X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=lock-inframe-bracket.scad;h=6df5733e8e1a26d8dc25a9fdb4dd5bba10979ad7;hp=b890609290ef7a877e0b8a9f37bb55287da1b84a;hb=efe66e97688a445eb96db3c0f3f4d805ab644113;hpb=2ce2c9f4e8d07c6ea0d80f8c003b8dd2eb51a7c6

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index b890609..6df5733 100644
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -1,28 +1,38 @@
 // -*- C -*-
 
-tube_dia = 27.5 + 0.5;
+tube_dia = 27.5 + 1.625;
 lock_w = 42.5 + 0.5;
 lock_d = 28.0 + 0.5;
 main_h = 45.0;
 backflange_d = 12;
+lockshaft_dia = 14.35;
 
-lockshaft_r = [5, 5];
 cliprecess_h = 16;
 total_h = 45;
 
-back_gap = 7;
+back_gap = 10;
 main_th = 2.5;
+tube_th = 2.25;
+
 midweb_d = 3;
-clip_th = 2.5;
+clip_th = 3.5;
 clip_gap = 2.5;
 clip_d = 22.0;
 
+mountscrew_dia = 4 + 0.5;
+clipbolt_dia = 5 + 0.1;
+
+backflange_th = 3.5;
+
+$fn=50;
+
 // calculated
 
+lockshaft_r = [1, 1] * lockshaft_dia / 2;
 front_th = main_th;
 
-tube_or = tube_dia/2 + main_th;
-back_ohw = back_gap/2 + main_th;
+tube_or = tube_dia/2 + tube_th;
+back_ohw = back_gap/2 + backflange_th;
 backflange_ymin = tube_or+backflange_d;
 
 lock_0y = tube_dia/2 + lock_d/2 + midweb_d;
@@ -67,7 +77,11 @@ clip_ymin = cliprecess_ymax - total_h;
 clip_ogap = clip_gap + clip_th*2;
 
 module ClipElevationPositive(){
-  oval(lockshaft_or);
+  hull(){
+    oval(lockshaft_or);
+    translate([0, -lockshaft_or[1] * sqrt(2)])
+      square(center=true, 0.5);
+  }
   translate([-lockshaft_or[0], 0])
     square([lockshaft_or[0]*2, cliprecess_ymax]);
   translate([-clip_ogap/2, 0]) mirror([0,1]) square([clip_ogap, -clip_ymin]);
@@ -98,6 +112,24 @@ module ExtrudeClipElevation(extra=0){
     children(0);
 }
 
+module ThroughHole(r, y, z) {
+  translate([-50, y, z])
+    rotate([0, 90, 0])
+    cylinder(r=r, h=100, $fn=20);
+}
+
+module ThroughHoles(){
+  for (z=[ 1/4, 3/4 ]) {
+    ThroughHole( mountscrew_dia/2,
+		 -tube_or -0.5*backflange_d,
+		 total_h * z );
+  }
+
+  ThroughHole( clipbolt_dia/2,
+	       lock_0y + lock_d/2 + clip_d/2 + front_th/2,
+	       total_h - cliprecess_h - clip_th - clip_d/2 );
+}
+
 module MainPositive(){
   difference(){
     union(){
@@ -108,6 +140,42 @@ module MainPositive(){
   }
 }
 
+module Bracket(){ //// toplevel
+  difference(){
+    MainPositive();
+    ThroughHoles();
+  }
+}
+
+module TestTopEdge(){ //// toplevel
+  intersection(){
+    translate([0,0, -total_h])
+      translate([0,0, 4])
+      Bracket();
+    translate([-200,-200,0])
+      cube([400,400,100]);
+  }
+}
+
+module TestClipBoltHole(){ //// toplevel
+  intersection(){
+    union(){
+      translate([0, 0, -5])
+	Bracket();
+      translate([-4, lock_0y + lock_d/2 + 1, 0])
+	cube([8, 4, 1.5]);
+    }
+    translate([-200, lock_0y + lock_d/2 + 0.1])
+      cube([400, 400, total_h-20]);
+  }
+}
+
 //MainPlan();
+//ClipElevationPositive();
 //ClipElevation();
-MainPositive();
+//MainPositive();
+//%ThroughHoles();
+//TestTopEdge();
+//TestClipBoltHole();
+
+//Bracket();