X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=belt-slot-cut-jig.scad;h=a89a071f34c1a9d1375ede5c003f723aa8a8a48e;hb=2800433b2a3dc1ab3b5db543e0889126a248b834;hp=e33d4e5617eb736dbdc01ceb8a8573ec39aada40;hpb=ccc68732d267e5acd4efcf660ee81f00ca6dcd22;p=reprap-play.git

diff --git a/belt-slot-cut-jig.scad b/belt-slot-cut-jig.scad
index e33d4e5..a89a071 100644
--- a/belt-slot-cut-jig.scad
+++ b/belt-slot-cut-jig.scad
@@ -21,7 +21,7 @@ strap_width = 26.75 + 0.7;
 strap_thick = 3;
 edgewall_width = 3;
 
-punch_travel = 12;
+punch_travel = 8;
 
 main_slop = 0.5;
 
@@ -44,29 +44,40 @@ 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;
+crewpunch_shaft_max_y = 3.5;
 
 crewpunch_systematic_size_error = +0.36;
 
-crewpunch_min_y = 4.7 - crewpunch_systematic_size_error;
-
 crewpunch_smallest_shape = crewpunch_shape[0];
 crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
 
+crewpunch_skew_angle = 3.5; //degrees
+crewpunch_skew_yoff = -1.1; //mm
+
 // computed
 
 attach_ysz = holder_attach_walls*2 + holder_ctie_width;
-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_min_wall*2;
+
+holder_skewangle_yextra = holder_xsz/2 * sin(abs(crewpunch_skew_angle));
+
+holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][0]
+  + attach_ysz + crewpunch_systematic_size_error + crewpunch_skew_yoff
+  + holder_skewangle_yextra;
+
 crewpunch_biggest_y =
   crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
-holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all;
+holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all
+  + max(0, -crewpunch_skew_yoff);
 
 attach_offset = 0.5 * (holder_front_all - holder_attach_near_wall);
 
@@ -90,7 +101,7 @@ module CrewPunch(){
 	    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,
-		      0.1 + layer[1][yind] + ourslop,
+		      0.1 + layer[1][1-yind] + ourslop,
 		      0.2]);
 	    }
       }
@@ -99,15 +110,20 @@ module CrewPunch(){
 }
 
 module PunchHolder(cutouts=true){
-  translate([-holder_xsz/2,
-	     -holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
-	     0]){
+  translations=[-holder_xsz/2,
+		-holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
+		0];
+  translate(translations){
     difference(){
       translate([0,attach_offset,0])
 	cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
       if (cutouts)
+	translate([0,-crewpunch_skew_yoff])
+	translate(-translations)
+	rotate([0,0,-crewpunch_skew_angle])
+	translate(translations)
 	translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
-		   crewpunch_biggest_shape[1][0] + holder_front_all,
+		   crewpunch_biggest_shape[1][1] + holder_front_all,
 		   -crewpunch_smallest_shape[0]])
 	  CrewPunch();
     }
@@ -199,7 +215,8 @@ module Jig(){
 }
 
 module JigT(){ ////toplevel
-  rotate([180,0,0])
+  translate([0,0,jig_main_zsz])
+    rotate([180,0,0])
     Jig();
 }
 
@@ -207,17 +224,28 @@ module PunchHolderT(){ ////toplevel
   PunchHolder(true);
 }
 
-module Demo(){
+module Demo(){ ////toplevel
   %PunchHolder();
   Jig();
 }
 
+module Kit(){ ////toplevel
+  rotate([0,0,-45]){
+    JigT();
+    translate([(jig_iters-1)*jig_interval/2,
+	       -strap_width,
+	       0])
+      PunchHolder();
+  }
+}
+
 //CrewPunch();
 //PunchHolder();
 //PunchHolder(false);
 //OneJig();
 //Jig();
-//Demo();
+Demo();
 //JigT();
 //RegistrationProtrusion();
 //PunchHolderT();
+//Kit();