X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=ksafe-base.scad;h=2866278a2a7e9021af044eec63bed9f59f22c7ed;hp=adb2b35ef92fc9ad321b297af8c4448a98f7d874;hb=37e6240dbeb35539d789f702ebb41d2cae072a6d;hpb=d05b07b6b8f778396aa77f0544db43d98faf3141

diff --git a/ksafe-base.scad b/ksafe-base.scad
index adb2b35..2866278 100644
--- a/ksafe-base.scad
+++ b/ksafe-base.scad
@@ -1,33 +1,48 @@
 // -*- C -*-
 
-// xxx from actual ksafe
-bolt_above = 4;
-wall_thick = 4;
-bolthole_height = 4;
-bolthole_width = 10;
-main_sz = 30;
-cnr_rad = 10;
+// xxx from actual ksafe, needs slop adding
+bolt_above = 14.30;
+bolthole_height = 4.24;
+wall_thick = 4.50;
+bolthole_width = 16.62;
+main_sz = 150.56;
+cnr_rad = 13.5; // approx
+lidinner_thick_allow = 20.78;
 
 // other parameters
 web_thick = 4;
+web_height = 20; // excluding wall and base thick
 bolthole_rhs = 20;
 bolthole_lhs = 20;
 boltreinf_thick = 6;
-anchor_wall_space = 45;
+anchor_wall_space = 25;
 base_thick = 4;
-lidinner_thick_allow = 20;
 space = 25;
 anchor_thick = 4;
 anchor_rad = 4;
-bevel = 15;
+bevel = 8;
 
 // ----- calculated -----
 
+hsz = main_sz/2;
+
 gppA = [0,0];
 gppB = gppA - [ wall_thick, 0 ];
 
 gppL = [ gppB[0], -(lidinner_thick_allow + space + base_thick) ];
 
+yw1 = -web_thick/2;
+yw2 = yw1 - bolthole_rhs;
+yw3 = yw2 - anchor_thick;
+yw4 = yw3 - anchor_wall_space;
+yw5 = yw4 - wall_thick;
+yw6 = -(hsz - cnr_rad + 0.1);
+
+yw10 = web_thick/2;
+yw11 = yw2 + anchor_wall_space;
+yw12 = yw11 + wall_thick;
+yw13 = -yw6;
+
 // anchor
 
 anchor_b = anchor_thick + anchor_rad;
@@ -42,6 +57,13 @@ module upp_app_Vars(t_bevel){
   $xppJ = $xppE + wall_thick * [ 1, tan(22.5) ];
   $xppI = $xppF + base_thick * [ tan(22.5), 1 ];
 
+  // must pass a_bevel for t_bevel for these to be valid
+  $gppP = gppA + [0,-1] * lidinner_thick_allow;
+  $gppQ = $gppP + [1,-1] * web_height;
+  $gppR = $xppJ + [ 1, tan(22.5) ] * web_height;
+  $gppS = $xppI + [ tan(22.5), 1 ] * web_height;
+  $gppT = [ $gppQ[0], $xppE[1] ];
+
   children();
 }
 
@@ -52,7 +74,8 @@ module upp_app_Profile(){
 	    $xppF,
 	    $xppF + [1,0],
 	    $xppI + [1,0],
-	    $xppJ ]);
+	    $xppJ ],
+	  convexity=10);
 }
 
 
@@ -74,7 +97,8 @@ module AnchorProfile(){
 	polygon([ $xppE,
 		  $xppF,
 		  $xppF + [0,1],
-		  $xppE + [1,0] ]);
+		  $xppE + [1,0] ],
+	  convexity=10);
 	translate(appM) circle(r= anchor_b);
       }
       translate(appM) circle(r= anchor_rad);
@@ -91,17 +115,96 @@ module AnchorWallProfile(){
 	polygon([ $xppE,
 		  $xppF,
 		  $xppI,
-		  $xppJ ]);
+		  $xppJ ],
+	  convexity=10);
       }
     }
   }
 }
 
+module WebProfile(){
+  upp_app_Vars(a_bevel){
+    if ($gppR[1] <= $gppP[1]) {
+      polygon([ $gppP,
+		$xppE,
+		$gppT,
+		$gppQ ]);
+      polygon([ $gppP,
+		$xppE,
+		$xppF,
+		$gppS,
+		$gppR ],
+	  convexity=10);
+    } else {
+      polygon([ $gppP,
+		$xppE,
+		$xppF,
+		$gppS,
+		$gppP + web_height * [1,0] ],
+	  convexity=10);
+    }
+    polygon([ $gppS,
+	      $xppF,
+	      $xppF + [1,0],
+	      $gppS + [1,0] ],
+	  convexity=10);
+  }
+}
+
+module SomeBaseProfile(I, F){
+  polygon([ I,
+	    F,
+	    [ hsz+1, F[1] ],
+	    [ hsz+1, I[1] ] ]);
+}
+
+module BaseProfile(){
+  SomeBaseProfile($xppI, $xppF);
+}
+
+module SWalls(ymin, ymax, t_bevel) {
+  upp_app_Vars(t_bevel) {
+    translate([0,ymin,0])
+      mirror([0,1,0])
+      rotate([90,0,0])
+      linear_extrude(height= ymax-ymin, convexity=10)
+      for (xm=[0,1])
+	mirror([xm,0])
+	  translate([-hsz, 0])
+	    children();
+  }
+}
+
+module KsafeBase(){
+  /// corners
+  for (xm=[0,1]) for (ym=[0,1]) {
+    mirror([xm,0,0]) mirror([0,ym,0])
+    translate((hsz - cnr_rad) * [1,1])
+    intersection(){
+      rotate_extrude(convexity=10)
+	translate([-cnr_rad,0])
+	UsualProfile();
+      translate([0,0,-250])
+	cube([50,50,500]);
+    }
+  }
+
+  // side walls and base
+  SWalls(yw6 , yw4 , bevel  ) { UsualProfile();      BaseProfile(); }
+  SWalls(yw5 , yw4 , a_bevel) { AnchorWallProfile(); BaseProfile(); }
+  SWalls(yw5 , yw12, a_bevel) { NearAnchorProfile(); BaseProfile(); }
+  SWalls(yw3 , yw2 , a_bevel) { AnchorProfile();     BaseProfile(); }
+  SWalls(yw11, yw12, a_bevel) { AnchorWallProfile(); BaseProfile(); }
+  SWalls(yw11, yw13, bevel  ) { UsualProfile();      BaseProfile(); }
+}
+
 module DemoProfiles(){
   translate([0,0,-2]) color("yellow") AnchorWallProfile();
   color("red") AnchorProfile();
   translate([0,0,2]) color("black") NearAnchorProfile();
   translate([0,0,4]) color("blue") UsualProfile();
+  translate([0,0,-4]) color("pink") WebProfile();
 }
 
-DemoProfiles();
+//DemoProfiles();
+KsafeBase();