lock-inframe-bracket: from v1: thicker clip

[reprap-play.git] / lock-inframe-bracket.scad

diff --git a/lock-inframe-bracket.scad b/lock-inframe-bracket.scad
index 5b14c9d321d47ebc1103cb09e727689f0afa8759..815ad1eff8872a64c4f329e2198a7b002884a4f4 100644 (file)
--- a/lock-inframe-bracket.scad
+++ b/lock-inframe-bracket.scad
@@ -5,17 +5,33 @@ lock_w = 42.5 + 0.5;
 lock_d = 28.0 + 0.5;
 main_h = 45.0;
 backflange_d = 12;
+lockshaft_dia = 15.5;
+
+cliprecess_h = 16;
+total_h = 45;
 
 back_gap = 7;
 main_th = 2.5;
 midweb_d = 3;
+clip_th = 3.5;
+clip_gap = 2.5;
+clip_d = 22.0;
+
+mountscrew_dia = 4 + 0.5;
+clipbolt_dia = 5 + 0.5;
+
+backflange_th = 3.5;
+
+$fn=50;
 
 // calculated
 
+lockshaft_r = [1, 1] * lockshaft_dia / 2;
 front_th = main_th;
+tube_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;
@@ -54,4 +70,86 @@ module MainPlan(){
   }
 }
 
-MainPlan();
+lockshaft_or = lockshaft_r + [clip_th,clip_th];
+cliprecess_ymax = cliprecess_h - lockshaft_r[1];
+clip_ymin = cliprecess_ymax - total_h;
+clip_ogap = clip_gap + clip_th*2;
+
+module ClipElevationPositive(){
+  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]);
+}
+
+module ClipElevationNegative(){
+  hull(){
+    for (y=[0, cliprecess_ymax+1])
+      translate([0, y])
+       oval(lockshaft_r);
+  }
+  translate([-clip_gap/2, 1]) mirror([0,1]) square([clip_gap, 2-clip_ymin]);
+}
+
+module ClipElevation(){
+  difference(){
+    ClipElevationPositive(1);
+    ClipElevationNegative(0);
+  }
+}
+
+module ExtrudeClipElevation(extra=0){
+  translate([0,
+            lock_0y + lock_d/2 + clip_d + extra,
+            -clip_ymin])
+    rotate([90,0,0])
+    linear_extrude(height= clip_d + extra*2, convexity=100)
+    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(){
+      linear_extrude(height=total_h, convexity=100) MainPlan();
+      ExtrudeClipElevation() ClipElevationPositive();
+    }
+    ExtrudeClipElevation(1) ClipElevationNegative();
+  }
+}
+
+module Bracket(){
+  difference(){
+    MainPositive();
+    ThroughHoles();
+  }
+}
+
+//MainPlan();
+//ClipElevationPositive();
+//ClipElevation();
+//MainPositive();
+//%ThroughHoles();
+
+Bracket();