air-hockey-puck: wip

[reprap-play.git] / scaffold-clamp-common.scad

diff --git a/scaffold-clamp-common.scad b/scaffold-clamp-common.scad
index 90b194ac77a8d2e3188638e3ca604e8b6741499e..79ed1da0fffa32845344d390ef6ee7d957c45363 100644 (file)
--- a/scaffold-clamp-common.scad
+++ b/scaffold-clamp-common.scad
@@ -38,12 +38,22 @@ cleat_horn_d_max = [12, 14];
 cleat_height = 25;
 cleat_stem_l = 20;
 
+cleat_overlap = (1-cos(60));
+
 // ---------- hhook ----------
 
 hhook_inside = 40;
 hhook_th = 4;
 hhook_l = 40;
 
+// ---------- linear bracket ----------
+
+linear_bracket_h = 50;
+linear_bracket_l = 100;
+linear_bracket_t = 15;
+linear_bracket_hole_offset = 20;
+linear_bracket_hole_dia = 5 + 1.00;
+
 // ========== defaults ==========
 
 pin_head_th = th/2;
@@ -96,7 +106,10 @@ vhook_outer_dia = vhook_inside + vhook_th*2;
 cleat_horn_tl = cleat_horn_l + cleat_stem_l/2;
 
 vcleat_dz = max(0,
-               cleat_horn_tl + cleat_horn_d_min[0]/2 - total_z/2
+               cleat_horn_tl
+               + cleat_horn_d_min[0]/2
+               - cleat_horn_d_min[0]/2 * cleat_overlap
+               - total_z/2
                );
 
 // calculated - hhook
@@ -174,28 +187,36 @@ module MainPlanB(flatten){
   }
 }
 
-module HalfClampX(flatten=false){
-  difference(){
-    translate([0,0, min_z]) {
-      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);
-      }
+module HalfClampXPositive(flatten=false){
+  translate([0,0, min_z]) {
+    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 (j=[0:nbolts-1]) {
-      translate([ bolt_x, 0, min_z + (j + 0.5) * bolt_stride ]) {
-       translate([0, -tube_dia/2, 0])
-         rotate([-90,0,0])
-         cylinder(r= bolt_hole_r, h= tube_dia);
-       translate([0, -flats_y, 0])
-         rotate([90,0,0])
-         cylinder(r= bolt_flat/2, h= tube_dia/2);
-      }
+  }
+}
+
+module HalfClampXNegative(){
+  for (j=[0:nbolts-1]) {
+    translate([ bolt_x, 0, min_z + (j + 0.5) * bolt_stride ]) {
+      translate([0, -tube_dia/2, 0])
+       rotate([-90,0,0])
+       cylinder(r= bolt_hole_r, h= tube_dia);
+      translate([0, -flats_y, 0])
+       rotate([90,0,0])
+       cylinder(r= bolt_flat/2, h= tube_dia/2);
     }
   }
 }
 
+module HalfClampX(flatten=false){
+  difference(){
+    HalfClampXPositive(flatten);
+    HalfClampXNegative();
+  }
+}
+
 // ---------- vhook ----------
 
 module VHookProfile() {
@@ -307,21 +328,27 @@ module CleatBase(){
 }
 
 module VCleat(){
-  translate([0,0, vcleat_dz]){
-    difference(){
-      translate([0, -(main_r + cleat_height), 0]) {
-       rotate([0, -90, 90]) {
-         CleatBase();
-         for (m=[0,1]) {
-           mirror([m,0,0]) {
-             CleatHorn();
+  intersection(){
+    translate([0,0, vcleat_dz]){
+      difference(){
+       translate([0, -(main_r + cleat_height), 0]) {
+         rotate([0, -90, 90]) {
+           CleatBase();
+           for (m=[0,1]) {
+             mirror([m,0,0]) {
+               CleatHorn();
+             }
            }
          }
        }
+       linextr(-cleat_stem_l, +cleat_stem_l)
+         circle(r = tube_dia/2 + 0.1);
       }
-      linextr(-cleat_stem_l, +cleat_stem_l)
-       circle(r = tube_dia/2 + 0.1);
     }
+      translate([0,0, total_z * 0.5])
+       cube(center=true,
+            (main_r + cleat_stem_l)*4 * [1,1,0] +
+            total_z * [0,0,2]);
   }
 }
 
@@ -362,6 +389,34 @@ module HHookPlanDemo(){
   HHookHookPlan();
 }
 
+// ---------- linear bracket ----------
+
+module LinearBracketA(){ ////toplevel
+  difference(){
+    union(){
+      HalfClampXPositive();
+      mirror([1,0,0])
+      linextr_y_xz(-open_gap/2 - linear_bracket_t, -open_gap/2)
+       rectfromto([0, min_z],
+                  [max_x + linear_bracket_l, min_z + linear_bracket_h]);
+    }
+    HalfClampXNegative();
+    linextr(-1000,1000)
+      TubePlan();
+    mirror([1,0,0])
+      linextr_y_xz(-100,100) {
+      for (t = [
+               [1,1] * linear_bracket_hole_offset,
+               -[1,1] * linear_bracket_hole_offset +
+               [linear_bracket_l, linear_bracket_h]
+               ]) {
+       translate([ max_x, min_z ] + t)
+         circle(r= linear_bracket_hole_dia/2);
+      }
+    }
+  }
+}
+
 // ---------- misc ----------
 
 module PinSitu(){ ////toplevel
@@ -423,5 +478,12 @@ module Demo(){ ////toplevel
     rotate([0,0,180]) PinSitu();
 }
 
+module DemoPair(){ ////toplevel
+  color("red") rotate([180,0,0]) DemoA();
+  color("blue") DemoA();
+  color("orange") translate([hinge_x, 0, min_z - hinge_z_gap])
+    rotate([0,0,180]) PinSitu();
+}
+
 //PlanDemo();
 //HalfClamp();