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Tidy of sk_brackets as per scs_bearing_blocks code review.

This commit is contained in:
Martin Budden 2020-02-23 22:56:47 +00:00
parent ab17de3b0b
commit 66a8d1d583
2 changed files with 39 additions and 26 deletions
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6
tests/sk_brackets.scad
View File

@ -22,11 +22,13 @@ use <../utils/layout.scad>
include <../vitamins/sk_brackets.scad>
module sk_brackets() {
part_thickness = 5;
nuts = [undef, M5_nut, M5_sliding_t_nut, M5_sliding_t_nut];
layout([for(s = sk_brackets) 1.5 * sk_size(s)[1]])
sk_bracket_assembly(sk_brackets[$i], nut_type = nuts[$i]);
sk_bracket_assembly(sk_brackets[$i], part_thickness, nut_type = nuts[$i]);
}
if($preview)
sk_brackets();
let($show_threads = true)
sk_brackets();

59
vitamins/sk_bracket.scad
View File

@ -36,15 +36,15 @@ function sk_screw_separation(type) = type[9]; //! Separation of screws in the ba
module sk_bracket(type) { //! SK shaft support bracket
vitamin(str("sk_bracket(", type[0], "): SK", sk_diameter(type), " shaft support bracket"));
d = type[1];
h = type[2];
d = sk_diameter(type);
h = sk_hole_offset(type);
E = type[3];
W = type[4];
L = type[5];
F = type[6];
G = type[7];
W = sk_size(type)[0];
L = sk_size(type)[2];
F = sk_size(type)[1];
G = sk_base_height(type);
P = type[8];
B = type[9];
B = sk_screw_separation(type);
S = type[10];
bolthole_radius = type[11];
@ -93,24 +93,35 @@ module sk_bracket(type) { //! SK shaft support bracket
screw(M3_cap_screw, P - screw_head_height(M3_cap_screw) / 2 + eps);
}
module sk_bracket_assembly(type, screw_length = 16, screw_type = M5_cap_screw, nut_type = undef) { //! Assembly with fasteners in place
sk_bracket(type);
nut_type = is_undef(nut_type) ? screw_nut(screw_type) : nut_type;
module sk_bracket_hole_positions(type) { //! Place children at hole positions
for (x = [-sk_screw_separation(type), sk_screw_separation(type)])
translate([x / 2, sk_base_height(type) - sk_hole_offset(type), 0])
rotate([-90, 0, 0]) {
screw_and_washer(screw_type, screw_length);
translate_z(-screw_length + 2 * washer_thickness(screw_washer(screw_type)))
if(nut_type == M5_sliding_t_nut)
translate_z(nut_thickness(nut_type))
vflip()
sliding_t_nut(nut_type);
else
nut(nut_type)
washer(nut_washer(nut_type));
}
rotate([-90, 0, 0])
children();
}
module sk_bracket_assembly(type, part_thickness, screw_type = M5_cap_screw, nut_type = undef) { //! Assembly with fasteners in place
sk_bracket(type);
screw_type = is_undef(screw_type) ? scs_screw(type) : screw_type;
screw_washer_thickness = washer_thickness(screw_washer(screw_type));
nut_type = is_undef(nut_type) ? screw_nut(screw_type) : nut_type;
nut_washer_type = nut_washer(nut_type);
nut_washer_thickness = nut_washer_type ? washer_thickness(nut_washer_type) : 0;
nut_offset = sk_base_height(type) + part_thickness + nut_thickness(nut_type) + nut_washer_thickness;
screw_length = screw_longer_than(nut_offset + screw_washer_thickness);
sk_bracket_hole_positions(type) {
screw_and_washer(screw_type, screw_length);
translate_z(-nut_offset)
if(nut_type == M5_sliding_t_nut)
translate_z(nut_thickness(nut_type))
vflip()
sliding_t_nut(nut_type);
else
nut(nut_type)
washer(nut_washer(nut_type));
}
}