X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=b2718f22d71692678656d1f286b23d72415d482e;hb=bffae10e351e8aae21fedc413a62e71d1f7808e0;hp=2e8209f0430e9e3ca591dce15c9d05e35c96275f;hpb=a77f9afd05af6862238596327a76aa1beccd036e;p=reprap-play.git diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad index 2e8209f..b2718f2 100644 --- a/poster-tube-lid.scad +++ b/poster-tube-lid.scad @@ -79,9 +79,15 @@ catch_stem_h = 3; catch_stem_len = 50; catch_stem_th = 3; +catch_pin_slop = 0.25; // each side, and above +catch_stalk_above_gap = 1.5; +catch_stalk_eff_bend_rad = catch_stem_len * 0.75; + +catch_stalk_base_width = 15; + catch_knob_dia = 6; catch_knob_above_gap = 8; -catch_pin_height = 7; +catch_knob_height = 6; catch_stem_below_gap = 1.0; catch_stem_beside_gap = 2.0; @@ -145,39 +151,10 @@ catch_cr = catch_knob_dia/2 + catch_stem_beside_gap; catch_strap_width = sm_main_width; catch_strap_thick = sm_main_thick; catch_stem_end_h = catch_stem_h; -catch_pin_width = rivet_entry_width - catch_pin_gap; - -cppy6 = -catch_strap_width/2; -cppxC = 0.34 * sm_inner_rad * TAU; -cppB = [ catch_pin_width/2, - cppy6 - + catch_stem_below_gap - + catch_pin_height - + catch_knob_dia/2 ]; -cpp0 = [ 0, - cppB[1] - + catch_knob_dia - + catch_knob_above_gap ]; -cpp12 = cpp0 + [1,0] * (catch_pin_height * catch_hook_slope); -cpp1 = cpp0 + [0,1] * catch_pin_height; -cpp2 = cpp1 + [1,0] * catch_pin_width; -cpp4 = cpp0 + [0,-1] * catch_stem_end_h; -cpp3 = [ cpp2[0], cpp4[1] ]; -cpp5 = [ cpp0[0] - catch_stem_len, - -catch_stem_h ]; -cpp6 = [ cpp5[0], catch_cr ]; -cpp7 = cppB + [1,-1] * catch_knob_dia/2 - + [ catch_stem_beside_gap, -catch_stem_below_gap ] - + [ 0, -catch_pin_height ] - + [-1,1] * catch_cr; -cpp11 = cpp7 + [1,0] * catch_cr; -cpp10 = [ cpp11[0], 0 - catch_cr ]; -cpp8 = cpp10 + [1,0] * catch_cr; -cpp9 = cpp8 + [0,1] * catch_cr; -cppC = [ cppxC, cpp9[1] ]; -cppA = [ -cppxC, 0 ]; -cppD = cppC + [0,-1] * catch_strap_width; -cppE = [ cppA[0], cppD[1] ]; +catch_pin_width = (rivet_entry_width * sm_inner_rad / bayo_nom_rad) + - catch_pin_gap; + +echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad); $fs= coarse ? 2.5 : 0.5; $fa= coarse ? 5 : 1; @@ -222,6 +199,51 @@ bayo_polygon = [ bayo_a, echo(bayo_polygon); +// CATCH + +//cppy6 = -catch_strap_width * 2/3; + +cppxC = 0.41 * sm_inner_rad * TAU; + +// catch pin + +cppa = bayo_f + [1,-1] * catch_pin_slop; +cppb = bayo_g + [1,-1] * catch_pin_slop; +cppd = [ bayo_n[0] - catch_pin_slop, -catch_stalk_above_gap ]; +cppc = [ cppd[0], cppb[1] ]; +cpph = cppd + [0,-1] * catch_stem_h; +cppe = cppd + [0,-1] * (catch_knob_above_gap + catch_knob_dia/2); +cppf = [ cppa[0], cppe[1] ]; +cppg = [ cppa[0], cpph[1] ]; +cppB = 0.5 * (cppf + cppe); + +// catch assembly depression below pin + +cppy6 = cppB[1] - (catch_knob_dia/2 + + (cppc[1] - cppd[1]) + + catch_stem_below_gap); +cpp7 = [ cppB[0], cppy6 + catch_cr ]; +cpp11 = cpp7 + [1,0] * catch_cr; +cppy9 = cppy6 + catch_strap_width * 1/3; +cpp9 = [ cpp7[0] + catch_cr * 2, cppy9 ]; +cpp8 = cpp9 + [0,-1] * catch_cr; +cpp10 = cpp8 + [-1,0] * catch_cr; +cppC = [ cppxC, cpp9[1] ]; +cppD = cppC + [0,-1] * catch_strap_width; + +// catch assembly stalk and so on + +cppF = [ cppg[0] - catch_stem_stalk_eff_bend_rad, cppd[1] ]; +cpp4 = [ cppg[0] - catch_stem_len, cpph[1] ] + [1,-1] * catch_cr; +cpp5 = [ cpp4[0], cppC[1] + catch_cr ]; +cpp2 = cpp5 + [-1,0] * (catch_cr * 2 + catch_stalk_base_width); +cpp2r = cpp2 + [1,0] * catch_cr; +cpp2d = cpp2 + [0,-1] * catch_cr; +cpp3 = [ cpp2[0] + catch_cr * 2, cppd[1] - catch_cr ]; +cppA = [ -cppxC, cpp9[1] ]; +cppE = [ cppA[0], cppD[1] ]; + + module MainProfile(){ main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr; difference(){ @@ -529,6 +551,45 @@ module StrapMount(){ ////toplevel } } +module CatchAssemblyCoreProfile(){ + difference(){ + union(){ + hull(){ + translate(cpp3) circle(r= catch_cr); + polygon([ cpp3, + cpp2r, + cpp5, + cpph, + cppd + ]); + } + polygon([cppD, + cppC, + cpp9, + cpp10, + cpp11, + cpp4, + cpp2r, + cpp2d, + cppA, + cppE + ]); + translate(cpp8) circle(r= catch_cr); + } + hull(){ + translate(cpp4) circle(r= catch_cr); + translate(cpp5) circle(r= catch_cr); + translate(cpp7) circle(r= catch_cr); + polygon([cpp4, + cppg, + cpph, + cpp10, + cpp11, + ]); + } + } +} + module CatchCoreProfile(){ ////toplevel hull(){ translate(cppB) circle(r= catch_knob_dia/2); @@ -575,11 +636,21 @@ module CatchCoreProfile(){ ////toplevel } } +module CatchCore(){ /////toplevel + linear_extrude(height=catch_strap_thick, convexity=10) + CatchAssemblyCoreProfile(); + + translate(concat(cppB,[0])) hull(){ + translate([0,0, catch_knob_height - catch_knob_dia/2]) + sphere(r = catch_knob_dia/2); + cylinder(r = catch_knob_dia/2, h = 0.1); + } +} + module CatchPreDistort(){ /////toplevel scale(100 / sm_inner_rad) rotate([90,0,0]) - linear_extrude(height=catch_strap_thick, convexity=10) - CatchCoreProfile(); + CatchCore(); } module CatchAssembly(){ /////toplevel @@ -587,7 +658,7 @@ module CatchAssembly(){ /////toplevel translate([0,0, catch_strap_width]) scale(sm_inner_rad / 100) import(str("poster-tube-lid,CatchPostDistort-fa", - (coarse ? 20 : 1), + (coarse ? 20 : 3), ".stl"), convexity=20); @@ -611,6 +682,35 @@ module CatchDemo(){ /////toplevel Cover(); } +module CatchDemoS(){ /////toplevel + color("blue") translate([0,0, + -catch_strap_width + -cpp0[1] + ]) + CatchAssembly(); + intersection(){ + translate([0,0,+side_height + ]) + Cover(); + mirror([0,1,0]) translate([-250,33,0]) cube([500,500,500]); + } + color("black") + translate([0,-33,0]) + cube([6.15, 2,2], center=true); +} + +module CatchPinProfileDemo(){ /////toplevel + echo("G ", + cpp2[0] - cpp1[0], + bayo_n[0] - bayo_e[0]); + color("blue") translate([-cpp2[0], + -cpp2[1], + +1, + ]) + CatchCoreProfile(); + polygon(bayo_polygon, convexity=10); +} + //ProfilesDemo(); //BayonetCutout(); //MainProfile();