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=27dd082680525fd4ae18caf791d23f7cc6946222;hp=5ad31f80781b26d527c3cfa80cbbdd4de3c0ca1a;hb=ec1e26513776bab871a5531e5a03abd26e8c0a86;hpb=3106a171bdb3ac9bf9b8125f3d74c5ed092eba78 diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 5ad31f8..27dd082 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -30,38 +30,7 @@ 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, ] - ]; +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; @@ -86,7 +55,7 @@ rearedge_len = 170; rearcurve_strt_len = 52; -rearcurve_z_slop = 0.75; +rearcurve_z_slop = -0.50; rearcurve_avoid_y = 35; @@ -100,8 +69,17 @@ 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]; // calculated @@ -126,15 +104,13 @@ 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 = 0.25; 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 )') @@ -451,28 +427,6 @@ module Machine_Arm(){ } } -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 @@ -535,24 +489,6 @@ 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, @@ -586,9 +522,33 @@ 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 Machine(){ ////toplevel Machine_Arm(); Machine_Curves(); + if (TEST) + TestStrapSlots(); } module MachineEnvelope(){ @@ -788,18 +748,19 @@ module Tile00(){ ////toplevel 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]); } } } @@ -809,39 +770,21 @@ 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 = 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]) - cube([bar[0], cy1-cy0, bar[1]]); + 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; @@ -854,6 +797,11 @@ module FitTest_PairLink(cut=false){ ////toplevel 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 @@ -876,8 +824,68 @@ module FitTest_PairLink(cut=false){ ////toplevel } } +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 = [-32,-32]; + sz = [188,113]; + sz2 = [168,100]; + 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=[-100,-15,0]; + sh=[-90,-15,0]; translate(sh){ FitTest_PairLink(); %FitTest_FrontCurve(); @@ -927,7 +935,6 @@ module Demo(){ ////toplevel //TestPiece2(); //Demo(); -//Machine_Profile(); //Machine_NewRearProfile(); //Machine_NewRearCurve(); //Machine_NewFrontProfile();