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Revar Desmera edited this page Feb 10, 2019 · 13 revisions

Generic Threaded Screw Rods and Nuts.

Table of Contents

Generic Trapezoidal Threaded Rods And Nuts

trapezoidal_threaded_rod()

Constructs a generic trapezoidal-profile threaded screw rod. This method makes much smoother threads than the naive linear_extrude() method.

  • For metric trapezoidal threads, use thread_angle=15 and thread_depth=pitch/2.
  • For ACME trapezoidal threads, use thread_angle=14.5 and thread_depth=pitch/2.
  • For square threads, use thread_angle=0 and thread_depth=pitch/2.
  • For normal screw threads, use thread_angle=30 and thread_depth=pitch*3*sqrt(3)/8.
Arg What it does
d Outer diameter of threaded rod.
l Length of threaded rod.
pitch Thread pitch.
thread_depth Depth of threads. Default: pitch/2
thread_angle Trapezoidal angle of threads. Default: 15 degrees.
starts The number of lead starts. Default: 1
left_handed If true, create left-handed threads. Default: false
bevel If true, bevel the thread ends. Default: false
center If true (default), centers rod at origin. If false, sits it on top of the XY plane.

Example:

trapezoidal_threaded_rod(l=25, d=10, pitch=2, thread_angle=15, starts=3, $fa=1, $fs=1);

trapezoidal_threaded_rod

trapezoidal_threaded_nut()

Constructs a generic trapezoidal-profile threaded nut.

  • For metric trapezoidal threads, use thread_angle=15 and thread_depth=pitch/2.
  • For ACME trapezoidal threads, use thread_angle=14.5 and thread_depth=pitch/2.
  • For square threads, use thread_angle=0 and thread_depth=pitch/2.
  • For normal screw threads, use thread_angle=30 and thread_depth=pitch*3*sqrt(3)/8.
Arg What it does
od Outer diameter of threaded nut.
id Diameter of threaded rod to make a nut for.
h Height/Thickness of the nut.
pitch Thread pitch.
thread_depth Depth of threads. Default = pitch/2
thread_angle Trapezoidal angle of threads. Default = 15 degrees.
left_handed If true, create left-handed threads. Default = false
starts The number of lead starts. Default = 1
bevel If true, bevel the threaded holes. Default: true
slop Slop to make the printed parts fit tightly. Default = 0.2

Examples:

trapezoidal_threaded_nut(od=17.4, id=10, h=10, pitch=2, thread_angle=15, starts=3, $fa=1, $fs=1);

trapezoidal_threaded_nut

Metric and UTS (American) Triangular Threaded Rods And Nuts

threaded_rod()

Constructs an standard triangular threaded metric or UTS screw rod. This method makes much smoother threads than the naive linear_extrude method.

Arg What it does
d Outer diameter of threaded rod.
l Length of threaded rod.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the thread ends. Default: false

Example:

threaded_rod(d=10, l=30, pitch=1.25, left_handed=true);

threaded_rod

threaded_nut()

Constructs a standard metric or UTS (American) triangular threaded nut.

Arg What it does
od Outer diameter of threaded nut.
id Diameter of threaded rod to make a nut for.
h Height/Thickness of the nut.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the threaded holes. Default: false
slop Slop to make the printed parts fit tightly. Default = 0.2

Examples:

threaded_nut(od=16, id=8, l=8, pitch=1.25, left_handed=true, slop=0.2, $fa=1, $fs=1);

threaded_nut

ACME Threaded Rods And Nuts

acme_threaded_rod()

Constructs an acme threaded screw rod. This method makes much smoother threads than the naive linear_extrude method.

Arg What it does
d Outer diameter of threaded rod.
l Length of threaded rod.
pitch Thread pitch.
thread_depth Depth of threads. Default = pitch/2
thread_angle Trapezoidal angle of threads. Default = 14.5 degrees.
starts The number of lead starts. Default = 1
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the thread ends. Default: false

Example:

acme_threaded_rod(d=10, l=40, pitch=2, starts=3, $fa=1, $fs=1);

acme_threaded_rod

acme_threaded_nut()

Constructs an acme threaded nut.

Arg What it does
od Outer diameter of threaded nut.
id Diameter of threaded rod to make a nut for.
h Height/Thickness of the nut.
pitch Thread pitch.
thread_depth Depth of threads. Default = pitch/2
thread_angle Trapezoidal angle of threads. Default = 14.5 degrees.
starts The number of lead starts. Default = 1
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the threaded holes. Default: false
slop Slop to make the printed parts fit tightly. Default = 0.2

Examples:

acme_threaded_nut(od=16, id=10, h=10, pitch=2, starts=3, slop=0.2, $fa=1, $fs=1);

acme_threaded_nut

Standard Metric Trapezoidal Threaded Rods And Nuts

metric_trapezoidal_threaded_rod()

Constructs an standard metric trapezoidal threaded screw rod. This method makes much smoother threads than the naive linear_extrude method.

Arg What it does
d Outer diameter of threaded rod.
l Length of threaded rod.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the thread ends. Default: false
starts The number of lead starts. Default = 1

Example:

metric_trapezoidal_threaded_rod(d=10, l=30, pitch=2, left_handed=true, $fa=1, $fs=1);

metric_trapezoidal_threaded_rod

metric_trapezoidal_threaded_nut()

Constructs a standard metric trapezoidal threaded nut.

Arg What it does
od Outer diameter of threaded nut.
id Diameter of threaded rod to make a nut for.
h Height/Thickness of the nut.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the threaded holes. Default: false
starts The number of lead starts. Default = 1
slop Slop to make the printed parts fit tightly. Default = 0.2

Examples:

metric_trapezoidal_threaded_nut(od=16, d=10, h=10, pitch=2, left_handed=true, bevel=true, $fa=1, $fs=1);

metric_trapezoidal_threaded_nut

Standard Square-Profile Threaded Rods And Nuts

square_threaded_rod()

Constructs a standard square-profile threaded screw rod. This method makes much smoother threads than the naive linear_extrude method.

Arg What it does
d Outer diameter of threaded rod.
l Length of threaded rod.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the thread ends. Default: false
starts The number of lead starts. Default = 1

Example:

square_threaded_rod(d=10, l=30, pitch=2, starts=2, $fn=32);

square_threaded_rod

square_threaded_nut()

Constructs a standard square-profile threaded nut.

Arg What it does
od Outer diameter of threaded nut.
id Diameter of threaded rod to make a nut for.
h Height/Thickness of the nut.
pitch Thread pitch.
left_handed If true, create left-handed threads. Default = false
bevel If true, bevel the threaded holes. Default: false
starts The number of lead starts. Default = 1
slop Slop to make the printed parts fit tightly. Default = 0.2

Examples:

square_threaded_nut(od=16, id=10, h=10, pitch=2, starts=2, slop=0.15, $fn=32);

square_threaded_nut

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