X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=poster-tube-lid.scad;h=641b05d002c9572a6b6287690047ff61fec934a8;hb=79a2e887e347467d6ede6ec19b533c683d3539a6;hp=8bc48535b7050db6333aeb5a317def89684d271a;hpb=e3e8359793b0ba245737f3bddb89223df7147612;p=reprap-play.git diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad index 8bc4853..641b05d 100644 --- a/poster-tube-lid.scad +++ b/poster-tube-lid.scad @@ -1,5 +1,7 @@ // -*- C -*- +include + coarse = false; main_dia = 71.2 + 0.50 - 2.26; @@ -79,13 +81,21 @@ catch_stem_h = 3; catch_stem_len = 50; catch_stem_th = 3; +catch_pin_slop = 0.25; // each side, and above +catch_pin_slop_x_extra = 0.25; // only on one side +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; catch_pin_gap = 0.5; +catch_hook_slope = 0.15; // calculated @@ -116,6 +126,9 @@ middle_bot_z = top_z - top_thick_middle; bayo_entry = bayo_behind / 3.0; bayo_top_z = bayo_behind + bayo_gap; +bayo_nom_rad = main_dia/2 + side_thick; +bayo_real_rad = main_dia/2 + rivet_tall; + rivet_entry_width = rivet_width + side_rivet_gap; jig_mark_rad = jig_mark + main_dia/2 + jig_thick; @@ -139,31 +152,12 @@ smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr 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 * sm_inner_rad / bayo_nom_rad) + - catch_pin_gap; -cpp0 = [0,0]; -cpp1 = cpp0 + [0,1] * catch_pin_height; -cpp2 = cpp1 + [1,0] * (rivet_entry_width - catch_pin_gap); -cpp4 = cpp0 + [0,-1] * catch_stem_end_h; -cpp3 = [ cpp2[0], cpp4[1] ]; -cpp5 = [ cpp0[0] - catch_stem_len, - 0 - (catch_stem_h + catch_cr) ]; -cppB = [ 0.5*(cpp1 + cpp2)[0], - cpp1[1] - catch_pin_height - catch_knob_above_gap - - 0.5 * catch_knob_dia ]; -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; -cpp6 = cpp5; -cpp10 = [ cpp11[0], 0 - catch_cr ]; -cpp8 = cpp10 + [1,0] * catch_cr; -cpp9 = cpp8 + [0,1] * catch_cr; -cppC = cpp8 + [1,1] * catch_cr; -cppA = [ cpp5[0] - catch_cr*2, 0 ]; -cppD = cppC + [0,-1] * catch_strap_width; -cppE = [ cppA[0], cppD[1] ]; +echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad); $fs= coarse ? 2.5 : 0.5; $fa= coarse ? 5 : 1; @@ -208,6 +202,61 @@ bayo_polygon = [ bayo_a, echo(bayo_polygon); +// CATCH + +//cppy6 = -catch_strap_width * 2/3; + +cppxC = 0.41 * sm_inner_rad * TAU; + +// catch pin + +cpp_adj = (bayo_n[0] - bayo_f[0]) * (1 - sm_inner_rad / bayo_nom_rad); +// radius scaling due to nom and actual radius difference in +// bayo entry construction + +cppa = bayo_f + [1,-1] * catch_pin_slop + [1,0] * cpp_adj; +cppb = bayo_g + [1,-1] * catch_pin_slop + [1,0] * cpp_adj; +cppd = [ bayo_n[0] + - catch_pin_slop - catch_pin_slop_x_extra, + -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); + +echo("RR", sm_inner_rad / bayo_nom_rad); + +// 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_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] ]; + +catch_assembly_dy = -cppy9 + catch_strap_width; + + module MainProfile(){ main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr; difference(){ @@ -307,8 +356,8 @@ module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){ module BayonetCutout(){ RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size, - main_dia/2 + side_thick, - main_dia/2 + rivet_tall) + bayo_nom_rad, + bayo_real_rad) translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0]) polygon(bayo_polygon, convexity=10); } @@ -447,6 +496,26 @@ module ImplHeadCupTest(){ ////toplevel ImplHeadCup(); } +module SomeStrap(){ + // children(0) is to add, (1) subtract + difference(){ + union(){ + cylinder(r=sm_outer_rad, h=sm_main_width); + StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr, + smc_max_y, + sm_closure_cnr); + children(0); + } + translate([0,0,-1]) + cylinder(r=sm_inner_rad, h=sm_main_width+2); + translate(smc_pos) + StrapMountBolt(10); + translate(smc_pos) + cube([ sm_bolt_tighten_allow, 40,100 ], center=true); + children(1); + } +} + module StrapMountBolt(l_delta){ ///toplevel // positioned relative to smc_pos translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2, @@ -481,49 +550,158 @@ module StrapMountProtrusion(half_x, max_y, cnr){ } module StrapMount(){ ////toplevel + SomeStrap(){ + rotate([0,0,180]){ + StrapMountProtrusion(strap_hoop_inside/2 + strap_hoop_thick, + strap_hoop_thick, + sm_closure_cnr); + translate(smc_pos + + [0,0, sm_main_width] + + strap_hoop_thick * [ 0, 0.5, -1.0 ]) + StrapHoop(); + } + union(){ }; + } +} + +module CatchAssemblyCoreProfile(){ difference(){ union(){ - cylinder(r=sm_outer_rad, h=sm_main_width); - StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr, - smc_max_y, - sm_closure_cnr); - rotate([0,0,180]){ - StrapMountProtrusion(strap_hoop_inside/2 + strap_hoop_thick, - strap_hoop_thick, - sm_closure_cnr); - translate(smc_pos + - [0,0, sm_main_width] + - strap_hoop_thick * [ 0, 0.5, -1.0 ]) - StrapHoop(); + 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); } - translate([0,0,-1]) - cylinder(r=sm_inner_rad, h=sm_main_width+2); - translate(smc_pos) - StrapMountBolt(10); - translate(smc_pos) - cube([ sm_bolt_tighten_allow, 40,100 ], center=true); + 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, + ]); + } + translate(cpp2) circle(r= catch_cr); } } -module CatchCoreProfile(){ ////toplevel - difference(){ - polygon([ cpp4, - cpp3, - cpp2, - cpp1, - cpp0, - cppA, - cppE, - cppD, - cppC, - cpp9, - cpp10, - cpp11, - cpp6, - cpp5, - ], convexity=10); +module CatchHeadProfile(){ + intersection(){ + translate(cppF){ + difference(){ + circle(r = dist2d(cppF, cppd)); + //circle(r = dist2d(cppF, cppa)); + } + } + polygon([ cppa, + cppg, + cpph, + cppd, + cppc, + cppb ]); + } + polygon([ cppd, + cppg, + cppf, + cppe, + cpph ]); +} + + +module CatchCore(){ /////toplevel + linear_extrude(height=catch_strap_thick, convexity=10) + CatchAssemblyCoreProfile(); + + linear_extrude(height=catch_strap_thick, convexity=10) + CatchHeadProfile(); + + 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]) + CatchCore(); +} + +module CatchAssembly(){ /////toplevel + rotate([0,0, -(cppe[0] + cppB[0] + catch_pin_slop) / sm_inner_rad * 360/TAU]) + translate([0,0, catch_assembly_dy]) + scale(sm_inner_rad / 100) + import(str("poster-tube-lid,CatchPostDistort-fa", + (coarse ? 20 : 3), + ".stl"), + convexity=20); + + SomeStrap(){ + union(){ } + union(){ + translate([-200, -200, -200]) + cube([400, 200, 400]); + } + } +} + +module CatchDemo(){ /////toplevel + color("blue") translate([0,0, + -catch_assembly_dy + ]) + CatchAssembly(); + translate([0,0,+side_height + ]) + Cover(); +} + +module CatchDemoS(){ /////toplevel + color("blue") translate([0,0, + -catch_assembly_dy + ]) + 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([0,0, + +1, + ]) { + CatchAssemblyCoreProfile(); + CatchHeadProfile(); } + polygon(bayo_polygon, convexity=10); } //ProfilesDemo();