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add square nuts

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This commit is contained in:
Adrian Mariano 2022-10-04 22:37:40 -04:00
parent 0278196eeb
commit 42f705b38a
2 changed files with 27 additions and 15 deletions
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1
screws.scad
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@ -1422,6 +1422,7 @@ module nut(spec, shape, thickness, nutwidth, thread, tolerance, hole_oversize,
mean(struct_val(threadspec, "d_major"))], mean(struct_val(threadspec, "d_major"))],
pitch = struct_val(threadspec, "pitch"), pitch = struct_val(threadspec, "pitch"),
h=thickness, h=thickness,
shape=shape,
bevel=bevel, bevel=bevel,
anchor=anchor,spin=spin,orient=orient) children(); anchor=anchor,spin=spin,orient=orient) children();
} }

39
threading.scad
View file

@ -130,13 +130,14 @@ module threaded_rod(
// Usage: // Usage:
// threaded_nut(od, id, h, pitch,...) [ATTACHMENTS]; // threaded_nut(od, id, h, pitch,...) [ATTACHMENTS];
// Description: // Description:
// Constructs a hex nut for an ISO (metric) or UTS (English) threaded rod. // Constructs a hex nut or square nut for an ISO (metric) or UTS (English) threaded rod.
// Arguments: // Arguments:
// od = diameter of the nut. // od = diameter of the nut.
// id = diameter of threaded rod to screw onto. // id = diameter of threaded rod to screw onto.
// h = height/thickness of nut. // h = height/thickness of nut.
// pitch = Length between threads. // 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 // left_handed = if true, create left-handed threads. Default = false
// starts = The number of lead starts. Default: 1 // starts = The number of lead starts. Default: 1
// bevel = if true, bevel the thread ends. Default: false // bevel = if true, bevel the thread ends. Default: false
@ -151,12 +152,12 @@ module threaded_rod(
// threaded_nut(od=16, id=8, h=8, pitch=1.25, left_handed=true, bevel=true, $slop=0.1, $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( function threaded_nut(
od, id, h, od, id, h,
pitch, starts=1, left_handed=false, bevel, bevel1, bevel2, id1,id2, pitch, starts=1, shape, left_handed=false, bevel, bevel1, bevel2, id1,id2,
anchor, spin, orient anchor, spin, orient
)=no_function("threaded_nut"); )=no_function("threaded_nut");
module threaded_nut( module threaded_nut(
od, id, h, od, id, h,
pitch, starts=1, left_handed=false, bevel, bevel1, bevel2, id1,id2, pitch, starts=1, shape="hex", left_handed=false, bevel, bevel1, bevel2, id1,id2,
anchor, spin, orient anchor, spin, orient
) { ) {
dummy1= dummy1=
@ -187,7 +188,7 @@ module threaded_nut(
id=basic ? id : id[2], id1=id1, id2=id2, id=basic ? id : id[2], id1=id1, id2=id2,
h=h, h=h,
pitch=pitch, pitch=pitch,
profile=profile,starts=starts, profile=profile,starts=starts,shape=shape,
left_handed=left_handed, left_handed=left_handed,
bevel=bevel,bevel1=bevel1,bevel2=bevel2, bevel=bevel,bevel1=bevel1,bevel2=bevel2,
anchor=anchor, spin=spin, anchor=anchor, spin=spin,
@ -324,7 +325,7 @@ module trapezoidal_threaded_rod(
// Usage: // Usage:
// trapezoidal_threaded_nut(od, id, h, pitch, [thread_angle], [thread_depth], ...) [ATTACHMENTS]; // trapezoidal_threaded_nut(od, id, h, pitch, [thread_angle], [thread_depth], ...) [ATTACHMENTS];
// Description: // Description:
// Constructs a hex nut for a symmetric trapzoidal threaded rod. // Constructs a hex nut or square nut for a symmetric trapzoidal threaded rod.
// By default produces the nominal dimensions // By default produces the nominal dimensions
// for metric trapezoidal threads: a thread angle of 30 degrees and a depth set to half the pitch. // 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(). // You can also specify your own trapezoid parameters. For ACME threads see acme_threaded_nut().
@ -336,6 +337,7 @@ module trapezoidal_threaded_rod(
// thread_angle = Angle between two thread faces. Default: 30 // thread_angle = Angle between two thread faces. Default: 30
// thread_depth = Depth of the threads. Default: pitch/2 // thread_depth = Depth of the threads. Default: pitch/2
// --- // ---
// shape = specifies shape of nut, either "hex" or "square". Default: "hex"
// left_handed = if true, create left-handed threads. Default = false // left_handed = if true, create left-handed threads. Default = false
// starts = The number of lead starts. Default = 1 // starts = The number of lead starts. Default = 1
// bevel = if true, bevel the thread ends. Default: false // bevel = if true, bevel the thread ends. Default: false
@ -353,7 +355,7 @@ module trapezoidal_threaded_rod(
function trapezoidal_threaded_rod( function trapezoidal_threaded_rod(
d, l, pitch, d, l, pitch,
thread_angle=30, thread_angle=30,
thread_depth=undef, thread_depth=undef, shape,
left_handed=false, left_handed=false,
bevel,bevel1,bevel2, bevel,bevel1,bevel2,
starts=1, starts=1,
@ -367,7 +369,7 @@ module trapezoidal_threaded_nut(
h, h,
pitch, pitch,
thread_angle=30, thread_angle=30,
thread_depth, thread_depth, shape="hex",
left_handed=false, left_handed=false,
starts=1, starts=1,
bevel,bevel1,bevel2, bevel,bevel1,bevel2,
@ -388,7 +390,7 @@ module trapezoidal_threaded_nut(
[ z2, rr1], [ z2, rr1],
]; ];
generic_threaded_nut(od=od,id=id,h=h,pitch=pitch,profile=profile,id1=id1,id2=id2, generic_threaded_nut(od=od,id=id,h=h,pitch=pitch,profile=profile,id1=id1,id2=id2,
left_handed=left_handed,bevel=bevel,bevel1=bevel1,bevel2=bevel2,starts=starts, shape=shape,left_handed=left_handed,bevel=bevel,bevel1=bevel1,bevel2=bevel2,starts=starts,
anchor=anchor,spin=spin,orient=orient) anchor=anchor,spin=spin,orient=orient)
children(); children();
} }
@ -473,6 +475,7 @@ module acme_threaded_rod(
// tpi = threads per inch // tpi = threads per inch
// --- // ---
// pitch = Thread spacing (alternative to tpi) // pitch = Thread spacing (alternative to tpi)
// shape = specifies shape of nut, either "hex" or "square". Default: "hex"
// left_handed = if true, create left-handed threads. Default = false // left_handed = if true, create left-handed threads. Default = false
// starts = Number of lead starts. Default: 1 // starts = Number of lead starts. Default: 1
// bevel = if true, bevel the thread ends. Default: false // bevel = if true, bevel the thread ends. Default: false
@ -488,14 +491,14 @@ module acme_threaded_rod(
function acme_threaded_nut( function acme_threaded_nut(
od, id, h, tpi, pitch, od, id, h, tpi, pitch,
starts=1, starts=1,
left_handed=false, left_handed=false,shape,
bevel,bevel1,bevel2, bevel,bevel1,bevel2,
anchor, spin, orient anchor, spin, orient
) = no_function("acme_threaded_nut"); ) = no_function("acme_threaded_nut");
module acme_threaded_nut( module acme_threaded_nut(
od, id, h, tpi, pitch, od, id, h, tpi, pitch,
starts=1, starts=1,
left_handed=false, left_handed=false,shape="hex",
bevel,bevel1,bevel2, bevel,bevel1,bevel2,
anchor, spin, orient anchor, spin, orient
) { ) {
@ -505,7 +508,7 @@ module acme_threaded_nut(
trapezoidal_threaded_nut( trapezoidal_threaded_nut(
od=od, id=id, h=h, pitch=pitch, od=od, id=id, h=h, pitch=pitch,
thread_depth = pitch/2, thread_depth = pitch/2,
thread_angle=29, thread_angle=29,shape=shape,
left_handed=left_handed, left_handed=left_handed,
bevel=bevel,bevel1=bevel1,bevel2=bevel2, bevel=bevel,bevel1=bevel1,bevel2=bevel2,
starts=starts, starts=starts,
@ -731,6 +734,7 @@ module buttress_threaded_rod(
// h = height/thickness of nut. // h = height/thickness of nut.
// pitch = Thread spacing. // pitch = Thread spacing.
// --- // ---
// shape = specifies shape of nut, either "hex" or "square". Default: "hex"
// left_handed = if true, create left-handed threads. Default = false // left_handed = if true, create left-handed threads. Default = false
// starts = The number of lead starts. Default: 1 // starts = The number of lead starts. Default: 1
// bevel = if true, bevel the thread ends. Default: false // bevel = if true, bevel the thread ends. Default: false
@ -744,13 +748,13 @@ module buttress_threaded_rod(
// 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(od=16, id=8, h=8, pitch=1.25, left_handed=true, $slop=0.05, $fa=1, $fs=1);
function buttress_threaded_nut( function buttress_threaded_nut(
od=16, id=10, h=10, od=16, id=10, h=10,
pitch=2, left_handed=false, pitch=2, shape, left_handed=false,
bevel,bevel1,bevel2,starts, bevel,bevel1,bevel2,starts,
anchor, spin, orient anchor, spin, orient
) = no_function("buttress_threaded_nut"); ) = no_function("buttress_threaded_nut");
module buttress_threaded_nut( module buttress_threaded_nut(
od=16, id=10, h=10, od=16, id=10, h=10,
pitch=2, left_handed=false, pitch=2, shape="hex", left_handed=false,
bevel,bevel1,bevel2,starts=1, bevel,bevel1,bevel2,starts=1,
anchor, spin, orient anchor, spin, orient
) { ) {
@ -766,6 +770,7 @@ module buttress_threaded_nut(
od=od, id=id, h=h, od=od, id=id, h=h,
pitch=pitch, pitch=pitch,
profile=profile, profile=profile,
shape=shape,
left_handed=left_handed,starts=starts, left_handed=left_handed,starts=starts,
bevel=bevel,bevel1=bevel1,bevel2=bevel2, bevel=bevel,bevel1=bevel1,bevel2=bevel2,
anchor=anchor, spin=spin, anchor=anchor, spin=spin,
@ -1210,7 +1215,7 @@ module generic_threaded_rod(
// Usage: // Usage:
// generic_threaded_nut(od, id, h, pitch, profile, [$slop], ...) [ATTACHMENTS]; // generic_threaded_nut(od, id, h, pitch, profile, [$slop], ...) [ATTACHMENTS];
// Description: // Description:
// Constructs a hexagonal nut for an generic threaded rod using a user-supplied thread profile. // 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. // See generic_threaded_rod for details on the profile specification.
// Arguments: // Arguments:
// od = diameter of the nut. // od = diameter of the nut.
@ -1236,6 +1241,7 @@ function generic_threaded_nut(
h, h,
pitch, pitch,
profile, profile,
shape,
left_handed=false, left_handed=false,
starts=1, starts=1,
bevel,bevel1,bevel2,bevang=30, bevel,bevel1,bevel2,bevang=30,
@ -1248,12 +1254,14 @@ module generic_threaded_nut(
h, h,
pitch, pitch,
profile, profile,
shape="hex",
left_handed=false, left_handed=false,
starts=1, starts=1,
bevel,bevel1,bevel2, bevel,bevel1,bevel2,
id1,id2, id1,id2,
anchor, spin, orient anchor, spin, orient
) { ) {
assert(in_list(shape,["square","hex"]), "shape must be \"hex\" or \"square\"");
extra = 0.01; extra = 0.01;
id1 = first_defined([id1,id]); id1 = first_defined([id1,id]);
id2 = first_defined([id2,id]); id2 = first_defined([id2,id]);
@ -1267,7 +1275,10 @@ module generic_threaded_nut(
depth = -pitch*min(column(profile,1)); depth = -pitch*min(column(profile,1));
attachable(anchor,spin,orient, size=[od/cos(30),od,h]) { attachable(anchor,spin,orient, size=[od/cos(30),od,h]) {
difference() { difference() {
if (shape=="hex")
cyl(d=od/cos(30), h=h, center=true, $fn=6,chamfer1=bevel1?depth:undef,chamfer2=bevel2?depth:undef); cyl(d=od/cos(30), h=h, center=true, $fn=6,chamfer1=bevel1?depth:undef,chamfer2=bevel2?depth:undef);
else
cuboid([od,od,h]);
generic_threaded_rod( generic_threaded_rod(
d1=full_id1,d2=full_id2, d1=full_id1,d2=full_id2,
l=h+extra, l=h+extra,