chiark / gitweb /
sewing-table: Machine Rear: add z slop to "tablet"
[reprap-play.git] / sewing-table.scad.m4
index 1d6688a9aa758043918e6ee5c38a794d17cee458..9c75224459c5399d26c5cee8538c0bb189245737 100644 (file)
@@ -30,33 +30,75 @@ demo_slop = 0.1;
 
 // 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_x = 22;
-cutout_l_end_y = 85;
+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 = cutout_l_end_x + cutout_l_end_curve;
 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
 
-// rear curve
+// front and rear curves
 
 rearedge_len = 170;
 
-rearcurve_rad = 25.4;
-rearcurve_strt_len = 65;
-rearcurve_total_len = 84;
+rearcurve_strt_len = 52;
+
+rearcurve_z_slop = 0.75;
+
+rearcurve_avoid_y = 35;
 
-rearcurve_rad_slop = 0.5;
+rearcurve_double_inrad = 26.10 + 8.04;
 
-rearcurve_avoid_y = rearcurve_rad + 10;
+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
 
@@ -81,11 +123,18 @@ thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
 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(){
@@ -96,10 +145,9 @@ module Post(){
       }
     }
     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);
       }
     }
   }
@@ -121,15 +169,22 @@ module TileBase(botleft, topright){
       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) ];
+      translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
+       Commitid_BestCount(cidszr);
       difference(){
        mirror([0,0,1]) {
          translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
@@ -338,7 +393,7 @@ module Machine_Arm(){
   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);
@@ -347,49 +402,134 @@ module Machine_Arm(){
   }
 }
 
-module Machine_Rear(){ ////toplevel
-  big_rad = rearcurve_total_len - rearcurve_strt_len + rearcurve_rad;
-  small_rad = rearcurve_rad + rearcurve_rad_slop;
-  translate([ 250 + rearedge_len - cutout_l_end_x + big_rad + rearcurve_rad,
-             cutout_tile11_y,
-             0 ]){
-    translate([ 0,
-               0,
-               -rearcurve_rad
-               ]){
-      rotate([0,-90,0]){
-       rotate([0,0, 360/8/2])
-         cylinder(r = small_rad, h= rearcurve_strt_len);
+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);
+       }
       }
     }
-    translate([ 0,
+  }
+}
+
+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,
-               big_rad - rearcurve_rad ]) {
-      intersection(){
-       rotate([90,0,0]){
-         rotate_extrude(convexity=10) {
-           translate([ big_rad,
-                       0 ]) {
-             hull(){
-               circle(r= small_rad);
-               translate([200,0])
-                 circle(r= small_rad);
-             }
-           }
-         }
+               -rearcurve_double_inrad + 10 ]){
+      rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){
+       hull(){
+         Machine_NewRearProfile();
+         translate([0,-100]) Machine_NewRearProfile();
        }
-       mirror([0,0,1])
-         cube([150,150,150]);
       }
     }
+    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_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_Rear();
+  Machine_Curves();
 }
-  
+
 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
@@ -415,9 +555,42 @@ m4_dnl    expands to two comma-separated corners:
 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)];
@@ -437,7 +610,7 @@ module Tile02(){ ////toplevel
 
 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)];
@@ -455,12 +628,13 @@ module Tile12(){ ////toplevel
   RoundCornerAdd(rcs);
 }
 
-tile_01_11_cnr = [250, 0] + [-cutout_tile11_x, 0];
-tile_11_10_cnr = [250, 0] + [0, cutout_tile11_y];
+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(
@@ -483,11 +657,9 @@ module Tile11(){ ////toplevel
   }
 }    
 
-tile_01_00_cnr = [250, 0] + [0, -cutout_tile01_y];
-
 module Tile01(){ ////toplevel
   sz = [250,170];
-  c0 = [0,-sz[1]];
+  c0 = tile01_tr + -sz;
   c = Rectangle_corners(c0, sz);
   cnr_posts = Rectangle_corners2posts(c);
   posts = concat(
@@ -511,13 +683,13 @@ module Tile01(){ ////toplevel
 
 module Tile10(){ ////toplevel
   sz = [250,250];
-  c0 = [sz[0],0];
+  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[1] + rearedge_len - cutout_l_end_x, cty ],
+           cnr_posts[1] + [ -sz[0] + rearedge_len - cutout_l_end_x, cty ],
            cnr_posts[1] + [ 0,                             rcy ],
            cnr_posts[2],
            cnr_posts[3] ];
@@ -536,15 +708,51 @@ module Tile10(){ ////toplevel
   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();