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add metric nut table and proper nut beveling in threading.scad

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This commit is contained in:
Adrian Mariano
2022-10-11 23:30:00 -04:00
parent 0b9a09fc9b
commit ebf4c37abd
2 changed files with 254 additions and 102 deletions
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97
threading.scad
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@@ -128,11 +128,11 @@ module threaded_rod(
// Module: threaded_nut()
// Usage:
// threaded_nut(od, id, h, pitch,...) [ATTACHMENTS];
// threaded_nut(nutwidth, id, h, pitch,...) [ATTACHMENTS];
// Description:
// Constructs a hex nut or square nut for an ISO (metric) or UTS (English) threaded rod.
// Arguments:
// od = diameter of the nut.
// nutwidth = flat to flat width of nut
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// pitch = Length between threads.
@@ -151,12 +151,12 @@ module threaded_rod(
// threaded_nut(od=16, id=8, h=8, pitch=1.25, $slop=0.05, $fa=1, $fs=1);
// threaded_nut(od=16, id=8, h=8, pitch=1.25, left_handed=true, bevel=true, $slop=0.1, $fa=1, $fs=1);
function threaded_nut(
od, id, h,
nutwidth, id, h,
pitch, starts=1, shape, left_handed=false, bevel, bevel1, bevel2, id1,id2,
anchor, spin, orient
)=no_function("threaded_nut");
module threaded_nut(
od, id, h,
nutwidth, id, h,
pitch, starts=1, shape="hex", left_handed=false, bevel, bevel1, bevel2, id1,id2,
anchor, spin, orient
) {
@@ -184,7 +184,7 @@ module threaded_nut(
[ 6/16, -depth/pitch]
];
generic_threaded_nut(
od=od,
nutwidth=nutwidth,
id=basic ? id : id[2], id1=id1, id2=id2,
h=h,
pitch=pitch,
@@ -323,14 +323,14 @@ module trapezoidal_threaded_rod(
// Module: trapezoidal_threaded_nut()
// Usage:
// trapezoidal_threaded_nut(od, id, h, pitch, [thread_angle], [thread_depth], ...) [ATTACHMENTS];
// trapezoidal_threaded_nut(nutwidth, id, h, pitch, [thread_angle], [thread_depth], ...) [ATTACHMENTS];
// Description:
// Constructs a hex nut or square nut for a symmetric trapzoidal threaded rod.
// By default produces the nominal dimensions
// for metric trapezoidal threads: a thread angle of 30 degrees and a depth set to half the pitch.
// You can also specify your own trapezoid parameters. For ACME threads see acme_threaded_nut().
// Arguments:
// od = diameter of the nut.
// nutwidth = flat to flat width of nut
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// pitch = Thread spacing.
@@ -348,11 +348,11 @@ module trapezoidal_threaded_rod(
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
// $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
// Examples(Med):
// trapezoidal_threaded_nut(od=16, id=8, h=8, pitch=2, $slop=0.1, anchor=UP);
// trapezoidal_threaded_nut(od=16, id=8, h=8, pitch=2, bevel=true, $slop=0.05, anchor=UP);
// trapezoidal_threaded_nut(od=17.4, id=10, h=10, pitch=2, $slop=0.1, left_handed=true);
// trapezoidal_threaded_nut(od=17.4, id=10, h=10, pitch=2, starts=3, $fa=1, $fs=1, $slop=0.15);
function trapezoidal_threaded_rod(
// trapezoidal_threaded_nut(nutwidth=16, id=8, h=8, pitch=2, $slop=0.1, anchor=UP);
// trapezoidal_threaded_nut(nutwidth=16, id=8, h=8, pitch=2, bevel=true, $slop=0.05, anchor=UP);
// trapezoidal_threaded_nut(nutwidth=17.4, id=10, h=10, pitch=2, $slop=0.1, left_handed=true);
// trapezoidal_threaded_nut(nutwidth=17.4, id=10, h=10, pitch=2, starts=3, $fa=1, $fs=1, $slop=0.15);
function trapezoidal_threaded_nut(
d, l, pitch,
thread_angle=30,
thread_depth=undef, shape,
@@ -364,7 +364,7 @@ function trapezoidal_threaded_rod(
center, anchor, spin, orient
) = no_function("trapezoidal_threaded_nut");
module trapezoidal_threaded_nut(
od,
nutwidth,
id,
h,
pitch,
@@ -389,7 +389,7 @@ module trapezoidal_threaded_nut(
[ z1, 0],
[ z2, rr1],
];
generic_threaded_nut(od=od,id=id,h=h,pitch=pitch,profile=profile,id1=id1,id2=id2,
generic_threaded_nut(nutwidth=nutwidth,id=id,h=h,pitch=pitch,profile=profile,id1=id1,id2=id2,
shape=shape,left_handed=left_handed,bevel=bevel,bevel1=bevel1,bevel2=bevel2,starts=starts,
anchor=anchor,spin=spin,orient=orient)
children();
@@ -465,11 +465,11 @@ module acme_threaded_rod(
// Module: acme_threaded_nut()
// Usage:
// acme_threaded_nut(od, id, h, tpi|pitch=, ...) [ATTACHMENTS];
// acme_threaded_nut(nutwidth, id, h, tpi|pitch=, [shape=], ...) [ATTACHMENTS];
// Description:
// Constructs a hex nut for an ACME threaded screw rod.
// Constructs a hexagonal or square nut for an ACME threaded screw rod.
// Arguments:
// od = diameter of the nut.
// nutwidth = flat to flat width of nut.
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// tpi = threads per inch
@@ -486,17 +486,17 @@ module acme_threaded_rod(
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
// $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
// Examples(Med):
// acme_threaded_nut(od=16, id=3/8*INCH, h=8, tpi=8, $slop=0.05);
// acme_threaded_nut(od=16, id=1/2*INCH, h=10, tpi=12, starts=3, $slop=0.1, $fa=1, $fs=1);
// acme_threaded_nut(nutwidth=16, id=3/8*INCH, h=8, tpi=8, $slop=0.05);
// acme_threaded_nut(nutwidth=16, id=1/2*INCH, h=10, tpi=12, starts=3, $slop=0.1, $fa=1, $fs=1);
function acme_threaded_nut(
od, id, h, tpi, pitch,
nutwidth, id, h, tpi, pitch,
starts=1,
left_handed=false,shape,
bevel,bevel1,bevel2,
anchor, spin, orient
) = no_function("acme_threaded_nut");
module acme_threaded_nut(
od, id, h, tpi, pitch,
nutwidth, id, h, tpi, pitch,
starts=1,
left_handed=false,shape="hex",
bevel,bevel1,bevel2,
@@ -506,7 +506,7 @@ module acme_threaded_nut(
pitch = is_undef(pitch) ? INCH/tpi : pitch;
dummy2=assert(is_num(pitch) && pitch>0);
trapezoidal_threaded_nut(
od=od, id=id, h=h, pitch=pitch,
nutwidth=nutwidth, id=id, h=h, pitch=pitch,
thread_depth = pitch/2,
thread_angle=29,shape=shape,
left_handed=left_handed,
@@ -725,11 +725,11 @@ module buttress_threaded_rod(
// Module: buttress_threaded_nut()
// Usage:
// buttress_threaded_nut(od, id, h, pitch, ...) [ATTACHMENTS];
// buttress_threaded_nut(nutwidth, id, h, pitch, ...) [ATTACHMENTS];
// Description:
// Constructs a hex nut for a simple buttress threaded screw rod.
// Constructs a hexagonal or square nut for a simple buttress threaded screw rod.
// Arguments:
// od = diameter of the nut.
// nutwidth = diameter of the nut.
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// pitch = Thread spacing.
@@ -745,15 +745,15 @@ module buttress_threaded_rod(
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
// $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
// Examples(Med):
// buttress_threaded_nut(od=16, id=8, h=8, pitch=1.25, left_handed=true, $slop=0.05, $fa=1, $fs=1);
// buttress_threaded_nut(nutwidth=16, id=8, h=8, pitch=1.25, left_handed=true, $slop=0.05, $fa=1, $fs=1);
function buttress_threaded_nut(
od=16, id=10, h=10,
nutwidth=16, id=10, h=10,
pitch=2, shape, left_handed=false,
bevel,bevel1,bevel2,starts,
anchor, spin, orient
) = no_function("buttress_threaded_nut");
module buttress_threaded_nut(
od=16, id=10, h=10,
nutwidth=16, id=10, h=10,
pitch=2, shape="hex", left_handed=false,
bevel,bevel1,bevel2,starts=1,
anchor, spin, orient
@@ -767,7 +767,7 @@ module buttress_threaded_nut(
[ 1/ 2, -0.77],
];
generic_threaded_nut(
od=od, id=id, h=h,
nutwidth=nutwidth, id=id, h=h,
pitch=pitch,
profile=profile,
shape=shape,
@@ -857,13 +857,14 @@ module square_threaded_rod(
// Usage:
// square_threaded_nut(od, id, h, pitch, ...) [ATTACHMENTS];
// Description:
// Constructs a hex nut for a square profile threaded screw rod.
// Constructs a hexagonal or square nut for a square profile threaded screw rod.
// Arguments:
// od = diameter of the nut.
// nutwidth = diameter of the nut.
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// pitch = Length between threads.
// ---
// shape = specifies shape of nut, either "hex" or "square". Default: "hex"
// left_handed = if true, create left-handed threads. Default = false
// starts = The number of lead starts. Default = 1
// bevel = if true, bevel the thread ends. Default: false
@@ -874,10 +875,11 @@ module square_threaded_rod(
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
// $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
// Examples(Med):
// square_threaded_nut(od=16, id=10, h=10, pitch=2, starts=2, $slop=0.1, $fn=32);
// square_threaded_nut(nutwidth=16, id=10, h=10, pitch=2, starts=2, $slop=0.1, $fn=32);
function square_threaded_nut(
od, id, h,
pitch,
shape=shape,
left_handed=false,
bevel,bevel1,bevel2,
starts=1,
@@ -893,7 +895,7 @@ module square_threaded_nut(
) {
assert(is_num(pitch) && pitch>0)
trapezoidal_threaded_nut(
od=od, id=id, h=h, pitch=pitch,
nutwidth=nutwidth, id=id, h=h, pitch=pitch,
thread_angle=0,
left_handed=left_handed,
bevel=bevel,bevel1=bevel1,bevel2=bevel2,
@@ -1213,17 +1215,18 @@ module generic_threaded_rod(
// Module: generic_threaded_nut()
// Usage:
// generic_threaded_nut(od, id, h, pitch, profile, [$slop], ...) [ATTACHMENTS];
// generic_threaded_nut(nutwidth, id, h, pitch, profile, [$slop], ...) [ATTACHMENTS];
// Description:
// Constructs a hexagonal or square nut for an generic threaded rod using a user-supplied thread profile.
// See generic_threaded_rod for details on the profile specification.
// Arguments:
// od = diameter of the nut.
// nutwidth = outer dimension of nut from flat to flat.
// id = diameter of threaded rod to screw onto.
// h = height/thickness of nut.
// pitch = Thread spacing.
// profile = Thread profile.
// ---
// shape = specifies shape of nut, either "hex" or "square". Default: "hex"
// left_handed = if true, create left-handed threads. Default = false
// starts = The number of lead starts. Default = 1
// bevel = if true, bevel the thread ends. Default: false
@@ -1236,7 +1239,7 @@ module generic_threaded_rod(
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
// $slop = The printer-specific slop value, which adds clearance (`4*$slop`) to internal threads.
function generic_threaded_nut(
od,
nutwidth,
id,
h,
pitch,
@@ -1244,12 +1247,12 @@ function generic_threaded_nut(
shape,
left_handed=false,
starts=1,
bevel,bevel1,bevel2,bevang=30,
bevel,bevel1,bevel2,bevang=15,
id1,id2,
anchor, spin, orient
) = no_function("generic_threaded_nut");
module generic_threaded_nut(
od,
nutwidth,
id,
h,
pitch,
@@ -1257,7 +1260,7 @@ module generic_threaded_nut(
shape="hex",
left_handed=false,
starts=1,
bevel,bevel1,bevel2,
bevel,bevel1,bevel2,bevang=15,
id1,id2,
anchor, spin, orient
) {
@@ -1273,12 +1276,18 @@ module generic_threaded_nut(
bevel2 = first_defined([bevel2,bevel,false]);
dummy1 = assert(is_num(pitch) && pitch>0);
depth = -pitch*min(column(profile,1));
attachable(anchor,spin,orient, size=[od/cos(30),od,h]) {
bevel_d=.975;
vnf = linear_sweep(hexagon(id=nutwidth), height=h, center=true);
attachable(anchor,spin,orient, size=shape=="square" ? [nutwidth,nutwidth,h] : undef, vnf=shape=="hex" ? vnf : undef) {
difference() {
if (shape=="hex")
cyl(d=od/cos(30), h=h, center=true, $fn=6,chamfer1=bevel1?depth:undef,chamfer2=bevel2?depth:undef);
else
cuboid([od,od,h]);
intersection(){
if (shape=="hex")
vnf_polyhedron(vnf);
else
cuboid([nutwidth,nutwidth,h]);
if (bevel2) cyl(h=h+.01, d2=nutwidth*bevel_d,d1=nutwidth*bevel_d+h/tan(bevang), $fn=64);
if (bevel1) down(.01) cyl(h=h+.01, d1=nutwidth*bevel_d,d2=nutwidth*bevel_d+h/tan(bevang), $fn=64);
}
generic_threaded_rod(
d1=full_id1,d2=full_id2,
l=h+extra,