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https://github.com/BelfrySCAD/BOSL2.git
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Torx sizing tweaks.
This commit is contained in:
Garth Minette
parent
60b84331e9
commit
4aee209114
3 changed files with 64 additions and 161 deletions
176
screw_drive.scad
176
screw_drive.scad
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@ -143,8 +143,8 @@ function phillips_diam(size, depth) =
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// Examples:
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// Examples:
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// torx_mask(size=30, l=10, $fa=1, $fs=1);
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// torx_mask(size=30, l=10, $fa=1, $fs=1);
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module torx_mask(size, l=5, center, anchor, spin=0, orient=UP) {
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module torx_mask(size, l=5, center, anchor, spin=0, orient=UP) {
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anchor = get_anchor(anchor, center, BOT, BOT);
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od = torx_diam(size);
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od = torx_diam(size);
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anchor = get_anchor(anchor, center, BOT, BOT);
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attachable(anchor,spin,orient, d=od, l=l) {
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attachable(anchor,spin,orient, d=od, l=l) {
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linear_extrude(height=l, convexity=4, center=true) {
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linear_extrude(height=l, convexity=4, center=true) {
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torx_mask2d(size);
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torx_mask2d(size);
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@ -165,10 +165,11 @@ module torx_mask(size, l=5, center, anchor, spin=0, orient=UP) {
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// torx_mask2d(size=30, $fa=1, $fs=1);
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// torx_mask2d(size=30, $fa=1, $fs=1);
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module torx_mask2d(size) {
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module torx_mask2d(size) {
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no_children($children);
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no_children($children);
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od = torx_diam(size);
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info = torx_info(size);
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id = _torx_inner_diam(size);
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od = info[0];
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tip = _torx_tip_radius(size);
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id = info[1];
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rounding = _torx_rounding_radius(size);
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tip = info[3];
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rounding = info[4];
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base = od - 2*tip;
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base = od - 2*tip;
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$fn = quantup(segs(od/2),12);
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$fn = quantup(segs(od/2),12);
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difference() {
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difference() {
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@ -195,56 +196,61 @@ module torx_mask2d(size) {
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}
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}
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// Function: torx_info()
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// Usage:
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// info = torx_info(size);
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// Description:
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// Get the typical dimensional info for a given Torx size.
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// Returns a list containing, in order:
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// - Outer Diameter
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// - Inner Diameter
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// - Drive Hole Depth
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// - External Tip Rounding Radius
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// - Inner Rounding Radius
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// Arguments:
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// size = Torx size.
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function torx_info(size) =
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let(
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info_arr = [
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//T# OD ID H Re Ri
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[ 1, [ 0.90, 0.65, 1.19, 0.059, 0.201]],
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[ 2, [ 1.00, 0.73, 1.70, 0.069, 0.224]],
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[ 3, [ 1.20, 0.87, 1.70, 0.081, 0.266]],
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[ 4, [ 1.35, 0.98, 1.70, 0.090, 0.308]],
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[ 5, [ 1.48, 1.08, 1.70, 0.109, 0.330]],
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[ 6, [ 1.75, 1.27, 1.87, 0.132, 0.383]],
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[ 7, [ 2.08, 1.50, 3.10, 0.161, 0.446]],
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[ 8, [ 2.40, 1.75, 3.10, 0.190, 0.510]],
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[ 9, [ 2.58, 1.87, 3.35, 0.207, 0.554]],
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[ 10, [ 2.80, 2.05, 3.61, 0.229, 0.598]],
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[ 15, [ 3.35, 2.40, 3.86, 0.267, 0.716]],
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[ 20, [ 3.95, 2.85, 4.12, 0.305, 0.859]],
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[ 25, [ 4.50, 3.25, 4.50, 0.375, 0.920]],
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[ 27, [ 5.07, 3.65, 4.75, 0.390, 1.108]],
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[ 30, [ 5.60, 4.05, 5.00, 0.451, 1.194]],
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[ 40, [ 6.75, 4.85, 5.64, 0.546, 1.428]],
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[ 45, [ 7.93, 5.64, 6.27, 0.574, 1.796]],
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[ 50, [ 8.95, 6.45, 6.53, 0.775, 1.816]],
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[ 55, [ 11.35, 8.05, 6.78, 0.867, 2.667]],
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[ 60, [ 13.45, 9.60, 8.22, 1.067, 2.883]],
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[ 70, [ 15.70, 11.20, 9.01, 1.194, 3.477]],
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[ 80, [ 17.75, 12.80, 9.95, 1.526, 3.627]],
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[ 90, [ 20.20, 14.40, 10.61, 1.530, 4.468]],
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[100, [ 22.40, 16.00, 11.40, 1.720, 4.925]],
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],
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found = [for(info=info_arr) if(info[0]==size) info[1]]
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)
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assert(found, "Unsupported Torx size.")
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found[0];
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// Function: torx_diam()
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// Function: torx_diam()
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// Usage:
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// Usage:
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// diam = torx_diam(size);
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// diam = torx_diam(size);
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// Description: Get the typical outer diameter of Torx profile.
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// Description: Get the typical outer diameter of Torx profile.
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// Arguments:
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// Arguments:
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// size = Torx size.
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// size = Torx size.
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function torx_diam(size) = lookup(size, [
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function torx_diam(size) = torx_info(size)[0];
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[ 6, 1.75],
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[ 8, 2.40],
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[ 10, 2.80],
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[ 15, 3.35],
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[ 20, 3.95],
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[ 25, 4.50],
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[ 30, 5.60],
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[ 40, 6.75],
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[ 45, 7.93],
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[ 50, 8.95],
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[ 55, 11.35],
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[ 60, 13.45],
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[ 70, 15.70],
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[ 80, 17.75],
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[ 90, 20.20],
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[100, 22.40]
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]);
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/// Internal Function: torx_inner_diam()
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/// Usage:
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/// diam = torx_inner_diam(size);
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/// Description: Get typical inner diameter of Torx profile.
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/// Arguments:
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/// size = Torx size.
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function _torx_inner_diam(size) = lookup(size, [
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[ 6, 1.27],
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[ 8, 1.75],
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[ 10, 2.05],
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[ 15, 2.40],
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[ 20, 2.85],
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[ 25, 3.25],
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[ 30, 4.05],
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[ 40, 4.85],
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[ 45, 5.64],
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[ 50, 6.45],
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[ 55, 8.05],
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[ 60, 9.60],
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[ 70, 11.20],
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[ 80, 12.80],
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[ 90, 14.40],
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[100, 16.00]
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]);
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// Function: torx_depth()
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// Function: torx_depth()
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@ -253,77 +259,7 @@ function _torx_inner_diam(size) = lookup(size, [
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// Description: Gets typical drive hole depth.
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// Description: Gets typical drive hole depth.
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// Arguments:
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// Arguments:
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// size = Torx size.
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// size = Torx size.
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function torx_depth(size) = lookup(size, [
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function torx_depth(size) = torx_info(size)[2];
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[ 6, 1.82],
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[ 8, 3.05],
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[ 10, 3.56],
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[ 15, 3.81],
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[ 20, 4.07],
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[ 25, 4.45],
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[ 30, 4.95],
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[ 40, 5.59],
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[ 45, 6.22],
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[ 50, 6.48],
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[ 55, 6.73],
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[ 60, 8.17],
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[ 70, 8.96],
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[ 80, 9.90],
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[ 90, 10.56],
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[100, 11.35]
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]);
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/// Internal Function: torx_tip_radius()
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/// Usage:
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/// rad = torx_tip_radius(size);
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/// Description: Gets minor rounding radius of Torx profile.
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/// Arguments:
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/// size = Torx size.
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function _torx_tip_radius(size) = lookup(size, [
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[ 6, 0.132],
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[ 8, 0.190],
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[ 10, 0.229],
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[ 15, 0.267],
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[ 20, 0.305],
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[ 25, 0.375],
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[ 30, 0.451],
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[ 40, 0.546],
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[ 45, 0.574],
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[ 50, 0.775],
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[ 55, 0.867],
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[ 60, 1.067],
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[ 70, 1.194],
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[ 80, 1.526],
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[ 90, 1.530],
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[100, 1.720]
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]);
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/// Internal Function: torx_rounding_radius()
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/// Usage:
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/// rad = torx_rounding_radius(size);
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/// Description: Gets major rounding radius of Torx profile.
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/// Arguments:
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/// size = Torx size.
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function _torx_rounding_radius(size) = lookup(size, [
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[ 6, 0.383],
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[ 8, 0.510],
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[ 10, 0.598],
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[ 15, 0.716],
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[ 20, 0.859],
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[ 25, 0.920],
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[ 30, 1.194],
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[ 40, 1.428],
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[ 45, 1.796],
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[ 50, 1.816],
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[ 55, 2.667],
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[ 60, 2.883],
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[ 70, 3.477],
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[ 80, 3.627],
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[ 90, 4.468],
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[100, 4.925]
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]);
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@ -53,8 +53,8 @@ test_arc();
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module test_dashed_stroke() {
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module test_dashed_stroke() {
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segs = dashed_stroke([[0,0],[10,0]], dashpat=[3,2], closed=false);
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segs = dashed_stroke([[0,0],[15,0]], dashpat=[3,2], closed=false);
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assert_equal(segs,[[[0,0],[3,0]], [[5,0],[8,0]]]);
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assert_approx(segs,[[[0,0],[2.5,0]],[[4+1/6,0],[6+2/3,0]],[[8+1/3,0],[10+5/6,0]],[[12.5,0],[15,0]]]);
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}
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}
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test_dashed_stroke();
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test_dashed_stroke();
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@ -13,49 +13,16 @@ module test_torx_diam() {
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test_torx_diam();
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test_torx_diam();
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module test_torx_inner_diam() {
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assert_approx(_torx_inner_diam(10), 2.05);
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assert_approx(_torx_inner_diam(15), 2.40);
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assert_approx(_torx_inner_diam(20), 2.85);
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assert_approx(_torx_inner_diam(25), 3.25);
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assert_approx(_torx_inner_diam(30), 4.05);
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assert_approx(_torx_inner_diam(40), 4.85);
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}
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test_torx_inner_diam();
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module test_torx_depth() {
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module test_torx_depth() {
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assert_approx(torx_depth(10), 3.56);
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assert_approx(torx_depth(10), 3.61);
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assert_approx(torx_depth(15), 3.81);
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assert_approx(torx_depth(15), 3.86);
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assert_approx(torx_depth(20), 4.07);
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assert_approx(torx_depth(20), 4.12);
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assert_approx(torx_depth(25), 4.45);
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assert_approx(torx_depth(25), 4.50);
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assert_approx(torx_depth(30), 4.95);
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assert_approx(torx_depth(30), 5,00);
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assert_approx(torx_depth(40), 5.59);
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assert_approx(torx_depth(40), 5.64);
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}
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}
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test_torx_depth();
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test_torx_depth();
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module test_torx_tip_radius() {
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assert_approx(_torx_tip_radius(10), 0.229);
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assert_approx(_torx_tip_radius(15), 0.267);
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assert_approx(_torx_tip_radius(20), 0.305);
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assert_approx(_torx_tip_radius(25), 0.375);
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assert_approx(_torx_tip_radius(30), 0.451);
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assert_approx(_torx_tip_radius(40), 0.546);
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}
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test_torx_tip_radius();
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module test_torx_rounding_radius() {
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assert_approx(_torx_rounding_radius(10), 0.598);
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assert_approx(_torx_rounding_radius(15), 0.716);
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assert_approx(_torx_rounding_radius(20), 0.859);
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assert_approx(_torx_rounding_radius(25), 0.920);
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assert_approx(_torx_rounding_radius(30), 1.194);
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assert_approx(_torx_rounding_radius(40), 1.428);
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}
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test_torx_rounding_radius();
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// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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