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=9c75224459c5399d26c5cee8538c0bb189245737;hp=1d6688a9aa758043918e6ee5c38a794d17cee458;hb=1c85c80f3976cd74fa32545076a7a380f64d024a;hpb=f50abb5e74802f0c908832fefad05db92568fafa diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 1d6688a..9c75224 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_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();