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=f1505675bb1a3bf5c4efc528ce1921e53e7c0cdb;hp=1267b9ffc3ba22b2b84112d4eaac08a5f2e85bae;hb=77c39f4394b1ede3825b88234a0d9832cc6d3b78;hpb=ae2f3d6abf054e8eddbd39798a10f291470e78cd

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index 1267b9f..f150567 100644
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -10,6 +10,7 @@ lock_w = 42.5 + 0.5;
 lock_d = 28.0 + 0.5;
 main_h = 45.0;
 backflange_d = 12;
+backflange_hole_dy = -1;
 lockshaft_dia = 14.35;
 
 cliprecess_h = 16;
@@ -57,7 +58,7 @@ front_th = main_th;
 
 tube_or = tube_dia/2 + tube_th;
 back_ohw = back_gap/2 + backflange_th;
-backflange_ymin = tube_or+backflange_d;
+backflange_ymin = tube_dia/2 + backflange_d;
 
 lock_0y = tube_dia/2 + lock_d/2 + midweb_d;
 lock_0x = lock_w/2 - lock_d/2;
@@ -96,35 +97,68 @@ module JoinCircs(jr){
   }
 }
 
-module DividePlan(xl=10){
-  w = divide_shaft_w;
-  g = divide_gap;
-  l = divide_shaft_l + g;
-  t = divide_head_th + g;
-  dx = divide_head_dx;
-  for (m=[0,1]) mirror([m,0]) {
-    translate([w, 0]) square([xl, g]);
-    for (i=[0:divide_heads-1]) {
-      translate([w, i*(l + t)]) {
-	translate([0, 0]) square([g, l + g]);
-	translate([0, l]) square([divide_head_dx + g, g]);
-	translate([dx, l]) square([g, t + g]);
-	translate([0, l + t])
-	  square([divide_head_dx + g, g]);
+module DivideHook(){ ////toplevel
+  w = tube_th/2;
+  d = divide_gap;
+
+  translate([-1,0] * (w + d + w)){
+    for (sx=[-1,+1])
+      translate([-(w + w+d) * sx, 0]) circle(r= w);
+    difference(){
+      circle(r = 3*w + d);
+      circle(r =   w + d);
+      translate([-10*w, -10*w]) square([20*w, 10*w]);
+    }
+  }
+}
+
+module DivideCut(){
+  w = tube_th/2;
+  d = divide_gap;
+  br = tube_dia/2 + tube_th;
+
+  difference(){
+    offset(r=divide_gap) DivideHook();
+    DivideHook();
+    translate([-2*w,0]) mirror([0,1]) square([4*w, 4*w]);
+  }
+}
+
+module DivideCutB(){
+  w = tube_th/2;
+  d = divide_gap;
+  br = tube_dia/2 + tube_th;
+  
+  intersection(){
+    translate([br - tube_th/2,0]) {
+      difference(){
+	circle(r=br + d);
+	circle(r=br);
       }
     }
-    translate([-0.1, (l + t) * divide_heads])
-      square([w + g, g]);
+    translate([-2*w, 0]) mirror([0,1]) square(4*w);
+  }
+}
+
+module DivideSurround(){
+  w = tube_th/2;
+  d = divide_gap;
+
+  offset(r= w*2) {
+    hull() {
+      DivideCut();
+      translate([-(4*w + 2*d), 8*w]) circle(r=w);
+    }
   }
 }
 
-module DividePlanInPlace(xl=10){
+module DivideInPlace(){
   rotate([0,0, -divide_angle])
-    translate([ -tube_dia/2 -tube_th/2 - divide_fudge_r, 0])
-    DividePlan(xl);
+    translate([ -tube_dia/2 -tube_th/2, 0])
+    children();
 }
 
-module MainPlan(){
+module MainPlan(){ ////toplevel
   difference(){
     union(){
       difference(){
@@ -155,12 +189,7 @@ module MainPlan(){
 	JoinCircs(join_cr);
       }
 
-      hull(){
-	minkowski(){
-	  DividePlanInPlace(0.1);
-	  circle(divide_around);
-	}
-      }
+      DivideInPlace() DivideSurround();
     }
     translate([0, lock_0y]){
       oval([lock_w/2, lock_d/2]);
@@ -168,7 +197,8 @@ module MainPlan(){
 
     circle(r = tube_dia/2);
 
-    DividePlanInPlace();
+    DivideInPlace() DivideCut();
+    DivideInPlace() DivideCutB();
   }
 }
 
@@ -223,7 +253,7 @@ module MountingHoleCylinders(r, x=-50){
   for (z=[ 1/4, 3/4 ]) {
     rotate([0,0, backflange_angle])
       ThroughHole( r,
-		   -tube_or -0.5*backflange_d,
+		   -tube_dia/2 -0.5*backflange_d + backflange_hole_dy,
 		   total_h * z,
 		   x);
   }
@@ -284,6 +314,12 @@ module Demo(){ ////toplevel
 				       back_ohw + 0.25);
 }
 
+module DivideDemo(){ ////toplevel
+  color("black") translate([0,0,-2]) MainPlan();
+  color("grey") DivideInPlace() DivideHook();
+  color("blue") translate([0,0,-4]) DivideInPlace() DivideCut();
+}
+
 //MainPlan();
 //ClipElevationPositive();
 //ClipElevation();
@@ -291,7 +327,6 @@ module Demo(){ ////toplevel
 //%ThroughHoles();
 //TestTopEdge();
 //TestClipBoltHole();
-//DividePlan();
 
 //Bracket();