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=376662eb0d55bcab7b0f8c5e8b70e6cf9ae53dc1;hp=f729fbd55904dfa2f605e569bd8901fba8924973;hb=156db7e3f7e1588b02761647901279164869bbf8;hpb=b608373ab33b39219c963ad5e7614ef257d1dfd8

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index f729fbd..376662e 100644
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -15,9 +15,9 @@ lockshaft_dia = 14.35;
 cliprecess_h = 16;
 total_h = 45;
 
-back_gap = 14.5;
-main_th = 3.25;
-tube_th = 2.50;
+back_gap = 12.5;
+main_th = 3.50;
+tube_th = 4.00;
 
 midweb_d = 3;
 clip_th = 3.5;
@@ -35,13 +35,19 @@ join_cr = 9;
 
 tube_rear_extra_th = 1;
 
-divide_shaft_w = 3;
-divide_shaft_l = 3;
-divide_head_dx = 3;
-divide_head_th = 3;
-divide_gap = 0.75;
+divide_shaft_w = 1.75;
+divide_shaft_l = 1.5;
+divide_head_dx = 1.75;
+divide_head_th = 1.5;
+divide_gap = 0.50;
 divide_heads = 2;
 
+divide_angle = 26;
+divide_fudge_r = 4.75;
+divide_around = 3.5;
+
+backflange_angle = 20;
+
 // calculated
 
 lockshaft_r = [1, 1] * lockshaft_dia / 2;
@@ -88,55 +94,79 @@ module JoinCircs(jr){
   }
 }
 
-module DividePlan(){
+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([divide_shaft_w, 0]) square([10, g]);
+    translate([w, 0]) square([xl, g]);
     for (i=[0:divide_heads-1]) {
-      translate([divide_shaft_w, i*(divide_shaft_l + divide_head_th)]) {
-	translate([0, 0]) square([g, divide_shaft_l + g]);
-	translate([0, divide_shaft_l]) square([divide_head_dx + g, g]);
-	translate([dx, divide_shaft_l]) square([g, divide_head_th + g]);
-	translate([0, divide_shaft_l + divide_head_th])
+      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]);
       }
     }
-    translate([-0.1, (divide_shaft_l + divide_head_th) * divide_heads])
-      square([divide_shaft_w + g, g]);
+    translate([-0.1, (l + t) * divide_heads])
+      square([w + g, g]);
   }
 }
 
+module DividePlanInPlace(xl=10){
+  rotate([0,0, -divide_angle])
+    translate([ -tube_dia/2 -tube_th/2 - divide_fudge_r, 0])
+    DividePlan(xl);
+}
+
 module MainPlan(){
   difference(){
     union(){
-      hull(){
-	for (t=[0, tube_rear_extra_th])
-	  translate([0, -t])
-	    circle(r = tube_or);
-      }
-      translate([-back_ohw,0]) mirror([0,1])
-	square([back_ohw*2, backflange_ymin]);
-
-      translate([0, lock_0y]){
-	oval(lock_or);
+      difference(){
+	union(){
+	  hull(){
+	    for (t=[0, tube_rear_extra_th])
+	      translate([0, -t])
+		circle(r = tube_or);
+	  }
+	  rotate([0,0, backflange_angle])
+	    translate([-back_ohw,0]) mirror([0,1])
+	    square([back_ohw*2, backflange_ymin]);
+
+	  translate([0, lock_0y]){
+	    oval(lock_or);
+	  }
+
+	  hull(){
+	    JoinCircs(0.01);
+	    polygon([[0,0], lock_0, [-lock_0[0], lock_0[1]]]);
+	  }
+	}
+
+	rotate([0,0, backflange_angle])
+	  translate([-back_gap/2,1]) mirror([0,1])
+	  square([back_gap, backflange_ymin+2]);
+
+	JoinCircs(join_cr);
       }
 
       hull(){
-	JoinCircs(0.01);
-	polygon([[0,0], lock_0, [-lock_0[0], lock_0[1]]]);
+	minkowski(){
+	  DividePlanInPlace(0.1);
+	  circle(divide_around);
+	}
       }
     }
-
-    circle(r = tube_dia/2);
-    translate([-back_gap/2,1]) mirror([0,1])
-      square([back_gap, backflange_ymin+2]);
-
     translate([0, lock_0y]){
       oval([lock_w/2, lock_d/2]);
     }
 
-    JoinCircs(join_cr);
+    circle(r = tube_dia/2);
+
+    DividePlanInPlace();
   }
 }
 
@@ -209,14 +239,14 @@ module MainPositive(){
   }
 }
 
-module Bracket(){ //// toplevel
+module Bracket(){ ////toplevel
   difference(){
     MainPositive();
     ThroughHoles();
   }
 }
 
-module TestTopEdge(){ //// toplevel
+module TestTopEdge(){ ////toplevel
   intersection(){
     translate([0,0, -total_h])
       translate([0,0, 4])
@@ -226,7 +256,7 @@ module TestTopEdge(){ //// toplevel
   }
 }
 
-module TestClipBoltHole(){ //// toplevel
+module TestClipBoltHole(){ ////toplevel
   intersection(){
     union(){
       translate([0, 0, -5])
@@ -246,5 +276,7 @@ module TestClipBoltHole(){ //// toplevel
 //%ThroughHoles();
 //TestTopEdge();
 //TestClipBoltHole();
+//DividePlan();
+
+//Bracket();
 
-Bracket();