X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=sewing-table.scad.m4;h=201b28c909558178096882ea347354e98f100a97;hp=07ab0205d5cc4b42de7f3ca55e430deda0967791;hb=f8df25879ba1fb19b838f63701cd25a0162840f3;hpb=961433819f604121fef79da0605ffb2be7359ba1 diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 07ab020..201b28c 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -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_double_inrad = 26.10 + 8.04; -rearcurve_rad_slop = 0.5; +reartablet_z = 2.54; +reartablet_x = 5 + 1; +reartablet_y = 5; -rearcurve_avoid_y = rearcurve_rad + 10; +frontcurve_side_skew = 3.5 / 72; +frontcurve_avoid_y = 70; +frontcurve_z_slop = 0.75; // calculated @@ -86,6 +128,11 @@ 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 +143,9 @@ 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); } } } @@ -128,8 +174,9 @@ module TileBase(botleft, topright){ + [0, thehd[1]]); } 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; + translate( concat(botleft + [crossoff, 0], [0]) ) + Commitid_BestCount([ size[0] - 2*crossoff, thehd[1] ]); difference(){ mirror([0,0,1]) { translate(concat(botleft + [test_edge,test_edge], [test_tile_th])) @@ -347,35 +394,101 @@ module Machine_Arm(){ } } -module Machine_Rear(){ - big_rad = rearcurve_total_len - rearcurve_strt_len + rearcurve_rad; - small_rad = rearcurve_rad + rearcurve_rad_slop; - translate([ 250 + rearedge_len - cutout_l_end_y + big_rad, +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_RearProfile(){ + 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 ]){ - translate([ 0, - 0, - -rearcurve_rad - ]){ - rotate([0,-90,0]){ - rotate([0,0, 360/8/2]) - cylinder(r = small_rad, h= rearcurve_strt_len, - $fs= 8); + //%cube([20,20,20]); + translate([ -reartablet_x, + -1, + -reartablet_z]) + 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([ 0, + translate([ rearcurve_strt_len, 0, - big_rad - rearcurve_rad ]) { - intersection(){ - rotate([90,0,0]){ - rotate_extrude(convexity=10, $fs=8) { - translate([ big_rad, - 0 ]) - circle(r= small_rad, $fs=8); + rearcurve_z_slop ]){ + translate([ 1, + 0, + 0 + ]){ + rotate([0,-90,0])rotate([0,0,-90]){ + linear_extrude(height= rearcurve_strt_len + 1) + Machine_RearProfile(); + } + } + translate([ 0, + 0, + rearcurve_double_inrad ]) { + intersection(){ + rotate([90,0,0]){ + rotate_extrude(convexity=10, $fn=32) { + rotate([0,0,90]) translate([ 0, + -rearcurve_double_inrad ]) { + Machine_RearProfile(); + } + } } + mirror([0,0,1]) + translate([0,-75,0]) cube([150,150,150]); } - mirror([0,0,1]) - cube([100,100,100]); } } } @@ -383,11 +496,7 @@ module Machine_Rear(){ module Machine(){ ////toplevel Machine_Arm(); - minkowski(){ - Machine_Rear(); - translate([0,-5,-5]) - cube([50,5,5]); - } + Machine_Curves(); } function Rectangle_corners(c0, sz) = @@ -417,7 +526,7 @@ m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]') 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 +546,7 @@ 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 +564,13 @@ 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 +593,9 @@ 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( @@ -511,25 +619,57 @@ 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); - posts = [ cnr_posts[0], - cnr_posts[1] + [ -rearedge_len + cutout_l_end_x, 0 ], - cnr_posts[1] + [ 0, rearcurve_avoid_y ], + 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(tile_01_11_cnr, c[3]); - //InterlockEdge(R_EDGE(c,3)); + 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]); } - //InterlockEdge(c[1], tile_01_00_cnr, 1); + RoundCornerCut(rcs); Machine(); } + RoundCornerAdd(rcs); } module Demo(){ ////toplevel @@ -538,9 +678,13 @@ module Demo(){ ////toplevel 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_RearProfile();