pin_gap = 1.5; // around
-smooth_r = 10;
+smooth_r = 15;
bolt_dia = 5 + 0.75;
bolt_flat = 10 + 1;
open_gap = 10;
+hinge_unit = 10;
+hinge_units = 4;
+hinge_z_gap = 1;
+
// calculated
pin_dia = th;
hinge_o_r = 0.5 * hole_dia + th;
hinge_x = -0.5 * tube_dia - hinge_o_r;
-bolt_x = 0.5 * tube_dia + bolt_flat * 0.5;
+bolt_x = 0.5 * tube_dia + th + bolt_flat * 0.5;
max_x = bolt_x + max(0.5 + bolt_dia + th, 0.5 * bolt_flat/2);
flats_y = open_gap/2 + th;
+stride_z = hinge_unit*2 + hinge_z_gap*2;
+total_z = hinge_units * stride_z - hinge_z_gap;
+
+pin_flatten = pin_dia/2 * (1 - cos(45));
+
$fa = 3;
$fs = 0.1;
-module MainPlan() {
+module MainPlan(flatten=false) {
difference(){
offset(r=-smooth_r) offset(delta=smooth_r)
union(){
circle(r = tube_dia/2);
rectfromto([0, -open_gap/2],
[max_x+1, +open_gap/2]);
- translate([hinge_x, 0]) circle(r= hole_dia/2);
+ translate([hinge_x, 0]) {
+ intersection(){
+ circle(r= hole_dia/2);
+ if (flatten)
+ translate([ pin_flatten, 0 ])
+ square(center=true, [hole_dia, hole_dia + 1]);
+ }
+ }
}
}
[max_x+10, -(tube_dia/2+th+10)]);
}
-module MainPlanA(){
+module MainPlanA(flatten){
intersection(){
- MainPlan();
+ MainPlan(flatten);
Portion(0);
}
}
-module MainPlanB(){
+module MainPlanB(flatten){
difference(){
- MainPlan();
+ MainPlan(flatten);
Portion(hinge_gap);
}
}
-module PlanDemo(){
+module HalfClampX(flatten=false){
+ difference(){
+ translate([0,0, -total_z/2]) {
+ linextr(0, total_z) mirror([0,1]) MainPlanB();
+ for (i=[0 : hinge_units-1]) {
+ translate([0,0, stride_z*i])
+ linextr(0, hinge_unit) MainPlanA(flatten);
+ }
+ }
+ for (dz=[-1,+1]) {
+ translate([ bolt_x, 0, dz * total_z/4 ]) {
+ translate([0, -tube_dia/2, 0])
+ rotate([-90,0,0])
+ cylinder(r= bolt_dia/2, h= tube_dia);
+ translate([0, -flats_y, 0])
+ rotate([90,0,0])
+ cylinder(r= bolt_flat/2, h= tube_dia/2);
+ }
+ }
+ }
+}
+
+module HalfClampA() { HalfClampX(false); }
+module HalfClampB() { rotate([180,0,0]) HalfClampX(true); }
+
+module PlanDemo(){ ////toplevel
MainPlan();
translate([0,0,-4]) color("red") Portion(1);
translate([0,0,-2]) color("grey") Portion(0);
// translate([max_x - hinge_x + 20, 0]) color("blue") MainPlanA();
}
-PlanDemo();
+module GeneralB(){ ////toplevel
+ HalfClampX(true);
+}
+
+module DummyB(){ ////toplevel
+ HalfClampX();
+}
+
+module Demo(){ ////toplevel
+ color("red") HalfClampA();
+ color("blue") HalfClampB();
+}
+
+//PlanDemo();
+//HalfClamp();