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=1c0842d734b1c6df0a4134de1fa555723e911c4d;hp=b696ddc47a08bf53be0551e0d470fe40df1f2bd4;hb=4baf337cb792899ca5e68af95418f1ddd0ad1506;hpb=14f86b26435802ec6292652fc167799e1122ec21 diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index b696ddc..1c0842d 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -18,12 +18,20 @@ screw_big_len = 4.0; round_edge_rad = 2.0; +round_cnr_rad = 10; + interlock_dia = 10; +interlock_fine = 0.66; + +interlock_fine_slope = 1.0; +interlock_fine_lenslop = 1.0; demo_slop = 0.1; // 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)); @@ -46,6 +54,8 @@ thehd_br = -thehd_tl; interlock_rad = interlock_dia/2; interlock_negative_rad = interlock_rad + 0.125; +interlock_sq_adj = 0.2; // arbitrary + module Post(){ mirror([0,0,1]) { difference(){ @@ -55,6 +65,13 @@ 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); + } + } } } @@ -73,11 +90,23 @@ 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] ]); + 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])); + } + } } } @@ -113,12 +142,34 @@ module RoundEdge(left_cnr, right_cnr) { } } -module RoundLeftCorner(this_cnr, right_cnr) { +module RoundCornerCut(ci) { + 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]); + } } } } @@ -144,25 +195,54 @@ module InterlockLobePlan(negative) { } } -module InterlockEdgePlan(negative, nlobes, length) { +module InterlockEdgePlan(negative, nlobes, length, dosquare=true) { for (lobei = [ 0 : nlobes-1 ]) { lobex = (length - thehd[0]*2) * (lobei ? lobei / (nlobes-1) : 0); translate([lobex, 0, 0]) { InterlockLobePlan(negative); } } + + if (dosquare) { + iadj = 0; + slotshorter = negative ? -0.1 : interlock_fine_lenslop; + mirror([0, negative]) + translate([slotshorter, iadj]) + square([length - slotshorter*2, interlock_fine + iadj*2]); + } } module InterlockEdge(left_cnr, right_cnr, negative=0, nlobes=2) { plusth = negative * 1.0; + protr = interlock_fine + interlock_sq_adj; + + z2 = -tile_th/2; + z1 = -tile_th/2 - protr / interlock_fine_slope; + z3 = -tile_th/2 + protr / interlock_fine_slope; + + negsign = negative ? -1 : +1; + yprotr = negsign * protr; INREFFRAME(left_cnr, right_cnr) { - translate([0, 0, plusth]){ - mirror([0,0,1]){ - linear_extrude(height=tile_th+plusth*2, convexity=10){ - InterlockEdgePlan(negative, nlobes, length); - } - } + for (vsect = [ // zs0 zs1 ys0, ys1 + [ -tile_th-plusth, plusth, 0, 0], + [ z1, z2, 0, yprotr], + [ z2, z3, yprotr, 0], + ]) { + zs0 = vsect[0]; + zs1 = vsect[1]; + zsd = zs1-zs0; + ys0 = vsect[2]; + ys1 = vsect[3]; + ysd = ys1-ys0; + sl = ysd/zsd; + m = [ [ 1,0, 0, 0 ], + [ 0,1, -sl, -ys0 + negsign*interlock_sq_adj ], + [ 0,0, 1, zs0 ], + [ 0,0, 0, 1 ] ]; + multmatrix(m) + linear_extrude(height=zsd, convexity=10) + InterlockEdgePlan(negative, nlobes, length, !!ysd); } } } @@ -179,13 +259,16 @@ module TestPiece1(){ ////toplevel ]; corners = TestPiece_holes2corners(holes); difference(){ - TileBase(corners[0], corners[2]); + union(){ + TileBase(corners[0], corners[2]); + Posts(holes); + RoundEdge(corners[0], corners[1]); + RoundEdge(corners[3], corners[0]); + } InterlockEdge(corners[1], corners[2], 1, nlobes=1); + RoundCornerCut(corners[0], corners[1]); } - Posts(holes); - RoundEdge(corners[0], corners[1]); - RoundEdge(corners[3], corners[0]); - RoundLeftCorner(corners[0], corners[1]); + RoundCornerAdd(corners[0], corners[1]); } module TestPiece2(){ ////toplevel @@ -224,14 +307,19 @@ module Tile02(){ ////toplevel c0 = -sz; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); + rcs = [c[0], c[1]]; difference(){ - TileBase(c[0], c[2]); + union(){ + TileBase(c[0], c[2]); + Posts(posts); + RoundEdge(c[0], c[1]); + RoundEdge(c[3], c[0]); + InterlockEdge(c[2], c[3], 0); + } + InterlockEdge(c[1], c[2], 1); + RoundCornerCut(rcs); } - Posts(posts); - RoundEdge(c[0], c[1]); - RoundEdge(c[3], c[0]); - RoundLeftCorner(c[0], c[1]); - InterlockEdge(c[2], c[3], 0, 2); + RoundCornerAdd(rcs); } module Tile12(){ ////toplevel @@ -239,13 +327,18 @@ module Tile12(){ ////toplevel c0 = [-sz[0], 0]; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); + rcs = [c[2], c[3]]; difference(){ - TileBase(c[0], c[2]); + union(){ + TileBase(c[0], c[2]); + RoundEdge(c[2], c[3]); + RoundEdge(c[3], c[0]); + Posts(posts); + } + InterlockEdge(c[0], c[1], 1); + RoundCornerCut(rcs); } - Posts(posts); - RoundEdge(c[2], c[3]); - RoundEdge(c[3], c[0]); - RoundLeftCorner(c[2], c[3]); + RoundCornerAdd(rcs); } module Demo(){ ////toplevel