X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=flyscreen-handle.scad;h=51e7ecbe2796ad530ee52fd5dc814360ebbd5da2;hb=e288468d384b3a997aa2cb132eca5601fcd18d2e;hp=68923392680e470b43d450667f2307cef06baad5;hpb=2b2c787099b30fdbdc9598e1b15e79ed4d0dc2ad;p=reprap-play.git

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 6892339..51e7ecb 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -1,44 +1,76 @@
 // -*- 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;
 
-retain_empir_angle = 20;
-retain_empir_stalkw = 1.0;
-retain_rad = 1.5;
+retain_rad = 1.65;
+retain_protr = 0.35;
+retain_hgap_adjust = 1.5;
+
+retain_stalk_len = 6.5;
+retain_stalk_h = 1.5;
+retain_bend_gap = 2.0;
+retain_empir_angle = -25;
+retain_pushmore_adj = 0.75;
+
+hgap_empir_adjust = -0.5 -2.50;
+
+topprotr_rad = 0.35;
 
 bot_overlap = 5;
 bot_w = 3;
 
-handle_d = 2;
 handle_w = 8;
-handle_rh = 2;
+handle_rh = 3;
 handle_rcut = 3;
 
 cutout_gap = 1.5;
 
+total_len = 35;
+retaining_len = 10;
+
+overret_hch = 5;
+
 // calculated
 
 ins_irad = openingcnr_dia/2 + gap;
 ins_orad = openingcnr_dia/2 + opening_height - gap;
 ins_th = ins_orad - ins_irad;
 
-handle_x0 = 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_pushmore_adj];
+
+retain_cutout_h = retain_rad * 2 + retain_bend_gap;
+
+overret_gaplen = retain_cutout_h / cos(retain_empir_angle);
+
 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=20);
@@ -74,44 +106,89 @@ module HandleSection(){
 }
 
 module RetainSection(){
-  rotate(180-retain_empir_angle)
-    translate([0,ins_orad]) circle(r=retain_rad, $fn=20);
+  translate(retain_mxy) {
+    rotate(retain_empir_angle) {
+      circle(r=retain_rad, $fn=20);
+      square([retain_stalk_len + 1, retain_stalk_h]);
+    }
+  }
 }
 
-module RetainCutout(){
-  rotate(180-retain_empir_angle)
-    translate([0,ins_orad]) {
-    difference(){
-      circle(r=retain_rad + cutout_gap, $fn=20);
-      rotate(180 + retain_empir_angle/2)
-	translate([0, -retain_empir_stalkw])
-	square([100, retain_empir_stalkw*2]);
+module RetainCutout(gapping=false){
+  translate(retain_mxy) {
+    rotate(retain_empir_angle) {
+      translate([-50, -retain_rad]) {
+	square([50 + retain_stalk_len,
+		retain_cutout_h]);
+      }
     }
   }
 }  
 
-module WithRetainSection(){
+module GappingSection(){
   difference(){
-    InsertSection();
-    RetainCutout();
+    union(){
+      InsertSection();
+      HandleSection();
+    }
+    RetainCutout(true);
   }
-  HandleSection();
-  RetainSection();
 }
 
-module Demo(){
+module WithRetainSection(){
   difference(){
-    InsertSection();
+    union(){
+      InsertSection();
+      HandleSection();
+    }
     RetainCutout();
   }
+  RetainSection();
+}
+
+module BasicSection(){
+  InsertSection();
   HandleSection();
-  color("red") RetainSection();
+}
+
+module Handle(){
+  bs0 = retaining_len + overret_gaplen;
+  bs1 = bs0 + overret_hch;
+  linear_extrude(height=total_len, convexity=100) GappingSection();
+  linear_extrude(height=retaining_len, convexity=100) WithRetainSection();
+  translate([0,0, bs1]) linear_extrude(height= total_len - bs1)
+    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();
+    }
+  }
+}
+
+module Demo(){
+  color("red") translate([0,0,-3]) BasicSection();
+  color("blue") translate([0,0,3]) WithRetainSection();
 }
 
 module Test(){
-  linear_extrude(height=2) WithRetainSection();
+  linear_extrude(height=2) {
+    WithRetainSection();
+//    translate([0, -handle_y0 + topprotr_y + 10])
+//      BasicSection();
+  }
 }
 
 //Demo();
+//HandleSection();
+//InsertSection();
 //WithRetainSection();
+//BasicSection();
+//GappingSection();
 Test();
+//Demo();
+//Handle();