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Clean up phillips_mask to just produce driver tip and not shaft

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Adrian Mariano 2021-09-22 22:02:29 -04:00
parent 880c245d3f
commit a2c5e49e2d
3 changed files with 36 additions and 40 deletions
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2
metric_screws.scad
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@ -606,7 +606,7 @@ module metric_bolt(
// Phillips drive hole
if (headtype != "socket" && phillips != undef) {
down(headtype != "hex"? H/6 : 0) {
phillips_mask(size=phillips, shaft=D);
phillips_mask(size=phillips); //, shaft=D);
}
}

72
screw_drive.scad
View file

@ -10,45 +10,45 @@
// Section: Phillips Drive
// Module: phillips_mask()
// Description: Creates a mask for creating a Phillips drive recess given the Phillips size.
// Description:
// Creates a mask for creating a Phillips drive recess given the Phillips size. Each mask can
// be lowered to different depths to create different sizes of recess.
// Arguments:
// size = The size of the bit as a number or string. "#0", "#1", "#2", "#3", or "#4"
// shaft = The diameter of the drive bit's shaft.
// l = The length of the drive bit.
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
// Example:
// xdistribute(10) {
// phillips_mask(size="#1", l=20);
// phillips_mask(size="#2", l=20);
// phillips_mask(size=3, l=20);
// phillips_mask(size=4, l=20);
// phillips_mask(size="#1");
// phillips_mask(size="#2");
// phillips_mask(size=3);
// phillips_mask(size=4);
// }
// Specs for phillips recess here:
// https://www.fasteners.eu/tech-info/ISO/4757/
module phillips_mask(size="#2", shaft, l=20, $fn=36, anchor=BOTTOM, spin=0, orient=UP) {
_phillips_shaft = [3,4.5,6,8,10];
_ph_bot_angle = 28.0;
_ph_side_angle = 26.5;
module phillips_mask(size="#2", $fn=36, anchor=BOTTOM, spin=0, orient=UP) {
assert(in_list(size,["#0","#1","#2","#3","#4",0,1,2,3,4]));
num = is_num(size) ? size : ord(size[1]) - ord("0");
defshaft = [3,4.5,6,8,10][num];
shaft = first_defined([defshaft,shaft,defshaft]);
shaft = _phillips_shaft[num];
b = [0.61, 0.97, 1.47, 2.41, 3.48][num];
e = [0.31, 0.435, 0.815, 2.005, 2.415][num];
// e = [0.31, 0.435, 0.815, 2.1505, 2.415][num];
g = [0.81, 1.27, 2.29, 3.81, 5.08][num];
//f = [0.33, 0.53, 0.70, 0.82, 1.23][num];
//r = [0.30, 0.50, 0.60, 0.80, 1.00][num];
alpha = [ 136, 138, 140, 146, 153][num];
beta = [7.00, 7.00, 5.75, 5.75, 7.00][num];
gamma = 92.0;
ang1 = 28.0;
ang2 = 26.5;
h1 = adj_ang_to_opp(g/2, ang1); // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-ang2); // height of larger cone
h3 = adj_ang_to_opp(b/2, ang1); // height where cutout starts
h1 = adj_ang_to_opp(g/2, _ph_bot_angle); // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-_ph_side_angle); // height of larger cone
l = h1+h2;
h3 = adj_ang_to_opp(b/2, _ph_bot_angle); // height where cutout starts
p0 = [0,0];
p1 = [adj_ang_to_opp(e/2, 90-alpha/2), -e/2];
p2 = p1 + [adj_ang_to_opp((shaft-e)/2, 90-gamma/2),-(shaft-e)/2];
@ -56,12 +56,13 @@ module phillips_mask(size="#2", shaft, l=20, $fn=36, anchor=BOTTOM, spin=0, orie
down(l/2) {
difference() {
rotate_extrude()
polygon([[0,0],[g/2,h1],[shaft/2,h1+h2],[shaft/2,l],[0,l]]);
polygon([[0,0],[g/2,h1],[shaft/2,l],[0,l]]);
zrot(45)
zrot_copies(n=4, r=b/2) {
up(h3) {
yrot(beta) {
linear_extrude(height=(h1+h2)*20, convexity=4, center=false) {
yrot(beta) {
down(1)
linear_extrude(height=l+2, convexity=4, center=false) {
path = [p0, p1, p2, [p2.x,-p2.y], [p1.x,-p1.y]];
polygon(path);
}
@ -91,21 +92,21 @@ function phillips_depth(size, d) =
num = is_num(size) ? size : ord(size[1]) - ord("0"),
shaft = [3,4.5,6,8,10][num],
g = [0.81, 1.27, 2.29, 3.81, 5.08][num],
ang1 = 28.0,
ang2 = 26.5,
h1 = adj_ang_to_opp(g/2, ang1), // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-ang2) // height of larger cone
_ph_bot_angle = 28.0,
_ph_side_angle = 26.5,
h1 = adj_ang_to_opp(g/2, _ph_bot_angle), // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-_ph_side_angle) // height of larger cone
)
d>shaft ? undef :
d<g ? undef :
(d-g) / 2 / tan(ang2) + h1;
d>=shaft || d<g ? undef :
(d-g) / 2 / tan(_ph_side_angle) + h1;
// Function: phillips_diam()
// Usage:
// diam = phillips_diam(size, depth);
// Description:
// Returns the diameter at the top of the Phillips recess when constructed at the specified depth.
// Returns the diameter at the top of the Phillips recess when constructed at the specified depth,
// or undef if that depth is not valid.
// Arguments:
// size = size as number or text string like "#2"
// depth = depth of recess to find the diameter of
@ -113,18 +114,13 @@ function phillips_diam(size, depth) =
assert(in_list(size,["#0","#1","#2","#3","#4",0,1,2,3,4]))
let(
num = is_num(size) ? size : ord(size[1]) - ord("0"),
shaft = [3,4.5,6,8,10][num],
ang1 = 28.0,
ang2 = 26.5,
shaft = _phillips_shaft[num],
g = [0.81, 1.27, 2.29, 3.81, 5.08][num],
h1 = adj_ang_to_opp(g/2, ang1), // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-ang2) // height of larger cone
h1 = adj_ang_to_opp(g/2, _ph_bot_angle), // height of the small conical tip
h2 = adj_ang_to_opp((shaft-g)/2, 90-_ph_side_angle) // height of larger cone
)
depth<h1 ? undef :
depth>h1+h2 ? shaft :
2 * tan(ang2)*(depth-h1) + g;
depth<h1 || depth>= h1+h2 ? undef :
2 * tan(_ph_side_angle)*(depth-h1) + g;

2
screws.scad
View file

@ -1421,7 +1421,7 @@ http://files.engineering.com/getfile.aspx?folder=76fb0d5e-1fff-4c49-87a5-0597947
// How do you insert a threaded hole into a model?
// Default nut thickness
//
// JIS:
// JIS
//https://www.garagejournal.com/forum/media/jis-b-4633-vs-iso-8764-1-din-5260-ph.84492/
//square: