knifeblock: introduce AtSides (nfc)

[reprap-play.git] / knifeblock.scad

diff --git a/knifeblock.scad b/knifeblock.scad
index 31e3654ec317224bf6045752fffa6e8662f0709a..8f125e3b96830cf695a0009dc7a5652f7e26ed44 100644 (file)
--- a/knifeblock.scad
+++ b/knifeblock.scad
@@ -3,33 +3,72 @@
 // properties of the knives
 nknives = 3;
 widths = [15.5, 15.8, 19.0];
-handlelenbase = 60;
-handlelendelta = [-10, 0, 0];
+handlelenbase = 75;
+handlelendelta = [-15, 0, 10];
 locations = [-35, 0, 40];
 bladew = 5; // 2.5
-maxhandledepth = 43.5;
+maxhandledepth = 45;
+
+templatescale = 27.2 / 19.6;
+
+coverlonglen = 120; // xxx
+covershortlen = 70; // xxx
 
 // other tuneables
-side = 5;
 front = 5;
 back = 5;
 height = 50;
+minsidein = 4;
+minsideout = 4;
+
+frontbackslop = 0.25;
+
+screwbackdepth = 6.0 - 1.0;
+screwdia =       4.0 + 0.5;
+screwcsinkdia =  9.8 + 1.0;
+
+screwabove = 15;
+
+coverthick = 2.4;
+coverside = coverthick;
 
-frontbackslop = 0.5;
+covertopwing = 15;
+covertopwingbase = 20;
+coveredge = 3;
 
-screwbackdepth = 16;
-screwdia = 3.6;
-screwcsinkdia = 8.7;
+pegstem = 3.5;
+peghead = 10;
+pegstemheight = 2;
+pegheight = 9;
+peglen = 12;
+
+recessblockwidth = peghead + pegstem*3;
+recessblockheight = peglen + pegstem*1.5;
+
+pegsloph = 0.5;
+pegslopv = 0.5;
+pegslopl = 0.5;
+
+pegdepthproportion = 0.67;
 
 // computed
+side = minsidein + screwcsinkdia + minsideout;
 totaldepth = front + maxhandledepth + back;
 
+minkx = locations[0] -         widths[0]        /2;
+maxkx = locations[nknives-1] + widths[nknives-1]/2;
+
+minx = minkx - side;
+maxx = maxkx + side;
+
+pegrecess = pegdepthproportion*totaldepth - 0.5*peglen;
+
 module ImportTemplate(w,k,t) {
   fn = str("knifeblock-knives-t",k,t,".dxf");
   echo(fn);
   translate([0,0, -w/2])
     linear_extrude(height=w)
-    import(file=fn, convexity=100);
+    scale(templatescale) import(file=fn, convexity=100);
 }
 
 module Knife(k){
@@ -50,20 +89,21 @@ module DoKnife(k){
 }
 
 module DoKnives(){
-  for (yshift=[-1,1]) {
-    translate([0, yshift * frontbackslop, 0])
-      for (k=[0:nknives-1]) {
-       DoKnife(k);
-      }
-  }
+  for (k=[0:nknives-1])
+    DoKnife(k);
 }
 
-module Block(){
-  minkx = locations[0] -         widths[0]        /2;
-  maxkx = locations[nknives-1] + widths[nknives-1]/2;
+module ScrewHole(){
+  translate([0,-50,0])
+    rotate([-90,0,0])
+    cylinder(r=screwdia/2, h=150, $fn=40);
+  translate([0, totaldepth-front - screwbackdepth, 0])
+    rotate([90,0,0])
+    cylinder(r=screwcsinkdia/2 / (sqrt(3)/2), h=100, $fn=6);
+}
 
-  minx = minkx - side;
-  maxx = maxkx + side;
+module Block(){
+  sidemidx = minsideout + screwcsinkdia/2;
 
   difference(){
     hull() mirror([0,0,1]) {
@@ -71,10 +111,97 @@ module Block(){
        cube([maxx-minx, totaldepth-front, height]);
       for (x=[minx + front/2, maxx - front/2])
        translate([x, -front/2, 0])
-       cylinder(r=side/2, h=height, $fn=30);
+       cylinder(r=front/2, h=height, $fn=30);
+    }
+    for (x=[minx + sidemidx, maxx - sidemidx]) {
+      translate([x, 0, -screwabove])
+       ScrewHole();
     }
-    #DoKnives();
+    for (yshift=[-1,1])
+      translate([0, yshift * frontbackslop, 0])
+       DoKnives();
   }
 }
 
-Block();
+module BlockPrint(){ ////toplevel
+  rotate([0,0,90])
+    Block();
+}
+
+module CoverTemplate(){
+  linear_extrude(height=coverthick)
+    polygon([[minx, 0],
+            [maxx, 0],
+            [maxx, coverlonglen],
+            [maxx - coverside, coverlonglen],
+            [minx, covershortlen]]);
+}
+
+module CoverSide(len){
+  translate([0, 0 ,0]) {
+    rotate([90,0,90])
+      linear_extrude(height=coverside)
+      polygon([[0,                      0],
+              [0,                      totaldepth],
+              [covertopwing,           totaldepth],
+              [covertopwingbase,       coverside + coverthick],
+              [len - covertopwingbase, coverside + coverthick],
+              [len - covertopwing,     totaldepth],
+              [len,                    totaldepth],
+              [len,                    0]]);
+    cube([recessblockwidth, recessblockheight, totaldepth]);
+  }
+}
+
+module PegTemplate(){
+  for (mx=[0,1]) for (my=[0,1]) {
+      mirror([mx,0,0]) mirror([0,my,0])
+       polygon([[-0.1,      -0.1],
+                [pegstem/2, -0.1],
+                [pegstem/2, pegstemheight/2],
+                [peghead/2, pegheight    /2],
+                [-0.1,      pegheight    /2]]);
+    }
+}
+
+module Peg(){
+  echo("peg angle slope (must be <1)",
+       (peghead-pegstem)/(pegheight-pegstemheight));
+  dx = pegsloph;
+  dy = pegslopv;
+  rotate([90,0,0]) {
+    linear_extrude(height=peglen-pegslopl) {
+      intersection(){
+       translate([-dx,-dy,0]) PegTemplate();
+       translate([-dx,+dy,0]) PegTemplate();
+       translate([+dx,+dy,0]) PegTemplate();
+       translate([+dx,-dy,0]) PegTemplate();
+      }
+    }
+  }
+}
+
+module AtSides(){
+  translate([minx,0,0])                 child(0);
+  translate([maxx,0,0]) mirror([1,0,0]) child(1);
+}
+
+module Cover(){
+  CoverTemplate();
+  AtSides() { CoverSide(covershortlen); CoverSide(coverlonglen); }
+}
+
+module CoverAligned(){
+  translate([0,-front,-height])
+    rotate([-90,0,0])
+    Cover();
+}
+
+module Demo(){ ////toplevel
+  %Block();
+  DoKnives();
+  color([0,0,1]) CoverAligned();
+}
+
+Demo();
+//Cover();