sm_closure_cnr = 3.0;
-catch_stalk_h = 3;
+catch_stalk_h = 4.5;
catch_stalk_len = 50;
+catch_tip_th = 4;
catch_head_th = 3;
catch_pin_slop = 0.25; // each side, and above
catch_stalk_above_gap = 1.5;
catch_stalk_eff_bend_rad = catch_stalk_len * 0.75;
+catch_strap_width = 12;
catch_stalk_base_width = 15;
catch_knob_dia = 6;
-catch_knob_above_gap = 8;
-catch_knob_height = 6;
+catch_knob_above_gap = 5;
+catch_knob_height = 3.0;
catch_stalk_below_gap = 1.0;
catch_stalk_beside_gap = 2.0;
+ sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
catch_cr = catch_knob_dia/2 + catch_stalk_beside_gap;
-catch_strap_width = sm_main_width;
catch_strap_thick = sm_main_thick;
echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad);
// CATCH
-//cppy6 = -catch_strap_width * 2/3;
-
cppxC = 0.41 * sm_inner_rad * TAU;
// catch pin
cppd = [ bayo_n[0]
- catch_pin_slop - catch_pin_slop_x_extra,
-catch_stalk_above_gap ];
+cppi = [ cppa[0], cppd[1] ];
cppc = [ cppd[0], cppb[1] ];
cpph = cppd + [0,-1] * catch_stalk_h;
cppe = cppd + [0,-1] * (catch_knob_above_gap + catch_knob_dia/2);
// catch assembly stalk and so on
+catch_cr3 = catch_cr + catch_stalk_h;
+
cppF = [ cppg[0] - catch_stalk_eff_bend_rad, cppd[1] ];
cpp4 = [ cppg[0] - catch_stalk_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 ];
+cpp3 = [ cpp2[0] + catch_cr + catch_cr3, cppd[1] - catch_cr3 ];
cppA = [ -cppxC, cpp9[1] ];
cppE = [ cppA[0], cppD[1] ];
ImplHeadCup();
}
-module SomeStrap(){
+module SomeStrap(width){
// children(0) is to add, (1) subtract
difference(){
union(){
- cylinder(r=sm_outer_rad, h=sm_main_width);
+ cylinder(r=sm_outer_rad, h=width);
StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr,
smc_max_y,
- sm_closure_cnr);
+ sm_closure_cnr,
+ width);
children(0);
}
translate([0,0,-1])
- cylinder(r=sm_inner_rad, h=sm_main_width+2);
+ cylinder(r=sm_inner_rad, h=width+2);
translate(smc_pos)
- StrapMountBolt(10);
+ StrapMountBolt(10, width);
translate(smc_pos)
cube([ sm_bolt_tighten_allow, 40,100 ], center=true);
children(1);
}
}
-module StrapMountBolt(l_delta){ ///toplevel
+module StrapMountBolt(l_delta, strap_width){ ///toplevel
// positioned relative to smc_pos
translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2,
smc_bolt_y,
- sm_main_width/2]){
+ strap_width/2]){
translate([ -sm_bolt_shaft/2-1, 0,0 ]){
rotate([0,90,0]) cylinder(r= sm_bolt_dia/2, h= sm_bolt_shaft+2);
}
}
}
-module StrapMountProtrusion(half_x, max_y, cnr){
+module StrapMountProtrusion(half_x, max_y, cnr, width){
translate(smc_pos){
- linear_extrude(height=sm_main_width, convexity=10){
+ linear_extrude(height=width, convexity=10){
hull(){
for (m = [0,1]) mirror([m,0,0]) {
translate([-(half_x - cnr), max_y - cnr])
}
module StrapMount(){ ////toplevel
- SomeStrap(){
+ SomeStrap(sm_main_width){
rotate([0,0,180]){
StrapMountProtrusion(strap_hoop_inside/2 + strap_hoop_thick,
strap_hoop_thick,
difference(){
union(){
hull(){
- translate(cpp3) circle(r= catch_cr);
+ translate(cpp3) circle(r= catch_cr3);
polygon([ cpp3,
cpp2r,
cpp5,
}
translate(cpp2) circle(r= catch_cr);
}
+ // if cpp11 is above cpp10, the subtracted hull above
+ // can go down too far. Ensure we do not cut off below cppy6.
+ polygon([ cppE,
+ cppD,
+ cpp9,
+ [ cpp9[0], cppy6 ],
+ [ cpp7[0] - catch_cr, cppy6 ],
+ cpp2d
+ ]);
}
-module CatchHeadProfile(){
+module CatchTipProfile(dy){
+ ddy = [0,dy];
intersection(){
translate(cppF){
difference(){
}
}
polygon([ cppa,
- cppg,
- cpph,
- cppd,
+ cppi + ddy,
+ cppd + ddy,
cppc,
cppb ]);
}
+}
+
+module CatchHeadProfile(){
polygon([ cppd,
- cppg,
+ cppd,
+ cppi,
cppf,
cppe,
cpph ]);
linear_extrude(height=catch_strap_thick, convexity=10)
CatchAssemblyCoreProfile();
+ hull(){
+ linear_extrude(height=catch_head_th, convexity=10)
+ CatchTipProfile(0);
+ linear_extrude(height=catch_tip_th, convexity=10)
+ CatchTipProfile(catch_tip_th - catch_head_th);
+ }
+
linear_extrude(height=catch_head_th, convexity=10)
CatchHeadProfile();
translate(concat(cppB,[0])) hull(){
- translate([0,0, catch_knob_height - catch_knob_dia/2])
+ translate([0,0, catch_knob_height + catch_head_th - catch_knob_dia/2])
sphere(r = catch_knob_dia/2);
cylinder(r = catch_knob_dia/2, h = 0.1);
}
".stl"),
convexity=20);
- SomeStrap(){
+ SomeStrap(catch_strap_width){
union(){ }
union(){
translate([-200, -200, -200])