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=472aacf382e756d1fc9d0a4d8fb541f12700a077;hp=4c7d53b7cf2095d125b0095276cdf0f0af7850f8;hb=8d45ee4624d7cf2bcd80cbe724dc3b286ebaa866;hpb=9c71eb1302a72757cf355291b20898336140c98d diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 4c7d53b..472aacf 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -30,21 +30,70 @@ demo_slop = 0.1; // cutout +machine_rear_to_front = 85; + +machine_rear_profile = [ + [ - 0, -0.00 ], + [ - 2, -0.10 ], + [ - 4, -0.25 ], + [ - 6, -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, -2.80, ], + [ 120, -2.50, ], + [ 116, -2.00, ], + [ 112, -1.80, ], + [ 108, -1.60, ], + [ 104, -1.30, ], + [ 100, -1.00, ], + [ 96, -0.80, ], + [ 92, -0.70, ], + [ 88, -0.50, ], + [ 84, -0.50, ] + ]; + 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_y = 85; +cutout_l_end_x = 22; +cutout_l_end_y = machine_rear_to_front; cutout_l_end_curve = 1; cutout_l_end_y_total = cutout_l_end_y + cutout_l_end_y_front_slop + cutout_l_end_y_rear_slop; -tile01_tr = [250, 0]; +tile02_tr = [-250, 0]; +tile01_tr = [ 0, 0]; cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop; -cutout_tile11_x = 22 + cutout_l_end_curve; +cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve; cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y; +// rear curve + +rearedge_len = 170; + +rearcurve_rad = 25.4; +rearcurve_strt_len = 65; +rearcurve_total_len = 84; + +rearcurve_rad_slop = 0.75; + +rearcurve_avoid_y = rearcurve_rad + 10; + +reartablet_z = 2.54; +reartablet_x = 5 + 1; +reartablet_y = 5; + // calculated TEST = false; @@ -334,8 +383,74 @@ module Machine_Arm(){ } } -module Machine(){ +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, -40 ]; + 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); + rotate([0,0, -skew_angle ]){ + polygon(pol); + } +} + +module Machine_Rear(){ ////toplevel + big_rad = rearcurve_total_len - rearcurve_strt_len + rearcurve_rad; + small_rad = rearcurve_rad + rearcurve_rad_slop; + translate([ tile01_tr[0] - cutout_l_end_x + rearedge_len, + cutout_tile11_y, + 0 ]){ + //%cube([20,20,20]); + translate([ -reartablet_x, + -1, + -reartablet_z]) + mirror([0,0,1]) + cube([ reartablet_x+1, + reartablet_y+1, + 20 ]); + translate([ rearcurve_strt_len, + 0, + 0 ]){ + translate([ 0, + 0, + -rearcurve_rad + ]){ + rotate([0,-90,0]){ + rotate([0,0, 360/8/2]) + cylinder(r = small_rad, h= rearcurve_strt_len); + } + } + translate([ 0, + 0, + big_rad - rearcurve_rad ]) { + intersection(){ + rotate([90,0,0]){ + rotate_extrude(convexity=10) { + translate([ big_rad, + 0 ]) { + hull(){ + circle(r= small_rad); + translate([200,0]) + circle(r= small_rad); + } + } + } + } + mirror([0,0,1]) + cube([150,150,150]); + } + } + } + } +} + +module Machine(){ ////toplevel Machine_Arm(); + Machine_Rear(); } function Rectangle_corners(c0, sz) = @@ -365,7 +480,7 @@ m4_define(`R_EDGE',`$1[$2],$1[(($2)+1)%4]') module Tile02(){ ////toplevel sz = [100,170]; - c0 = -sz; + c0 = tile02_tr + -sz; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); rcs = [R_EDGE(c,0)]; @@ -385,7 +500,7 @@ module Tile02(){ ////toplevel module Tile12(){ ////toplevel sz = [100,250]; - c0 = [-sz[0], 0]; + c0 = tile02_tr + [-sz[0], 0]; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); rcs = [R_EDGE(c,3)]; @@ -403,12 +518,12 @@ module Tile12(){ ////toplevel RoundCornerAdd(rcs); } -tile_01_11_cnr = [250, 0] + [-cutout_tile11_x, 0]; -tile_11_10_cnr = [250, 0] + [0, cutout_tile11_y]; +tile_01_11_cnr = tile01_tr + [-cutout_tile11_x, 0]; +tile_11_10_cnr = tile01_tr + [0, cutout_tile11_y]; module Tile11(){ ////toplevel sz = [250,250]; - c0 = [0,0]; + c0 = tile02_tr + [0,0]; c = Rectangle_corners(c0, sz); cnr_posts = Rectangle_corners2posts(c); posts = concat( @@ -431,11 +546,11 @@ module Tile11(){ ////toplevel } } -tile_01_00_cnr = [250, 0] + [0, -cutout_tile01_y]; +tile_01_00_cnr = tile01_tr + [0, -cutout_tile01_y]; module Tile01(){ ////toplevel sz = [250,170]; - c0 = [0,-sz[1]]; + c0 = tile02_tr + [0,-sz[1]]; c = Rectangle_corners(c0, sz); cnr_posts = Rectangle_corners2posts(c); posts = concat( @@ -457,14 +572,44 @@ module Tile01(){ ////toplevel } } +module Tile10(){ ////toplevel + sz = [250,250]; + c0 = tile02_tr + [sz[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] + [ 0, rcy ], + cnr_posts[2], + cnr_posts[3] ]; + rcs = [R_EDGE(c,2)]; + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,1)); + RoundEdge(R_EDGE(c,2)); + InterlockEdge(c[3], tile_11_10_cnr); + } + RoundCornerCut(rcs); + Machine(); + } + RoundCornerAdd(rcs); +} + 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(); %Machine(); } //TestPiece1(); //TestPiece2(); //Demo(); + +Machine_Profile();