X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=scaffold-clamp-common.scad;h=3fee76b0e47af0d25c8b4fefc65865a01f434598;hb=593b000b64faf2c6e5888cff8d91379c16aad171;hp=1354f25ea67242c7b7c3f6b8374a1eb96757ab99;hpb=727af55d0c76dc6a135250a854f7f135880ec1fc;p=reprap-play.git

diff --git a/scaffold-clamp-common.scad b/scaffold-clamp-common.scad
index 1354f25..3fee76b 100644
--- a/scaffold-clamp-common.scad
+++ b/scaffold-clamp-common.scad
@@ -13,6 +13,8 @@ smooth_r = 15;
 bolt_dia = 5 + 0.75;
 bolt_flat = 10 + 1;
 
+nbolts = 2;
+
 open_gap = 10;
 
 hinge_unit = 10;
@@ -30,9 +32,15 @@ hhook_inside = 40;
 hhook_th = 4;
 hhook_l = 40;
 
-// ========== calculated ==========
+// ========== defaults ==========
 
+pin_head_th = th/2;
 pin_dia = th;
+pin_hole_dia = pin_dia/2;
+pin_tail = pin_hole_dia + pin_head_th + hinge_z_gap*3;
+
+// ========== calculated ==========
+
 hole_dia = th + pin_gap;
 
 main_r = tube_dia/2 + th;
@@ -55,6 +63,8 @@ max_z = +total_z/2;
 
 pin_flatten = pin_dia/2 * (1 - cos(45));
 
+bolt_stride = total_z / nbolts;
+
 // calculated - vhook
 
 vhook_inside = 15;
@@ -149,8 +159,8 @@ module HalfClampX(flatten=false){
 	  linextr(0, hinge_unit) MainPlanA(flatten);
       }
     }
-    for (dz=[-1,+1]) {
-      translate([ bolt_x, 0, dz * total_z/4 ]) {
+    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_dia/2, h= tube_dia);
@@ -229,12 +239,12 @@ module HHookHookPlan(){
     difference(){
       circle(r = hhook_outer_dia/2);
       circle(r = hhook_inside/2);
-      rectfromto([-hhook_outer_dia, -hhook_outer_dia],
+      rectfromto([+hhook_outer_dia, -hhook_outer_dia],
 		 [0,                +hhook_outer_dia]);
     }
     translate([0, -(hhook_inside/2 + hhook_th/2)]){
       hull(){
-	for (x=[0.1, -hhook_l]) {
+	for (x=[-0.1, hhook_l]) {
 	  translate([x,0]) square(center=true, hhook_th);
 	}
       }
@@ -242,6 +252,13 @@ module HHookHookPlan(){
   }
 }
 
+module HHookPartA(){ ////toplevel
+  DummyA();
+  linextr(min_z, max_z) {
+    HHookHookPlan();
+  }
+}
+
 module HHookPlanDemo(){
   MainPlanA();
   HHookHookPlan();
@@ -249,6 +266,29 @@ module HHookPlanDemo(){
 
 // ---------- misc ----------
 
+module PinSitu(){ ////toplevel
+  difference(){
+    union(){
+      translate([0,0, -pin_head_th])
+	cylinder(r= pin_dia/2, h = total_z + pin_head_th + pin_tail);
+      mirror([0,0,1])
+	cylinder(r= hinge_o_r - pin_gap, h = pin_head_th);
+    }
+    translate([0,0, total_z + pin_tail/2])
+      rotate([0,90,0])
+      translate([0,0, -pin_dia])
+      cylinder(r= pin_hole_dia/2, h=pin_dia*2);
+    translate([pin_dia/2 * cos(45), -50, -pin_head_th*2])
+      cube([50,100, total_z*2]);
+  }
+}
+
+module Pin(){ ////toplevel
+  rotate([0,90,0]) {
+    PinSitu();
+  }
+}
+
 module GeneralB(){ ////toplevel
   HalfClampX(true);
 }
@@ -279,6 +319,8 @@ module PlanDemo(){ ////toplevel
 module Demo(){ ////toplevel
   color("red") rotate([180,0,0]) GeneralB();
   color("blue") DummyA();
+  color("orange") translate([hinge_x, 0, min_z - hinge_z_gap])
+    rotate([0,0,180]) PinSitu();
 }
 
 //PlanDemo();