X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=ksafe-base.scad;h=c2e2704557e494b15ffc4097faf3e6a8122b13b7;hp=d6daa8f91bf3b0e5eb0be822a9a02d8d529edd95;hb=5e59ccda7842829762c8659e58c1f76ae13b7d90;hpb=9c3617a7b5dbe86334a9cfb107cf9ce037c58240

diff --git a/ksafe-base.scad b/ksafe-base.scad
index d6daa8f..c2e2704 100644
--- a/ksafe-base.scad
+++ b/ksafe-base.scad
@@ -4,10 +4,15 @@
 bolt_above = 8.50 - 0.50;
 bolthole_height = 4.24 + 1.00;
 wall_thick = 4.50;
-bolthole_width = 16.62 + 2.00;
-main_sz = 150.56 + 0.75;
-cnr_rad = 13.5; // approx
+bolthole_width = 16.62 + 1.00;
+main_sz = 149.06 - 0.25;
+cnr_rad = 19.5;
 lidinner_thick_allow = 20.78 + 0.50;
+display_width = 69.81 - 0.50;
+
+dpp3 = [ -5.5, 8.5 ];
+dpp2 = [ -11.0, 7.0 ];
+dpp1 = [ -34.0, 14.0 ];
 
 // other parameters
 web_thick = 4;
@@ -23,10 +28,23 @@ anchor_rad = 4;
 bevel = 8;
 string_slot = 3.0;
 string_depth = 6.0;
+thumbslot_depth = 5.0;
+thumbslot_width = 15.0;
+thumbslot_between = 10;
+ksafecover_lip = 4.62;
+display_rhs_secs = 15;
+dcover_endthick = 3.0;
+dcover_mainthick = 5.0;
+dcover_slop_height = 0.35;
+dcover_slop_depth = 0.25;
+dcover_slop_inside = 1.50;
+dcover_commonvertoff = 0.00; // slop_height or slop_inside is added too
+dcover_edge_gap_more_width = 2.0; // each side
 
 // ----- calculated -----
 
 hsz = main_sz/2;
+cut = main_sz + 20;
 
 gppA = [0,0];
 gppB = gppA - [ wall_thick, 0 ];
@@ -45,6 +63,19 @@ yw11 = yw2 + anchor_wall_space;
 yw12 = yw11 + wall_thick;
 yw13 = -yw6;
 
+cpp1 = dpp1 + [  dcover_slop_depth, dcover_slop_height ];
+cpp2 = [ dpp2[0] - dcover_slop_depth, dpp3[1] + dcover_slop_height ];
+cppH = cpp1 + [ 0, dcover_endthick ];
+cppA = [ cpp2[0], dpp3[1] + dcover_slop_inside ];
+cppK = cppA + [ 0, dcover_mainthick ];
+cppZ = [ -ksafecover_lip, -dcover_commonvertoff ];
+cppD = cppZ + [ 0, -dcover_slop_inside ];
+cppC = [ dcover_slop_inside, cppD[1] ];
+cppF = cppC + dcover_mainthick * [1,-1];
+cppB = [ cppC[0], cppA[1] ];
+cppG = [ cppF[0], cppK[1] ];
+cppE = [ cppD[0], cppF[1] - (cppF[0] - cppD[0]) ];
+
 // anchor
 
 anchor_b = anchor_thick + anchor_rad;
@@ -164,6 +195,27 @@ module BaseProfile(){
   SomeBaseProfile($xppI, $xppF);
 }
 
+module DCoverProfileRaw(){
+  polygon([ cpp1,
+	    cpp2,
+	    cppA,
+	    cppB,
+	    cppC,
+	    cppD,
+	    cppE,
+	    cppF,
+	    cppG,
+	    cppK,
+	    cppH ],
+	  convexity = 10);
+}
+
+module DCoverProfile(){
+  mirror([1,0])
+    translate(-cppZ)
+    DCoverProfileRaw();
+}
+
 module SWalls(ymin, ymax, t_bevel) {
   upp_app_Vars(t_bevel) {
     translate([0,ymin,0])
@@ -221,15 +273,34 @@ module Box(){
   rotate([0,0,90]) SWalls(yw6, yw13, bevel) UsualProfile();
 }
 
+module DCover(){ ////toplevel
+  translate([ -display_width/2, -hsz, 0 ])
+    rotate([0,90,0])
+    rotate([0,0,90])
+    linear_extrude( display_width - display_rhs_secs, convexity = 10)
+    DCoverProfile();
+}
+
+module DCoverSupportAllowance(){
+  translate([0, -hsz, 0])
+    cube(center=true,
+	 [ display_width + 2 * dcover_edge_gap_more_width,
+	   wall_thick * 2,
+	   dcover_slop_inside * 2 + 0.01 ]);
+}
+
+module BoltHoles(){
+  translate([0,0, -(bolt_above + 0.5 * bolthole_height)])
+    cube(center=true, [ cut, bolthole_width, bolthole_height ]);
+}
+
 module KsafeBase(){ ////toplevel
-  cut = main_sz + 20;
+  DCover();
 
   difference(){
     Box();
 
-    // bolt holes
-    translate([0,0, -bolt_above -0.5 * bolthole_height])
-      cube(center=true, [ cut, bolthole_width, bolthole_height ]);
+    BoltHoles();
 
     // string slot
     translate([ -cut,
@@ -239,15 +310,61 @@ module KsafeBase(){ ////toplevel
       cube([ cut*2,
 	     string_slot,
 	     lidinner_thick_allow + string_depth + 1 ]);
+
+    // thumb slots
+    for (mx=[0,1]) mirror([mx,0,0]) {
+      translate([ thumbslot_between/2,
+		  0,
+		  -thumbslot_depth ])
+	cube([ thumbslot_width,
+	       cut,
+	       thumbslot_depth+1 ]);
+    }
+
+    DCoverSupportAllowance();
   }
 }
 
-module DemoProfiles(){
+module DemoProfiles(){ ////toplevel
   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();
+  translate([0,0,6]) color("purple") DCoverProfile();
+}
+
+module RimTest(){ ////toplevel
+  intersection(){
+    Box();
+    cube(center=true, [ main_sz*2, main_sz*2,
+			2.5 ]);
+  }
+}
+
+module DCoverTest(){ ////toplevel
+  intersection(){
+    difference(){
+      union(){
+	Box();
+	DCover();
+      }
+      DCoverSupportAllowance();
+      BoltHoles();
+    }
+    translate([0,0,60])
+    cube(center=true, [ main_sz*2, main_sz*2,
+			2 * (60 + 10) ]);
+  }
+}
+
+module BoltTest(){ ////toplevel
+  dy = 0.5 * (bolthole_width+4);
+  intersection(){
+    KsafeBase();
+    translate([ 0, -dy, -(bolt_above + bolthole_height + 1) ])
+      cube([ main_sz, dy*2, 50 ]);
+  }
 }
 
 //DemoProfiles();