X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=flyscreen-handle.scad;h=3fe695aaa2779cdf3d3d5a20cb072e08240c079a;hp=4bc5798788074659a01600d4b5a6587673cc34fb;hb=94c6cc4ac55fa846260ad3c2e122a5fcef921b0b;hpb=337bc55a02593bb216305ead150136f80341d45b

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 4bc5798..3fe695a 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -1,18 +1,43 @@
 // -*- C -*-
 
-opening_height = 7.84;
-opening_depth = 7.88;
+opening_height = 7.84 - 0.3 + 0.60;
+opening_depth = 6.0; // 7.88;
 openingcnr_dia = 2.75;
 opening_topprotr = 1.54;
 
 gap = 0.25;
 
-bot_overlap = 5;
+retain_rad = 1.65;
+retain_protr = 0.35;
+retain_hgap_adjust = 1.5;
+
+retain_stalk_len = 8.0;
+retain_stalk_h = 1.5;
+retain_bend_gap = 2.0;
+retain_empir_angle = -10;
+retain_pushmore_adj = 0.0;
+
+hgap_empir_adjust = -0.5 -2.50;
+
+topprotr_rad = 0.35;
+
+bot_overlap = 4;
 bot_w = 3;
 
-handle_d = 2;
-handle_w = 8;
-handle_rh = 2;
+handle_w = 10;
+handle_rh = 3;
+handle_rcut = 3;
+
+cutout_gap = 1.5;
+
+total_len = 40;
+retain_len = 8;
+basics_len = 8;
+
+overret_hch = 5;
+
+peg_width_slop = 0.5;
+peg_inner_thick = 1.0;
 
 // calculated
 
@@ -20,27 +45,208 @@ ins_irad = openingcnr_dia/2 + gap;
 ins_orad = openingcnr_dia/2 + opening_height - gap;
 ins_th = ins_orad - ins_irad;
 
+handle_x0 = ins_irad + hgap_empir_adjust;
 handle_h = bot_overlap + ins_th;
 handle_y0 = -ins_orad-bot_overlap;
+handle_y1 = handle_y0 + handle_h;
+
+handle_x1 = handle_x0 + bot_w + handle_w;
+
+topprotr_y = -ins_irad + opening_topprotr;
+
+retain_mxy = [handle_x0 - retain_rad - retain_hgap_adjust,
+	      -ins_orad + retain_rad - retain_protr];
+
+retain_cutout_h = retain_rad * 2 + retain_bend_gap;
+
+overret_gaplen = retain_cutout_h / cos(retain_empir_angle);
+
+peg_width = retain_stalk_len -
+  (handle_x0 - retain_mxy[0]) / cos(retain_empir_angle)
+  - peg_width_slop;
+
+peg_height = retain_cutout_h - (retain_rad + retain_stalk_h)
+  + retain_pushmore_adj;
+
+retain1_len = retain_len + retain_stalk_len;
+retain1_base = total_len - retain1_len;
 
 module InsertSection(){
-  translate([-ins_orad, 0]) square([ins_th, opening_topprotr]);
+  hull(){
+    translate([-ins_irad, -ins_irad])
+      mirror([1, 0])
+      square([opening_depth - ins_irad, 0.1]);
+    translate([-ins_irad - topprotr_rad,
+	       topprotr_y - topprotr_rad])
+      circle(r=topprotr_rad, $fn=10);
+  }
   translate([0, -ins_orad]) square([ins_irad+1, ins_th]);
   intersection(){
-    translate([0.1,0.1]) mirror([1,1]) square([100,100]);
+    translate([0, -ins_irad])
+      mirror([1,1])
+      square([100, opening_depth]);
     difference(){
       circle(r= ins_orad);
-      circle(r= ins_irad, $fn=10);
+      circle(r= ins_irad, $fn=20);
     }
   }
 }
 
 module HandleSection(){
+  difference(){
+    hull(){
+      translate([handle_x0, handle_y0])
+	square([bot_w, handle_h]);
+      for (y= [handle_y1 - handle_rh/2,
+	       handle_y1 - ins_th + handle_rh/2]) {
+	translate([handle_x1 - handle_rh/2, y])
+	  circle(r= handle_rh/2, $fn=20);
+      }
+    }
+    hull(){
+      for (x= [handle_x0 + bot_w + handle_rcut/2,
+	       handle_x1 - handle_rh/2 - handle_rcut/2]) {
+	translate([x, handle_y1])
+	  circle(r = handle_rcut/2, $fn=20);
+      }
+    }
+  }
   hull(){
-    translate([ins_irad, handle_y0])
-      square([bot_w, handle_h]);
+    for (y= [handle_y1 -   handle_rh/2,
+	     handle_y1 - 3*handle_rh/2])
+      translate([handle_x1 - handle_rh/2, y])
+	circle(r = handle_rh/2, $fn=20);
+  }
+  translate([ handle_x1 - handle_rh*2,
+	      handle_y1 - handle_rh/2 ])
+    circle(r = handle_rh/2, $fn=20);
+}
+
+module RetainSection(){
+  translate(retain_mxy) {
+    rotate(retain_empir_angle) {
+      circle(r=retain_rad, $fn=20);
+      translate([0, -retain_pushmore_adj])
+	square([retain_stalk_len + 1, retain_stalk_h]);
+    }
+  }
+}
+
+module PegSection(delta){
+  hull(){
+    square([0.1,
+	    peg_height + delta]);
+    translate([peg_width - 0.1,
+	       peg_height/2 - peg_inner_thick/2])
+      square([0.1, peg_inner_thick]);
+  }
+}
+
+module PegSectionForDemo(delta){
+  translate(retain_mxy)
+    rotate(retain_empir_angle)
+    translate([retain_stalk_len - peg_width - peg_width_slop/2,
+	       retain_stalk_h - retain_pushmore_adj])
+    PegSection(delta);
+}
+
+module RetainCutout(gapping=false){
+  translate(retain_mxy) {
+    rotate(retain_empir_angle) {
+      translate([-50, -retain_rad]) {
+	square([50 + retain_stalk_len,
+		retain_cutout_h]);
+      }
+    }
+  }
+}  
+
+module GappingSection(){
+  difference(){
+    union(){
+      InsertSection();
+      HandleSection();
+    }
+    RetainCutout(true);
+  }
+}
+
+module WithRetainSection(){
+  difference(){
+    union(){
+      InsertSection();
+      HandleSection();
+    }
+    RetainCutout();
+  }
+  RetainSection();
+}
+
+module BasicSection(){
+  InsertSection();
+  HandleSection();
+}
+
+module Handle(){
+  bs1 = retain_len + overret_gaplen + 4;
+
+  translate([0,0,0])
+    linear_extrude(height= retain_len)
+    WithRetainSection();
+
+  translate([0,0, bs1])
+    linear_extrude(height= basics_len)
+    BasicSection();
+
+  translate([0,0, bs1+0.1]) mirror([0,0,1]) {
+    intersection_for (sl=[0,1]) {
+      multmatrix([[1,0,0,0],
+		  [0,1,sl,0],
+		  [0,0,1,0],
+		  [0,0,0,1]])
+	linear_extrude(height= overret_gaplen + 10, convexity=100)
+	BasicSection();
+    }
+  }
+  
+  linear_extrude(height=total_len, convexity=100) GappingSection();
+
+  translate([0,0, retain1_base]) {
+    intersection(){
+      linear_extrude(height=retain1_len, convexity=100)
+	WithRetainSection();
+      translate([retain_mxy[0], retain_mxy[1], 0])
+	rotate([0,0, retain_empir_angle])
+	translate([retain_stalk_len, -30, 0])
+	multmatrix([[1,0,-1,0],
+		    [0,1,0,0],
+		    [0,0,1,0],
+		    [0,0,0,1]])
+	cube([50, 60, 50]);
+    }
+  }
+}
+
+module Demo(){
+  color("red") translate([0,0,-3]) BasicSection();
+  color("blue") translate([0,0,3]) WithRetainSection();
+  color("orange") translate([0,0,7]) PegSectionForDemo(0);
+}
+
+module Test(){
+  linear_extrude(height=2) {
+    WithRetainSection();
+    translate([0, -handle_y0 + topprotr_y + 10])
+      BasicSection();
   }
 }
 
-InsertSection();
-HandleSection();
+Demo();
+//HandleSection();
+//InsertSection();
+//WithRetainSection();
+//BasicSection();
+//GappingSection();
+//Test();
+//Demo();
+//Handle();