// cutout
+machine_rear_to_front = 85;
+
+machine_rear_profile = [
+ [ - 0, -0.00 ],
+ [ - 2, -0.10 ],
+ [ - 4, -0.20 ],
+ [ - 5, -0.30 ],
+ [ - 6, -0.40 ],
+ [ - 7, -0.50 ],
+ [ - 8, -0.75 ],
+ [ - 10, -1.50 ],
+ [ - 12, -2.25 ],
+ [ - 14, -3.25 ],
+ [ - 16, -4.25 ],
+ [ - 18, -5.75 ],
+ [ - 20, -8.00 ]
+ ];
+
+machine_front_profile = [
+ [ 128, -3.70, ],
+ [ 124, -2.90, ],
+ [ 120, -2.45, ],
+ [ 116, -2.10, ],
+ [ 112, -1.80, ],
+ [ 108, -1.55, ],
+ [ 104, -1.25, ],
+ [ 100, -1.00, ],
+ [ 96, -0.80, ],
+ [ 92, -0.65, ],
+ [ 88, -0.55, ],
+ [ 84, -0.50, ]
+ ];
+
cutout_l_end_y_front_slop = 0.5;
cutout_l_end_y_rear_slop = 0.5;
+cutout_l_end_x_slop = 0.25;
-cutout_l_end_y = 85;
+cutout_l_end_x = 22;
+cutout_l_end_y = machine_rear_to_front;
cutout_l_end_curve = 1;
cutout_l_end_y_total = cutout_l_end_y
+ cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop;
-tile01_tr = [250, 0];
+tile02_tr = [-250, 0];
+tile01_tr = [ 0, 0];
cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
-cutout_tile11_x = 22 + cutout_l_end_curve;
+cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve;
cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
+// front and rear curves
+
+rearedge_len = 170;
+
+rearcurve_strt_len = 52;
+
+rearcurve_z_slop = 0.75;
+
+rearcurve_avoid_y = 35;
+
+rearcurve_double_inrad = 26.10 + 8.04;
+
+reartablet_z = 2.54;
+reartablet_x = 5 + 1;
+reartablet_y = 8;
+
+frontcurve_side_skew = 3.5 / 72;
+frontcurve_avoid_y = 70;
+frontcurve_z_slop = 0.75;
+
// calculated
TEST = false;
thehd_bl = -thehd_tr;
thehd_br = -thehd_tl;
+tablet_z_slop = rearcurve_z_slop;
+
interlock_rad = interlock_dia/2;
interlock_negative_rad = interlock_rad + 0.125;
interlock_sq_adj = 0.2; // arbitrary
+first_front = machine_front_profile[len(machine_front_profile)-1];
+
+m4_define(`POST_TCROSSSZ',
+ `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
+
module Post(){
mirror([0,0,1]) {
difference(){
}
}
if (TEST) {
- tsz = tile_hard_edge_hole_dist - test_edge + 1;
translate([0,0, tile_th/2]) {
- cube([post_dia, tsz*2, tile_th], center=true);
- cube([tsz*2, post_dia, tile_th], center=true);
+ cube([post_dia, POST_TCROSSSZ, tile_th], center=true);
+ cube([POST_TCROSSSZ, post_dia, tile_th], center=true);
}
}
}
translate(concat(botleft, [0]))
cube(concat(size, [tile_th]));
if (!TEST) {
+ cidsz = topright_post-botleft_post
+ + [-post_dia,-post_dia]
+ + [0, thehd[1]];
+ cidszr = [ min(cidsz[0],50), min(cidsz[1],50) ];
+ echo("CID",cidsz,cidszr);
translate( concat(botleft_post, [ -tile_th ])
- + 0.5 * [ post_dia, post_dia, 0 ] )
- Commitid_BestCount_M( topright_post-botleft_post
- + [-post_dia,-post_dia]
- + [0, thehd[1]]);
+ + 0.5 * [ post_dia, post_dia, 0 ]
+ + 0.5 * concat( cidsz - cidszr, [ 0 ]) )
+ Commitid_BestCount_M(cidszr);
}
if (TEST) {
- translate( concat(botleft + [thehd[0], 0], [0]) )
- Commitid_BestCount([ size[0] - thehd[0]*2, thehd[1] ]);
+ crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
+ cidsz = [ thehd[0], size[1] - 2*crossoff ];
+ cidszr = [ cidsz[0], min(cidsz[1], 50) ];
difference(){
mirror([0,0,1]) {
translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
translate(concat(botleft_post, [-1]))
cube(concat(topright_post-botleft_post, [tile_th+2]));
}
-// minkowski(){
-// /
+ shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2;
+ minkowski(){
+ MachineEnvelope();
+ cube(shufflesz, center=true);
+ }
}
}
}
module Machine_Arm(){
ysz = cutout_l_end_y_total;
// assume the round end is arc of a circle
- //rad =
+ chordlen = dist2d([0,0], [ cutout_l_end_y, cutout_l_end_curve ]);
+ endrad = cutout_l_end_y / cutout_l_end_curve * chordlen;
translate([0,0,-30]) linear_extrude(height=60) {
translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) {
intersection(){
- translate([-100, -ysz/2])
+ translate([-50, -ysz/2])
square([400, ysz]);
-
+ translate([ endrad - cutout_tile11_x - cutout_l_end_x_slop, 0 ])
+ circle(r=endrad, $fa=0.01,$fd=5);
+ }
+ }
+ }
+}
+
+module Machine_Profile(){
+ first_rear = machine_rear_profile[0];
+ below_point = 0.5 * ( first_rear + first_front ) + [ 0, -10 ];
+ pol = concat( machine_rear_profile,
+ [ below_point ],
+ machine_front_profile);
+ skew_angle = atan2( first_front[1] - first_rear[1],
+ first_front[0] - first_rear[0] );
+ //echo(below_point, pol, skew_angle);
+ hull(){
+ for (z=[0,-40]) {
+ translate([0,z]) {
+ //scale([1,5])
+ rotate([0,0, -skew_angle ]){
+ //translate( - first_front )
+ polygon(pol);
+ }
+ }
+ }
+ }
+}
+
+module Machine_NewRearProfile(){
+ // figures copied out of xfig edit boxes
+ // best not to edit the posbox size if poss - just move it
+ posbox = 10 * ([7.2333,-14.1267] - [-16.2289,40.0289]); // box, Green
+ sideline = -10 * ([-6.2400,13.5600] - [-2.4467,28.2556]); // line, Blue
+ scaleline = 10 * dist2d([-1.1911,-20.4800], [-11.2600,4.0578]); // Green2
+ scaleline_mm = 12+5+10+5+3;
+ sh = -[abs(posbox[0]), abs(posbox[1])];
+ rot = atan2(-sideline[0], sideline[1]);
+ sc = scaleline_mm / scaleline;
+ //echo("SH",sh,rot,sc);
+ scale(sc) rotate(rot) translate(sh){
+ import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3
+ }
+}
+
+module Machine_NewRearCurve(){
+ slant = atan2(4,210-10);
+ //echo("SL",slant);
+ translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){
+ translate([ rearcurve_double_inrad,
+ 0,
+ -rearcurve_double_inrad + 10 ]){
+ rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
+ hull(){
+ Machine_NewRearProfile();
+ translate([0,-100]) Machine_NewRearProfile();
+ }
+ }
+ }
+ rotate([0,90,0]) rotate([90,0,0]) {
+ intersection(){
+ rotate_extrude(convexity=10, $fn=64)
+ rotate(90)
+ translate([ 0, -rearcurve_double_inrad ])
+ Machine_NewRearProfile();
+ translate([0,0,-500])
+ cube([500,500,1000]);
}
}
+ translate([1,0,-rearcurve_double_inrad])
+ rotate([0,-90,0]) rotate([0,0,-90])
+ linear_extrude(height= rearcurve_strt_len + 1)
+ Machine_NewRearProfile();
+ }
+}
+
+module Machine_RearProfile(){ ////toplevel
+ intersection(){
+ Machine_Profile();
+ translate([ -200 + machine_rear_to_front/2, -100 ]) {
+ square([200,200]);
+ }
}
}
-module Machine(){
+module Machine_FrontProfile(){
+ intersection(){
+ Machine_Profile();
+ translate([ machine_rear_to_front/2, -100 ]) {
+ square([200,200]);
+ }
+ }
+}
+
+module Machine_Curves(){ ////toplevel
+ translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
+ cutout_tile11_y,
+ 0 ]){
+ //%cube([20,20,20]);
+ translate([ -reartablet_x,
+ -1,
+ -reartablet_z + tablet_z_slop])
+ mirror([0,0,1])
+ cube([ reartablet_x+1,
+ reartablet_y+1,
+ 20 ]);
+ }
+ translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len,
+ cutout_tile11_y,
+ frontcurve_z_slop ]){
+ translate([ 0, -first_front[0] , 0 ])
+ multmatrix([[1, -frontcurve_side_skew, 0, 0],
+ [0, 1, 0, 0],
+ [0, 0, 1, 0],
+ [0, 0, 0, 1]])
+ translate([ 0, first_front[0] , 0 ])
+ mirror([1,0,0]){
+ rotate([0,-90,0])rotate([0,0,-90]){
+ linear_extrude(height= 200)
+ Machine_FrontProfile();
+ }
+ }
+ translate([ rearcurve_strt_len,
+ 0,
+ rearcurve_z_slop ]){
+ Machine_NewRearCurve();
+ }
+ }
+}
+
+module Machine(){ ////toplevel
Machine_Arm();
+ Machine_Curves();
}
-
+
+module MachineEnvelope(){
+ // used for testing
+ p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y];
+ y_arm_t = cutout_tile11_y;
+ p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_y];
+ y_crv_b = y_arm_t + rearcurve_avoid_y;
+
+ translate([0,0,-50]) linear_extrude(height= 100){
+ translate(p_arm_bl) square([400, y_arm_t] - p_arm_bl);
+ translate(p_crv_fl) square([400, y_crv_b] - p_crv_fl);
+ }
+}
+
function Rectangle_corners(c0, sz) =
// returns the corners of a rectangle from c0 to c0+sz
// if sz is positive, the corners are anticlockwise starting with c0
m4_dnl that denoted by ix, and the next one anticlockwise
m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]')
+module FitTest_general(c0,sz, dobrace=false){
+ c = Rectangle_corners(c0, sz);
+ brace = [7,7,9];
+ difference(){
+ union(){
+ Rectangle_TileBase(c);
+ if (dobrace) {
+ translate(concat(c0, [-brace[2] + 0.1])){
+ difference(){
+ cube(concat(sz,[brace[2]]) - [5,0,0]);
+ translate(brace + [0,0, -25])
+ cube(concat(sz, [50]) - brace*2 + [10,0,0]);
+ }
+ }
+ }
+ RoundEdge(R_EDGE(c,1));
+ }
+ Machine();
+ }
+}
+
+module FitTest_Entire(){ ////toplevel
+ FitTest_general([-40,-80], [275,180], dobrace=true);
+}
+
+module FitTest_RearCurve(){ ////toplevel
+ FitTest_general([110,0], [170,100]);
+}
+
+module FitTest_FrontCurve(){ ////toplevel
+ FitTest_general([110,-80], [170,80]);
+}
+
module Tile02(){ ////toplevel
sz = [100,170];
- c0 = -sz;
+ c0 = tile02_tr + -sz;
c = Rectangle_corners(c0, sz);
posts = Rectangle_corners2posts(c);
rcs = [R_EDGE(c,0)];
module Tile12(){ ////toplevel
sz = [100,250];
- c0 = [-sz[0], 0];
+ c0 = tile02_tr + [-sz[0], 0];
c = Rectangle_corners(c0, sz);
posts = Rectangle_corners2posts(c);
rcs = [R_EDGE(c,3)];
RoundCornerAdd(rcs);
}
+tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0];
+tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y];
+tile_01_00_cnr = tile01_tr - [0, cutout_tile01_y];
+
module Tile11(){ ////toplevel
sz = [250,250];
- c0 = [0,0];
+ c0 = tile01_tr + [-sz[0],0];
c = Rectangle_corners(c0, sz);
cnr_posts = Rectangle_corners2posts(c);
posts = concat(
RoundEdge(R_EDGE(c,2));
InterlockEdge(R_EDGE(c,3));
}
+ InterlockEdge(c[0], tile_01_11_cnr, 1);
+ InterlockEdge(tile_11_10_cnr, c[2], 1);
Machine();
- InterlockEdge(R_EDGE(c,0), 1);
}
}
+module Tile01(){ ////toplevel
+ sz = [250,170];
+ c0 = tile01_tr + -sz;
+ c = Rectangle_corners(c0, sz);
+ cnr_posts = Rectangle_corners2posts(c);
+ posts = concat(
+ Posts_interpolate_one(R_EDGE(cnr_posts,0)),
+ [ cnr_posts[2] + [0, -cutout_tile01_y] ],
+ Posts_interpolate_one(cnr_posts[2] - [cutout_tile11_x, 0],
+ cnr_posts[3])
+ );
+ difference(){
+ union(){
+ Rectangle_TileBase(c);
+ Posts(posts);
+ RoundEdge(R_EDGE(c,0));
+ InterlockEdge(tile_01_11_cnr, c[3]);
+ InterlockEdge(R_EDGE(c,3));
+ }
+ InterlockEdge(c[1], tile_01_00_cnr, 1);
+ Machine();
+ }
+}
+
+module Tile10(){ ////toplevel
+ sz = [250,250];
+ c0 = tile01_tr + [0,0];
+ c = Rectangle_corners(c0, sz);
+ cnr_posts = Rectangle_corners2posts(c);
+ cty = cutout_tile11_y;
+ rcy = cty + rearcurve_avoid_y;
+ posts = [ cnr_posts[0] + [ 0, cty ],
+ cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
+ cnr_posts[1] + [ 0, rcy ],
+ cnr_posts[2],
+ cnr_posts[3] ];
+ rcs = [R_EDGE(c,2)];
+ difference(){
+ union(){
+ Rectangle_TileBase(c);
+ Posts(posts);
+ RoundEdge(R_EDGE(c,1));
+ RoundEdge(R_EDGE(c,2));
+ InterlockEdge(c[3], tile_11_10_cnr);
+ }
+ RoundCornerCut(rcs);
+ Machine();
+ }
+ RoundCornerAdd(rcs);
+}
+
+module Tile00(){ ////toplevel
+ sz = [250,170];
+ c0 = tile01_tr + [0,-sz[1]];
+ c = Rectangle_corners(c0, sz);
+ cnr_posts = Rectangle_corners2posts(c);
+ cty = cutout_tile01_y;
+ rcy = cty + frontcurve_avoid_y;
+ posts = [ cnr_posts[0],
+ cnr_posts[1],
+ cnr_posts[2] + [ 0, -rcy ],
+ cnr_posts[2] + [ -sz[0] + rearedge_len - cutout_l_end_x, -cty ],
+ cnr_posts[3] + [ 0, -cty ]
+ ];
+ rcs = [R_EDGE(c,1)];
+ difference(){
+ union(){
+ Rectangle_TileBase(c);
+ Posts(posts);
+ RoundEdge(R_EDGE(c,0));
+ RoundEdge(R_EDGE(c,1));
+ InterlockEdge(tile_01_00_cnr, c[0]);
+ }
+ RoundCornerCut(rcs);
+ Machine();
+ }
+ RoundCornerAdd(rcs);
+}
+
module Demo(){ ////toplevel
translate(demo_slop*[-2,1]) color("blue") Tile12();
translate(demo_slop*[-2,0]) color("red") Tile02();
translate(demo_slop*[-2,1]) color("orange") Tile11();
+ translate(demo_slop*[-2,0]) color("purple") Tile01();
+ translate(demo_slop*[-3,1]) color("blue") Tile10();
+ translate(demo_slop*[-3,0]) color("red") Tile00();
%Machine();
}
//TestPiece1();
//TestPiece2();
//Demo();
+
+//Machine_Profile();
+//Machine_NewRearProfile();
+//Machine_NewRearCurve();
+//Machine_Curves();
+//Machine();
+//FitTest();
+//MachineEnvelope();