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=7c95db9682b16029b972a150ad1a2e3e69b6f219;hp=5a5ffcd90d49f1546a24549a6d53859a538d62ea;hb=62ab81705a1d49b4b39ed7c5a565e4fd1b9fb787;hpb=46cb4efe6db3903735775d622dafaae4bcf23097 diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 5a5ffcd..7c95db9 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -94,7 +94,14 @@ rearcurve_double_inrad = 26.10 + 8.04; reartablet_z = 2.54; reartablet_x = 5 + 1; -reartablet_y = 5; +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 @@ -119,11 +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(){ @@ -134,10 +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); } } } @@ -159,15 +172,22 @@ 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] ]); + 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])) @@ -175,15 +195,29 @@ module TileBase(botleft, topright){ 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(){ - Machine(); - cube(max(test_edge, tile_hard_edge_hole_dist)*2, center=true); + MachineEnvelope(); + cube(shufflesz, center=true); } } } } } +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); @@ -216,36 +250,68 @@ module RoundEdge(left_cnr, right_cnr) { } } -module RoundCornerCut(ci) { - // ci should be [this_cnr, right_cnr] - // where right_cnr is to the right (ie, anticlockwise) +m4_define(`ROUNDCORNER_VARS',` this_cnr = ci[0]; right_cnr = ci[1]; - offr= round_cnr_rad - round_edge_rad; - INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { - difference(){ - cube(offr*2 - 0.1, center=true); - translate([offr, offr, 0]) - cylinder(center=true, h=20, r= offr); + 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) { - this_cnr = ci[0]; - right_cnr = ci[1]; - bigr = round_cnr_rad - round_edge_rad; - INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { - intersection(){ - cube(bigr*2 + 0.1, center=true); - translate([bigr, bigr, 0]) + ROUNDCORNER_VARS; + intersection(){ + RoundCorner_selector(ci, +0.1); + INREFFRAME_EDGE { + translate(ctr3){ rotate_extrude(convexity=10, $fn=50) - translate([bigr, 0]) - difference(){ + translate([bigr, 0]) + difference(){ circle(r= round_edge_rad, $fn=50); mirror([1,1]) square([20,20]); - } + } + } } } } @@ -334,7 +400,7 @@ module TestPiece1(){ ////toplevel [ 0, 0] ]; corners = TestPiece_holes2corners(holes); - rcs = [corners[0], corners[1]]; + rcs = R_CNR(corners,0); difference(){ union(){ TileBase(corners[0], corners[2]); @@ -376,7 +442,7 @@ module Machine_Arm(){ translate([0,0,-30]) linear_extrude(height=60) { translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) { intersection(){ - translate([-100, -ysz/2]) + 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); @@ -387,14 +453,13 @@ module Machine_Arm(){ module Machine_Profile(){ first_rear = machine_rear_profile[0]; - first_front = machine_front_profile[len(machine_front_profile)-1]; 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); + //echo(below_point, pol, skew_angle); hull(){ for (z=[0,-40]) { translate([0,z]) { @@ -408,7 +473,69 @@ module Machine_Profile(){ } } -module Machine_RearProfile(){ +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_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 ]) { @@ -417,6 +544,15 @@ module Machine_RearProfile(){ } } +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, @@ -424,7 +560,7 @@ module Machine_Curves(){ ////toplevel //%cube([20,20,20]); translate([ -reartablet_x, -1, - -reartablet_z]) + -reartablet_z + tablet_z_slop]) mirror([0,0,1]) cube([ reartablet_x+1, reartablet_y+1, @@ -432,35 +568,20 @@ module Machine_Curves(){ ////toplevel } translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len, cutout_tile11_y, - 0 ]){ + 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([ rearcurve_strt_len, 0, rearcurve_z_slop ]){ - translate([ 1, - 0, - 0 - ]){ - rotate([0,-90,0])rotate([0,0,-90]){ - linear_extrude(height= rearcurve_strt_len + 1) - Machine_RearProfile(); - } - } - translate([ 0, - 0, - rearcurve_double_inrad ]) { - intersection(){ - rotate([90,0,0]){ - rotate_extrude(convexity=10, $fn=32) { - rotate([0,0,90]) translate([ 0, - -rearcurve_double_inrad ]) { - Machine_RearProfile(); - } - } - } - mirror([0,0,1]) - translate([0,-75,0]) cube([150,150,150]); - } - } + Machine_NewRearCurve(); } } } @@ -469,7 +590,20 @@ 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 @@ -488,19 +622,12 @@ 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 -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 Tile02(){ ////toplevel sz = [100,170]; c0 = tile02_tr + -sz; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); - rcs = [R_EDGE(c,0)]; + rcs = R_CNR(c,0); difference(){ union(){ Rectangle_TileBase(c); @@ -520,7 +647,7 @@ module Tile12(){ ////toplevel c0 = tile02_tr + [-sz[0], 0]; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); - rcs = [R_EDGE(c,3)]; + rcs = R_CNR(c,3); difference(){ union(){ Rectangle_TileBase(c); @@ -537,10 +664,11 @@ module Tile12(){ ////toplevel 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 = tile02_tr + [0,0]; + c0 = tile01_tr + [-sz[0],0]; c = Rectangle_corners(c0, sz); cnr_posts = Rectangle_corners2posts(c); posts = concat( @@ -563,11 +691,9 @@ module Tile11(){ ////toplevel } } -tile_01_00_cnr = tile01_tr + [0, -cutout_tile01_y]; - module Tile01(){ ////toplevel sz = [250,170]; - c0 = tile02_tr + [0,-sz[1]]; + c0 = tile01_tr + -sz; c = Rectangle_corners(c0, sz); cnr_posts = Rectangle_corners2posts(c); posts = concat( @@ -591,17 +717,17 @@ module Tile01(){ ////toplevel module Tile10(){ ////toplevel sz = [250,250]; - c0 = tile02_tr + [sz[0],0]; + 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[1] + rearedge_len - cutout_l_end_x, 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)]; + rcs = R_CNR(c,2); difference(){ union(){ Rectangle_TileBase(c); @@ -616,12 +742,158 @@ module Tile10(){ ////toplevel 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_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(); + RoundCornerCut(rc2); + } + RoundCornerAdd(rcs); + RoundCornerAdd(rc2); +} + +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 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; + bar = [10,10]; + legrad = 12; + footrad_min = 4; footrad_max = 6; footrad_depth = 3; + + 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=[45,135]) { + rotate(rot){ + hull(){ + for (s=[-1,+1]){ + translate([s*legrad,0,0]) + cylinder(r= footrad_max, h=bar[1]); + } + } + } + } + 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); + } + } + } + } + } + } +} + +module FitTest_PairDemo(){ ////toplevel + FitTest_PairLink(); + %FitTest_FrontCurve(); + %FitTest_RearCurve(); +} + +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(); } @@ -630,4 +902,10 @@ module Demo(){ ////toplevel //Demo(); //Machine_Profile(); -//Machine_RearProfile(); +//Machine_NewRearProfile(); +//Machine_NewRearCurve(); +//Machine_NewFrontProfile(); +//Machine_Curves(); +//Machine(); +//FitTest(); +//MachineEnvelope();