X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=sewing-table.scad.m4;h=b71e04110cc327b69d281f314d33d066402a0221;hb=f1824fce4c0b4420e0ba377d8d8a4e43e42e4a7d;hp=b5ee987370ca4272e9687b97106b90797b7d8483;hpb=6371b5cb46cde0d570f2283d800d0c674e265873;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index b5ee987..b71e041 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -7,21 +7,115 @@ ply_th = 18; ply_hole_dia = 15; ply_edge_min = 10; +ply_hole_dia_real = 12; + tile_th = 3; post_dia = 8; post_shorter = 1; -screw_dia = 2.2; +$screw_dia = 3.2; screw_big_dia = 3.6; screw_big_len = 4.0; round_edge_rad = 2.0; +round_cnr_rad = 10; + interlock_dia = 10; +interlock_fine = 0.66; + +interlock_fine_slope = 1.0; +interlock_fine_lenslop = 1.0; + +demo_slop = 0.1; + +leg_height = 53.75 - 0.95; + +leg_hole_dia = 5 + 0.75; +leg_big_dia = 37; +leg_bot_dia = 15; +leg_top_flat_z = 2; +leg_top_thick = 8; + +leg_midspc_dia = 20; +leg_bot_thick = 8; +leg_bot_mid_dia = 12; + +leg_fin_top_w = 3; +leg_fin_bot_w = 5; +leg_fin_bot_rad = 30; +leg_fin_bot_flat_z = 5; + +leg_n_fins = 4; +leg_n_tubules = 4; +leg_tubule_dia = 4; + +// spacer + +spacer_ext_slop = 0.25; +spacer_int_slop = 0.25; +spacer_height = 10; + +// cutout + +machine_rear_to_front = 84 + 0.25 - 1.4; + +cutout_l_end_y_front_slop = 0.5; +cutout_l_end_y_rear_slop = 0.5; + +cutout_l_end_x = 22; +cutout_l_end_y = machine_rear_to_front; +cutout_l_end_new_x_slop = 1.4 - 1.95; +cutout_l_end_y_total = cutout_l_end_y + + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop; + +tile02_tr = [-250, 0]; +tile01_tr = [ 0, 0]; + +cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop; +cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y; + +// front and rear curves + +rearedge_len = 170 + 0.70; +frontedge_len = 170; + +rearcurve_strt_len = 52; + +rearcurve_z_slop = -0.50; + +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 = 50; +frontcurve_dualcurve_angle = 30; + +teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ], + [ 180, 90 ], + [ 190, -80 ], // do not change index of this one + [ 0, 70 ], [ 0, -35 ], + ]; + +teststrap = [ 3, 5 ]; +teststrap_peg = [7.5, 3.5]; + +ply_edge_hole_dist_real = 14; // calculated +TEST = false; +JIG = false; + ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2; echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist)); @@ -41,45 +135,139 @@ thehd_tl = [ -thehd_tr[0], thehd_tr[1] ]; thehd_bl = -thehd_tr; thehd_br = -thehd_tl; +tablet_z_slop = 1.00; + interlock_rad = interlock_dia/2; interlock_negative_rad = interlock_rad + 0.125; +interlock_sq_adj = 0.2; // arbitrary + +leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) - + pow(leg_fin_top_w/2,2) ); + +leg_tubule_pos_rad = leg_big_dia/2 * 0.6; + +m4_define(`POST_TCROSSSZ', + `2*( tile_hard_edge_hole_dist - test_edge + 1 )') + module Post(){ mirror([0,0,1]) { - difference(){ - cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter); - translate([0,0, tile_th]) { - cylinder(r= screw_big_dia/2, h= screw_big_len); - cylinder(r= screw_dia/2, h= ply_th, $fn=20); + if (!JIG) { + difference(){ + cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter); + translate([0,0, tile_th]) { + cylinder(r= screw_big_dia/2, h= screw_big_len); + cylinder(r= $screw_dia/2, h= ply_th, $fn=20); + } + } + } + if (TEST) { + translate([0,0, tile_th/2]) { + cube([post_dia, POST_TCROSSSZ, tile_th], center=true); + cube([POST_TCROSSSZ, post_dia, tile_th], center=true); + } + } + if (JIG) { + translate([0,0, tile_th/2]) { + cube([POST_TCROSSSZ, POST_TCROSSSZ, tile_th], center=true); } } } } +module PostHole(){ + if (JIG) { + translate([0,0,-5]) + cylinder(r= post_dia/2 + jig_post_hole_slop, h=10); + translate([0,0, -jig_min_th]) + cylinder(r= ply_hole_dia_real/2, h = 5); + for (rot=[0:90:270]) rotate(rot) { + translate([ ply_edge_hole_dist_real, 0, 0 ]) + cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true); + } + } +} + module Posts(posts) { for (p= posts) { translate(concat(p, [0])) Post(); } } +module PostHoles(posts) { + for (p= posts) { + translate(concat(p, [0])) + PostHole(); + } +} module TileBase(botleft, topright){ size = topright - botleft; botleft_post = botleft + thehd_tr; - topright_post = topright - thehd_bl; - echo(botleft_post, topright_post); + topright_post = topright + thehd_bl; difference(){ mirror([0,0,1]) translate(concat(botleft, [0])) cube(concat(size, [tile_th])); - translate( concat(botleft_post, [-tile_th]) - + 0.5 * [ post_dia, post_dia, 0 ] ) - Commitid_BestCount_M( topright_post-botleft_post - + [0, thehd[1] ] - + [-post_dia,-post_dia] ); + if (!(TEST || JIG)) { + 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 ] + + 0.5 * concat( cidsz - cidszr, [ 0 ]) ) + Commitid_BestCount_M(cidszr); + } + if ((TEST || JIG)) { + crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2; + cidsz = [ thehd[0], size[1] - 2*crossoff ]; + cidszr = [ cidsz[0], min(cidsz[1], 50) ]; + if (TEST) + 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*2])); + 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); + } + if (JIG) { + translate([0,0,-20]) linear_extrude(height=20) { + for (diag=[[ +1, botleft ], + [ -1, [topright[0], botleft[1]] ]]) { + translate(diag[1]) + rotate(atan2(size[1], diag[0] * size[0])) + translate([0, -test_edge/2]) + square([vectorlen2d(size), test_edge]); + } + } + } + } + } } } +m4_dnl R_EDGE(c,ix) +m4_dnl c is from Rectangle_corners and +m4_dnl ix is a corner number +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]') + +m4_dnl R_CNR(c,ix) +m4_dnl c is from Rectangle_corners and +m4_dnl ix is a corner number +m4_dnl expands to an array of corners as for RoundCorner +m4_define(`R_CNR',`[ $1[$2], $1[(($2)+1)%4], $1[(($2)+3)%4] ]') + m4_dnl INREFFRAME(left_cnr, right_cnr, morevars) { body; } m4_define(`INREFFRAME',` length_vec = ($2) - ($1); @@ -112,21 +300,80 @@ module RoundEdge(left_cnr, right_cnr) { } } -module RoundLeftCorner(this_cnr, right_cnr) { - INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { - difference(){ - sphere(r= round_edge_rad, $fn=60); - translate([0,0, -20]) - cube([20,20,20]); +m4_define(`ROUNDCORNER_VARS',` + this_cnr = ci[0]; + right_cnr = ci[1]; + left_cnr = ci[2]; + bigr= round_cnr_rad - round_edge_rad; + l_uvec = unitvector2d(left_cnr - this_cnr); + r_uvec = unitvector2d(right_cnr - this_cnr); + lp1 = left_cnr + clockwise2d(l_uvec) * bigr; + lp2 = this_cnr + clockwise2d(l_uvec) * bigr; + lp3 = this_cnr - clockwise2d(r_uvec) * bigr; + lp4 = right_cnr - clockwise2d(r_uvec) * bigr; + ctr = line_intersection_2d(lp1,lp2,lp3,lp4); + ctr3 = concat(ctr,[0]) +') + +module RoundCorner_selector(ci, adj) { + ROUNDCORNER_VARS; + intersection(){ + union(){ + INREFFRAME(ctr3,concat(lp1,[4])){ + translate([0,0,-bigr]) linear_extrude(height=bigr*2) { + translate([-bigr*2 + adj, -bigr]) + square([bigr*2, bigr*3]); + } + } + } + union(){ + INREFFRAME(ctr3,concat(lp4,[0])){ + translate([0,0,-bigr]) linear_extrude(height=bigr*2) { + translate([-bigr*2, -bigr*2]) + square([bigr*2 + adj, bigr*3]); + } + } + } + } +} + +module RoundCornerCut(ci) { + // ci should be [this_cnr, right_cnr, left_cnr] + // where right_cnr is to the right (ie, anticlockwise) + ROUNDCORNER_VARS; + difference(){ + RoundCorner_selector(ci, -0.1); + translate(ctr3) + cylinder(center=true, h=20, r= bigr); + } +} + +module RoundCornerAdd(ci) { + ROUNDCORNER_VARS; + intersection(){ + RoundCorner_selector(ci, +0.1); + INREFFRAME_EDGE { + translate(ctr3){ + rotate_extrude(convexity=10, $fn=50) + translate([bigr, 0]) + difference(){ + circle(r= round_edge_rad, $fn=50); + mirror([1,1]) + square([20,20]); + } + } } } } -module InterlockPlan(r, ymir) { +module InterlockLobePlan(negative) { + r = negative ? interlock_negative_rad : interlock_rad; + ymir = negative ? 0 : 1; + dx = sqrt(3) * r; $fn= 80; translate([thehd[0], 0]){ - mirror([0,ymir,0]){ + mirror([0,ymir]){ circle(r=r); difference(){ translate([-dx, -0.1]) @@ -140,24 +387,56 @@ module InterlockPlan(r, ymir) { } } -module InterlockCore(r, plusth, ymir) { - translate([0, 0, plusth]){ - mirror([0,0,1]){ - linear_extrude(height=tile_th+plusth*2, convexity=10){ - InterlockPlan(r, ymir); - } +module InterlockEdgePlan(negative, nlobes, length, dosquare=true) { + for (lobei = [ 0 : nlobes-1 ]) { + lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0); + translate([lobex, 0, 0]) { + InterlockLobePlan(negative); } } -} -module InterlockNegative(this_cnr, right_cnr) { - INREFFRAME(this_cnr, right_cnr) - InterlockCore(interlock_negative_rad, 1, 0); + if (dosquare) { + iadj = 0; + slotshorter = negative ? -0.1 : interlock_fine_lenslop; + mirror([0, negative]) + translate([slotshorter, iadj]) + square([length - slotshorter*2, interlock_fine + iadj*2]); + } } -module Interlock(this_cnr, right_cnr) { - INREFFRAME(this_cnr, right_cnr) - InterlockCore(interlock_rad, 0, 1); +module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) { + plusth = negative * 1.0; + protr = interlock_fine + interlock_sq_adj; + + z2 = -tile_th/2; + z1 = -tile_th/2 - protr / interlock_fine_slope; + z3 = -tile_th/2 + protr / interlock_fine_slope; + + negsign = negative ? -1 : +1; + yprotr = negsign * protr; + + INREFFRAME(left_cnr, right_cnr) { + for (vsect = [ // zs0 zs1 ys0, ys1 + [ -tile_th-plusth, plusth, 0, 0], + [ z1, z2, 0, yprotr], + [ z2, z3, yprotr, 0], + ]) { + zs0 = vsect[0]; + zs1 = vsect[1]; + zsd = zs1-zs0; + ys0 = vsect[2]; + ys1 = vsect[3]; + ysd = ys1-ys0; + sl = ysd/zsd; + m = [ [ 1,0, 0, 0 ], + [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ], + [ 0,0, 1, zs0 ], + [ 0,0, 0, 1 ] ]; + multmatrix(m) + linear_extrude(height=zsd, convexity=10) + InterlockEdgePlan(negative, nlobes, length, !!ysd); + } + } } function TestPiece_holes2corners(holes) = @@ -171,14 +450,19 @@ module TestPiece1(){ ////toplevel [ 0, 0] ]; corners = TestPiece_holes2corners(holes); + rcs = R_CNR(corners,0); difference(){ - TileBase(corners[0], corners[2]); - InterlockNegative(corners[1], corners[2]); + union(){ + TileBase(corners[0], corners[2]); + Posts(holes); + RoundEdge(corners[0], corners[1]); + RoundEdge(corners[3], corners[0]); + } + InterlockEdge(corners[1], corners[2], 1, nlobes=1); + RoundCornerCut(rcs); + PostHoles(holes); } - Posts(holes); - RoundEdge(corners[0], corners[1]); - RoundEdge(corners[3], corners[0]); - RoundLeftCorner(corners[0], corners[1]); + RoundCornerAdd(rcs); } module TestPiece2(){ ////toplevel @@ -186,20 +470,724 @@ module TestPiece2(){ ////toplevel [ 50, 0] ]; corners = TestPiece_holes2corners(holes); - TileBase(corners[0], corners[2]); - Posts(holes); - RoundEdge(corners[0], corners[1]); - Interlock(corners[3], corners[0]); + difference(){ + union(){ + TileBase(corners[0], corners[2]); + Posts(holes); + RoundEdge(corners[0], corners[1]); + InterlockEdge(corners[3], corners[0], 0, nlobes=1); + } + PostHoles(holes); + } } -module Demo(){ ////toplevel +module TestDemo(){ ////toplevel translate([ -thehd[0], 0 ]) color("blue") TestPiece1(); - translate([ +thehd[0], 0 ]) + translate([ +thehd[0] + demo_slop, 0 ]) TestPiece2(); } + +module PostTestPiece(){ ////toplevel + hole_sizes = [2.8, 3.0, 3.1, 3.134, 3.168, 3.2, 3.3, 3.5]; + nholes = len(hole_sizes)*2; + nrows = 4; + stride = post_dia*1.5; + rect_sz = stride * [ nrows, + ceil(nholes/nrows) ]; + corners = Rectangle_corners(-stride * 0.5 * [1,1], rect_sz); + difference(){ + union(){ + TileBase(corners[0], corners[2]); + RoundEdge(corners[0], corners[1]); + for (i= [ 0: nholes-1 ]) { + $screw_dia = hole_sizes[ floor(i/2) ]; + translate(stride * [ (nrows-1) - (i % nrows), + floor(i / nrows), + 0 + ]) { + Posts([[0,0]]); + color("blue") + mirror([0,0,1]) + translate([post_dia/2, -post_dia/2, 1]) + cube([1, post_dia * (i / nholes), tile_th]); + } + } + } + } +} + +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_NewFrontProfile(){ + // figures copied out of xfig edit boxes + // best not to edit the posbox size if poss - just move it + posbox = 10 * ([11.8022,8.0600] - [4.2044,19.1867]); // box, Green + refline = 10 * ([7.6778,16.7222] - [27.8689,17.6578]); // line, Blue + refline_mm = (11-1)*10; + sh = -[abs(posbox[0]), abs(posbox[1])]; + rot = atan2(-refline[0], refline[1]); + sc = refline_mm / vectorlen2d(refline); + //echo("SH",sh,rot,sc); + mirror([1,0]) scale(sc) rotate(rot+90) translate(sh){ + import("sewing-table-front-profile.dxf", convexity=10); // spline, Pink3 + } +} + +module Machine_NewEndProfile(){ + // figures copied out of xfig edit boxes + // NB that y coords are reversed - xfig origin is at bottom left + posboxs = 10 * [[4.0400,17.7956], [11.6622,32.5511]]; // box, Pink3 + refline = 10 * ([8.4000,22.6000] - [50.3000,22.2000]); // line, Blue + refline_mm = 10 * (11 - 2.5); + sidelines = 10 * [[[9.0889,20.6178], [8.9644,14.6889]], + [[50.3800,21.9578], [50.1933,14.4933]]]; // lines, Blue3 + baseline = 10 * [[8.4000,18.0822], [50.3000,17.6822]]; // line, Green2 + + rot_adj = -0.38; + + posbox = [min(posboxs[0][0],posboxs[1][0]), + max(posboxs[0][1],posboxs[1][1])]; + + m4_define(`MNEP_ELP', + `line_intersection_2d(baseline[0],baseline[1], + sidelines[$1][0],sidelines[$1][1])') + endline = [MNEP_ELP(0),MNEP_ELP(1)]; + + rot = atan2(-refline[1], -refline[0]); + sc = refline_mm / vectorlen2d(refline); + sh = (0.5 * (endline[0] + endline[1])) - posbox; + + ellen = sc * dist2d(endline[0],endline[1]); + scy = cutout_l_end_y_total / ellen; + + scale([scy,1]) scale(sc) rotate(rot + rot_adj) translate(-[sh[0],-sh[1]]){ + + mirror([0,1]){ + //%translate(1 * (posboxs[0] - posbox)) square(50); + //%translate(1 * (posboxs[1] - posbox)) square(50); +// %translate(1 * (baseline[0] - posbox)) square([50,10]); + +// %translate(1 * (endline[0] - posbox)) square([50,10]); +// %translate(1 * (endline[1] - posbox)) square([50,10]); + +// %translate(1 * (sidelines[0][0] - posbox)) square([10,50]); +// %translate(1 * (sidelines[0][1] - posbox)) square([10,50]); +// %translate(1 * (sidelines[1][0] - posbox)) square([10,50]); +// %translate(1 * (sidelines[1][1] - posbox)) square([10,50]); + } + + import("sewing-table-end-profile.dxf", convexity=10); // spline, Pink3 + } +} + +module Machine_NewEndProfileDemo(){ ////toplevel + translate([0,5,0]) Machine_NewEndProfile(); + translate([0,5,1]) color("blue") mirror([1,0]) Machine_NewEndProfile(); + mirror([0,1,0]){ + translate([0,5, 0]) Machine_NewEndProfile(); + translate([0,5,-1]) color("blue") mirror([1,0]) Machine_NewEndProfile(); + } +} + +module Machine_NewArm(){ + translate([0,0,-30]) linear_extrude(height=60) { + translate(tile01_tr + [ -cutout_l_end_x - cutout_l_end_new_x_slop, + (-cutout_tile01_y + cutout_tile11_y)/2 ]){ + rotate(-90){ + hull(){ + for (d=[0,400]) + translate([0,d]) Machine_NewEndProfile(); + } + } + } + } +} + +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_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 + frontedge_len, + cutout_tile11_y, + frontcurve_z_slop ]){ + translate([0, -machine_rear_to_front, 0]) + multmatrix([[1, -frontcurve_side_skew, 0, 0], + [0, 1, 0, 0], + [0, 0, 1, 0], + [0, 0, 0, 1]]) + mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90]) + linear_extrude(height= 200) + Machine_NewFrontProfile(); + } + translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len, + cutout_tile11_y, + frontcurve_z_slop ]){ + translate([ rearcurve_strt_len, + 0, + rearcurve_z_slop ]){ + Machine_NewRearCurve(); + } + } +} + +module TestStrapSlots(){ + pegwidth = teststrap_peg[0]; + for (pos = teststrapslots_at) { + echo("TSS",pos); + translate(concat(pos,[0])) + for (mx = [0,1]) mirror([mx,0,0]) { + translate([ pegwidth/2, -teststrap[1]/2, -20 ]) + cube(concat(teststrap,[40])); + } + } +} + +module TestStrapPeg_any(l){ cube(concat([l],teststrap_peg)); } + +module TestStrapPeg_Short(){ ////toplevel + TestStrapPeg_any(35); +} + +module TestStrapPeg_Long(){ ////toplevel + TestStrapPeg_any(60); +} + +module PostSpacer(){ ////toplevel + $fn = 50; + difference(){ + cylinder(r= ply_hole_dia_real/2 - spacer_ext_slop, + h= spacer_height); + translate([0,0,-1]) + cylinder(r= post_dia/2 + spacer_int_slop, + h= ply_th + 2); + } +} + +module Machine(){ ////toplevel + Machine_NewArm(); + Machine_Curves(); + if (TEST) + TestStrapSlots(); +} + +module MachineEnvelope(){ + // used for testing + p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y]; + y_arm_t = cutout_tile11_y; + p_crv_fl = p_arm_bl + [frontedge_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); + } +} + +module Leg(){ ////toplevel + difference(){ + union(){ + hull(){ + mirror([0,0,1]) + cylinder(r= leg_big_dia/2, h=leg_top_flat_z, $fn=100); + translate([0,0, -leg_top_thick]) + cylinder(r= leg_bot_dia/2, height=1, $fn=100); + } + if (!TEST) + translate([0,0,-leg_height]) + cylinder(r= leg_bot_mid_dia/2, h=leg_bot_thick); + for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) { + hull(){ + mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0]) + cube([ leg_fin_top_rad - 0.1, + leg_fin_top_w, + 1 ]) + ; + translate([0, -leg_fin_bot_w/2, -leg_height]) + cube([ leg_fin_bot_rad, + leg_fin_bot_w, + leg_fin_bot_flat_z ]); + } + } + } + mirror([0,0,1]) translate([0,0,-1]) + cylinder(r= leg_hole_dia/2, + h= (!TEST ? leg_height+2 : leg_height/2), + $fn=30); + mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1]) + hull(){ + cylinder(r= (!TEST ? leg_midspc_dia/2 : 0.1), + h= leg_height - leg_top_thick - leg_bot_thick + 0.2, + $fn=30); + if (TEST) + cylinder(r= leg_midspc_dia/2, + h= leg_height - leg_top_thick - leg_bot_thick + + (!TEST ? 0.2 : -leg_midspc_dia/2), + $fn=30); + } + cid_shear = (leg_fin_bot_w - leg_fin_top_w)/2 / + (leg_height -leg_fin_bot_flat_z); + multmatrix([[ 1, 0, 0, leg_midspc_dia/2 ], + [ 0, cid_shear, + 1, -leg_fin_bot_w/2 ], + [ 0, 1, 0, -leg_height + leg_fin_bot_flat_z ], + [ 0, 0, 0, 1 ]]) + Commitid_BestCount([ leg_big_dia/2 - leg_midspc_dia/2, + leg_height - leg_fin_bot_flat_z + - leg_top_thick ]); + if (!TEST) + for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) { + mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1]) + cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20); + } + } +} + +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 + [ c0 + [ 0, 0 ], + c0 + [ sz[0], 0 ], + c0 + [ sz[0], sz[1] ], + c0 + [ 0, sz[1] ] ]; + +function Rectangle_corners2posts(c) = + [ c[0] + thehd_tr, + c[1] + thehd_tl, + c[2] + thehd_bl, + c[3] + thehd_br ]; + +module Rectangle_TileBase(c) { TileBase(c[0], c[2]); } + +function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1]; + +module Tile02(){ ////toplevel + sz = [100,170]; + c0 = tile02_tr + -sz; + c = Rectangle_corners(c0, sz); + posts = Rectangle_corners2posts(c); + rcs = R_CNR(c,0); + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,0)); + RoundEdge(R_EDGE(c,3)); + InterlockEdge(R_EDGE(c,2), 0); + } + InterlockEdge(R_EDGE(c,1), 1); + RoundCornerCut(rcs); + PostHoles(posts); + } + RoundCornerAdd(rcs); +} + +module Tile12(){ ////toplevel + sz = [100,250]; + c0 = tile02_tr + [-sz[0], 0]; + c = Rectangle_corners(c0, sz); + posts = Rectangle_corners2posts(c); + rcs = R_CNR(c,3); + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,2)); + RoundEdge(R_EDGE(c,3)); + } + InterlockEdge(R_EDGE(c,0), 1); + InterlockEdge(R_EDGE(c,1), 1); + RoundCornerCut(rcs); + PostHoles(posts); + } + RoundCornerAdd(rcs); +} + +tile_01_11_cnr = tile01_tr + [-cutout_l_end_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_l_end_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); + PostHoles(posts); + 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_l_end_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)); + } + PostHoles(posts); + 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_CNR(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); + } + PostHoles(posts); + 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 + frontedge_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], + 0.5 * (cnr_posts[0] + cnr_posts[1]), + cnr_posts[2] + [ 0, -rcy ], + cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ], + cnr_posts[3] + [ 0, -cty ] + ]; + rcs = R_CNR(c,1); + rc2 = [c1bis,c2bis,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(); + PostHoles(posts); + RoundCornerCut(rc2); + } + RoundCornerAdd(rcs); + RoundCornerAdd(rc2); +} + +module FitTest_general(c0,sz, dobrace=false, bracexx=0){ + c = Rectangle_corners(c0, sz); + brace = [7,7,9]; + bsz = sz + [bracexx,0,0]; + difference(){ + union(){ + Rectangle_TileBase(c); + if (dobrace) { + translate(concat(c0, [-brace[2] + 0.1])){ + difference(){ + cube(concat(bsz, [brace[2]]) - [5,0,0]); + translate(brace + [0,0, -25]) + cube(concat(bsz, [50]) - brace*2 + [10,0,0]); + } + } + } + RoundEdge(R_EDGE(c,1)); + } + Machine(); + } +} + +module FitTest_PairLink(cut=false){ ////toplevel + cy0=-55; cy1=85; cx=132; + bar = [10,10]; + legrad = 12; + footrad_min = 1; footrad_max = 4; footrad_depth = 5; + strap = [3,5]; + adj_neg_slop = 1.0; + bar_z_slop = 1.75; + + // calculated + straphole_x_max = legrad/sqrt(2) + footrad_max; + dz = cut ? adj_neg_slop : 0; + + translate([cx - bar[0]/2, cy0, dz + bar_z_slop]) + cube([bar[0], cy1-cy0, bar[1] - bar_z_slop]); + + for (endy=[cy0,cy1]) { + $fn=32; + translate([cx,endy,dz]){ + // feet + for (rot=[45:90:315]) rotate(rot) { + translate([legrad,0,0]){ + hull(){ + cylinder(r= footrad_max, h=1); + translate([0,0,-footrad_depth]) + cylinder(r= footrad_min, h=1); + } + if (cut) + translate([0,0,-10]) + cylinder(r= footrad_min + + adj_neg_slop * (footrad_max-footrad_min)/footrad_depth, + h=20); + } + } + // legs + for (rot=[45,135]) rotate(rot) { + hull(){ + for (s=[-1,+1]){ + translate([s*legrad,0,0]) + cylinder(r= footrad_max, h=bar[1]); + } + } + } + // strap holes + if (cut) { + for (rot=[0,180]) rotate(rot) { + translate([ straphole_x_max - strap[0]/2, 0,0 ]) + cube(concat(strap,[20]), center=true); + } + } + } + } +} + +module FitTest_RearCurve(){ ////toplevel + difference(){ + FitTest_general([100,0], [180,100]); + FitTest_PairLink(true); + TestStrapSlots(); + } +} + +module FitTest_FrontCurve(){ ////toplevel + p0 = [100,-80]; + sz = [180,80]; + difference(){ + intersection() { + Tile00(); + translate([0,0,-8]) linear_extrude(height=18) { + translate(p0) square(sz); + translate(teststrapslots_at[3]) + scale(2* [ teststrap_peg[0], teststrap[1] ]) + circle(r=1, $fn=20); + } + } + FitTest_PairLink(true); + TestStrapSlots(); + } +} + +module FitTest_Entire(){ ////toplevel + p0 = [-33,-80]; + szrear = [263,180]; + szfront = [243,szrear[1]]; + difference(){ + FitTest_general(p0, szrear, dobrace=true, bracexx=0); + FitTest_PairLink(true); + translate(concat(p0,[0]) + [szfront[0],-10,-40]) + cube([100, -p0[1], 80]); + TestStrapSlots(); + } + intersection(){ + FitTest_RearCurve(); + translate(concat(p0,[-20])) cube(concat(szrear,[40])); + } + FitTest_FrontCurve(); +} + +module FitTest_EntireDemo(){ ////toplevel + FitTest_Entire(); + //%Tile00(); +} + +module FitTest_EndEnd(){ ////toplevel + p0 = [-30,-32]; + sz = [156,81] - p0; + sz2 = [136,68] - p0; + difference(){ + FitTest_general(p0, sz); + translate([ p0[0] -1, p0[1]+sz2[1], -10]) + cube([ sz2[0] +1, 50, 20 ]); + } +} + +module FitTest_PairDemo(){ ////toplevel + sh=[-90,-15,0]; + translate(sh){ + FitTest_PairLink(); + %FitTest_FrontCurve(); + %FitTest_RearCurve(); + } + rotate([0,0,180]){ + translate(sh){ + difference(){ + union(){ + FitTest_FrontCurve(); + FitTest_RearCurve(); + } + #FitTest_PairLink(true); + } + } + } +} + +module RoundCornerDemo_plat(cnr){ + mirror([0,0,1]) linear_extrude(height=1) polygon(cnr); +} + +module RoundCornerDemo(){ ////toplevel + cnr = [ [-2,-3], [13,-3], [-12,9] ]; + translate([0,25,0]) RoundCornerDemo_plat(cnr); + translate([25,0,0]) RoundCornerAdd(cnr); + translate([-25,0,0]) RoundCornerCut(cnr); + translate([0,-25,0]) RoundCorner_selector(cnr, 0); + difference(){ + RoundCornerDemo_plat(cnr); + RoundCornerCut(cnr); + } + RoundCornerAdd(cnr); +} + +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(); + // Can also do this, to print reference sheet: + // load this into openscad + // select Ctrl-4 view, view all, scale appropriately + // import sewing-table,Demo-flat.png + // pngtopnm t.pnm + // lpr t.pnm +} //TestPiece1(); //TestPiece2(); //Demo(); + +//Machine_NewRearProfile(); +//Machine_NewRearCurve(); +//Machine_NewFrontProfile(); +//Machine_NewEndProfile(); +//Machine_NewEndProfileDemo(); +//Machine_Curves(); +//Machine(); +//FitTest(); +//MachineEnvelope();