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;
103 frontcurve_strt_len = 60;
104 frontcurve_dualcurve_angle = 90 - 65;
110 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
112 echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist));
114 hole_slop = (ply_hole_dia - post_dia)/2;
115 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
117 echo(str("HOLES IN PLY ctr dist from TILE HARD edge = ",
118 tile_hard_edge_hole_dist));
120 echo(str("HOLES IN PLY ctr dist from TILE ROUND edge = ",
121 tile_hard_edge_hole_dist + round_edge_rad));
123 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
125 thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
126 thehd_bl = -thehd_tr;
127 thehd_br = -thehd_tl;
129 tablet_z_slop = rearcurve_z_slop;
131 interlock_rad = interlock_dia/2;
132 interlock_negative_rad = interlock_rad + 0.125;
134 interlock_sq_adj = 0.2; // arbitrary
136 first_front = machine_front_profile[len(machine_front_profile)-1];
138 m4_define(`POST_TCROSSSZ',
139 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
144 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
145 translate([0,0, tile_th]) {
146 cylinder(r= screw_big_dia/2, h= screw_big_len);
147 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
151 translate([0,0, tile_th/2]) {
152 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
153 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
159 module Posts(posts) {
161 translate(concat(p, [0]))
166 module TileBase(botleft, topright){
167 size = topright - botleft;
168 botleft_post = botleft + thehd_tr;
169 topright_post = topright + thehd_bl;
172 translate(concat(botleft, [0]))
173 cube(concat(size, [tile_th]));
175 cidsz = topright_post-botleft_post
176 + [-post_dia,-post_dia]
178 cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
179 echo("CID",cidsz,cidszr);
180 translate( concat(botleft_post, [ -tile_th ])
181 + 0.5 * [ post_dia, post_dia, 0 ]
182 + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
183 Commitid_BestCount_M(cidszr);
186 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
187 cidsz = [ thehd[0], size[1] - 2*crossoff ];
188 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
189 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
190 Commitid_BestCount(cidszr);
193 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
194 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
195 translate(concat(botleft_post, [-1]))
196 cube(concat(topright_post-botleft_post, [tile_th+2]));
198 shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
201 cube(shufflesz, center=true);
209 m4_dnl c is from Rectangle_corners and
210 m4_dnl ix is a corner number
211 m4_dnl expands to two comma-separated corners:
212 m4_dnl that denoted by ix, and the next one anticlockwise
213 m4_define(`R_EDGE',`$1[$2], $1[(($2)+1)%4]')
216 m4_dnl c is from Rectangle_corners and
217 m4_dnl ix is a corner number
218 m4_dnl expands to an array of corners as for RoundCorner
219 m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]')
221 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
222 m4_define(`INREFFRAME',`
223 length_vec = ($2) - ($1);
224 length = dist2d([0,0], length_vec);
225 length_uvec = length_vec / length;
226 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
227 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
228 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
235 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
236 m4_dnl INREFFRAME_EDGE { body; }
237 m4_define(`INREFFRAME_EDGE',`
238 translate([0,0, -round_edge_rad])
241 module RoundEdge(left_cnr, right_cnr) {
242 INREFFRAME(left_cnr, right_cnr)
246 cylinder(r= round_edge_rad, h= length, $fn=50);
247 translate([-1, 0, -20])
248 cube([length+2, 20, 20]);
253 m4_define(`ROUNDCORNER_VARS',`
257 bigr= round_cnr_rad - round_edge_rad;
258 l_uvec = unitvector2d(left_cnr - this_cnr);
259 r_uvec = unitvector2d(right_cnr - this_cnr);
260 lp1 = left_cnr + clockwise2d(l_uvec) * bigr;
261 lp2 = this_cnr + clockwise2d(l_uvec) * bigr;
262 lp3 = this_cnr - clockwise2d(r_uvec) * bigr;
263 lp4 = right_cnr - clockwise2d(r_uvec) * bigr;
264 ctr = line_intersection_2d(lp1,lp2,lp3,lp4);
265 ctr3 = concat(ctr,[0])
268 module RoundCorner_selector(ci, adj) {
272 INREFFRAME(ctr3,concat(lp1,[4])){
273 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
274 translate([-bigr*2 + adj, -bigr])
275 square([bigr*2, bigr*3]);
280 INREFFRAME(ctr3,concat(lp4,[0])){
281 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
282 translate([-bigr*2, -bigr*2])
283 square([bigr*2 + adj, bigr*3]);
290 module RoundCornerCut(ci) {
291 // ci should be [this_cnr, right_cnr, left_cnr]
292 // where right_cnr is to the right (ie, anticlockwise)
295 RoundCorner_selector(ci, -0.1);
297 cylinder(center=true, h=20, r= bigr);
301 module RoundCornerAdd(ci) {
304 RoundCorner_selector(ci, +0.1);
307 rotate_extrude(convexity=10, $fn=50)
310 circle(r= round_edge_rad, $fn=50);
319 module InterlockLobePlan(negative) {
320 r = negative ? interlock_negative_rad : interlock_rad;
321 ymir = negative ? 0 : 1;
325 translate([thehd[0], 0]){
329 translate([-dx, -0.1])
330 square([ dx*2, r/2 + 0.1 ]);
332 translate([ xi*dx, r ])
340 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
341 for (lobei = [ 0 : nlobes-1 ]) {
342 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
343 translate([lobex, 0, 0]) {
344 InterlockLobePlan(negative);
350 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
351 mirror([0, negative])
352 translate([slotshorter, iadj])
353 square([length - slotshorter*2, interlock_fine + iadj*2]);
357 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
358 plusth = negative * 1.0;
359 protr = interlock_fine + interlock_sq_adj;
362 z1 = -tile_th/2 - protr / interlock_fine_slope;
363 z3 = -tile_th/2 + protr / interlock_fine_slope;
365 negsign = negative ? -1 : +1;
366 yprotr = negsign * protr;
368 INREFFRAME(left_cnr, right_cnr) {
369 for (vsect = [ // zs0 zs1 ys0, ys1
370 [ -tile_th-plusth, plusth, 0, 0],
371 [ z1, z2, 0, yprotr],
372 [ z2, z3, yprotr, 0],
382 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
386 linear_extrude(height=zsd, convexity=10)
387 InterlockEdgePlan(negative, nlobes, length, !!ysd);
392 function TestPiece_holes2corners(holes) =
393 [ holes[0] + thehd_bl,
396 holes[0] + thehd_tl ];
398 module TestPiece1(){ ////toplevel
402 corners = TestPiece_holes2corners(holes);
403 rcs = R_CNR(corners,0);
406 TileBase(corners[0], corners[2]);
408 RoundEdge(corners[0], corners[1]);
409 RoundEdge(corners[3], corners[0]);
411 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
417 module TestPiece2(){ ////toplevel
421 corners = TestPiece_holes2corners(holes);
422 TileBase(corners[0], corners[2]);
424 RoundEdge(corners[0], corners[1]);
425 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
428 module TestDemo(){ ////toplevel
429 translate([ -thehd[0], 0 ])
432 translate([ +thehd[0] + demo_slop, 0 ])
436 module Machine_Arm(){
437 ysz = cutout_l_end_y_total;
438 // assume the round end is arc of a circle
439 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
440 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
442 translate([0,0,-30]) linear_extrude(height=60) {
443 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
445 translate([-50, -ysz/2])
447 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
448 circle(r=endrad, $fa=0.01,$fd=5);
454 module Machine_Profile(){
455 first_rear = machine_rear_profile[0];
456 below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
457 pol = concat( machine_rear_profile,
459 machine_front_profile);
460 skew_angle = atan2( first_front[1] - first_rear[1],
461 first_front[0] - first_rear[0] );
462 //echo(below_point, pol, skew_angle);
467 rotate([0,0, -skew_angle ]){
468 //translate( - first_front )
476 module Machine_NewRearProfile(){
477 // figures copied out of xfig edit boxes
478 // best not to edit the posbox size if poss - just move it
479 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
480 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
481 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
482 scaleline_mm = 12+5+10+5+3;
483 sh = -[abs(posbox[0]), abs(posbox[1])];
484 rot = atan2(-sideline[0], sideline[1]);
485 sc = scaleline_mm / scaleline;
486 //echo("SH",sh,rot,sc);
487 scale(sc) rotate(rot) translate(sh){
488 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
492 module Machine_NewFrontProfile(){
493 // figures copied out of xfig edit boxes
494 // best not to edit the posbox size if poss - just move it
495 posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green
496 refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue
497 refline_mm = (11-1)*10;
498 sh = -[abs(posbox[0]), abs(posbox[1])];
499 rot = atan2(-refline[0], refline[1]);
500 sc = refline_mm / vectorlen2d(refline);
501 //echo("SH",sh,rot,sc);
502 mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){
503 import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3
507 module Machine_NewRearCurve(){
508 slant = atan2(4,210-10);
510 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
511 translate([ rearcurve_double_inrad,
513 -rearcurve_double_inrad + 10 ]){
514 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
516 Machine_NewRearProfile();
517 translate([0,-100]) Machine_NewRearProfile();
521 rotate([0,90,0]) rotate([90,0,0]) {
523 rotate_extrude(convexity=10, $fn=64)
525 translate([ 0, -rearcurve_double_inrad ])
526 Machine_NewRearProfile();
527 translate([0,0,-500])
528 cube([500,500,1000]);
531 translate([1,0,-rearcurve_double_inrad])
532 rotate([0,-90,0]) rotate([0,0,-90])
533 linear_extrude(height= rearcurve_strt_len + 1)
534 Machine_NewRearProfile();
538 module Machine_RearProfile(){ ////toplevel
541 translate([ -200 + machine_rear_to_front/2, -100 ]) {
547 module Machine_FrontProfile(){
550 translate([ machine_rear_to_front/2, -100 ]) {
556 module Machine_Curves(){ ////toplevel
557 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
561 translate([ -reartablet_x,
563 -reartablet_z + tablet_z_slop])
565 cube([ reartablet_x+1,
569 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
571 frontcurve_z_slop ]){
572 translate([0, -machine_rear_to_front, 0])
573 multmatrix([[1, -frontcurve_side_skew, 0, 0],
577 mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90])
578 linear_extrude(height= 200)
579 Machine_NewFrontProfile();
581 translate([ rearcurve_strt_len,
584 Machine_NewRearCurve();
589 module Machine(){ ////toplevel
594 module MachineEnvelope(){
596 p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y];
597 y_arm_t = cutout_tile11_y;
598 p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_y];
599 y_crv_b = y_arm_t + rearcurve_avoid_y;
601 translate([0,0,-50]) linear_extrude(height= 100){
602 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
603 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
607 function Rectangle_corners(c0, sz) =
608 // returns the corners of a rectangle from c0 to c0+sz
609 // if sz is positive, the corners are anticlockwise starting with c0
612 c0 + [ sz[0], sz[1] ],
615 function Rectangle_corners2posts(c) =
621 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
623 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
625 module Tile02(){ ////toplevel
627 c0 = tile02_tr + -sz;
628 c = Rectangle_corners(c0, sz);
629 posts = Rectangle_corners2posts(c);
633 Rectangle_TileBase(c);
635 RoundEdge(R_EDGE(c,0));
636 RoundEdge(R_EDGE(c,3));
637 InterlockEdge(R_EDGE(c,2), 0);
639 InterlockEdge(R_EDGE(c,1), 1);
645 module Tile12(){ ////toplevel
647 c0 = tile02_tr + [-sz[0], 0];
648 c = Rectangle_corners(c0, sz);
649 posts = Rectangle_corners2posts(c);
653 Rectangle_TileBase(c);
655 RoundEdge(R_EDGE(c,2));
656 RoundEdge(R_EDGE(c,3));
658 InterlockEdge(R_EDGE(c,0), 1);
659 InterlockEdge(R_EDGE(c,1), 1);
665 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
666 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
667 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
669 module Tile11(){ ////toplevel
671 c0 = tile01_tr + [-sz[0],0];
672 c = Rectangle_corners(c0, sz);
673 cnr_posts = Rectangle_corners2posts(c);
675 Posts_interpolate_one(cnr_posts[0],
676 cnr_posts[1] - [cutout_tile11_x, 0]),
677 [ cnr_posts[1] + [0, cutout_tile11_y],
683 Rectangle_TileBase(c);
685 RoundEdge(R_EDGE(c,2));
686 InterlockEdge(R_EDGE(c,3));
688 InterlockEdge(c[0], tile_01_11_cnr, 1);
689 InterlockEdge(tile_11_10_cnr, c[2], 1);
694 module Tile01(){ ////toplevel
696 c0 = tile01_tr + -sz;
697 c = Rectangle_corners(c0, sz);
698 cnr_posts = Rectangle_corners2posts(c);
700 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
701 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
702 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
707 Rectangle_TileBase(c);
709 RoundEdge(R_EDGE(c,0));
710 InterlockEdge(tile_01_11_cnr, c[3]);
711 InterlockEdge(R_EDGE(c,3));
713 InterlockEdge(c[1], tile_01_00_cnr, 1);
718 module Tile10(){ ////toplevel
720 c0 = tile01_tr + [0,0];
721 c = Rectangle_corners(c0, sz);
722 cnr_posts = Rectangle_corners2posts(c);
723 cty = cutout_tile11_y;
724 rcy = cty + rearcurve_avoid_y;
725 posts = [ cnr_posts[0] + [ 0, cty ],
726 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
727 cnr_posts[1] + [ 0, rcy ],
733 Rectangle_TileBase(c);
735 RoundEdge(R_EDGE(c,1));
736 RoundEdge(R_EDGE(c,2));
737 InterlockEdge(c[3], tile_11_10_cnr);
745 module Tile00(){ ////toplevel
747 c0 = tile01_tr + [0,-sz[1]];
748 c = Rectangle_corners(c0, sz);
750 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
751 c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ];
754 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
756 cnr_posts = Rectangle_corners2posts(c);
757 cty = cutout_tile01_y;
758 rcy = cty + frontcurve_avoid_y;
759 posts = [ cnr_posts[0],
761 cnr_posts[2] + [ 0, -rcy ],
762 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
763 cnr_posts[3] + [ 0, -cty ]
766 rc2 = [c1bis,c2bis,c[1]];
771 Rectangle_TileBase(c);
773 RoundEdge(R_EDGE(c,0));
774 RoundEdge(c[1], c1bis);
775 InterlockEdge(tile_01_00_cnr, c[0]);
778 translate([0,0,-20]) linear_extrude(height=40) {
779 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
782 RoundEdge(c1bis, c2bis);
791 module FitTest_general(c0,sz, dobrace=false){
792 c = Rectangle_corners(c0, sz);
796 Rectangle_TileBase(c);
798 translate(concat(c0, [-brace[2] + 0.1])){
800 cube(concat(sz,[brace[2]]) - [5,0,0]);
801 translate(brace + [0,0, -25])
802 cube(concat(sz, [50]) - brace*2 + [10,0,0]);
806 RoundEdge(R_EDGE(c,1));
812 module FitTest_Entire(){ ////toplevel
813 FitTest_general([-40,-80], [275,180], dobrace=true);
816 module FitTest_RearCurve(){ ////toplevel
817 FitTest_general([110,0], [170,100]);
820 module FitTest_FrontCurve(){ ////toplevel
825 translate([0,0,-8]) linear_extrude(height=18) {
826 translate(p0) square(sz);
831 module FitTest_PairLink(cut=false){ ////toplevel
832 cy0=-55; cy1=85; cx=127;
835 footrad_min = 2; footrad_max = 4; footrad_depth = 3;
839 straphole_x_max = legrad/sqrt(2) + footrad_max;
841 translate([cx - bar[0]/2, cy0, 0])
842 cube([bar[0], cy1-cy0, bar[1]]);
843 for (endy=[cy0,cy1]) {
845 translate([cx,endy,0]){
846 for (rot=[45:90:315]) {
848 translate([legrad,0,0]){
850 cylinder(r= footrad_max, h=1);
851 translate([0,0,-footrad_depth])
852 cylinder(r= footrad_min, h=1);
861 translate([s*legrad,0,0])
862 cylinder(r= footrad_max, h=bar[1]);
871 module FitTest_PairDemo(){ ////toplevel
872 translate([-120,0,0]){
874 %FitTest_FrontCurve();
875 %FitTest_RearCurve();
879 module RoundCornerDemo_plat(cnr){
880 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
883 module RoundCornerDemo(){ ////toplevel
884 cnr = [ [-2,-3], [13,-3], [-12,9] ];
885 translate([0,25,0]) RoundCornerDemo_plat(cnr);
886 translate([25,0,0]) RoundCornerAdd(cnr);
887 translate([-25,0,0]) RoundCornerCut(cnr);
888 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
890 RoundCornerDemo_plat(cnr);
896 module Demo(){ ////toplevel
897 translate(demo_slop*[-2,1]) color("blue") Tile12();
898 translate(demo_slop*[-2,0]) color("red") Tile02();
899 translate(demo_slop*[-2,1]) color("orange") Tile11();
900 translate(demo_slop*[-2,0]) color("purple") Tile01();
901 translate(demo_slop*[-3,1]) color("blue") Tile10();
902 translate(demo_slop*[-3,0]) color("red") Tile00();
911 //Machine_NewRearProfile();
912 //Machine_NewRearCurve();
913 //Machine_NewFrontProfile();