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 interlock_rad = interlock_dia/2;
127 interlock_negative_rad = interlock_rad + 0.125;
129 interlock_sq_adj = 0.2; // arbitrary
131 first_front = machine_front_profile[len(machine_front_profile)-1];
133 m4_define(`POST_TCROSSSZ',
134 `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
139 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
140 translate([0,0, tile_th]) {
141 cylinder(r= screw_big_dia/2, h= screw_big_len);
142 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
146 translate([0,0, tile_th/2]) {
147 cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
148 cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
154 module Posts(posts) {
156 translate(concat(p, [0]))
161 module TileBase(botleft, topright){
162 size = topright - botleft;
163 botleft_post = botleft + thehd_tr;
164 topright_post = topright + thehd_bl;
167 translate(concat(botleft, [0]))
168 cube(concat(size, [tile_th]));
170 cidsz = topright_post-botleft_post
171 + [-post_dia,-post_dia]
173 translate( concat(botleft_post, [ -tile_th ])
174 + 0.5 * [ post_dia, post_dia, 0 ] )
175 Commitid_BestCount_M(cidsz);
178 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
179 cidsz = [ thehd[0], size[1] - 2*crossoff ];
180 cidszr = [ cidsz[0], min(cidsz[1], 50) ];
181 translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
182 Commitid_BestCount(cidszr);
185 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
186 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
187 translate(concat(botleft_post, [-1]))
188 cube(concat(topright_post-botleft_post, [tile_th+2]));
192 cube(max(test_edge, tile_hard_edge_hole_dist)*2, center=true);
199 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; }
200 m4_define(`INREFFRAME',`
201 length_vec = ($2) - ($1);
202 length = dist2d([0,0], length_vec);
203 length_uvec = length_vec / length;
204 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
205 m = [ [ length_uvec[0], ortho_uvec[0], 0, ($1)[0], ],
206 [ length_uvec[1], ortho_uvec[1], 0, ($1)[1], ],
213 m4_dnl INREFFRAME(left_cnr, right_cnr, morevars)
214 m4_dnl INREFFRAME_EDGE { body; }
215 m4_define(`INREFFRAME_EDGE',`
216 translate([0,0, -round_edge_rad])
219 module RoundEdge(left_cnr, right_cnr) {
220 INREFFRAME(left_cnr, right_cnr)
224 cylinder(r= round_edge_rad, h= length, $fn=50);
225 translate([-1, 0, -20])
226 cube([length+2, 20, 20]);
231 module RoundCornerCut(ci) {
232 // ci should be [this_cnr, right_cnr]
233 // where right_cnr is to the right (ie, anticlockwise)
236 offr= round_cnr_rad - round_edge_rad;
237 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
239 cube(offr*2 - 0.1, center=true);
240 translate([offr, offr, 0])
241 cylinder(center=true, h=20, r= offr);
246 module RoundCornerAdd(ci) {
249 bigr = round_cnr_rad - round_edge_rad;
250 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
252 cube(bigr*2 + 0.1, center=true);
253 translate([bigr, bigr, 0])
254 rotate_extrude(convexity=10, $fn=50)
257 circle(r= round_edge_rad, $fn=50);
265 module InterlockLobePlan(negative) {
266 r = negative ? interlock_negative_rad : interlock_rad;
267 ymir = negative ? 0 : 1;
271 translate([thehd[0], 0]){
275 translate([-dx, -0.1])
276 square([ dx*2, r/2 + 0.1 ]);
278 translate([ xi*dx, r ])
286 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
287 for (lobei = [ 0 : nlobes-1 ]) {
288 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
289 translate([lobex, 0, 0]) {
290 InterlockLobePlan(negative);
296 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
297 mirror([0, negative])
298 translate([slotshorter, iadj])
299 square([length - slotshorter*2, interlock_fine + iadj*2]);
303 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
304 plusth = negative * 1.0;
305 protr = interlock_fine + interlock_sq_adj;
308 z1 = -tile_th/2 - protr / interlock_fine_slope;
309 z3 = -tile_th/2 + protr / interlock_fine_slope;
311 negsign = negative ? -1 : +1;
312 yprotr = negsign * protr;
314 INREFFRAME(left_cnr, right_cnr) {
315 for (vsect = [ // zs0 zs1 ys0, ys1
316 [ -tile_th-plusth, plusth, 0, 0],
317 [ z1, z2, 0, yprotr],
318 [ z2, z3, yprotr, 0],
328 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
332 linear_extrude(height=zsd, convexity=10)
333 InterlockEdgePlan(negative, nlobes, length, !!ysd);
338 function TestPiece_holes2corners(holes) =
339 [ holes[0] + thehd_bl,
342 holes[0] + thehd_tl ];
344 module TestPiece1(){ ////toplevel
348 corners = TestPiece_holes2corners(holes);
349 rcs = [corners[0], corners[1]];
352 TileBase(corners[0], corners[2]);
354 RoundEdge(corners[0], corners[1]);
355 RoundEdge(corners[3], corners[0]);
357 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
363 module TestPiece2(){ ////toplevel
367 corners = TestPiece_holes2corners(holes);
368 TileBase(corners[0], corners[2]);
370 RoundEdge(corners[0], corners[1]);
371 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
374 module TestDemo(){ ////toplevel
375 translate([ -thehd[0], 0 ])
378 translate([ +thehd[0] + demo_slop, 0 ])
382 module Machine_Arm(){
383 ysz = cutout_l_end_y_total;
384 // assume the round end is arc of a circle
385 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
386 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
388 translate([0,0,-30]) linear_extrude(height=60) {
389 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
391 translate([-100, -ysz/2])
393 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
394 circle(r=endrad, $fa=0.01,$fd=5);
400 module Machine_Profile(){
401 first_rear = machine_rear_profile[0];
402 below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
403 pol = concat( machine_rear_profile,
405 machine_front_profile);
406 skew_angle = atan2( first_front[1] - first_rear[1],
407 first_front[0] - first_rear[0] );
408 echo(below_point, pol, skew_angle);
413 rotate([0,0, -skew_angle ]){
414 //translate( - first_front )
422 module Machine_RearProfile(){
425 translate([ -200 + machine_rear_to_front/2, -100 ]) {
431 module Machine_FrontProfile(){
434 translate([ machine_rear_to_front/2, -100 ]) {
440 module Machine_Curves(){ ////toplevel
441 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
445 translate([ -reartablet_x,
449 cube([ reartablet_x+1,
453 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
455 frontcurve_z_slop ]){
456 translate([ 0, -first_front[0] , 0 ])
457 multmatrix([[1, -frontcurve_side_skew, 0, 0],
461 translate([ 0, first_front[0] , 0 ])
463 rotate([0,-90,0])rotate([0,0,-90]){
464 linear_extrude(height= 200)
465 Machine_FrontProfile();
468 translate([ rearcurve_strt_len,
475 rotate([0,-90,0])rotate([0,0,-90]){
476 linear_extrude(height= rearcurve_strt_len + 1)
477 Machine_RearProfile();
482 rearcurve_double_inrad ]) {
485 rotate_extrude(convexity=10, $fn=32) {
486 rotate([0,0,90]) translate([ 0,
487 -rearcurve_double_inrad ]) {
488 Machine_RearProfile();
493 translate([0,-75,0]) cube([150,150,150]);
500 module Machine(){ ////toplevel
505 function Rectangle_corners(c0, sz) =
506 // returns the corners of a rectangle from c0 to c0+sz
507 // if sz is positive, the corners are anticlockwise starting with c0
510 c0 + [ sz[0], sz[1] ],
513 function Rectangle_corners2posts(c) =
519 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
521 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
524 m4_dnl c is from Rectangle_corners and
525 m4_dnl ix is a corner number
526 m4_dnl expands to two comma-separated corners:
527 m4_dnl that denoted by ix, and the next one anticlockwise
528 m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]')
530 module Tile02(){ ////toplevel
532 c0 = tile02_tr + -sz;
533 c = Rectangle_corners(c0, sz);
534 posts = Rectangle_corners2posts(c);
538 Rectangle_TileBase(c);
540 RoundEdge(R_EDGE(c,0));
541 RoundEdge(R_EDGE(c,3));
542 InterlockEdge(R_EDGE(c,2), 0);
544 InterlockEdge(R_EDGE(c,1), 1);
550 module Tile12(){ ////toplevel
552 c0 = tile02_tr + [-sz[0], 0];
553 c = Rectangle_corners(c0, sz);
554 posts = Rectangle_corners2posts(c);
558 Rectangle_TileBase(c);
560 RoundEdge(R_EDGE(c,2));
561 RoundEdge(R_EDGE(c,3));
563 InterlockEdge(R_EDGE(c,0), 1);
564 InterlockEdge(R_EDGE(c,1), 1);
570 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
571 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
572 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
574 module Tile11(){ ////toplevel
576 c0 = tile01_tr + [-sz[0],0];
577 c = Rectangle_corners(c0, sz);
578 cnr_posts = Rectangle_corners2posts(c);
580 Posts_interpolate_one(cnr_posts[0],
581 cnr_posts[1] - [cutout_tile11_x, 0]),
582 [ cnr_posts[1] + [0, cutout_tile11_y],
588 Rectangle_TileBase(c);
590 RoundEdge(R_EDGE(c,2));
591 InterlockEdge(R_EDGE(c,3));
593 InterlockEdge(c[0], tile_01_11_cnr, 1);
594 InterlockEdge(tile_11_10_cnr, c[2], 1);
599 module Tile01(){ ////toplevel
601 c0 = tile01_tr + -sz;
602 c = Rectangle_corners(c0, sz);
603 cnr_posts = Rectangle_corners2posts(c);
605 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
606 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
607 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
612 Rectangle_TileBase(c);
614 RoundEdge(R_EDGE(c,0));
615 InterlockEdge(tile_01_11_cnr, c[3]);
616 InterlockEdge(R_EDGE(c,3));
618 InterlockEdge(c[1], tile_01_00_cnr, 1);
623 module Tile10(){ ////toplevel
625 c0 = tile01_tr + [0,0];
626 c = Rectangle_corners(c0, sz);
627 cnr_posts = Rectangle_corners2posts(c);
628 cty = cutout_tile11_y;
629 rcy = cty + rearcurve_avoid_y;
630 posts = [ cnr_posts[0] + [ 0, cty ],
631 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
632 cnr_posts[1] + [ 0, rcy ],
638 Rectangle_TileBase(c);
640 RoundEdge(R_EDGE(c,1));
641 RoundEdge(R_EDGE(c,2));
642 InterlockEdge(c[3], tile_11_10_cnr);
650 module Tile00(){ ////toplevel
652 c0 = tile01_tr + [0,-sz[1]];
653 c = Rectangle_corners(c0, sz);
654 cnr_posts = Rectangle_corners2posts(c);
655 cty = cutout_tile01_y;
656 rcy = cty + frontcurve_avoid_y;
657 posts = [ cnr_posts[0],
659 cnr_posts[2] + [ 0, -rcy ],
660 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
661 cnr_posts[3] + [ 0, -cty ]
666 Rectangle_TileBase(c);
668 RoundEdge(R_EDGE(c,0));
669 RoundEdge(R_EDGE(c,1));
670 InterlockEdge(tile_01_00_cnr, c[0]);
678 module Demo(){ ////toplevel
679 translate(demo_slop*[-2,1]) color("blue") Tile12();
680 translate(demo_slop*[-2,0]) color("red") Tile02();
681 translate(demo_slop*[-2,1]) color("orange") Tile11();
682 translate(demo_slop*[-2,0]) color("purple") Tile01();
683 translate(demo_slop*[-3,1]) color("blue") Tile10();
684 translate(demo_slop*[-3,0]) color("red") Tile00();
693 //Machine_RearProfile();