belt-slot-cut-jig: size adjustments

[reprap-play.git] / belt-slot-cut-jig.scad

diff --git a/belt-slot-cut-jig.scad b/belt-slot-cut-jig.scad
index 3d0f59f5ff3199a93f94be71eaf72c95fd6e28b0..b0771fbba5561679dbb1247dfddec419c9b09b86 100644 (file)
--- a/belt-slot-cut-jig.scad
+++ b/belt-slot-cut-jig.scad
@@ -17,7 +17,7 @@ holder_attach_walls = 3;
 holder_attach_roof = 2.5;
 
 jig_interval = 25;
-strap_width = 25;
+strap_width = 26.75 + 0.7;
 strap_thick = 3;
 edgewall_width = 3;
 
@@ -28,6 +28,14 @@ main_slop = 0.5;
 jig_max_len = 160; // print diagonally
 //jig_max_len = 30;
 
+registrationgroove_width = 0.8;
+registrationgroove_depth = 1.2;
+
+registrationprotrusion_poke = 3;
+registrationprotrusion_slope = 0.75;
+
+jig_overlap = 1;
+
 // from careful measurement
 
 crewpunch_shape =
@@ -66,7 +74,8 @@ jig_main_zsz = holder_block_zsz + punch_travel;
 
 jig_ends_extra = 2;
 
-jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
+//jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
+jig_iters=2;
 echo(jig_iters);
 
 // objects
@@ -117,9 +126,20 @@ module PunchHolder(cutouts=true){
   }
 }
 
+module RegistrationGroove(l){
+  // runs along the +ve X axis for length l but at correct z pos
+  translate([0, 0, jig_main_zsz + 0.1]) {
+    rotate([90,0,90])
+      linear_extrude(height=l)
+      polygon([[-registrationgroove_width/2, 0],
+              [ +registrationgroove_width/2, 0],
+              [ 0, -registrationgroove_depth ]]);
+  }
+}
+
 module OneJig(){
   difference(){
-    translate([-(jig_interval/2 + 1),
+    translate([-(jig_interval/2 + jig_overlap),
               -(strap_width/2 + edgewall_width) - attach_offset,
               -strap_thick])
       cube([jig_interval + 2,
@@ -131,16 +151,62 @@ module OneJig(){
     }
     translate([-100, -strap_width/2, -10])
       cube([200, strap_width, 10]);
+   translate([-100,0,0])
+     RegistrationGroove(200);
+   for (xfrac=[-1/4,0,+1/4])
+     translate([jig_interval * xfrac, -100, 0])
+       rotate([0,0,90])
+       RegistrationGroove(200);
+  }
+}
+
+module RegistrationProtrusion(){
+  // points towards the positive x axis
+  xsz = registrationprotrusion_poke;
+  ysz = registrationprotrusion_poke;
+  diag_sz = xsz * sqrt(2);
+  zsz = diag_sz / registrationprotrusion_slope;
+  hull(){
+    translate([0, 0, 0.1]){
+      linear_extrude(height=0.1)
+       polygon([[   0, -ysz ],
+                [ xsz,    0 ],
+                [   0,  ysz ]]);
+      translate([-0.1, 0, zsz ])
+       rotate([0,0,45])
+       cube(0.1);
+    }
   }
 }
 
 module Jig(){
+  for(end=[0,1]){
+    for(yfrac=[-1/2, 0, 1/2]){
+      translate([ end
+                 ? jig_interval * (jig_iters - 0.5)
+                 : -jig_interval/2,
+                yfrac * strap_width,
+                0])
+       rotate([0,0, end ? 0 : 180])
+       translate([ jig_overlap, 0, 0 ])
+       RegistrationProtrusion();
+    }
+  }
   for (i=[0:jig_iters-1]) {
     translate([jig_interval * i, 0, 0])
       OneJig();
   }
 }
 
+module JigT(){ ////toplevel
+  rotate([180,0,0])
+    Jig();
+}
+
+module PunchHolderT(){ ////toplevel
+  PunchHolder(true);
+}
+
 module Demo(){
   %PunchHolder();
   Jig();
@@ -151,4 +217,7 @@ module Demo(){
 //PunchHolder(false);
 //OneJig();
 //Jig();
-Demo();
+//Demo();
+//JigT();
+//RegistrationProtrusion();
+//PunchHolderT();