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belt-slot-cut-jig: many adjustments
author
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Mon, 10 Jun 2013 00:15:39 +0000
(
01:15
+0100)
committer
Ian Jackson
<ijackson@chiark.greenend.org.uk>
Mon, 10 Jun 2013 00:15:39 +0000
(
01:15
+0100)
belt-slot-cut-jig.scad
patch
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diff --git
a/belt-slot-cut-jig.scad
b/belt-slot-cut-jig.scad
index e7d8ca572349a6d5b110cbfaccc731102e9d9e94..6f894b596c765a05af1aff576b31ac89215a02a3 100644
(file)
--- a/
belt-slot-cut-jig.scad
+++ b/
belt-slot-cut-jig.scad
@@
-1,14
+1,14
@@
// -*- C -*-
// todo
// -*- C -*-
// todo
-// attachment point move up so clears when inserted
-// onejig must be deep enough for strap plus motion plus holder
-// even deeper for side rails
-// what about existing slot locator ? maybe not
+// various registration marks
+// protrustions at ends at strap width and middle
+// grooves on top face at 1/4,1/2,3/4 length and 1/2 width
crewpunch_slop = 0.3;
holder_min_wall = 2;
crewpunch_slop = 0.3;
holder_min_wall = 2;
+holder_attach_near_wall = 3;
holder_attach_xsz = 5;
holder_ctie_width = 4.0 + 0.5;
holder_attach_xsz = 5;
holder_ctie_width = 4.0 + 0.5;
@@
-18,10
+18,15
@@
holder_attach_roof = 2.5;
jig_interval = 25;
strap_width = 25;
jig_interval = 25;
strap_width = 25;
+strap_thick = 3;
edgewall_width = 3;
edgewall_width = 3;
+punch_travel = 8;
+
main_slop = 0.5;
main_slop = 0.5;
+jig_max_len = 130;
+
// from careful measurement
crewpunch_shape =
// from careful measurement
crewpunch_shape =
@@
-44,7
+49,7
@@
crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
// computed
attach_ysz = holder_attach_walls*2 + holder_ctie_width;
// computed
attach_ysz = holder_attach_walls*2 + holder_ctie_width;
-holder_front_
w
all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
+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];
+ attach_ysz;
holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
@@
-52,9
+57,16
@@
holder_xsz = crewpunch_biggest_shape[2][0] + crewpunch_biggest_shape[2][1] +
holder_min_wall*2;
crewpunch_biggest_y =
crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
holder_min_wall*2;
crewpunch_biggest_y =
crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
-holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_wall;
+holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all;
+
+attach_offset = 0.5 * (holder_front_all - holder_attach_near_wall);
-attach_offset = holder_attach_xsz + holder_min_wall;
+jig_main_zsz = holder_block_zsz + punch_travel;
+
+jig_ends_extra = 2;
+
+jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
+echo(jig_iters);
// objects
// objects
@@
-85,7
+97,7
@@
module PunchHolder(cutouts=true){
cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
if (cutouts)
translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
if (cutouts)
translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
- crewpunch_biggest_shape[1][0] + holder_front_
w
all,
+ crewpunch_biggest_shape[1][0] + holder_front_all,
-crewpunch_smallest_shape[0]])
CrewPunch();
}
-crewpunch_smallest_shape[0]])
CrewPunch();
}
@@
-93,9
+105,12
@@
module PunchHolder(cutouts=true){
translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
cube([holder_attach_xsz,
attach_ysz,
translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
cube([holder_attach_xsz,
attach_ysz,
- holder_block_zsz + holder_ctie_thick + holder_attach_roof + 1]);
+ holder_block_zsz + punch_travel
+ + holder_ctie_thick + holder_attach_roof + 1]);
if (cutouts)
if (cutouts)
- translate([-30, holder_attach_walls, holder_block_zsz + 0.1])
+ translate([-30,
+ holder_attach_walls,
+ holder_block_zsz + punch_travel])
cube([60, holder_ctie_width, holder_ctie_thick]);
}
}
cube([60, holder_ctie_width, holder_ctie_thick]);
}
}
@@
-105,18
+120,34
@@
module OneJig(){
difference(){
translate([-(jig_interval/2 + 1),
-(strap_width/2 + edgewall_width) - attach_offset,
difference(){
translate([-(jig_interval/2 + 1),
-(strap_width/2 + edgewall_width) - attach_offset,
-
0
])
+
-strap_thick
])
cube([jig_interval + 2,
strap_width + edgewall_width*2 + attach_offset,
cube([jig_interval + 2,
strap_width + edgewall_width*2 + attach_offset,
-
holder_ysz
]);
+
jig_main_zsz + strap_thick
]);
minkowski(){
cube([main_slop*2, main_slop*2, 50], center=true);
PunchHolder(false);
}
minkowski(){
cube([main_slop*2, main_slop*2, 50], center=true);
PunchHolder(false);
}
+ translate([-100, -strap_width/2, -10])
+ cube([200, strap_width, 10]);
}
}
}
}
-
+
+module Jig(){
+ for (i=[0:jig_iters-1]) {
+ translate([jig_interval * i, 0, 0])
+ OneJig();
+ }
+}
+
+module Demo(){
+ %PunchHolder();
+ Jig();
+}
+
//CrewPunch();
//CrewPunch();
-PunchHolder();
+
//
PunchHolder();
//PunchHolder(false);
//OneJig();
//PunchHolder(false);
//OneJig();
+//Jig();
+Demo();