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 translate( concat(botleft_post, [ -tile_th ])
171 + 0.5 * [ post_dia, post_dia, 0 ] )
172 Commitid_BestCount_M( topright_post-botleft_post
173 + [-post_dia,-post_dia]
177 crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
178 translate( concat(botleft + [crossoff, 0], [0]) )
179 Commitid_BestCount([ size[0] - 2*crossoff, thehd[1] ]);
182 translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
183 cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
184 translate(concat(botleft_post, [-1]))
185 cube(concat(topright_post-botleft_post, [tile_th+2]));
189 cube(max(test_edge, tile_hard_edge_hole_dist)*2, center=true);
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 module RoundCornerCut(ci) {
229 // ci should be [this_cnr, right_cnr]
230 // where right_cnr is to the right (ie, anticlockwise)
233 offr= round_cnr_rad - round_edge_rad;
234 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
236 cube(offr*2 - 0.1, center=true);
237 translate([offr, offr, 0])
238 cylinder(center=true, h=20, r= offr);
243 module RoundCornerAdd(ci) {
246 bigr = round_cnr_rad - round_edge_rad;
247 INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE {
249 cube(bigr*2 + 0.1, center=true);
250 translate([bigr, bigr, 0])
251 rotate_extrude(convexity=10, $fn=50)
254 circle(r= round_edge_rad, $fn=50);
262 module InterlockLobePlan(negative) {
263 r = negative ? interlock_negative_rad : interlock_rad;
264 ymir = negative ? 0 : 1;
268 translate([thehd[0], 0]){
272 translate([-dx, -0.1])
273 square([ dx*2, r/2 + 0.1 ]);
275 translate([ xi*dx, r ])
283 module InterlockEdgePlan(negative, nlobes, length, dosquare=true) {
284 for (lobei = [ 0 : nlobes-1 ]) {
285 lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0);
286 translate([lobex, 0, 0]) {
287 InterlockLobePlan(negative);
293 slotshorter = negative ? -0.1 : interlock_fine_lenslop;
294 mirror([0, negative])
295 translate([slotshorter, iadj])
296 square([length - slotshorter*2, interlock_fine + iadj*2]);
300 module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) {
301 plusth = negative * 1.0;
302 protr = interlock_fine + interlock_sq_adj;
305 z1 = -tile_th/2 - protr / interlock_fine_slope;
306 z3 = -tile_th/2 + protr / interlock_fine_slope;
308 negsign = negative ? -1 : +1;
309 yprotr = negsign * protr;
311 INREFFRAME(left_cnr, right_cnr) {
312 for (vsect = [ // zs0 zs1 ys0, ys1
313 [ -tile_th-plusth, plusth, 0, 0],
314 [ z1, z2, 0, yprotr],
315 [ z2, z3, yprotr, 0],
325 [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ],
329 linear_extrude(height=zsd, convexity=10)
330 InterlockEdgePlan(negative, nlobes, length, !!ysd);
335 function TestPiece_holes2corners(holes) =
336 [ holes[0] + thehd_bl,
339 holes[0] + thehd_tl ];
341 module TestPiece1(){ ////toplevel
345 corners = TestPiece_holes2corners(holes);
346 rcs = [corners[0], corners[1]];
349 TileBase(corners[0], corners[2]);
351 RoundEdge(corners[0], corners[1]);
352 RoundEdge(corners[3], corners[0]);
354 InterlockEdge(corners[1], corners[2], 1, nlobes=1);
360 module TestPiece2(){ ////toplevel
364 corners = TestPiece_holes2corners(holes);
365 TileBase(corners[0], corners[2]);
367 RoundEdge(corners[0], corners[1]);
368 InterlockEdge(corners[3], corners[0], 0, nlobes=1);
371 module TestDemo(){ ////toplevel
372 translate([ -thehd[0], 0 ])
375 translate([ +thehd[0] + demo_slop, 0 ])
379 module Machine_Arm(){
380 ysz = cutout_l_end_y_total;
381 // assume the round end is arc of a circle
382 chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
383 endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
385 translate([0,0,-30]) linear_extrude(height=60) {
386 translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
388 translate([-100, -ysz/2])
390 translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
391 circle(r=endrad, $fa=0.01,$fd=5);
397 module Machine_Profile(){
398 first_rear = machine_rear_profile[0];
399 below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
400 pol = concat( machine_rear_profile,
402 machine_front_profile);
403 skew_angle = atan2( first_front[1] - first_rear[1],
404 first_front[0] - first_rear[0] );
405 echo(below_point, pol, skew_angle);
410 rotate([0,0, -skew_angle ]){
411 //translate( - first_front )
419 module Machine_RearProfile(){
422 translate([ -200 + machine_rear_to_front/2, -100 ]) {
428 module Machine_FrontProfile(){
431 translate([ machine_rear_to_front/2, -100 ]) {
437 module Machine_Curves(){ ////toplevel
438 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
442 translate([ -reartablet_x,
446 cube([ reartablet_x+1,
450 translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
452 frontcurve_z_slop ]){
453 translate([ 0, -first_front[0] , 0 ])
454 multmatrix([[1, -frontcurve_side_skew, 0, 0],
458 translate([ 0, first_front[0] , 0 ])
460 rotate([0,-90,0])rotate([0,0,-90]){
461 linear_extrude(height= 200)
462 Machine_FrontProfile();
465 translate([ rearcurve_strt_len,
472 rotate([0,-90,0])rotate([0,0,-90]){
473 linear_extrude(height= rearcurve_strt_len + 1)
474 Machine_RearProfile();
479 rearcurve_double_inrad ]) {
482 rotate_extrude(convexity=10, $fn=32) {
483 rotate([0,0,90]) translate([ 0,
484 -rearcurve_double_inrad ]) {
485 Machine_RearProfile();
490 translate([0,-75,0]) cube([150,150,150]);
497 module Machine(){ ////toplevel
502 function Rectangle_corners(c0, sz) =
503 // returns the corners of a rectangle from c0 to c0+sz
504 // if sz is positive, the corners are anticlockwise starting with c0
507 c0 + [ sz[0], sz[1] ],
510 function Rectangle_corners2posts(c) =
516 module Rectangle_TileBase(c) { TileBase(c[0], c[2]); }
518 function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1];
521 m4_dnl c is from Rectangle_corners and
522 m4_dnl ix is a corner number
523 m4_dnl expands to two comma-separated corners:
524 m4_dnl that denoted by ix, and the next one anticlockwise
525 m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]')
527 module Tile02(){ ////toplevel
529 c0 = tile02_tr + -sz;
530 c = Rectangle_corners(c0, sz);
531 posts = Rectangle_corners2posts(c);
535 Rectangle_TileBase(c);
537 RoundEdge(R_EDGE(c,0));
538 RoundEdge(R_EDGE(c,3));
539 InterlockEdge(R_EDGE(c,2), 0);
541 InterlockEdge(R_EDGE(c,1), 1);
547 module Tile12(){ ////toplevel
549 c0 = tile02_tr + [-sz[0], 0];
550 c = Rectangle_corners(c0, sz);
551 posts = Rectangle_corners2posts(c);
555 Rectangle_TileBase(c);
557 RoundEdge(R_EDGE(c,2));
558 RoundEdge(R_EDGE(c,3));
560 InterlockEdge(R_EDGE(c,0), 1);
561 InterlockEdge(R_EDGE(c,1), 1);
567 tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
568 tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
569 tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
571 module Tile11(){ ////toplevel
573 c0 = tile01_tr + [-sz[0],0];
574 c = Rectangle_corners(c0, sz);
575 cnr_posts = Rectangle_corners2posts(c);
577 Posts_interpolate_one(cnr_posts[0],
578 cnr_posts[1] - [cutout_tile11_x, 0]),
579 [ cnr_posts[1] + [0, cutout_tile11_y],
585 Rectangle_TileBase(c);
587 RoundEdge(R_EDGE(c,2));
588 InterlockEdge(R_EDGE(c,3));
590 InterlockEdge(c[0], tile_01_11_cnr, 1);
591 InterlockEdge(tile_11_10_cnr, c[2], 1);
596 module Tile01(){ ////toplevel
598 c0 = tile01_tr + -sz;
599 c = Rectangle_corners(c0, sz);
600 cnr_posts = Rectangle_corners2posts(c);
602 Posts_interpolate_one(R_EDGE(cnr_posts,0)),
603 [ cnr_posts[2] + [0, -cutout_tile01_y] ],
604 Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
609 Rectangle_TileBase(c);
611 RoundEdge(R_EDGE(c,0));
612 InterlockEdge(tile_01_11_cnr, c[3]);
613 InterlockEdge(R_EDGE(c,3));
615 InterlockEdge(c[1], tile_01_00_cnr, 1);
620 module Tile10(){ ////toplevel
622 c0 = tile01_tr + [0,0];
623 c = Rectangle_corners(c0, sz);
624 cnr_posts = Rectangle_corners2posts(c);
625 cty = cutout_tile11_y;
626 rcy = cty + rearcurve_avoid_y;
627 posts = [ cnr_posts[0] + [ 0, cty ],
628 cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
629 cnr_posts[1] + [ 0, rcy ],
635 Rectangle_TileBase(c);
637 RoundEdge(R_EDGE(c,1));
638 RoundEdge(R_EDGE(c,2));
639 InterlockEdge(c[3], tile_11_10_cnr);
647 module Tile00(){ ////toplevel
649 c0 = tile01_tr + [0,-sz[1]];
650 c = Rectangle_corners(c0, sz);
651 cnr_posts = Rectangle_corners2posts(c);
652 cty = cutout_tile01_y;
653 rcy = cty + frontcurve_avoid_y;
654 posts = [ cnr_posts[0],
656 cnr_posts[2] + [ 0, -rcy ],
657 cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
658 cnr_posts[3] + [ 0, -cty ]
663 Rectangle_TileBase(c);
665 RoundEdge(R_EDGE(c,0));
666 RoundEdge(R_EDGE(c,1));
667 InterlockEdge(tile_01_00_cnr, c[0]);
675 module Demo(){ ////toplevel
676 translate(demo_slop*[-2,1]) color("blue") Tile12();
677 translate(demo_slop*[-2,0]) color("red") Tile02();
678 translate(demo_slop*[-2,1]) color("orange") Tile11();
679 translate(demo_slop*[-2,0]) color("purple") Tile01();
680 translate(demo_slop*[-3,1]) color("blue") Tile10();
681 translate(demo_slop*[-3,0]) color("red") Tile00();
690 //Machine_RearProfile();