X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=poster-tube-lid.scad;h=2e11f7949079ddf22289ab82dfc780bf4f0db240;hp=81120a4a74258a76c7528c65894b9dff9d760762;hb=9b3087a6117d4143978dad2af8901be6de9bcd15;hpb=bcd13578f5212e94468ee738eba8095a15e40af6 diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad index 81120a4..2e11f79 100644 --- a/poster-tube-lid.scad +++ b/poster-tube-lid.scad @@ -75,6 +75,19 @@ sm_bolt_y_over = 0.5; sm_closure_cnr = 3.0; +catch_stem_h = 3; +catch_stem_len = 50; +catch_stem_th = 3; + +catch_knob_dia = 6; +catch_knob_above_gap = 8; +catch_pin_height = 7; + +catch_stem_below_gap = 1.0; +catch_stem_beside_gap = 2.0; +catch_pin_gap = 0.5; +catch_hook_slope = 0.15; + // calculated TAU = PI*2; @@ -104,6 +117,9 @@ 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; @@ -125,6 +141,47 @@ smc_max_y = smc_bolt_y + sm_bolt_y_over smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2; +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; + +echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad); + +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] ]; + $fs= coarse ? 2.5 : 0.5; $fa= coarse ? 5 : 1; @@ -236,10 +293,6 @@ module StrapHoop(){ ////toplevel } } -module HandlingProfile(){ -// translate([ -} - module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){ // nom_rad > real_rad rotate([0,0, atan2(offset, nom_rad) ]){ @@ -271,8 +324,8 @@ 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); } @@ -411,6 +464,26 @@ 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, @@ -445,31 +518,131 @@ 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 CatchCoreProfile(){ ////toplevel + hull(){ + translate(cppB) circle(r= catch_knob_dia/2); + polygon([cpp4, + cppB, + cpp3]); + } + translate(cpp8) + circle(catch_cr); + polygon([ + cpp4, + cppB, + cpp3, + cpp2, + cpp1, + cpp12, + ]); difference(){ + polygon([ cpp4, + cpp3, + cpp12, + cppA, + cppE, + cppD, + cppC, + cpp9, + cpp10, + cpp11, + cpp7, + cpp5, + ], convexity=10); + hull(){ + translate(cpp7) circle(r= catch_cr); + polygon([ cpp7, + cpp5, + cpp11 ]); + } + hull(){ + translate(cpp6) circle(catch_cr); + polygon([ cppA, + cpp0, + cpp1 ]); + } + } +} + +module CatchPreDistort(){ /////toplevel + scale(100 / sm_inner_rad) + rotate([90,0,0]) + linear_extrude(height=catch_strap_thick, convexity=10) + CatchCoreProfile(); +} + +module CatchAssembly(){ /////toplevel + rotate([0,0, -0.5 * (cpp1[0] + cpp2[0]) / sm_inner_rad * 360/TAU]) + translate([0,0, catch_strap_width]) + scale(sm_inner_rad / 100) + import(str("poster-tube-lid,CatchPostDistort-fa", + (coarse ? 20 : 1), + ".stl"), + convexity=20); + + SomeStrap(){ + union(){ } 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(); - } + translate([-200, -200, -200]) + cube([400, 200, 400]); } - 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); } } +module CatchDemo(){ /////toplevel + color("blue") translate([0,0, + -catch_strap_width + -cpp0[1] + ]) + CatchAssembly(); + translate([0,0,+side_height + ]) + 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();