X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=sewing-table.scad.m4;h=ec12e1a9ea9127cdc9206054abcc86292acdfe1e;hb=efb3b1c8102d52f2f586170476a5af3e80bc1897;hp=64f144bce908fa5eec60b873cf500b54d725f599;hpb=5b33e45e8c23d67db4cb43a9ecb4ca8a7d368523;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 64f144b..ec12e1a 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; cutout_l_end_y_front_slop = 0.5; cutout_l_end_y_rear_slop = 0.5; @@ -100,8 +69,8 @@ frontcurve_side_skew = 3.5 / 72; frontcurve_avoid_y = 70; frontcurve_z_slop = 0.75; -frontcurve_strt_len = 60; -frontcurve_dualcurve_angle = 90 - 65; +frontcurve_strt_len = 50; +frontcurve_dualcurve_angle = 30; // calculated @@ -133,8 +102,6 @@ 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 +418,6 @@ 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 @@ -489,6 +434,21 @@ module Machine_NewRearProfile(){ } } +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_NewRearCurve(){ slant = atan2(4,210-10); //echo("SL",slant); @@ -520,24 +480,6 @@ 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, @@ -554,18 +496,15 @@ module Machine_Curves(){ ////toplevel translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len, cutout_tile11_y, frontcurve_z_slop ]){ - translate([ 0, -first_front[0] , 0 ]) + 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]]) - translate([ 0, first_front[0] , 0 ]) - mirror([1,0,0]){ - rotate([0,-90,0])rotate([0,0,-90]){ - linear_extrude(height= 200) - Machine_FrontProfile(); - } - } + mirror([1,0,0]) rotate([0,-90,0])rotate([0,0,-90]) + linear_extrude(height= 200) + Machine_NewFrontProfile(); + translate([ rearcurve_strt_len, 0, rearcurve_z_slop ]){ @@ -610,35 +549,6 @@ module Rectangle_TileBase(c) { TileBase(c[0], c[2]); } function Posts_interpolate_one(c0,c1) = [c0, (c0+c1)/2, c1]; -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 = tile02_tr + -sz; @@ -805,13 +715,140 @@ module Tile00(){ ////toplevel 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=127; + 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); + } + 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([110,0], [170,100]); + FitTest_PairLink(true); + } +} + module FitTest_FrontCurve(){ ////toplevel p0 = [110,-80]; sz = [170,80]; - intersection() { - Tile00(); - translate([0,0,-8]) linear_extrude(height=18) { - translate(p0) square(sz); + difference(){ + intersection() { + Tile00(); + translate([0,0,-8]) linear_extrude(height=18) { + translate(p0) square(sz); + } + } + FitTest_PairLink(true); + } +} + +module FitTest_Entire(){ ////toplevel + p0 = [-40,-80]; + szrear = [270,180]; + szfront = [250,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]); + } + intersection(){ + FitTest_RearCurve(); + translate(concat(p0,[-20])) cube(concat(szrear,[40])); + } + FitTest_FrontCurve(); +} + +module FitTest_EntireDemo(){ ////toplevel + FitTest_Entire(); + //%Tile00(); +} + +module FitTest_PairDemo(){ ////toplevel + sh=[-100,-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); + } } } } @@ -847,9 +884,9 @@ module Demo(){ ////toplevel //TestPiece2(); //Demo(); -//Machine_Profile(); //Machine_NewRearProfile(); //Machine_NewRearCurve(); +//Machine_NewFrontProfile(); //Machine_Curves(); //Machine(); //FitTest();