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mirror of https://github.com/nophead/NopSCADlib.git synced 2025-01-16 13:08:15 +01:00
NopSCADlib/vitamins/servo_motor.scad
Chris Palmer 2d091b9d16 Added a constructor function for PCBs.
PCB text can now specify a colour.
Added SOT23_6, TSOT23_8 and CAP1210 SMD packages.
Added ESP-201 Wifi Module PCB.
Added ESP12F Wifi module.
Added tiny_buck converter PCB.
Made 2p54joiner a bit longer.
Fixed SOIC gullwing shape.
Added Wifi antennas.
Added Yunpen filtered IEC mains inlet.
Added power jack socket.
Added right angle option for LEDs.
Added gear_motors.
Added 686ZZ and 696ZZ ball bearings.
Added two larger box section tubes.
Added right angle option to square_buttons. Doesn't draw the frame yet.
Added multiwatt11 package for L6203.
Added ONS9143A 13A mains socket.
Added radial electrolytic capacitors.
Added LDE10_20B PSU module.
Added screw_tearsink() to make horizontal countersunk holes.
Can now have solid tracks on veroboard.
Added veroboard_base() module to make an STL for a base with spacers.
Corrected M6 spring washer thickness.
Can now specify the height of a solder meniscus.
slot() now has a center option.
Added button_6mm_7 with a taller button.
Added default fa, fs and fn constants used for drawing vitamins.
These can be set via $default_fa and $default_fs that can also be set
by environment variables: NOPSCADLIB_DEFAULT_FA and NOPSCADLIB_DEFAULT_FS.
2023-10-29 21:56:08 +00:00

141 lines
5.1 KiB
OpenSCAD

//
// NopSCADlib Copyright Niclas Hedhman 2018
// niclas@hedhman.org
//
// This file is part of NopSCADlib.
//
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>.
//
//! BLDC servos for CNC machines
//
include <../utils/core/core.scad>
use <../utils/tube.scad>
use <../utils/round.scad>
use <../utils/quadrant.scad>
use <../utils/rounded_cylinder.scad>
function servo_motor_cap(type) = type[2]; //! Diameter height and corner radius of encoder cover
function servo_motor_length(type) = type[3]; //! Total length from the faceplate
function servo_motor_shaft(type) = type[4]; //! Shaft type
function servo_motor_faceplate(type) = type[5]; //! Face plate type
function faceplate_width(type) = type[1]; //! Width of faceplate
function faceplate_thickness(type) = type[2]; //! Thickness of the faceplate
function faceplate_boss_size(type) = type[3]; //! Centre boss outer d, inner d and height
function faceplate_hole_pitch(type) = type[4]; //! Screw hole pitch
function faceplate_hole_dia(type) = type[5]; //! Screw hole size
function servo_motor_width(type) = faceplate_width(servo_motor_faceplate(type)); //! Width of the motor body
function shaft_type(type) = type[0]; //! String to indicate the shaft type
function shaft_diameter(type) = type[1]; //! Shaft diameter
function shaft_length(type) = type[2]; //! Shaft length
function shaft_key_size(type) = type[3]; //! Keyway [length, width, depth]
module servo_motor(type) { //! Draw the specified servo
fplate = servo_motor_faceplate(type);
t = faceplate_thickness(fplate);
w = servo_motor_width(type);
inset = (w - faceplate_hole_pitch(fplate)) / 2;
cap = servo_motor_cap(type);
l = servo_motor_length(type);
vitamin(str("servo_motor(", type[0], ") : Servo ", type[1], " ", fplate[0], " mount ", servo_motor_width(type), " x ", servo_motor_length(type), "mm"));
color(grey(20))
translate_z(-l + cap.z) {
linear_extrude(l - t - cap.z)
round(2)
difference() {
square([w, w], center = true);
faceplate_screw_positions(fplate)
rotate($i * 90 + 180)
quadrant(w = 2 * inset, r = inset, center = true);
}
vflip()
rounded_cylinder(r = cap.x / 2, r2 = cap.y, h = cap.z);
}
motor_shaft(servo_motor_shaft(type));
motor_faceplate(fplate);
}
module motor_shaft(type) { //! Draw the specified motor shaft
diameter = shaft_diameter(type);
length = shaft_length(type);
key_size = shaft_key_size(type);
key_r = key_size.y / 2;
color("silver")
if( shaft_type(type) == "keyed" ) {
render() difference() {
cylinder(h = length, d = diameter);
translate([diameter / 2, 0, length])
rotate([0, 90, 0])
slot(r = key_r, l = 2 * (key_size.x - key_r), h = 2 * key_size.z);
}
}
}
module servo_screw_positions(type) //! Position children at screw positions
faceplate_screw_positions(servo_motor_faceplate(type))
children();
module faceplate_screw_positions(type) //! Position children at faceplate screw positions
for($i = [0 : 3])
let(corner = [[1, 1], [-1, 1], [-1,-1], [1, -1]][$i], pitch = faceplate_hole_pitch(type))
translate(corner * pitch / 2)
children();
module motor_faceplate(type) { //! Draw specified motor faceplate
w = faceplate_width(type);
t = faceplate_thickness(type);
boss = faceplate_boss_size(type);
boss_r = boss[0] / 2;
boss_ir = boss[1] / 2;
boss_t = boss.z;
rad = 5; // corner radius
translate_z(-t) {
color(silver)
linear_extrude(t)
difference() {
rounded_square([w - eps, w - eps], rad);
faceplate_screw_positions(type)
circle(d = faceplate_hole_dia(type));
}
color(grey(10))
translate_z(eps)
linear_extrude(t - 2 * eps)
difference() {
rounded_square([w, w], rad);
faceplate_screw_positions(type)
circle(d = faceplate_hole_dia(type) + eps);
}
}
color(grey(10))
tube(h = boss_t, or = boss_r - eps, ir = boss_ir + eps, center = false);
color(silver)
tube(h = boss_t - eps, or = boss_r, ir = boss_ir, center = false);
}