X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=sewing-table.scad.m4;h=dc4e056bf0312da10d02803094436858bcb057ed;hb=0d324b3ae4898ca3bfece00bee629f23db530b1f;hp=045193c98bf7ae2d75cf0e9a95b15d295d897024;hpb=5c8e2f521b6c0a908fe8e03a51f001f5b36496e6;p=reprap-play.git diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4 index 045193c..dc4e056 100644 --- a/sewing-table.scad.m4 +++ b/sewing-table.scad.m4 @@ -100,6 +100,9 @@ frontcurve_side_skew = 3.5 / 72; frontcurve_avoid_y = 70; frontcurve_z_slop = 0.75; +frontcurve_strt_len = 60; +frontcurve_dualcurve_angle = 90 - 65; + // calculated TEST = false; @@ -123,6 +126,8 @@ 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 +195,10 @@ 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); } } } @@ -232,10 +238,11 @@ module RoundEdge(left_cnr, right_cnr) { } module RoundCornerCut(ci) { - // ci should be [this_cnr, right_cnr] + // ci should be [this_cnr, right_cnr, left_cnr] // where right_cnr is to the right (ie, anticlockwise) this_cnr = ci[0]; right_cnr = ci[1]; + left_cnr = ci[2]; offr= round_cnr_rad - round_edge_rad; INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { difference(){ @@ -249,6 +256,7 @@ module RoundCornerCut(ci) { module RoundCornerAdd(ci) { this_cnr = ci[0]; right_cnr = ci[1]; + left_cnr = ci[2]; bigr = round_cnr_rad - round_edge_rad; INREFFRAME(this_cnr, right_cnr) INREFFRAME_EDGE { intersection(){ @@ -391,7 +399,7 @@ 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 +416,7 @@ 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]) { @@ -432,7 +440,7 @@ module Machine_NewRearProfile(){ sh = -[abs(posbox[0]), abs(posbox[1])]; rot = atan2(-sideline[0], sideline[1]); sc = scaleline_mm / scaleline; - echo("SH",sh,rot,sc); + //echo("SH",sh,rot,sc); scale(sc) rotate(rot) translate(sh){ import("sewing-table-rear-profile.dxf", convexity=10); // spline, Pink3 } @@ -440,9 +448,11 @@ module Machine_NewRearProfile(){ module Machine_NewRearCurve(){ slant = atan2(4,210-10); - echo("SL",slant); + //echo("SL",slant); translate([0,0, rearcurve_double_inrad]) rotate([slant,0,0]){ - translate([ rearcurve_double_inrad, 0, 10 ]){ + translate([ rearcurve_double_inrad, + 0, + -rearcurve_double_inrad + 10 ]){ rotate([180,0,0]) rotate([0,0,90]) linear_extrude(height=30){ hull(){ Machine_NewRearProfile(); @@ -492,7 +502,7 @@ 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, @@ -526,6 +536,19 @@ module Machine(){ ////toplevel 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 @@ -551,17 +574,19 @@ 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){ +module FitTest_general(c0,sz, dobrace=false){ c = Rectangle_corners(c0, sz); brace = [7,7,9]; difference(){ union(){ Rectangle_TileBase(c); - 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]); + 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)); @@ -571,17 +596,13 @@ module FitTest_general(c0,sz){ } module FitTest_Entire(){ ////toplevel - FitTest_general([-40,-80], [275,180]); + 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; @@ -706,6 +727,13 @@ module Tile00(){ ////toplevel sz = [250,170]; c0 = tile01_tr + [0,-sz[1]]; c = Rectangle_corners(c0, sz); + + // the edge c[1]..c[2] needs a diagonal chunk, from c1bis to c2bis + c2bis = [ -cutout_l_end_x + rearedge_len + frontcurve_strt_len, c[2][1] ]; + c1bis = [ c[1][0], + c[2][1] - + (c[2][0] - c2bis[0]) * tan(90 - frontcurve_dualcurve_angle) ]; + cnr_posts = Rectangle_corners2posts(c); cty = cutout_tile01_y; rcy = cty + frontcurve_avoid_y; @@ -726,10 +754,24 @@ module Tile00(){ ////toplevel } RoundCornerCut(rcs); Machine(); + translate([0,0,-20]) linear_extrude(height=40) { + polygon([ c1bis, c1bis + [50,0], c2bis + [50,0], c2bis ]); + } } RoundCornerAdd(rcs); } +module FitTest_FrontCurve(){ ////toplevel + p0 = [110,-80]; + sz = [170,80]; + intersection() { + Tile00(); + translate([0,0,-8]) linear_extrude(height=18) { + translate(p0) square(sz); + } + } +} + module Demo(){ ////toplevel translate(demo_slop*[-2,1]) color("blue") Tile12(); translate(demo_slop*[-2,0]) color("red") Tile02(); @@ -750,3 +792,4 @@ module Demo(){ ////toplevel //Machine_Curves(); //Machine(); //FitTest(); +//MachineEnvelope();