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) {
270 echo("RCS",l_uvec,ctr);
272 INREFFRAME(this_cnr, right_cnr) {
273 cube(bigr*2 + adj, center=true);
278 INREFFRAME(ctr3,concat(lp1,[4])){
279 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
280 translate([-bigr*2 + adj, -bigr])
281 square([bigr*2, bigr*3]);
286 INREFFRAME(ctr3,concat(lp4,[0])){
287 translate([0,0,-bigr]) linear_extrude(height=bigr*2) {
288 translate([-bigr*2, -bigr*2])
289 square([bigr*2 + adj, bigr*3]);
296 module RoundCornerCut(ci) {
297 // ci should be [this_cnr, right_cnr, left_cnr]
298 // where right_cnr is to the right (ie, anticlockwise)
301 RoundCorner_selector(ci, -0.1);
303 cylinder(center=true, h=20, r= bigr);
307 module RoundCornerAdd(ci) {
310 RoundCorner_selector(ci, +0.1);
313 rotate_extrude(convexity=10, $fn=50)
316 circle(r= round_edge_rad, $fn=50);
325 module InterlockLobePlan(negative) {
326 r = negative ? interlock_negative_rad : interlock_rad;
327 ymir = negative ? 0 : 1;
331 translate([thehd[0], 0]){
335 translate([-dx, -0.1])
336 square([ dx*2, r/2 + 0.1 ]);
338 translate([ xi*dx, r ])
346 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
347 for (lobei = [ 0 : nlobes-1 ]) {
348 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
349 translate([lobex, 0, 0]) {
350 InterlockLobePlan(negative);
356 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
357 mirror([0, negative])
358 translate([slotshorter, iadj])
359 square([length - slotshorter*2, interlock_fine + iadj*2]);
363 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
364 plusth = negative * 1.0;
365 protr = interlock_fine + interlock_sq_adj;
368 z1 = -tile_th/2 - protr / interlock_fine_slope;
369 z3 = -tile_th/2 + protr / interlock_fine_slope;
371 negsign = negative ? -1 : +1;
372 yprotr = negsign * protr;
374 INREFFRAME(left_cnr, right_cnr) {
375 for (vsect = [ // zs0 zs1 ys0, ys1
376 [ -tile_th-plusth, plusth, 0, 0],
377 [ z1, z2, 0, yprotr],
378 [ z2, z3, yprotr, 0],
388 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
392 linear_extrude(height=zsd, convexity=10)
393 InterlockEdgePlan(negative, nlobes, length, !!ysd);
398 function TestPiece_holes2corners(holes) =
399 [ holes[0] + thehd_bl,
402 holes[0] + thehd_tl ];
404 module TestPiece1(){ ////toplevel
408 corners = TestPiece_holes2corners(holes);
409 rcs = R_CNR(corners,0);
412 TileBase(corners[0], corners[2]);
414 RoundEdge(corners[0], corners[1]);
415 RoundEdge(corners[3], corners[0]);
417 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
423 module TestPiece2(){ ////toplevel
427 corners = TestPiece_holes2corners(holes);
428 TileBase(corners[0], corners[2]);
430 RoundEdge(corners[0], corners[1]);
431 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
434 module TestDemo(){ ////toplevel
435 translate([ -thehd[0], 0 ])
438 translate([ +thehd[0] + demo_slop, 0 ])
442 module Machine_Arm(){
443 ysz = cutout_l_end_y_total;
444 // assume the round end is arc of a circle
445 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
446 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
448 translate([0,0,-30]) linear_extrude(height=60) {
449 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
451 translate([-50, -ysz/2])
453 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
454 circle(r=endrad, $fa=0.01,$fd=5);
460 module Machine_Profile(){
461 first_rear = machine_rear_profile[0];
462 below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
463 pol = concat( machine_rear_profile,
465 machine_front_profile);
466 skew_angle = atan2( first_front[1] - first_rear[1],
467 first_front[0] - first_rear[0] );
468 //echo(below_point, pol, skew_angle);
473 rotate([0,0, -skew_angle ]){
474 //translate( - first_front )
482 module Machine_NewRearProfile(){
483 // figures copied out of xfig edit boxes
484 // best not to edit the posbox size if poss - just move it
485 posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
486 sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
487 scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
488 scaleline_mm = 12+5+10+5+3;
489 sh = -[abs(posbox[0]), abs(posbox[1])];
490 rot = atan2(-sideline[0], sideline[1]);
491 sc = scaleline_mm / scaleline;
492 //echo("SH",sh,rot,sc);
493 scale(sc) rotate(rot) translate(sh){
494 import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
498 module Machine_NewRearCurve(){
499 slant = atan2(4,210-10);
501 translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
502 translate([ rearcurve_double_inrad,
504 -rearcurve_double_inrad + 10 ]){
505 rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
507 Machine_NewRearProfile();
508 translate([0,-100]) Machine_NewRearProfile();
512 rotate([0,90,0]) rotate([90,0,0]) {
514 rotate_extrude(convexity=10, $fn=64)
516 translate([ 0, -rearcurve_double_inrad ])
517 Machine_NewRearProfile();
518 translate([0,0,-500])
519 cube([500,500,1000]);
522 translate([1,0,-rearcurve_double_inrad])
523 rotate([0,-90,0]) rotate([0,0,-90])
524 linear_extrude(height= rearcurve_strt_len + 1)
525 Machine_NewRearProfile();
529 module Machine_RearProfile(){ ////toplevel
532 translate([ -200 + machine_rear_to_front/2, -100 ]) {
538 module Machine_FrontProfile(){
541 translate([ machine_rear_to_front/2, -100 ]) {
547 module Machine_Curves(){ ////toplevel
548 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
552 translate([ -reartablet_x,
554 -reartablet_z + tablet_z_slop])
556 cube([ reartablet_x+1,
560 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
562 frontcurve_z_slop ]){
563 translate([ 0, -first_front[0] , 0 ])
564 multmatrix([[1, -frontcurve_side_skew, 0, 0],
568 translate([ 0, first_front[0] , 0 ])
570 rotate([0,-90,0])rotate([0,0,-90]){
571 linear_extrude(height= 200)
572 Machine_FrontProfile();
575 translate([ rearcurve_strt_len,
578 Machine_NewRearCurve();
583 module Machine(){ ////toplevel
588 module MachineEnvelope(){
590 p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y];
591 y_arm_t = cutout_tile11_y;
592 p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_y];
593 y_crv_b = y_arm_t + rearcurve_avoid_y;
595 translate([0,0,-50]) linear_extrude(height= 100){
596 translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
597 translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
601 function Rectangle_corners(c0, sz) =
602 // returns the corners of a rectangle from c0 to c0+sz
603 // if sz is positive, the corners are anticlockwise starting with c0
606 c0 + [ sz[0], sz[1] ],
609 function Rectangle_corners2posts(c) =
615 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
617 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
619 module FitTest_general(c0,sz, dobrace=false){
620 c = Rectangle_corners(c0, sz);
624 Rectangle_TileBase(c);
626 translate(concat(c0, [-brace[2] + 0.1])){
628 cube(concat(sz,[brace[2]]) - [5,0,0]);
629 translate(brace + [0,0, -25])
630 cube(concat(sz, [50]) - brace*2 + [10,0,0]);
634 RoundEdge(R_EDGE(c,1));
640 module FitTest_Entire(){ ////toplevel
641 FitTest_general([-40,-80], [275,180], dobrace=true);
644 module FitTest_RearCurve(){ ////toplevel
645 FitTest_general([110,0], [170,100]);
648 module Tile02(){ ////toplevel
650 c0 = tile02_tr + -sz;
651 c = Rectangle_corners(c0, sz);
652 posts = Rectangle_corners2posts(c);
656 Rectangle_TileBase(c);
658 RoundEdge(R_EDGE(c,0));
659 RoundEdge(R_EDGE(c,3));
660 InterlockEdge(R_EDGE(c,2), 0);
662 InterlockEdge(R_EDGE(c,1), 1);
668 module Tile12(){ ////toplevel
670 c0 = tile02_tr + [-sz[0], 0];
671 c = Rectangle_corners(c0, sz);
672 posts = Rectangle_corners2posts(c);
676 Rectangle_TileBase(c);
678 RoundEdge(R_EDGE(c,2));
679 RoundEdge(R_EDGE(c,3));
681 InterlockEdge(R_EDGE(c,0), 1);
682 InterlockEdge(R_EDGE(c,1), 1);
688 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
689 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
690 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
692 module Tile11(){ ////toplevel
694 c0 = tile01_tr + [-sz[0],0];
695 c = Rectangle_corners(c0, sz);
696 cnr_posts = Rectangle_corners2posts(c);
698 Posts_interpolate_one(cnr_posts[0],
699 cnr_posts[1] - [cutout_tile11_x, 0]),
700 [ cnr_posts[1] + [0, cutout_tile11_y],
706 Rectangle_TileBase(c);
708 RoundEdge(R_EDGE(c,2));
709 InterlockEdge(R_EDGE(c,3));
711 InterlockEdge(c[0], tile_01_11_cnr, 1);
712 InterlockEdge(tile_11_10_cnr, c[2], 1);
717 module Tile01(){ ////toplevel
719 c0 = tile01_tr + -sz;
720 c = Rectangle_corners(c0, sz);
721 cnr_posts = Rectangle_corners2posts(c);
723 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
724 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
725 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
730 Rectangle_TileBase(c);
732 RoundEdge(R_EDGE(c,0));
733 InterlockEdge(tile_01_11_cnr, c[3]);
734 InterlockEdge(R_EDGE(c,3));
736 InterlockEdge(c[1], tile_01_00_cnr, 1);
741 module Tile10(){ ////toplevel
743 c0 = tile01_tr + [0,0];
744 c = Rectangle_corners(c0, sz);
745 cnr_posts = Rectangle_corners2posts(c);
746 cty = cutout_tile11_y;
747 rcy = cty + rearcurve_avoid_y;
748 posts = [ cnr_posts[0] + [ 0, cty ],
749 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
750 cnr_posts[1] + [ 0, rcy ],
756 Rectangle_TileBase(c);
758 RoundEdge(R_EDGE(c,1));
759 RoundEdge(R_EDGE(c,2));
760 InterlockEdge(c[3], tile_11_10_cnr);
768 module Tile00(){ ////toplevel
770 c0 = tile01_tr + [0,-sz[1]];
771 c = Rectangle_corners(c0, sz);
773 // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis
774 c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ];
777 (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ];
779 cnr_posts = Rectangle_corners2posts(c);
780 cty = cutout_tile01_y;
781 rcy = cty + frontcurve_avoid_y;
782 posts = [ cnr_posts[0],
784 cnr_posts[2] + [ 0, -rcy ],
785 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
786 cnr_posts[3] + [ 0, -cty ]
793 Rectangle_TileBase(c);
795 RoundEdge(R_EDGE(c,0));
796 RoundEdge(c[1], c1bis);
797 InterlockEdge(tile_01_00_cnr, c[0]);
800 translate([0,0,-20]) linear_extrude(height=40) {
801 polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]);
804 RoundEdge(c1bis, c2bis);
809 RoundCornerAdd([c1bis,c2bis,c[1]]);
812 module FitTest_FrontCurve(){ ////toplevel
817 translate([0,0,-8]) linear_extrude(height=18) {
818 translate(p0) square(sz);
823 module RoundCornerDemo_plat(cnr){
824 mirror([0,0,1]) linear_extrude(height=1) polygon(cnr);
827 module RoundCornerDemo(){ ////toplevel
828 cnr = [ [-2,-3], [13,-3], [-12,9] ];
829 translate([0,25,0]) RoundCornerDemo_plat(cnr);
830 translate([25,0,0]) RoundCornerAdd(cnr);
831 translate([-25,0,0]) RoundCornerCut(cnr);
832 translate([0,-25,0]) RoundCorner_selector(cnr, 0);
834 RoundCornerDemo_plat(cnr);
840 module Demo(){ ////toplevel
841 translate(demo_slop*[-2,1]) color("blue") Tile12();
842 translate(demo_slop*[-2,0]) color("red") Tile02();
843 translate(demo_slop*[-2,1]) color("orange") Tile11();
844 translate(demo_slop*[-2,0]) color("purple") Tile01();
845 translate(demo_slop*[-3,1]) color("blue") Tile10();
846 translate(demo_slop*[-3,0]) color("red") Tile00();
855 //Machine_NewRearProfile();
856 //Machine_NewRearCurve();