X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=belt-slot-cut-jig.scad;h=408ed235466d86196d964957ded8a278da720d6f;hp=6f894b596c765a05af1aff576b31ac89215a02a3;hb=b5c3f52029b2db29e620ea3f5d4ee1700e4e4d8c;hpb=a4e2a19b89e425eab0a07ee89f8b38f21429924f;ds=sidebyside

diff --git a/belt-slot-cut-jig.scad b/belt-slot-cut-jig.scad
index 6f894b5..408ed23 100644
--- a/belt-slot-cut-jig.scad
+++ b/belt-slot-cut-jig.scad
@@ -12,12 +12,12 @@ holder_attach_near_wall = 3;
 
 holder_attach_xsz = 5;
 holder_ctie_width = 4.0 + 0.5;
-holder_ctie_thick = 2.0 + 0.5;
+holder_ctie_thick = 3.0 + 0.5;
 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;
 
@@ -25,7 +25,16 @@ punch_travel = 8;
 
 main_slop = 0.5;
 
-jig_max_len = 130;
+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
 
@@ -35,7 +44,11 @@ crewpunch_shape =
    [ 10, [1.6, 6.5], [2.1, 12.8] ],
    [ 12, [1.8, 6.6], [2.3, 12.7] ],
    [ 14, [2.1, 6.8], [2.6, 13.0] ],
-   [ 16, [2.4, 6.9], [2.7, 13.2] ]];
+   [ 16, [2.4, 6.9], [2.7, 13.2] ],
+   [ 18, [2.5, 7.0], [2.9, 13.3] ],
+   [ 22, [3.1, 7.1], [3.2, 13.4] ],
+   [ 26, [3.3, 7.2], [3.5, 13.6] ], 
+   ];
 
 crewpunch_shaft_max_y = 7.5;
 
@@ -53,7 +66,7 @@ holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
   + attach_ysz;
 
 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
-holder_xsz = crewpunch_biggest_shape[2][0] + crewpunch_biggest_shape[2][1] +
+holder_xsz = crewpunch_biggest_shape[2][1] + crewpunch_biggest_shape[2][0] +
   holder_min_wall*2;
 crewpunch_biggest_y =
   crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
@@ -65,7 +78,8 @@ 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
@@ -79,7 +93,7 @@ module CrewPunch(){
 	  for(yind=[0,1]) //translate([0,yind?0.5:0,0])
 	    mirror([xind?1:0,0,0]) mirror([0,yind?0:1,0]){
 	      translate([-0.1,-0.1,-0.1])
-		cube([0.1 + layer[2][xind] + ourslop,
+		cube([0.1 + layer[2][1-xind] + ourslop,
 		      0.1 + layer[1][yind] + ourslop,
 		      0.2]);
 	    }
@@ -96,7 +110,7 @@ module PunchHolder(cutouts=true){
       translate([0,attach_offset,0])
 	cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
       if (cutouts)
-	translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
+	translate([crewpunch_biggest_shape[2][0] + holder_min_wall,
 		   crewpunch_biggest_shape[1][0] + holder_front_all,
 		   -crewpunch_smallest_shape[0]])
 	  CrewPunch();
@@ -116,9 +130,20 @@ 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,
@@ -130,16 +155,62 @@ 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();
@@ -150,4 +221,7 @@ module Demo(){
 //PunchHolder(false);
 //OneJig();
 //Jig();
-Demo();
+//Demo();
+//JigT();
+//RegistrationProtrusion();
+//PunchHolderT();