X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=sewing-table.scad.m4;h=8b69b445499503991010b0295de2ce8ca08be2c4;hb=f5b8036d8023025c07f267bdb6984f4cc9efe127;hp=5a6aec036ea8e4c6841387de5f815e4e600e37e6;hpb=d966533a620dcfd35e9aebd199212fcbba6ba83c;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 5a6aec0..8b69b44 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 +28,19 @@ interlock_fine_lenslop = 1.0; demo_slop = 0.1; +// cutout + +cutout_l_end_y = 85; +cutout_l_end_curve = 1; + +cutout_tile01_y = 170 - 147; +cutout_tile11_x = 22 + cutout_l_end_curve; +cutout_tile11_y = cutout_l_end_curve - 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 +74,13 @@ 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 +99,23 @@ 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])); + } + } } } @@ -119,12 +151,36 @@ 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]); + } } } } @@ -160,7 +216,7 @@ module InterlockEdgePlan(negative, nlobes, length, dosquare=true) { if (dosquare) { iadj = 0; - slotshorter = negative ? 0 : interlock_fine_lenslop; + slotshorter = negative ? -0.1 : interlock_fine_lenslop; mirror([0, negative]) translate([slotshorter, iadj]) square([length - slotshorter*2, interlock_fine + iadj*2]); @@ -213,14 +269,18 @@ module TestPiece1(){ ////toplevel [ 0, 0] ]; corners = TestPiece_holes2corners(holes); + rcs = [corners[0], corners[1]]; 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(rcs); } - Posts(holes); - RoundEdge(corners[0], corners[1]); - RoundEdge(corners[3], corners[0]); - RoundLeftCorner(corners[0], corners[1]); + RoundCornerAdd(rcs); } module TestPiece2(){ ////toplevel @@ -243,6 +303,8 @@ module TestDemo(){ ////toplevel } 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] ], @@ -254,20 +316,33 @@ function Rectangle_corners2posts(c) = c[2] + thehd_bl, c[3] + thehd_br ]; +module Rectangle_TileBase(c) { TileBase(c[0], c[2]); } + +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(){ - TileBase(c[0], c[2]); - InterlockEdge(c[1], c[2], 1); + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,0)); + RoundEdge(R_EDGE(c,3)); + InterlockEdge(R_EDGE(c,2), 0); + } + InterlockEdge(R_EDGE(c,1), 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); + RoundCornerAdd(rcs); } module Tile12(){ ////toplevel @@ -275,14 +350,19 @@ module Tile12(){ ////toplevel c0 = [-sz[0], 0]; c = Rectangle_corners(c0, sz); posts = Rectangle_corners2posts(c); + rcs = [R_EDGE(c,3)]; difference(){ - TileBase(c[0], c[2]); - InterlockEdge(c[0], c[1], 1); + union(){ + Rectangle_TileBase(c); + Posts(posts); + RoundEdge(R_EDGE(c,2)); + RoundEdge(R_EDGE(c,3)); + } + InterlockEdge(R_EDGE(c,0), 1); + InterlockEdge(R_EDGE(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