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Adrian Mariano 2021-08-26 19:27:36 -04:00
parent c0bf42836d
commit bfaf6990bc
1 changed files with 8 additions and 4 deletions
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12
threading.scad
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@ -927,9 +927,10 @@ module generic_threaded_rod(
[+twist/2+0.00001, 0], [+twist/2+0.00001, 0],
[+twist, 0], [+twist, 0],
]; ];
start_steps = floor(sides / starts); start_steps = sides / starts;
thread_verts = [ thread_verts = [
// Outer loop constructs a vertical column of the screw at each angle // Outer loop constructs a vertical column of the screw at each angle
// covering 1/starts * 360 degrees of the cylinder.
for (step = [0:1:start_steps]) let( for (step = [0:1:start_steps]) let(
ang = 360 * step/sides, ang = 360 * step/sides,
dz = step / start_steps, // z offset for threads at this angle dz = step / start_steps, // z offset for threads at this angle
@ -998,7 +999,6 @@ module generic_threaded_rod(
down(l/2) cuboid([2*rmax+1,2*rmax+1, maxlen], anchor=TOP); down(l/2) cuboid([2*rmax+1,2*rmax+1, maxlen], anchor=TOP);
if (!bevel2) if (!bevel2)
up(l/2) cuboid([2*rmax+1,2*rmax+1, maxlen], anchor=BOTTOM); up(l/2) cuboid([2*rmax+1,2*rmax+1, maxlen], anchor=BOTTOM);
} }
} }
@ -1091,13 +1091,17 @@ module generic_threaded_nut(
// Usage: // Usage:
// thread_helix(d, pitch, [thread_depth], [flank_angle], [twist], [profile=], [left_handed=], [higbee=], [internal=]); // thread_helix(d, pitch, [thread_depth], [flank_angle], [twist], [profile=], [left_handed=], [higbee=], [internal=]);
// Description: // Description:
// Creates a right-handed helical thread with optional end tapering. You can specify a thread_depth and flank_angle, in which // Creates a right-handed helical thread with optional end tapering. Unlike generic_threaded_rod, this module just generates the thread, and
// you specify the angle of thread you want, which makes it easy to put complete threads onto a longer shaft. It also makes a more finely
// divided taper at the thread ends. However, if you use it for large length of thread it is much slower than generic_threaded_rod.
// .
// You can specify a thread_depth and flank_angle, in which
// case you get a symmetric trapezoidal thread, whose base is at the diameter (so the total diameter will be d + thread_depth). // case you get a symmetric trapezoidal thread, whose base is at the diameter (so the total diameter will be d + thread_depth).
// Atlernatively you can give a profile, following the same rules as for general_threaded_rod. // Atlernatively you can give a profile, following the same rules as for general_threaded_rod.
// The Y=0 point will align with the specified diameter, and the profile should // The Y=0 point will align with the specified diameter, and the profile should
// range in X from -1/2 to 1/2. You cannot specify both the profile and the thread_depth or flank_angle. // range in X from -1/2 to 1/2. You cannot specify both the profile and the thread_depth or flank_angle.
// . // .
// Higbee specifies tapering applied to the ends of the extrusion and is given as the linear distance // Higbee specifies tapering applied to the ends of the threads and is given as the linear distance
// over which to taper. // over which to taper.
// Arguments: // Arguments:
// d = Inside base diameter of threads. Default: 10 // d = Inside base diameter of threads. Default: 10