nema_steppers.scad

LibFile: nema_steppers.scad

Mounting holes for NEMA motors, and simple motor models.

To use, add the following lines to the beginning of your file:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>

File Contents

1. Section: Motor Models

   • nema_stepper_motor() – Creates a NEMA standard stepper motor model. ^[Geom]

2. Section: Masking Modules

   • nema_mount_mask() – Creates a standard NEMA mount holes mask. ^[Geom]

3. Section: Functions

   • nema_motor_info() – Returns dimension info for a given NEMA motor size.

Section: Motor Models

Module: nema_stepper_motor()

Synopsis: Creates a NEMA standard stepper motor model. ^[Geom]

Topics: Parts, Motors

See Also: nema_mount_mask()

Usage:

• nema_stepper_motor(size, h, shaft_len, [$slop=], ...) [ATTACHMENTS];

Description:

Creates a model of a NEMA standard stepper motor.

Arguments:

By Position	What it does
size	The NEMA standard size of the stepper motor.
h	Length of motor body. Default: 24mm
shaft_len	Length of shaft protruding out the top of the stepper motor. Default: 20mm

By Name	What it does
details	If false, creates a very rough motor shape, suitable for using as a mask. Default: true
atype	The attachment set type to use when anchoring. Default: "body"
$slop	If details is false then increase size of the model by double this amount (for use as a mask)
anchor	Translate so anchor point is at origin (0,0,0). See anchor. Default: TOP
spin	Rotate this many degrees around the Z axis after anchor. See spin. Default: 0
orient	Vector to rotate top towards, after spin. See orient. Default: UP

Anchor Types:

Anchor Type	What it is
"shaft"	Anchor relative to the shaft.
"plinth"	Anchor relative to the plinth.
"body"	Anchor relative to the motor body.
"screws"	Anchor relative to the screw hole centers. ie: TOP+RIGHT+FRONT is the center-top of the front-right screwhole.

Example 1:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_stepper_motor(size=8, h=24, shaft_len=15);

Example 2:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_stepper_motor(size=11, h=24, shaft_len=20);

Example 3:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_stepper_motor(size=17, h=40, shaft_len=30);

Example 4:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_stepper_motor(size=23, h=50, shaft_len=40);

Example 5:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_stepper_motor(size=23, h=50, shaft_len=40, details=false);

---

Section: Masking Modules

Module: nema_mount_mask()

Synopsis: Creates a standard NEMA mount holes mask. ^[Geom]

Topics: Parts, Motors

See Also: nema_stepper_motor()

Usage:

• nema_mount_mask(size, depth, l, [$slop], ...);

Description:

Creates a mask to use when making standard NEMA stepper motor mounts.

Arguments:

By Position	What it does
size	The standard NEMA motor size to make a mount for.
depth	The thickness of the mounting hole mask. Default: 5
l	The length of the slots, for making an adjustable motor mount. Default: 5

By Name	What it does
anchor	Translate so anchor point is at origin (0,0,0). See anchor. Default: CENTER
spin	Rotate this many degrees around the Z axis after anchor. See spin. Default: 0
orient	Vector to rotate top towards, after spin. See orient. Default: UP
$slop	The printer-specific slop value to make parts fit just right.

Anchor Types:

Anchor Type	What it is
"full"	Anchor relative the full mask.
"screws"	Anchor relative to the screw hole centers. ie: TOP+RIGHT+FRONT is the center-top of the front-right screwhole.

Example 1:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_mount_mask(size=14, depth=5, l=5);

Example 2:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_mount_mask(size=17, depth=5, l=5);

Example 3:

include <BOSL2/std.scad>
include <BOSL2/nema_steppers.scad>
nema_mount_mask(size=17, depth=5, l=0);

---

Section: Functions

Function: nema_motor_info()

Synopsis: Returns dimension info for a given NEMA motor size.

Topics: Parts, Motors

See Also: nema_stepper_motor(), nema_mount_mask()

Usage:

• info = nema_motor_info(size);

Description:

Gets various dimension info for a NEMA stepper motor of a specific size. Returns a list of scalar values, containing, in order:

• MOTOR_WIDTH: The full width and length of the motor.
• PLINTH_HEIGHT: The height of the circular plinth on the face of the motor.
• PLINTH_DIAM: The diameter of the circular plinth on the face of the motor.
• SCREW_SPACING: The spacing between screwhole centers in both X and Y axes.
• SCREW_SIZE: The diameter of the screws.
• SCREW_DEPTH: The depth of the screwholes.
• SHAFT_DIAM: The diameter of the motor shaft.

Arguments:

By Position	What it does
size	The standard NEMA motor size.

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