// protrustions at ends at strap width and middle
// grooves on top face at 1/4,1/2,3/4 length and 1/2 width
+strap_thick = 3;
+strap_width = 26.75 + 0.7;
+
+jig_interval = 25;
+
+edgewall_width = 3;
crewpunch_slop = 0.3;
+main_slop = 0.25;
holder_min_wall = 2;
-holder_attach_near_wall = 3;
+holder_attach_near_wall = 5;
holder_attach_xsz = 5;
holder_ctie_width = 4.0 + 0.5;
holder_attach_walls = 3;
holder_attach_roof = 2.5;
-jig_interval = 25;
-strap_width = 26.75 + 0.7;
-strap_thick = 3;
-edgewall_width = 3;
+holder_corner_round = 2.0;
punch_travel = 8;
-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 =
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 = 2.0; //degrees
+crewpunch_skew_angle = 3.5; //degrees
+crewpunch_skew_yoff = +1.1; //mm
// computed
+punch_dx = 0.5 * (-crewpunch_biggest_shape[2][0]
+ +crewpunch_biggest_shape[2][1]);
+punch_dy = 0.5 * (+crewpunch_biggest_shape[1][1]
+ -crewpunch_biggest_shape[1][0]) + crewpunch_skew_yoff;
+
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][1] + crewpunch_biggest_shape[2][0] +
+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_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all;
-attach_offset = 0.5 * (holder_front_all - holder_attach_near_wall);
+holder_skewangle_yextra = holder_xsz/2 * sin(abs(crewpunch_skew_angle));
+
+holder_max_y = punch_dy + crewpunch_biggest_shape[1][0] + holder_min_wall
+ + crewpunch_systematic_size_error + holder_skewangle_yextra;
+
+holder_attach_max_y = punch_dy
+ - max(crewpunch_biggest_shape[1][1], crewpunch_shaft_max_y)
+ - crewpunch_systematic_size_error - holder_skewangle_yextra;
+
+holder_block_min_y = punch_dy
+ - crewpunch_biggest_shape[1][1] - holder_attach_near_wall +
+ - crewpunch_systematic_size_error - holder_skewangle_yextra;
+
+holder_all_min_y = holder_attach_max_y - attach_ysz;
+
+jig_max_y = max(holder_max_y + main_slop, strap_width/2) + edgewall_width;
+jig_min_y = min(holder_all_min_y - main_slop, -strap_width/2) - edgewall_width;
jig_main_zsz = holder_block_zsz + punch_travel;
-jig_ends_extra = 2;
+// common stuff
-//jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
-jig_iters=2;
-echo(jig_iters);
+include <belt-cut-jig-common.scad>
// objects
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][1-xind] + ourslop,
- 0.1 + layer[1][yind] + ourslop,
+ cube([0.1 + layer[2][xind] + ourslop,
+ 0.1 + layer[1][1-yind] + ourslop,
0.2]);
}
}
}
}
+module MaybeRoundedCube(sizes, roundedness){
+ if (roundedness > 0) {
+ translate([roundedness, roundedness, 0]){
+ minkowski(){
+ cube([sizes[0] - roundedness*2,
+ sizes[1] - roundedness*2,
+ sizes[2]]);
+ cylinder(h=0.05, r=roundedness, $fn=20);
+ }
+ }
+ } else {
+ cube(sizes);
+ }
+}
+
module PunchHolder(cutouts=true){
- translations=[-holder_xsz/2,
- -holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
- 0];
- translate(translations){
+ roundedness = cutouts ? holder_corner_round : 0;
difference(){
- translate([0,attach_offset,0])
- cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
+ translate([-holder_xsz/2, holder_block_min_y, 0])
+ MaybeRoundedCube([holder_xsz,
+ holder_max_y - holder_block_min_y,
+ holder_block_zsz],
+ roundedness);
if (cutouts)
- translate(-translations)
rotate([0,0,-crewpunch_skew_angle])
- translate(translations)
- translate([crewpunch_biggest_shape[2][0] + holder_min_wall,
- crewpunch_biggest_shape[1][0] + holder_front_all,
+ translate([punch_dx,
+ punch_dy,
-crewpunch_smallest_shape[0]])
CrewPunch();
}
difference(){
- translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
- cube([holder_attach_xsz,
- attach_ysz,
- holder_block_zsz + punch_travel
- + holder_ctie_thick + holder_attach_roof + 1]);
+ translate([-holder_attach_xsz/2, holder_all_min_y, 0])
+ MaybeRoundedCube([holder_attach_xsz,
+ attach_ysz,
+ holder_block_zsz + punch_travel
+ + holder_ctie_thick + holder_attach_roof + 1],
+ roundedness);
if (cutouts)
translate([-30,
- holder_attach_walls,
+ holder_all_min_y + holder_attach_walls,
holder_block_zsz + punch_travel])
cube([60, holder_ctie_width, holder_ctie_thick]);
}
- }
-}
-
-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 + jig_overlap),
- -(strap_width/2 + edgewall_width) - attach_offset,
- -strap_thick])
- cube([jig_interval + 2,
- strap_width + edgewall_width*2 + attach_offset,
- jig_main_zsz + strap_thick]);
- minkowski(){
- cube([main_slop*2, main_slop*2, 50], center=true);
- PunchHolder(false);
- }
- 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 OneJigCutout(){
+ minkowski(){
+ cube([main_slop*2, main_slop*2, 50], center=true);
+ PunchHolder(false);
}
}
module JigT(){ ////toplevel
- rotate([180,0,0])
- Jig();
+ JigPrint();
}
module PunchHolderT(){ ////toplevel
PunchHolder(true);
}
-module Demo(){
+module Demo(){ ////toplevel
%PunchHolder();
Jig();
}
+module Kit(){ ////toplevel
+ JigT();
+ rotate([0,0,-45]){
+ translate([(jig_iters-1)*jig_interval/2,
+ jig_min_y - holder_max_y - 5,
+ 0])
+ PunchHolder();
+ }
+}
+
//CrewPunch();
//PunchHolder();
//PunchHolder(false);
//OneJig();
//Jig();
-//Demo();
+Demo();
//JigT();
//RegistrationProtrusion();
//PunchHolderT();
+//Kit();
~ianmdlvl / reprap-play.git / blobdiff