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 ],
85 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
87 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
89 hole_slop = (ply_hole_dia - post_dia)/2;
90 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
92 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
93 tile_hard_edge_hole_dist));
95 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
96 tile_hard_edge_hole_dist + round_edge_rad));
98 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
100 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
101 thehd_bl = -thehd_tr;
102 thehd_br = -thehd_tl;
104 tablet_z_slop = rearcurve_z_slop;
106 interlock_rad = interlock_dia/2;
107 interlock_negative_rad = interlock_rad + 0.125;
109 interlock_sq_adj = 0.2; // arbitrary
111 m4_define(`POST_TCROSSSZ',
112 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
117 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
118 translate([0,0, tile_th]) {
119 cylinder(r= screw_big_dia/2, h= screw_big_len);
120 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
124 translate([0,0, tile_th/2]) {
125 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
126 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
132 module Posts(posts) {
134 translate(concat(p, [0]))
139 module TileBase(botleft, topright){
140 size = topright - botleft;
141 botleft_post = botleft + thehd_tr;
142 topright_post = topright + thehd_bl;
145 translate(concat(botleft, [0]))
146 cube(concat(size, [tile_th]));
148 cidsz = topright_post-botleft_post
149 + [-post_dia,-post_dia]
151 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
152 echo("CID",cidsz,cidszr);
153 translate( concat(botleft_post, [ -tile_th ])
154 + 0.5 * [ post_dia, post_dia, 0 ]
155 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
156 Commitid_BestCount_M(cidszr);
159 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
160 cidsz = [ thehd[0], size[1] - 2*crossoff ];
161 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
162 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
163 Commitid_BestCount(cidszr);
166 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
167 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
168 translate(concat(botleft_post, [-1]))
169 cube(concat(topright_post-botleft_post, [tile_th+2]));
171 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
174 cube(shufflesz, center=true);
182 m4_dnl c is from Rectangle_corners and
183 m4_dnl ix is a corner number
184 m4_dnl expands to two comma-separated corners:
185 m4_dnl that denoted by ix, and the next one anticlockwise
186 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
189 m4_dnl c is from Rectangle_corners and
190 m4_dnl ix is a corner number
191 m4_dnl expands to an array of corners as for RoundCorner
192 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
194 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
195 m4_define(`INREFFRAME',`
196 length_vec = ($2) - ($1);
197 length = dist2d([0,0], length_vec);
198 length_uvec = length_vec / length;
199 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
200 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
201 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
208 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
209 m4_dnl INREFFRAME_EDGE { body; }
210 m4_define(`INREFFRAME_EDGE',`
211 translate([0,0, -round_edge_rad])
214 module RoundEdge(left_cnr, right_cnr) {
215 INREFFRAME(left_cnr, right_cnr)
219 cylinder(r= round_edge_rad, h= length, $fn=50);
220 translate([-1, 0, -20])
221 cube([length+2, 20, 20]);
226 m4_define(`ROUNDCORNER_VARS',`
230 bigr= round_cnr_rad - round_edge_rad;
231 l_uvec = unitvector2d(left_cnr - this_cnr);
232 r_uvec = unitvector2d(right_cnr - this_cnr);
233 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
234 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
235 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
236 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
237 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
238 ctr3 = concat(ctr,[0])
241 module RoundCorner_selector(ci, adj) {
245 INREFFRAME(ctr3,concat(lp1,[4])){
246 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
247 translate([-bigr*2 + adj, -bigr])
248 square([bigr*2, bigr*3]);
253 INREFFRAME(ctr3,concat(lp4,[0])){
254 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
255 translate([-bigr*2, -bigr*2])
256 square([bigr*2 + adj, bigr*3]);
263 module RoundCornerCut(ci) {
264 // ci should be [this_cnr, right_cnr, left_cnr]
265 // where right_cnr is to the right (ie, anticlockwise)
268 RoundCorner_selector(ci, -0.1);
270 cylinder(center=true, h=20, r= bigr);
274 module RoundCornerAdd(ci) {
277 RoundCorner_selector(ci, +0.1);
280 rotate_extrude(convexity=10, $fn=50)
283 circle(r= round_edge_rad, $fn=50);
292 module InterlockLobePlan(negative) {
293 r = negative ? interlock_negative_rad : interlock_rad;
294 ymir = negative ? 0 : 1;
298 translate([thehd[0], 0]){
302 translate([-dx, -0.1])
303 square([ dx*2, r/2 + 0.1 ]);
305 translate([ xi*dx, r ])
313 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
314 for (lobei = [ 0 : nlobes-1 ]) {
315 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
316 translate([lobex, 0, 0]) {
317 InterlockLobePlan(negative);
323 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
324 mirror([0, negative])
325 translate([slotshorter, iadj])
326 square([length - slotshorter*2, interlock_fine + iadj*2]);
330 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
331 plusth = negative * 1.0;
332 protr = interlock_fine + interlock_sq_adj;
335 z1 = -tile_th/2 - protr / interlock_fine_slope;
336 z3 = -tile_th/2 + protr / interlock_fine_slope;
338 negsign = negative ? -1 : +1;
339 yprotr = negsign * protr;
341 INREFFRAME(left_cnr, right_cnr) {
342 for (vsect = [ // zs0 zs1 ys0, ys1
343 [ -tile_th-plusth, plusth, 0, 0],
344 [ z1, z2, 0, yprotr],
345 [ z2, z3, yprotr, 0],
355 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
359 linear_extrude(height=zsd, convexity=10)
360 InterlockEdgePlan(negative, nlobes, length, !!ysd);
365 function TestPiece_holes2corners(holes) =
366 [ holes[0] + thehd_bl,
369 holes[0] + thehd_tl ];
371 module TestPiece1(){ ////toplevel
375 corners = TestPiece_holes2corners(holes);
376 rcs = R_CNR(corners,0);
379 TileBase(corners[0], corners[2]);
381 RoundEdge(corners[0], corners[1]);
382 RoundEdge(corners[3], corners[0]);
384 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
390 module TestPiece2(){ ////toplevel
394 corners = TestPiece_holes2corners(holes);
395 TileBase(corners[0], corners[2]);
397 RoundEdge(corners[0], corners[1]);
398 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
401 module TestDemo(){ ////toplevel
402 translate([ -thehd[0], 0 ])
405 translate([ +thehd[0] + demo_slop, 0 ])
409 module Machine_Arm(){
410 ysz = cutout_l_end_y_total;
411 // assume the round end is arc of a circle
412 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
413 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
415 translate([0,0,-30]) linear_extrude(height=60) {
416 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
418 translate([-50, -ysz/2])
420 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
421 circle(r=endrad, $fa=0.01,$fd=5);
427 module Machine_NewRearProfile(){
428 // figures copied out of xfig edit boxes
429 // best not to edit the posbox size if poss - just move it
430 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
431 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
432 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
433 scaleline_mm = 12+5+10+5+3;
434 sh = -[abs(posbox[0]), abs(posbox[1])];
435 rot = atan2(-sideline[0], sideline[1]);
436 sc = scaleline_mm / scaleline;
437 //echo("SH",sh,rot,sc);
438 scale(sc) rotate(rot) translate(sh){
439 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
443 module Machine_NewFrontProfile(){
444 // figures copied out of xfig edit boxes
445 // best not to edit the posbox size if poss - just move it
446 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
447 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
448 refline_mm = (11-1)*10;
449 sh = -[abs(posbox[0]), abs(posbox[1])];
450 rot = atan2(-refline[0], refline[1]);
451 sc = refline_mm / vectorlen2d(refline);
452 //echo("SH",sh,rot,sc);
453 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
454 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
458 module Machine_NewRearCurve(){
459 slant = atan2(4,210-10);
461 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
462 translate([ rearcurve_double_inrad,
464 -rearcurve_double_inrad + 10 ]){
465 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
467 Machine_NewRearProfile();
468 translate([0,-100]) Machine_NewRearProfile();
472 rotate([0,90,0]) rotate([90,0,0]) {
474 rotate_extrude(convexity=10, $fn=64)
476 translate([ 0, -rearcurve_double_inrad ])
477 Machine_NewRearProfile();
478 translate([0,0,-500])
479 cube([500,500,1000]);
482 translate([1,0,-rearcurve_double_inrad])
483 rotate([0,-90,0]) rotate([0,0,-90])
484 linear_extrude(height= rearcurve_strt_len + 1)
485 Machine_NewRearProfile();
489 module Machine_Curves(){ ////toplevel
490 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
494 translate([ -reartablet_x,
496 -reartablet_z + tablet_z_slop])
498 cube([ reartablet_x+1,
502 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
504 frontcurve_z_slop ]){
505 translate([0, -machine_rear_to_front, 0])
506 multmatrix([[1, -frontcurve_side_skew, 0, 0],
510 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
511 linear_extrude(height= 200)
512 Machine_NewFrontProfile();
514 translate([ rearcurve_strt_len,
517 Machine_NewRearCurve();
522 module TestStrapSlots(){
525 for (pos = teststrapslots_at) {
527 translate(concat(pos,[0]))
528 for (mx = [0,1]) mirror([mx,0,0]) {
529 translate([ pegwidth/2, -strap[1]/2, -20 ])
530 #cube(concat(strap,[40]));
535 module Machine(){ ////toplevel
542 module MachineEnvelope(){
544 p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y];
545 y_arm_t = cutout_tile11_y;
546 p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_y];
547 y_crv_b = y_arm_t + rearcurve_avoid_y;
549 translate([0,0,-50]) linear_extrude(height= 100){
550 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
551 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
555 function Rectangle_corners(c0, sz) =
556 // returns the corners of a rectangle from c0 to c0+sz
557 // if sz is positive, the corners are anticlockwise starting with c0
560 c0 + [ sz[0], sz[1] ],
563 function Rectangle_corners2posts(c) =
569 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
571 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
573 module Tile02(){ ////toplevel
575 c0 = tile02_tr + -sz;
576 c = Rectangle_corners(c0, sz);
577 posts = Rectangle_corners2posts(c);
581 Rectangle_TileBase(c);
583 RoundEdge(R_EDGE(c,0));
584 RoundEdge(R_EDGE(c,3));
585 InterlockEdge(R_EDGE(c,2), 0);
587 InterlockEdge(R_EDGE(c,1), 1);
593 module Tile12(){ ////toplevel
595 c0 = tile02_tr + [-sz[0], 0];
596 c = Rectangle_corners(c0, sz);
597 posts = Rectangle_corners2posts(c);
601 Rectangle_TileBase(c);
603 RoundEdge(R_EDGE(c,2));
604 RoundEdge(R_EDGE(c,3));
606 InterlockEdge(R_EDGE(c,0), 1);
607 InterlockEdge(R_EDGE(c,1), 1);
613 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
614 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
615 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
617 module Tile11(){ ////toplevel
619 c0 = tile01_tr + [-sz[0],0];
620 c = Rectangle_corners(c0, sz);
621 cnr_posts = Rectangle_corners2posts(c);
623 Posts_interpolate_one(cnr_posts[0],
624 cnr_posts[1] - [cutout_tile11_x, 0]),
625 [ cnr_posts[1] + [0, cutout_tile11_y],
631 Rectangle_TileBase(c);
633 RoundEdge(R_EDGE(c,2));
634 InterlockEdge(R_EDGE(c,3));
636 InterlockEdge(c[0], tile_01_11_cnr, 1);
637 InterlockEdge(tile_11_10_cnr, c[2], 1);
642 module Tile01(){ ////toplevel
644 c0 = tile01_tr + -sz;
645 c = Rectangle_corners(c0, sz);
646 cnr_posts = Rectangle_corners2posts(c);
648 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
649 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
650 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
655 Rectangle_TileBase(c);
657 RoundEdge(R_EDGE(c,0));
658 InterlockEdge(tile_01_11_cnr, c[3]);
659 InterlockEdge(R_EDGE(c,3));
661 InterlockEdge(c[1], tile_01_00_cnr, 1);
666 module Tile10(){ ////toplevel
668 c0 = tile01_tr + [0,0];
669 c = Rectangle_corners(c0, sz);
670 cnr_posts = Rectangle_corners2posts(c);
671 cty = cutout_tile11_y;
672 rcy = cty + rearcurve_avoid_y;
673 posts = [ cnr_posts[0] + [ 0, cty ],
674 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
675 cnr_posts[1] + [ 0, rcy ],
681 Rectangle_TileBase(c);
683 RoundEdge(R_EDGE(c,1));
684 RoundEdge(R_EDGE(c,2));
685 InterlockEdge(c[3], tile_11_10_cnr);
693 module Tile00(){ ////toplevel
695 c0 = tile01_tr + [0,-sz[1]];
696 c = Rectangle_corners(c0, sz);
698 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
699 c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ];
702 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
704 cnr_posts = Rectangle_corners2posts(c);
705 cty = cutout_tile01_y;
706 rcy = cty + frontcurve_avoid_y;
707 posts = [ cnr_posts[0],
709 cnr_posts[2] + [ 0, -rcy ],
710 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
711 cnr_posts[3] + [ 0, -cty ]
714 rc2 = [c1bis,c2bis,c[1]];
719 Rectangle_TileBase(c);
721 RoundEdge(R_EDGE(c,0));
722 RoundEdge(c[1], c1bis);
723 InterlockEdge(tile_01_00_cnr, c[0]);
726 translate([0,0,-20]) linear_extrude(height=40) {
727 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
730 RoundEdge(c1bis, c2bis);
739 module FitTest_general(c0,sz, dobrace=false, bracexx=0){
740 c = Rectangle_corners(c0, sz);
742 bsz = sz + [bracexx,0,0];
745 Rectangle_TileBase(c);
747 translate(concat(c0, [-brace[2] + 0.1])){
749 cube(concat(bsz, [brace[2]]) - [5,0,0]);
750 translate(brace + [0,0, -25])
751 cube(concat(bsz, [50]) - brace*2 + [10,0,0]);
755 RoundEdge(R_EDGE(c,1));
761 module FitTest_PairLink(cut=false){ ////toplevel
762 cy0=-55; cy1=85; cx=132;
765 footrad_min = 1; footrad_max = 4; footrad_depth = 5;
771 straphole_x_max = legrad/sqrt(2) + footrad_max;
772 dz = cut ? adj_neg_slop : 0;
774 translate([cx - bar[0]/2, cy0, dz + bar_z_slop])
775 cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]);
777 for (endy=[cy0,cy1]) {
779 translate([cx,endy,dz]){
781 for (rot=[45:90:315]) rotate(rot) {
782 translate([legrad,0,0]){
784 cylinder(r= footrad_max, h=1);
785 translate([0,0,-footrad_depth])
786 cylinder(r= footrad_min, h=1);
789 cylinder(r= footrad_min +
790 adj_neg_slop * (footrad_max-footrad_min)/footrad_depth,
795 for (rot=[45,135]) rotate(rot) {
798 translate([s*legrad,0,0])
799 cylinder(r= footrad_max, h=bar[1]);
805 for (rot=[0,180]) rotate(rot) {
806 translate([ straphole_x_max - strap[0]/2, 0,0 ])
807 cube(concat(strap,[20]), center=true);
814 module FitTest_RearCurve(){ ////toplevel
816 FitTest_general([100,0], [180,100]);
817 FitTest_PairLink(true);
822 module FitTest_FrontCurve(){ ////toplevel
828 translate([0,0,-8]) linear_extrude(height=18) {
829 translate(p0) square(sz);
832 FitTest_PairLink(true);
836 module FitTest_Entire(){ ////toplevel
839 szfront = [250,szrear[1]];
841 FitTest_general(p0, szrear, dobrace=true, bracexx=0);
842 FitTest_PairLink(true);
843 translate(concat(p0,[0]) + [szfront[0],-10,-40])
844 cube([100, -p0[1], 80]);
848 translate(concat(p0,[-20])) cube(concat(szrear,[40]));
850 FitTest_FrontCurve();
853 module FitTest_EntireDemo(){ ////toplevel
858 module FitTest_PairDemo(){ ////toplevel
862 %FitTest_FrontCurve();
863 %FitTest_RearCurve();
869 FitTest_FrontCurve();
872 #FitTest_PairLink(true);
878 module RoundCornerDemo_plat(cnr){
879 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
882 module RoundCornerDemo(){ ////toplevel
883 cnr = [ [-2,-3], [13,-3], [-12,9] ];
884 translate([0,25,0]) RoundCornerDemo_plat(cnr);
885 translate([25,0,0]) RoundCornerAdd(cnr);
886 translate([-25,0,0]) RoundCornerCut(cnr);
887 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
889 RoundCornerDemo_plat(cnr);
895 module Demo(){ ////toplevel
896 translate(demo_slop*[-2,1]) color("blue") Tile12();
897 translate(demo_slop*[-2,0]) color("red") Tile02();
898 translate(demo_slop*[-2,1]) color("orange") Tile11();
899 translate(demo_slop*[-2,0]) color("purple") Tile01();
900 translate(demo_slop*[-3,1]) color("blue") Tile10();
901 translate(demo_slop*[-3,0]) color("red") Tile00();
909 //Machine_NewRearProfile();
910 //Machine_NewRearCurve();
911 //Machine_NewFrontProfile();