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Cs screw head shape more accurate.

This commit is contained in:
Chris Palmer 2020-12-10 16:33:26 +00:00
parent 4b033d9945
commit b4f8892b1a
5 changed files with 30 additions and 36 deletions
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66
vitamins/screw.scad
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@ -41,7 +41,7 @@ function screw_pilot_hole(type) = type[11]; //! Pilot hole radius for w
function screw_clearance_radius(type) = type[12]; //! Clearance hole radius
function screw_nut_radius(type) = screw_nut(type) ? nut_radius(screw_nut(type)) : 0; //! Radius of matching nut
function screw_boss_diameter(type) = max(washer_diameter(screw_washer(type)) + 1, 2 * (screw_nut_radius(type) + 3 * extrusion_width)); //! Boss big enough for nut trap and washer
function screw_head_depth(type, d) = screw_head_height(type) ? 0 : screw_head_radius(type) - d / 2; //! How far a counter sink head will go into a straight hole diameter d
function screw_head_depth(type, d) = screw_head_height(type) ? 0 : screw_head_radius(type) - d / 2 + screw_radius(type) / 5; //! How far a counter sink head will go into a straight hole diameter d
function screw_longer_than(x) = x <= 5 ? 5 : //! Returns shortest screw length longer or equal to x
x <= 8 ? 8 :
@ -109,6 +109,27 @@ module screw(type, length, hob_point = 0, nylon = false) { //! Draw specified sc
cylinder(r = rad + eps, h = shank);
}
module cs_head(socket_rad, socket_depth) {
head_t = rad / 5;
head_height = head_rad + head_t;
rotate_extrude()
difference() {
polygon([[0, 0], [head_rad, 0], [head_rad, -head_t], [0, -head_height]]);
translate([0, -socket_depth + eps])
square([socket_rad, 10]);
}
translate_z(-socket_depth)
linear_extrude(socket_depth)
difference() {
circle(socket_rad + 0.1);
children();
}
}
explode(length + 10) {
if(head_type == hs_cap) {
color(colour) {
@ -201,50 +222,23 @@ module screw(type, length, hob_point = 0, nylon = false) { //! Draw specified sc
}
if(head_type == hs_cs) {
head_height = head_rad;
socket_rad = 0.6 * head_rad;
socket_depth = 0.3 * head_rad;
socket_width = 1;
color(colour) {
rotate_extrude()
difference() {
polygon([[0, 0], [head_rad, 0], [0, -head_height]]);
color(colour)
cs_head(socket_rad, socket_depth) {
square([2 * socket_rad, socket_width], center = true);
square([socket_width, 2 * socket_rad], center = true);
}
translate([0, -socket_depth + eps])
square([socket_rad + 0.1, 10]);
}
translate_z(-socket_depth)
linear_extrude(socket_depth)
difference() {
circle(socket_rad + 0.1);
square([2 * socket_rad, socket_width], center = true);
square([socket_width, 2 * socket_rad], center = true);
}
}
shaft(socket_depth);
}
if(head_type == hs_cs_cap) {
head_height = head_rad;
color(colour) {
rotate_extrude()
difference() {
polygon([[0, 0], [head_rad, 0], [0, -head_height]]);
color(colour)
cs_head(socket_rad, socket_depth)
circle(socket_rad, $fn = 6);
translate([0, -socket_depth + eps])
square([socket_rad, 10]);
}
translate_z(-socket_depth)
linear_extrude(socket_depth)
difference() {
circle(socket_rad + 0.1);
circle(socket_rad, $fn = 6);
}
}
shaft(socket_depth);
}
}