rearcurve_strt_len = 52;
58 rearcurve_z_slop = -0.50;
60 rearcurve_avoid_y = 35;
62 rearcurve_double_inrad = 26.10 + 8.04;
68 frontcurve_side_skew = 3.5 / 72;
69 frontcurve_avoid_y = 70;
70 frontcurve_z_slop = 0.75;
72 frontcurve_strt_len = 50;
73 frontcurve_dualcurve_angle = 30;
75 teststrapslots_at = [ [ 110, 70 ],
81 teststrap_peg = [7.5, 3.5];
87 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
89 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
91 hole_slop = (ply_hole_dia - post_dia)/2;
92 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
94 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
95 tile_hard_edge_hole_dist));
97 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
98 tile_hard_edge_hole_dist + round_edge_rad));
100 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
102 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
103 thehd_bl = -thehd_tr;
104 thehd_br = -thehd_tl;
106 tablet_z_slop = rearcurve_z_slop;
108 interlock_rad = interlock_dia/2;
109 interlock_negative_rad = interlock_rad + 0.125;
111 interlock_sq_adj = 0.2; // arbitrary
113 m4_define(`POST_TCROSSSZ',
114 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
119 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
120 translate([0,0, tile_th]) {
121 cylinder(r= screw_big_dia/2, h= screw_big_len);
122 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
126 translate([0,0, tile_th/2]) {
127 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
128 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
134 module Posts(posts) {
136 translate(concat(p, [0]))
141 module TileBase(botleft, topright){
142 size = topright - botleft;
143 botleft_post = botleft + thehd_tr;
144 topright_post = topright + thehd_bl;
147 translate(concat(botleft, [0]))
148 cube(concat(size, [tile_th]));
150 cidsz = topright_post-botleft_post
151 + [-post_dia,-post_dia]
153 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
154 echo("CID",cidsz,cidszr);
155 translate( concat(botleft_post, [ -tile_th ])
156 + 0.5 * [ post_dia, post_dia, 0 ]
157 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
158 Commitid_BestCount_M(cidszr);
161 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
162 cidsz = [ thehd[0], size[1] - 2*crossoff ];
163 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
164 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
165 Commitid_BestCount(cidszr);
168 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
169 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
170 translate(concat(botleft_post, [-1]))
171 cube(concat(topright_post-botleft_post, [tile_th+2]));
173 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
176 cube(shufflesz, center=true);
184 m4_dnl c is from Rectangle_corners and
185 m4_dnl ix is a corner number
186 m4_dnl expands to two comma-separated corners:
187 m4_dnl that denoted by ix, and the next one anticlockwise
188 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
191 m4_dnl c is from Rectangle_corners and
192 m4_dnl ix is a corner number
193 m4_dnl expands to an array of corners as for RoundCorner
194 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
196 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
197 m4_define(`INREFFRAME',`
198 length_vec = ($2) - ($1);
199 length = dist2d([0,0], length_vec);
200 length_uvec = length_vec / length;
201 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
202 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
203 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
210 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
211 m4_dnl INREFFRAME_EDGE { body; }
212 m4_define(`INREFFRAME_EDGE',`
213 translate([0,0, -round_edge_rad])
216 module RoundEdge(left_cnr, right_cnr) {
217 INREFFRAME(left_cnr, right_cnr)
221 cylinder(r= round_edge_rad, h= length, $fn=50);
222 translate([-1, 0, -20])
223 cube([length+2, 20, 20]);
228 m4_define(`ROUNDCORNER_VARS',`
232 bigr= round_cnr_rad - round_edge_rad;
233 l_uvec = unitvector2d(left_cnr - this_cnr);
234 r_uvec = unitvector2d(right_cnr - this_cnr);
235 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
236 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
237 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
238 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
239 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
240 ctr3 = concat(ctr,[0])
243 module RoundCorner_selector(ci, adj) {
247 INREFFRAME(ctr3,concat(lp1,[4])){
248 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
249 translate([-bigr*2 + adj, -bigr])
250 square([bigr*2, bigr*3]);
255 INREFFRAME(ctr3,concat(lp4,[0])){
256 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
257 translate([-bigr*2, -bigr*2])
258 square([bigr*2 + adj, bigr*3]);
265 module RoundCornerCut(ci) {
266 // ci should be [this_cnr, right_cnr, left_cnr]
267 // where right_cnr is to the right (ie, anticlockwise)
270 RoundCorner_selector(ci, -0.1);
272 cylinder(center=true, h=20, r= bigr);
276 module RoundCornerAdd(ci) {
279 RoundCorner_selector(ci, +0.1);
282 rotate_extrude(convexity=10, $fn=50)
285 circle(r= round_edge_rad, $fn=50);
294 module InterlockLobePlan(negative) {
295 r = negative ? interlock_negative_rad : interlock_rad;
296 ymir = negative ? 0 : 1;
300 translate([thehd[0], 0]){
304 translate([-dx, -0.1])
305 square([ dx*2, r/2 + 0.1 ]);
307 translate([ xi*dx, r ])
315 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
316 for (lobei = [ 0 : nlobes-1 ]) {
317 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
318 translate([lobex, 0, 0]) {
319 InterlockLobePlan(negative);
325 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
326 mirror([0, negative])
327 translate([slotshorter, iadj])
328 square([length - slotshorter*2, interlock_fine + iadj*2]);
332 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
333 plusth = negative * 1.0;
334 protr = interlock_fine + interlock_sq_adj;
337 z1 = -tile_th/2 - protr / interlock_fine_slope;
338 z3 = -tile_th/2 + protr / interlock_fine_slope;
340 negsign = negative ? -1 : +1;
341 yprotr = negsign * protr;
343 INREFFRAME(left_cnr, right_cnr) {
344 for (vsect = [ // zs0 zs1 ys0, ys1
345 [ -tile_th-plusth, plusth, 0, 0],
346 [ z1, z2, 0, yprotr],
347 [ z2, z3, yprotr, 0],
357 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
361 linear_extrude(height=zsd, convexity=10)
362 InterlockEdgePlan(negative, nlobes, length, !!ysd);
367 function TestPiece_holes2corners(holes) =
368 [ holes[0] + thehd_bl,
371 holes[0] + thehd_tl ];
373 module TestPiece1(){ ////toplevel
377 corners = TestPiece_holes2corners(holes);
378 rcs = R_CNR(corners,0);
381 TileBase(corners[0], corners[2]);
383 RoundEdge(corners[0], corners[1]);
384 RoundEdge(corners[3], corners[0]);
386 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
392 module TestPiece2(){ ////toplevel
396 corners = TestPiece_holes2corners(holes);
397 TileBase(corners[0], corners[2]);
399 RoundEdge(corners[0], corners[1]);
400 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
403 module TestDemo(){ ////toplevel
404 translate([ -thehd[0], 0 ])
407 translate([ +thehd[0] + demo_slop, 0 ])
411 module Machine_Arm(){
412 ysz = cutout_l_end_y_total;
413 // assume the round end is arc of a circle
414 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
415 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
417 translate([0,0,-30]) linear_extrude(height=60) {
418 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
420 translate([-50, -ysz/2])
422 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
423 circle(r=endrad, $fa=0.01,$fd=5);
429 module Machine_NewRearProfile(){
430 // figures copied out of xfig edit boxes
431 // best not to edit the posbox size if poss - just move it
432 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
433 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
434 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
435 scaleline_mm = 12+5+10+5+3;
436 sh = -[abs(posbox[0]), abs(posbox[1])];
437 rot = atan2(-sideline[0], sideline[1]);
438 sc = scaleline_mm / scaleline;
439 //echo("SH",sh,rot,sc);
440 scale(sc) rotate(rot) translate(sh){
441 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
445 module Machine_NewFrontProfile(){
446 // figures copied out of xfig edit boxes
447 // best not to edit the posbox size if poss - just move it
448 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
449 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
450 refline_mm = (11-1)*10;
451 sh = -[abs(posbox[0]), abs(posbox[1])];
452 rot = atan2(-refline[0], refline[1]);
453 sc = refline_mm / vectorlen2d(refline);
454 //echo("SH",sh,rot,sc);
455 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
456 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
460 module Machine_NewRearCurve(){
461 slant = atan2(4,210-10);
463 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
464 translate([ rearcurve_double_inrad,
466 -rearcurve_double_inrad + 10 ]){
467 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
469 Machine_NewRearProfile();
470 translate([0,-100]) Machine_NewRearProfile();
474 rotate([0,90,0]) rotate([90,0,0]) {
476 rotate_extrude(convexity=10, $fn=64)
478 translate([ 0, -rearcurve_double_inrad ])
479 Machine_NewRearProfile();
480 translate([0,0,-500])
481 cube([500,500,1000]);
484 translate([1,0,-rearcurve_double_inrad])
485 rotate([0,-90,0]) rotate([0,0,-90])
486 linear_extrude(height= rearcurve_strt_len + 1)
487 Machine_NewRearProfile();
491 module Machine_Curves(){ ////toplevel
492 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
496 translate([ -reartablet_x,
498 -reartablet_z + tablet_z_slop])
500 cube([ reartablet_x+1,
504 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
506 frontcurve_z_slop ]){
507 translate([0, -machine_rear_to_front, 0])
508 multmatrix([[1, -frontcurve_side_skew, 0, 0],
512 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
513 linear_extrude(height= 200)
514 Machine_NewFrontProfile();
516 translate([ rearcurve_strt_len,
519 Machine_NewRearCurve();
524 module TestStrapSlots(){
525 pegwidth = teststrap_peg[0];
527 for (pos = teststrapslots_at) {
529 translate(concat(pos,[0]))
530 for (mx = [0,1]) mirror([mx,0,0]) {
531 translate([ pegwidth/2, -strap[1]/2, -20 ])
532 #cube(concat(strap,[40]));
537 module Machine(){ ////toplevel
544 module MachineEnvelope(){
546 p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y];
547 y_arm_t = cutout_tile11_y;
548 p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_y];
549 y_crv_b = y_arm_t + rearcurve_avoid_y;
551 translate([0,0,-50]) linear_extrude(height= 100){
552 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
553 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
557 function Rectangle_corners(c0, sz) =
558 // returns the corners of a rectangle from c0 to c0+sz
559 // if sz is positive, the corners are anticlockwise starting with c0
562 c0 + [ sz[0], sz[1] ],
565 function Rectangle_corners2posts(c) =
571 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
573 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
575 module Tile02(){ ////toplevel
577 c0 = tile02_tr + -sz;
578 c = Rectangle_corners(c0, sz);
579 posts = Rectangle_corners2posts(c);
583 Rectangle_TileBase(c);
585 RoundEdge(R_EDGE(c,0));
586 RoundEdge(R_EDGE(c,3));
587 InterlockEdge(R_EDGE(c,2), 0);
589 InterlockEdge(R_EDGE(c,1), 1);
595 module Tile12(){ ////toplevel
597 c0 = tile02_tr + [-sz[0], 0];
598 c = Rectangle_corners(c0, sz);
599 posts = Rectangle_corners2posts(c);
603 Rectangle_TileBase(c);
605 RoundEdge(R_EDGE(c,2));
606 RoundEdge(R_EDGE(c,3));
608 InterlockEdge(R_EDGE(c,0), 1);
609 InterlockEdge(R_EDGE(c,1), 1);
615 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
616 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
617 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
619 module Tile11(){ ////toplevel
621 c0 = tile01_tr + [-sz[0],0];
622 c = Rectangle_corners(c0, sz);
623 cnr_posts = Rectangle_corners2posts(c);
625 Posts_interpolate_one(cnr_posts[0],
626 cnr_posts[1] - [cutout_tile11_x, 0]),
627 [ cnr_posts[1] + [0, cutout_tile11_y],
633 Rectangle_TileBase(c);
635 RoundEdge(R_EDGE(c,2));
636 InterlockEdge(R_EDGE(c,3));
638 InterlockEdge(c[0], tile_01_11_cnr, 1);
639 InterlockEdge(tile_11_10_cnr, c[2], 1);
644 module Tile01(){ ////toplevel
646 c0 = tile01_tr + -sz;
647 c = Rectangle_corners(c0, sz);
648 cnr_posts = Rectangle_corners2posts(c);
650 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
651 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
652 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
657 Rectangle_TileBase(c);
659 RoundEdge(R_EDGE(c,0));
660 InterlockEdge(tile_01_11_cnr, c[3]);
661 InterlockEdge(R_EDGE(c,3));
663 InterlockEdge(c[1], tile_01_00_cnr, 1);
668 module Tile10(){ ////toplevel
670 c0 = tile01_tr + [0,0];
671 c = Rectangle_corners(c0, sz);
672 cnr_posts = Rectangle_corners2posts(c);
673 cty = cutout_tile11_y;
674 rcy = cty + rearcurve_avoid_y;
675 posts = [ cnr_posts[0] + [ 0, cty ],
676 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
677 cnr_posts[1] + [ 0, rcy ],
683 Rectangle_TileBase(c);
685 RoundEdge(R_EDGE(c,1));
686 RoundEdge(R_EDGE(c,2));
687 InterlockEdge(c[3], tile_11_10_cnr);
695 module Tile00(){ ////toplevel
697 c0 = tile01_tr + [0,-sz[1]];
698 c = Rectangle_corners(c0, sz);
700 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
701 c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ];
704 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
706 cnr_posts = Rectangle_corners2posts(c);
707 cty = cutout_tile01_y;
708 rcy = cty + frontcurve_avoid_y;
709 posts = [ cnr_posts[0],
711 cnr_posts[2] + [ 0, -rcy ],
712 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
713 cnr_posts[3] + [ 0, -cty ]
716 rc2 = [c1bis,c2bis,c[1]];
721 Rectangle_TileBase(c);
723 RoundEdge(R_EDGE(c,0));
724 RoundEdge(c[1], c1bis);
725 InterlockEdge(tile_01_00_cnr, c[0]);
728 translate([0,0,-20]) linear_extrude(height=40) {
729 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
732 RoundEdge(c1bis, c2bis);
741 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
742 c = Rectangle_corners(c0, sz);
744 bsz = sz + [bracexx,0,0];
747 Rectangle_TileBase(c);
749 translate(concat(c0, [-brace[2] + 0.1])){
751 cube(concat(bsz, [brace[2]]) - [5,0,0]);
752 translate(brace + [0,0, -25])
753 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
757 RoundEdge(R_EDGE(c,1));
763 module FitTest_PairLink(cut=false){ ////toplevel
764 cy0=-55; cy1=85; cx=132;
767 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
773 straphole_x_max = legrad/sqrt(2) + footrad_max;
774 dz = cut ? adj_neg_slop : 0;
776 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
777 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
779 for (endy=[cy0,cy1]) {
781 translate([cx,endy,dz]){
783 for (rot=[45:90:315]) rotate(rot) {
784 translate([legrad,0,0]){
786 cylinder(r= footrad_max, h=1);
787 translate([0,0,-footrad_depth])
788 cylinder(r= footrad_min, h=1);
791 cylinder(r= footrad_min +
792 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
797 for (rot=[45,135]) rotate(rot) {
800 translate([s*legrad,0,0])
801 cylinder(r= footrad_max, h=bar[1]);
807 for (rot=[0,180]) rotate(rot) {
808 translate([ straphole_x_max - strap[0]/2, 0,0 ])
809 cube(concat(strap,[20]), center=true);
816 module FitTest_RearCurve(){ ////toplevel
818 FitTest_general([100,0], [180,100]);
819 FitTest_PairLink(true);
824 module FitTest_FrontCurve(){ ////toplevel
830 translate([0,0,-8]) linear_extrude(height=18) {
831 translate(p0) square(sz);
834 FitTest_PairLink(true);
838 module FitTest_Entire(){ ////toplevel
841 szfront = [250,szrear[1]];
843 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
844 FitTest_PairLink(true);
845 translate(concat(p0,[0]) + [szfront[0],-10,-40])
846 cube([100, -p0[1], 80]);
850 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
852 FitTest_FrontCurve();
855 module FitTest_EntireDemo(){ ////toplevel
860 module FitTest_PairDemo(){ ////toplevel
864 %FitTest_FrontCurve();
865 %FitTest_RearCurve();
871 FitTest_FrontCurve();
874 #FitTest_PairLink(true);
880 module RoundCornerDemo_plat(cnr){
881 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
884 module RoundCornerDemo(){ ////toplevel
885 cnr = [ [-2,-3], [13,-3], [-12,9] ];
886 translate([0,25,0]) RoundCornerDemo_plat(cnr);
887 translate([25,0,0]) RoundCornerAdd(cnr);
888 translate([-25,0,0]) RoundCornerCut(cnr);
889 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
891 RoundCornerDemo_plat(cnr);
897 module Demo(){ ////toplevel
898 translate(demo_slop*[-2,1]) color("blue") Tile12();
899 translate(demo_slop*[-2,0]) color("red") Tile02();
900 translate(demo_slop*[-2,1]) color("orange") Tile11();
901 translate(demo_slop*[-2,0]) color("purple") Tile01();
902 translate(demo_slop*[-3,1]) color("blue") Tile10();
903 translate(demo_slop*[-3,0]) color("red") Tile00();
911 //Machine_NewRearProfile();
912 //Machine_NewRearCurve();
913 //Machine_NewFrontProfile();