X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=flyscreen-handle.scad;h=c7f057f92bd222558b966f49e95157daeff3b291;hp=4bc5798788074659a01600d4b5a6587673cc34fb;hb=6fd7e47aa3f3709503b8cda8c8e767d3309b5ac8;hpb=337bc55a02593bb216305ead150136f80341d45b

diff --git a/flyscreen-handle.scad b/flyscreen-handle.scad
index 4bc5798..c7f057f 100644
--- a/flyscreen-handle.scad
+++ b/flyscreen-handle.scad
@@ -2,45 +2,148 @@
 
 opening_height = 7.84;
 opening_depth = 7.88;
-openingcnr_dia = 2.75;
-opening_topprotr = 1.54;
+openingedge_dia = 1.34;
+opening_protrh = 1.8;
 
-gap = 0.25;
+pivot_x = 6;
+inside_len = 4;
 
-bot_overlap = 5;
-bot_w = 3;
+pivoting_gap = 0.1;
 
-handle_d = 2;
-handle_w = 8;
-handle_rh = 2;
+outside_gap = 3;
+outside_len = 16;
+outend_height = 3;
+
+outside_pushh = 4;
+outside_pushslope = 1.4;
+outside_push_inadj = 0.82;
+
+ourcirc_r = 0.5 / 2;
+
+opening_protr_slop = 0.1;
+
+intooth_top_slop = 0.1;
+inside_h_xgap = 1;
+
+pivot_r = 2;
+pivot_slop = 0.25;
+
+width = 5;
 
 // calculated
 
-ins_irad = openingcnr_dia/2 + gap;
-ins_orad = openingcnr_dia/2 + opening_height - gap;
-ins_th = ins_orad - ins_irad;
+inside_h = opening_height/2 - opening_protrh - inside_h_xgap/2;
+
+edge_or = openingedge_dia/2 + opening_protr_slop;
+
+Q0 = [ openingedge_dia/2,
+       openingedge_dia/2 + opening_height/2 ];
+
+p4p5d = [edge_or + ourcirc_r, 0];
 
-handle_h = bot_overlap + ins_th;
-handle_y0 = -ins_orad-bot_overlap;
+P0 = [ pivot_x, pivoting_gap ];
+P4 = Q0 - p4p5d;
+P3t = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh
+	- intooth_top_slop - ourcirc_r ];
+P2 = P4 + [ -(inside_len - ourcirc_r*2), 0 ];
+P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ];
+P9 = [ outside_len - ourcirc_r, outside_gap/2 + ourcirc_r ];
+P8 = P9 + [ 0, outend_height - ourcirc_r*2 ];
+P5 = Q0 + p4p5d;
 
-module InsertSection(){
-  translate([-ins_orad, 0]) square([ins_th, opening_topprotr]);
-  translate([0, -ins_orad]) square([ins_irad+1, ins_th]);
-  intersection(){
-    translate([0.1,0.1]) mirror([1,1]) square([100,100]);
+P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ];
+P7 = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope,
+       P1[1] ];
+
+P3a = P3t + [ -outside_push_inadj, 0 ];
+P6a = P6t + [ -outside_push_inadj, 0 ];
+
+outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]);
+
+module ExtrusionSect(){
+  cr = openingedge_dia/2;
+  toph = opening_height/2 + opening_protrh;
+
+  for (my=[0,1]) {
+    mirror([0,my]) {
+      translate(Q0) {
+	hull(){
+	  circle(r=cr, $fn=20);
+	  translate([-cr,10]) square([cr*2, 1]);
+	}
+      }
+    }
+  }
+  translate([-opening_depth, -toph]) {
     difference(){
-      circle(r= ins_orad);
-      circle(r= ins_irad, $fn=10);
+      translate([-5,-5])
+	square([opening_depth+6, toph*2+10]);
+      square([opening_depth+2, toph*2]);
     }
   }
 }
 
-module HandleSection(){
+module PsHull(ps) {
   hull(){
-    translate([ins_irad, handle_y0])
-      square([bot_w, handle_h]);
+    for (p = ps) {
+      translate(p)
+	circle(r = ourcirc_r, $fn=10);
+    }
+  }
+}
+
+module LeverSect(inadj=false){
+  P3 = inadj ? P3a : P3t;
+  diag = inadj ? 0 : atan(outside_push_inadj_slope);
+  PsHull([P2,P3,P4]);
+  difference(){
+    PsHull([P0,P1,P2,P5,P8,P9]);
+    translate(Q0) {
+      rotate(diag){
+	hull(){
+	  circle(r=edge_or, $fn=20);
+	  translate([0,10]) circle(r=edge_or, $fn=20);
+	}
+      }
+    }
+  }
+}
+
+module LeverSectTop(){
+  difference(){
+    LeverSect(false);
+    translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20);
+  }
+}
+
+module LeverSectBot(inadj=false){
+  P6 = inadj ? P6a : P6t;
+  mirror([0,1]) {
+    LeverSect(inadj);
+    PsHull([P5,P6,P7]);
+    translate([pivot_x,0]) circle(r=pivot_r, $fn=20);
   }
 }
 
-InsertSection();
-HandleSection();
+module Demo(){
+  translate([0,0,-5]) color("white") ExtrusionSect();
+  LeverSectTop();
+  LeverSectBot();
+}
+
+module LeverTop(){
+  linear_extrude(height=width, convexity=100) LeverSectTop();
+}
+
+module LeverBot(inadj=false){
+  linear_extrude(height=width, convexity=100) LeverSectBot(inadj);
+}
+
+module Test(){
+  translate([0,2,0]) LeverTop();
+  LeverBot();
+  translate([0,-opening_height - 2,0]) LeverBot(true);
+}
+
+//Demo();
+Test();