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=f89859cb197796621aecc9bfd1c17e612da27a8c;hp=8b69b445499503991010b0295de2ce8ca08be2c4;hb=c1294c0ded45cab6ef4bc88d609632a7ceafb505;hpb=f5b8036d8023025c07f267bdb6984f4cc9efe127 diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 8b69b44..f89859c 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -30,12 +30,78 @@ demo_slop = 0.1; // cutout -cutout_l_end_y = 85; +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 = 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; -cutout_tile01_y = 170 - 147; -cutout_tile11_x = 22 + cutout_l_end_curve; -cutout_tile11_y = cutout_l_end_curve - cutout_tile01_y; +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; + +// 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; + +frontcurve_strt_len = 60; +frontcurve_dualcurve_angle = 90 - 65; // calculated @@ -60,11 +126,18 @@ 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(){ @@ -75,10 +148,9 @@ 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); } } } @@ -100,20 +172,34 @@ 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] ]); - mirror([0,0,1]) { - translate(concat(botleft + [test_edge,test_edge], [test_tile_th])) - cube(concat(size - [test_edge,test_edge]*2, [tile_th])); - translate(concat(botleft_post, [-1])) - cube(concat(topright_post-botleft_post, [tile_th+2])); + 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])) + cube(concat(size - [test_edge,test_edge]*2, [tile_th])); + translate(concat(botleft_post, [-1])) + cube(concat(topright_post-botleft_post, [tile_th+2])); + } + shufflesz = max(test_edge, tile_hard_edge_hole_dist)*2; + minkowski(){ + MachineEnvelope(); + cube(shufflesz, center=true); + } } } } @@ -152,10 +238,11 @@ module RoundEdge(left_cnr, right_cnr) { } module RoundCornerCut(ci) { - // ci should be [this_cnr, right_cnr] + // ci should be [this_cnr, right_cnr, left_cnr] // where right_cnr is to the right (ie, anticlockwise) this_cnr = ci[0]; right_cnr = ci[1]; + left_cnr = ci[2]; offr= round_cnr_rad - round_edge_rad; INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { difference(){ @@ -169,6 +256,7 @@ module RoundCornerCut(ci) { module RoundCornerAdd(ci) { this_cnr = ci[0]; right_cnr = ci[1]; + left_cnr = ci[2]; bigr = round_cnr_rad - round_edge_rad; INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { intersection(){ @@ -301,7 +389,166 @@ module TestDemo(){ ////toplevel translate([ +thehd[0] + demo_slop, 0 ]) TestPiece2(); } + +module Machine_Arm(){ + ysz = cutout_l_end_y_total; + // assume the round end is arc of a circle + 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([-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_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 @@ -318,6 +565,8 @@ function Rectangle_corners2posts(c) = module Rectangle_TileBase(c) { TileBase(c[0], c[2]); } +function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1]; + m4_dnl R_EDGE(c,ix) m4_dnl c is from Rectangle_corners and m4_dnl ix is a corner number @@ -325,9 +574,38 @@ 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 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)]; @@ -347,7 +625,7 @@ 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)]; @@ -365,11 +643,159 @@ module Tile12(){ ////toplevel 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 = tile01_tr + [-sz[0],0]; + c = Rectangle_corners(c0, sz); + cnr_posts = Rectangle_corners2posts(c); + posts = concat( + Posts_interpolate_one(cnr_posts[0], + cnr_posts[1] - [cutout_tile11_x, 0]), + [ cnr_posts[1] + [0, cutout_tile11_y], + cnr_posts[2], + cnr_posts[3] + ]); + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + 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(); + } +} + +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); + + // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis + c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ]; + c1bis = [ c[1][0], + c[2][1] - + (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ]; + + 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(){ + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,0)); + RoundEdge(c[1], c1bis); + InterlockEdge(tile_01_00_cnr, c[0]); + } + RoundCornerCut(rcs); + translate([0,0,-20]) linear_extrude(height=40) { + polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]); + } + } + RoundEdge(c1bis, c2bis); + } + Machine(); + } + RoundCornerAdd(rcs); + RoundCornerAdd([c1bis,c2bis,c[1]]); +} + +module FitTest_FrontCurve(){ ////toplevel + p0 = [110,-80]; + sz = [170,80]; + intersection() { + Tile00(); + translate([0,0,-8]) linear_extrude(height=18) { + translate(p0) square(sz); + } + } +} + 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();