X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=sewing-table.scad.m4;h=f44e1e3f383fd27cc553bf1660c9ae9afbc34922;hb=3f025e3989d5cbeafac9a9daa88a4c3e141943d4;hp=3d4597a5e1c811c0037eca5410c6a5743e13d735;hpb=7e15e10885db2dcfff21fd9bbf94e14e91127aba;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 3d4597a..f44e1e3 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -94,7 +94,7 @@ 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; @@ -123,6 +123,8 @@ 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; @@ -190,9 +192,10 @@ 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); } } } @@ -391,7 +394,7 @@ 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); @@ -408,7 +411,7 @@ module Machine_Profile(){ 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]) { @@ -422,7 +425,54 @@ 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_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 ]) { @@ -447,7 +497,7 @@ 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, @@ -471,31 +521,7 @@ module Machine_Curves(){ ////toplevel 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(); } } } @@ -504,7 +530,20 @@ 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 @@ -530,6 +569,39 @@ 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 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 + FitTest_general([110,-80], [170,80]); +} + module Tile02(){ ////toplevel sz = [100,170]; c0 = tile02_tr + -sz; @@ -693,4 +765,9 @@ module Demo(){ ////toplevel //Demo(); //Machine_Profile(); -//Machine_RearProfile(); +//Machine_NewRearProfile(); +//Machine_NewRearCurve(); +//Machine_Curves(); +//Machine(); +//FitTest(); +//MachineEnvelope();