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=b71e04110cc327b69d281f314d33d066402a0221;hp=7f59091d50c25c091516362163b23588858b7c0c;hb=b5d196171acdb4887099393effc16ccd4db69bf7;hpb=ebb99e1e31e40a4439621aabf3d2e7d922afe25b diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 7f59091..b71e041 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -7,12 +7,14 @@ 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; @@ -28,48 +30,43 @@ 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 = 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, ] - ]; +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_slop = 0.25; cutout_l_end_x = 22; cutout_l_end_y = machine_rear_to_front; -cutout_l_end_curve = 1; +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; @@ -77,16 +74,16 @@ 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; +rearedge_len = 170 + 0.70; +frontedge_len = 170; rearcurve_strt_len = 52; -rearcurve_z_slop = 0.75; +rearcurve_z_slop = -0.50; rearcurve_avoid_y = 35; @@ -100,12 +97,24 @@ frontcurve_side_skew = 3.5 / 72; frontcurve_avoid_y = 70; frontcurve_z_slop = 0.75; -frontcurve_strt_len = 60; -frontcurve_dualcurve_angle = 90 - 65; +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; @@ -126,25 +135,30 @@ thehd_tl = [ -thehd_tr[0], thehd_tr[1] ]; thehd_bl = -thehd_tr; thehd_br = -thehd_tl; -tablet_z_slop = rearcurve_z_slop; +tablet_z_slop = 1.00; 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]; +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) { @@ -153,6 +167,24 @@ module Post(){ 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); + } } } @@ -162,6 +194,12 @@ module Posts(posts) { Post(); } } +module PostHoles(posts) { + for (p= posts) { + translate(concat(p, [0])) + PostHole(); + } +} module TileBase(botleft, topright){ size = topright - botleft; @@ -171,7 +209,7 @@ module TileBase(botleft, topright){ mirror([0,0,1]) translate(concat(botleft, [0])) cube(concat(size, [tile_th])); - if (!TEST) { + if (!(TEST || JIG)) { cidsz = topright_post-botleft_post + [-post_dia,-post_dia] + [0, thehd[1]]; @@ -182,16 +220,17 @@ module TileBase(botleft, topright){ + 0.5 * concat( cidsz - cidszr, [ 0 ]) ) Commitid_BestCount_M(cidszr); } - if (TEST) { + 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) ]; - translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) ) - Commitid_BestCount(cidszr); + 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])); + 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])); } @@ -200,6 +239,17 @@ module TileBase(botleft, topright){ 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]); + } + } + } } } } @@ -410,6 +460,7 @@ module TestPiece1(){ ////toplevel } InterlockEdge(corners[1], corners[2], 1, nlobes=1); RoundCornerCut(rcs); + PostHoles(holes); } RoundCornerAdd(rcs); } @@ -419,10 +470,15 @@ module TestPiece2(){ ////toplevel [ 50, 0] ]; corners = TestPiece_holes2corners(holes); - TileBase(corners[0], corners[2]); - Posts(holes); - RoundEdge(corners[0], corners[1]); - InterlockEdge(corners[3], corners[0], 0, nlobes=1); + 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 TestDemo(){ ////toplevel @@ -433,40 +489,29 @@ module TestDemo(){ ////toplevel 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 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]); } } } @@ -504,6 +549,76 @@ module Machine_NewFrontProfile(){ } } +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); @@ -535,24 +650,6 @@ module Machine_NewRearCurve(){ } } -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, @@ -566,7 +663,7 @@ module Machine_Curves(){ ////toplevel reartablet_y+1, 20 ]); } - translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len, + translate([ tile01_tr[0] - cutout_l_end_x + frontedge_len, cutout_tile11_y, frontcurve_z_slop ]){ translate([0, -machine_rear_to_front, 0]) @@ -577,7 +674,10 @@ module Machine_Curves(){ ////toplevel 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 ]){ @@ -586,16 +686,51 @@ module Machine_Curves(){ ////toplevel } } +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_Arm(); + Machine_NewArm(); Machine_Curves(); + if (TEST) + TestStrapSlots(); } module MachineEnvelope(){ // used for testing - p_arm_bl = [-cutout_tile11_x, -cutout_tile01_y]; + p_arm_bl = [-cutout_l_end_x, -cutout_tile01_y]; y_arm_t = cutout_tile11_y; - p_crv_fl = p_arm_bl + [rearedge_len, -frontcurve_avoid_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){ @@ -604,6 +739,65 @@ module MachineEnvelope(){ } } +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 @@ -638,6 +832,7 @@ module Tile02(){ ////toplevel } InterlockEdge(R_EDGE(c,1), 1); RoundCornerCut(rcs); + PostHoles(posts); } RoundCornerAdd(rcs); } @@ -658,11 +853,12 @@ module Tile12(){ ////toplevel 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_tile11_x, 0]; +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]; @@ -673,7 +869,7 @@ module Tile11(){ ////toplevel cnr_posts = Rectangle_corners2posts(c); posts = concat( Posts_interpolate_one(cnr_posts[0], - cnr_posts[1] - [cutout_tile11_x, 0]), + cnr_posts[1] - [cutout_l_end_x, 0]), [ cnr_posts[1] + [0, cutout_tile11_y], cnr_posts[2], cnr_posts[3] @@ -687,6 +883,7 @@ module Tile11(){ ////toplevel } InterlockEdge(c[0], tile_01_11_cnr, 1); InterlockEdge(tile_11_10_cnr, c[2], 1); + PostHoles(posts); Machine(); } } @@ -699,7 +896,7 @@ module Tile01(){ ////toplevel 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], + Posts_interpolate_one(cnr_posts[2] - [cutout_l_end_x, 0], cnr_posts[3]) ); difference(){ @@ -710,6 +907,7 @@ module Tile01(){ ////toplevel InterlockEdge(tile_01_11_cnr, c[3]); InterlockEdge(R_EDGE(c,3)); } + PostHoles(posts); InterlockEdge(c[1], tile_01_00_cnr, 1); Machine(); } @@ -736,6 +934,7 @@ module Tile10(){ ////toplevel RoundEdge(R_EDGE(c,2)); InterlockEdge(c[3], tile_11_10_cnr); } + PostHoles(posts); RoundCornerCut(rcs); Machine(); } @@ -748,7 +947,7 @@ module Tile00(){ ////toplevel 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] ]; + 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) ]; @@ -758,8 +957,9 @@ module Tile00(){ ////toplevel 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] + rearedge_len - cutout_l_end_x, -cty ], + cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ], cnr_posts[3] + [ 0, -cty ] ]; rcs = R_CNR(c,1); @@ -782,24 +982,26 @@ module Tile00(){ ////toplevel RoundEdge(c1bis, c2bis); } Machine(); + PostHoles(posts); RoundCornerCut(rc2); } RoundCornerAdd(rcs); RoundCornerAdd(rc2); } -module FitTest_general(c0,sz, dobrace=false){ +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(sz,[brace[2]]) - [5,0,0]); + cube(concat(bsz, [brace[2]]) - [5,0,0]); translate(brace + [0,0, -25]) - cube(concat(sz, [50]) - brace*2 + [10,0,0]); + cube(concat(bsz, [50]) - brace*2 + [10,0,0]); } } } @@ -809,71 +1011,138 @@ module FitTest_general(c0,sz, dobrace=false){ } } -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 - p0 = [110,-80]; - sz = [170,80]; - intersection() { - Tile00(); - translate([0,0,-8]) linear_extrude(height=18) { - translate(p0) square(sz); - } - } -} - module FitTest_PairLink(cut=false){ ////toplevel - cy0=-55; cy1=85; cx=127; + cy0=-55; cy1=85; cx=132; bar = [10,10]; legrad = 12; - footrad_min = 2; footrad_max = 4; footrad_depth = 3; + 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]); - translate([cx - bar[0]/2, cy0, 0]) - cube([bar[0], cy1-cy0, bar[1]]); for (endy=[cy0,cy1]) { $fn=32; - translate([cx,endy,0]){ - 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); - } + 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); } } - for (rot=[45,135]) { - rotate(rot){ - hull(){ - for (s=[-1,+1]){ - translate([s*legrad,0,0]) - cylinder(r= footrad_max, h=bar[1]); - } + // 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 - translate([-120,0,0]){ + 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){ @@ -901,16 +1170,23 @@ module Demo(){ ////toplevel 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_Profile(); //Machine_NewRearProfile(); //Machine_NewRearCurve(); //Machine_NewFrontProfile(); +//Machine_NewEndProfile(); +//Machine_NewEndProfileDemo(); //Machine_Curves(); //Machine(); //FitTest();