X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=sewing-table.scad.m4;h=4281c69035e1d3013810e69fbac13ed17eb57a91;hb=f507a09ec549ab232431498fc3a0e5e2625cb327;hp=ba93622aec8afda2cf3f54ac967703f76245ad30;hpb=4dcb6a646b9955cf74fc36db650629dbb51b4e29;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index ba93622..4281c69 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -18,6 +18,8 @@ screw_big_len = 4.0; round_edge_rad = 2.0; +round_cnr_rad = 10; + interlock_dia = 10; interlock_fine = 0.66; @@ -26,8 +28,26 @@ interlock_fine_lenslop = 1.0; demo_slop = 0.1; +// cutout + +cutout_l_end_y_front_slop = 0.5; +cutout_l_end_y_rear_slop = 0.5; + +cutout_l_end_y = 85; +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]; + +cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop; +cutout_tile11_x = 22 + cutout_l_end_curve; +cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y; + // calculated +TEST = false; + ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2; echo(str("HOLES IN PLY ctr dist from PLY edge = ", ply_edge_hole_dist)); @@ -61,6 +81,13 @@ module Post(){ cylinder(r= screw_dia/2, h= ply_th, $fn=20); } } + 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); + } + } } } @@ -79,11 +106,27 @@ module TileBase(botleft, topright){ mirror([0,0,1]) translate(concat(botleft, [0])) cube(concat(size, [tile_th])); - 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]]); + if (!TEST) { + 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]]); + } + if (TEST) { + translate( concat(botleft + [thehd[0], 0], [0]) ) + Commitid_BestCount([ size[0] - thehd[0]*2, thehd[1] ]); + difference(){ + mirror([0,0,1]) { + translate(concat(botleft + [test_edge,test_edge], [test_tile_th])) + cube(concat(size - [test_edge,test_edge]*2, [tile_th])); + translate(concat(botleft_post, [-1])) + cube(concat(topright_post-botleft_post, [tile_th+2])); + } +// minkowski(){ +// / + } + } } } @@ -119,12 +162,36 @@ module RoundEdge(left_cnr, right_cnr) { } } -module RoundLeftCorner(this_cnr, right_cnr) { +module RoundCornerCut(ci) { + // ci should be [this_cnr, right_cnr] + // where right_cnr is to the right (ie, anticlockwise) + this_cnr = ci[0]; + right_cnr = ci[1]; + offr= round_cnr_rad - round_edge_rad; INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { difference(){ - sphere(r= round_edge_rad, $fn=60); - translate([0,0, -20]) - cube([20,20,20]); + cube(offr*2 - 0.1, center=true); + translate([offr, offr, 0]) + cylinder(center=true, h=20, r= offr); + } + } +} + +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]) + rotate_extrude(convexity=10, $fn=50) + translate([bigr, 0]) + difference(){ + circle(r= round_edge_rad, $fn=50); + mirror([1,1]) + square([20,20]); + } } } } @@ -213,16 +280,18 @@ module TestPiece1(){ ////toplevel [ 0, 0] ]; corners = TestPiece_holes2corners(holes); + rcs = [corners[0], corners[1]]; difference(){ union(){ TileBase(corners[0], corners[2]); Posts(holes); RoundEdge(corners[0], corners[1]); RoundEdge(corners[3], corners[0]); - RoundLeftCorner(corners[0], corners[1]); } InterlockEdge(corners[1], corners[2], 1, nlobes=1); + RoundCornerCut(rcs); } + RoundCornerAdd(rcs); } module TestPiece2(){ ////toplevel @@ -243,8 +312,30 @@ module TestDemo(){ ////toplevel translate([ +thehd[0] + demo_slop, 0 ]) TestPiece2(); } + +module Machine_Arm(){ + ysz = cutout_l_end_y_total; + // assume the round end is arc of a circle + //rad = + + translate([0,0,-30]) linear_extrude(height=60) { + translate(tile01_tr + [0, (-cutout_tile01_y + cutout_tile11_y)/2]) { + intersection(){ + translate([-100, -ysz/2]) + square([400, ysz]); + + } + } + } +} + +module Machine(){ + Machine_Arm(); +} 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 [ c0 + [ 0, 0 ], c0 + [ sz[0], 0 ], c0 + [ sz[0], sz[1] ], @@ -256,22 +347,35 @@ function Rectangle_corners2posts(c) = c[2] + thehd_bl, c[3] + thehd_br ]; +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 = -sz; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); + rcs = [R_EDGE(c,0)]; difference(){ union(){ - TileBase(c[0], c[2]); + Rectangle_TileBase(c); Posts(posts); - RoundEdge(c[0], c[1]); - RoundEdge(c[3], c[0]); - RoundLeftCorner(c[0], c[1]); - InterlockEdge(c[2], c[3], 0); + RoundEdge(R_EDGE(c,0)); + RoundEdge(R_EDGE(c,3)); + InterlockEdge(R_EDGE(c,2), 0); } - InterlockEdge(c[1], c[2], 1); + InterlockEdge(R_EDGE(c,1), 1); + RoundCornerCut(rcs); } + RoundCornerAdd(rcs); } module Tile12(){ ////toplevel @@ -279,21 +383,50 @@ module Tile12(){ ////toplevel c0 = [-sz[0], 0]; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); + rcs = [R_EDGE(c,3)]; difference(){ union(){ - TileBase(c[0], c[2]); - RoundEdge(c[2], c[3]); - RoundEdge(c[3], c[0]); - RoundLeftCorner(c[2], c[3]); + Rectangle_TileBase(c); Posts(posts); + RoundEdge(R_EDGE(c,2)); + RoundEdge(R_EDGE(c,3)); } - InterlockEdge(c[0], c[1], 1); + InterlockEdge(R_EDGE(c,0), 1); + InterlockEdge(R_EDGE(c,1), 1); + RoundCornerCut(rcs); } + RoundCornerAdd(rcs); } +module Tile11(){ ////toplevel + sz = [250,250]; + c0 = [0,0]; + c = Rectangle_corners(c0, sz); + cnr_posts = Rectangle_corners2posts(c); + posts = concat( + Posts_interpolate_one(cnr_posts[0], + cnr_posts[1] - [cutout_tile11_x, 0]), + [ cnr_posts[1] + [0, cutout_tile11_y], + cnr_posts[2], + cnr_posts[3] + ]); + difference(){ + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,2)); + InterlockEdge(R_EDGE(c,3)); + } + Machine(); + InterlockEdge(R_EDGE(c,0), 1); + } +} + 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(); + %Machine(); } //TestPiece1();