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Fixed interior/internal inconsistency. Added internal option to most threaded rods.
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Revar Desmera
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dc7a8a2203
commit
a38441a548
@ -16,7 +16,7 @@ include <BOSL2/paths.scad>
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// Module: thread_helix()
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// Usage:
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// thread_helix(base_d, pitch, thread_depth, thread_angle, twist, [profile], [left_handed], [higbee], [interior]);
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// thread_helix(base_d, pitch, thread_depth, thread_angle, twist, [profile], [left_handed], [higbee], [internal]);
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// Description:
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// Creates a helical thread with optional end tapering.
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// Arguments:
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@ -28,18 +28,18 @@ include <BOSL2/paths.scad>
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// profile = If a an asymmetrical thread profile is needed, it can be specified here.
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// left_handed = If true, thread has a left-handed winding.
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// higbee = Angle to taper thread ends by.
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// interior = If true, invert threads for interior threading.
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// internal = If true, invert threads for internal threading.
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
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// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
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module thread_helix(base_d, pitch, thread_depth=undef, thread_angle=15, twist=720, profile=undef, left_handed=false, higbee=60, interior=false, anchor=CENTER, spin=0, orient=UP)
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module thread_helix(base_d, pitch, thread_depth=undef, thread_angle=15, twist=720, profile=undef, left_handed=false, higbee=60, internal=false, anchor=CENTER, spin=0, orient=UP)
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{
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h = pitch*twist/360;
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r = base_d/2;
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dz = thread_depth/pitch * tan(thread_angle);
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cap = (1 - 2*dz)/2;
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profile = !is_undef(profile)? profile : (
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interior? [
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internal? [
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[thread_depth/pitch, -cap/2-dz],
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[0, -cap/2],
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[0, +cap/2],
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@ -53,12 +53,12 @@ module thread_helix(base_d, pitch, thread_depth=undef, thread_angle=15, twist=72
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);
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pline = scale_points(profile, [1,1,1]*pitch);
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dir = left_handed? -1 : 1;
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idir = interior? -1 : 1;
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idir = internal? -1 : 1;
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orient_and_anchor([2*r, 2*r, h], orient, anchor, spin=spin, chain=true) {
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difference() {
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extrude_2dpath_along_spiral(pline, h=h, r=base_d/2, twist=twist*dir, $fn=segs(base_d/2), anchor=CENTER);
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down(h/2) right(r) right(interior? thread_depth : 0) zrot(higbee*dir*idir) fwd(dir*pitch/2) cube([3*thread_depth/cos(higbee), pitch, pitch], center=true);
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up(h/2) zrot(twist*dir) right(r) right(interior? thread_depth : 0) zrot(-higbee*dir*idir) back(dir*pitch/2) cube([3*thread_depth/cos(higbee), pitch, pitch], center=true);
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down(h/2) right(r) right(internal? thread_depth : 0) zrot(higbee*dir*idir) fwd(dir*pitch/2) cube([3*thread_depth/cos(higbee), pitch, pitch], center=true);
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up(h/2) zrot(twist*dir) right(r) right(internal? thread_depth : 0) zrot(-higbee*dir*idir) back(dir*pitch/2) cube([3*thread_depth/cos(higbee), pitch, pitch], center=true);
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}
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children();
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}
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@ -564,6 +564,8 @@ module buttress_threaded_nut(
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// left_handed = if true, create left-handed threads. Default = false
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// bevel = if true, bevel the thread ends. Default: false
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// starts = The number of lead starts. Default = 1
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// internal = If true, this is a mask for making internal threads.
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// slop = printer slop calibration to allow for tight fitting of parts. default=0.2
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
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// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
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@ -577,6 +579,8 @@ module metric_trapezoidal_threaded_rod(
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left_handed=false,
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starts=1,
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bevel=false,
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internal=false,
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slop=undef,
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anchor=CENTER,
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spin=0,
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orient=UP
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@ -588,6 +592,8 @@ module metric_trapezoidal_threaded_rod(
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left_handed=left_handed,
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starts=starts,
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bevel=bevel,
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internal=internal,
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slop=slop,
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anchor=anchor,
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spin=spin,
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orient=orient
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@ -654,6 +660,8 @@ module metric_trapezoidal_threaded_nut(
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// starts = The number of lead starts. Default = 1
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// left_handed = if true, create left-handed threads. Default = false
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// bevel = if true, bevel the thread ends. Default: false
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// internal = If true, this is a mask for making internal threads.
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// slop = printer slop calibration to allow for tight fitting of parts. default=0.2
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
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// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
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@ -670,6 +678,8 @@ module acme_threaded_rod(
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starts=1,
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left_handed=false,
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bevel=false,
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internal=false,
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slop=undef,
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anchor=CENTER,
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spin=0,
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orient=UP
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@ -681,6 +691,8 @@ module acme_threaded_rod(
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starts=starts,
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left_handed=left_handed,
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bevel=bevel,
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internal=internal,
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slop=slop,
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anchor=anchor,
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spin=spin,
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orient=orient
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@ -749,6 +761,8 @@ module acme_threaded_nut(
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// left_handed = if true, create left-handed threads. Default = false
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// bevel = if true, bevel the thread ends. Default: false
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// starts = The number of lead starts. Default = 1
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// internal = If true, this is a mask for making internal threads.
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// slop = printer slop calibration to allow for tight fitting of parts. default=0.2
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#anchor). Default: `CENTER`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
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// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
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@ -762,6 +776,8 @@ module square_threaded_rod(
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left_handed=false,
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bevel=false,
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starts=1,
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internal=false,
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slop=undef,
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anchor=CENTER,
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spin=0,
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orient=UP
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@ -772,6 +788,8 @@ module square_threaded_rod(
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left_handed=left_handed,
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bevel=bevel,
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starts=starts,
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internal=internal,
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slop=slop,
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anchor=anchor,
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spin=spin,
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orient=orient
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@ -923,7 +941,7 @@ module pco1881_cap(wall=2, anchor=BOTTOM, spin=0, orient=UP)
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down(h/2) zrot(45) {
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tube(id=28.58, wall=wall, h=11.2+wall, anchor=BOTTOM);
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cylinder(d=w, h=wall, anchor=BOTTOM);
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up(wall+2) thread_helix(base_d=25.5, pitch=2.7, thread_depth=1.6, thread_angle=15, twist=650, higbee=45, interior=true, anchor=BOTTOM);
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up(wall+2) thread_helix(base_d=25.5, pitch=2.7, thread_depth=1.6, thread_angle=15, twist=650, higbee=45, internal=true, anchor=BOTTOM);
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}
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children();
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}
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