X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=scaffold-clamp-common.scad;h=d2640b6a9a08ef3e8b75c0467896634de7a9da05;hp=4e9f36759e267902306214f23f3b5aca9536a674;hb=HEAD;hpb=42a7d031ba69b63bbe7edb8c8a57c0cadd22dfa1

diff --git a/scaffold-clamp-common.scad b/scaffold-clamp-common.scad
index 4e9f367..79ed1da 100644
--- a/scaffold-clamp-common.scad
+++ b/scaffold-clamp-common.scad
@@ -46,6 +46,14 @@ 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;
@@ -179,28 +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() {
@@ -373,6 +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