2012-03-12 01:13:07 +00:00
|
|
|
//
|
|
|
|
|
// Mendel90
|
|
|
|
|
//
|
|
|
|
|
// GNU GPL v2
|
|
|
|
|
// nop.head@gmail.com
|
|
|
|
|
// hydraraptor.blogspot.com
|
|
|
|
|
//
|
|
|
|
|
// NEMA stepper motor model
|
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
// corner body boss boss shaft
|
|
|
|
|
// side, length, radius, radius, radius, depth, shaft, length, holes
|
|
|
|
|
NEMA17 = [42.3, 47.5, 53.6/2, 25, 11, 2, 5, 24, 31 ];
|
|
|
|
|
NEMA17S = [42.3, 34, 53.6/2, 25, 11, 2, 5, 24, 31 ];
|
|
|
|
|
NEMA14 = [35.2, 36, 46.4/2, 21, 11, 2, 5, 21, 26 ];
|
|
|
|
|
|
|
|
|
|
function NEMA_width(motor) = motor[0];
|
|
|
|
|
function NEMA_length(motor) = motor[1];
|
|
|
|
|
function NEMA_radius(motor) = motor[2];
|
|
|
|
|
function NEMA_holes(motor) = [-motor[8]/2, motor[8]/2];
|
|
|
|
|
function NEMA_big_hole(motor) = motor[4] + 0.2;
|
|
|
|
|
function NEMA_shaft_length(motor) = motor[7];
|
|
|
|
|
|
|
|
|
|
module NEMA(motor) {
|
|
|
|
|
side = NEMA_width(motor);
|
|
|
|
|
length = NEMA_length(motor);
|
|
|
|
|
body_rad = motor[3];
|
|
|
|
|
boss_rad = motor[4];
|
|
|
|
|
boss_height = motor[5];
|
|
|
|
|
shaft_rad = motor[6] / 2;
|
|
|
|
|
cap = 8;
|
|
|
|
|
vitamin(str("NEMA", round(motor[0] / 2.54), length * 10, ": NEMA", round(motor[0] / 2.54), " x ", length, " stepper motor"));
|
|
|
|
|
union() {
|
2012-03-13 10:02:35 -05:00
|
|
|
color(stepper_body_color) render() // black laminations
|
2012-03-12 01:13:07 +00:00
|
|
|
translate([0,0, -length / 2])
|
|
|
|
|
intersection() {
|
|
|
|
|
cube([side, side, length - cap * 2],center = true);
|
|
|
|
|
cylinder(r = body_rad, h = 2 * length, center = true);
|
|
|
|
|
}
|
2012-03-13 10:02:35 -05:00
|
|
|
color(stepper_cap_color) render() { // aluminium end caps
|
2012-03-12 01:13:07 +00:00
|
|
|
difference() {
|
|
|
|
|
union() {
|
|
|
|
|
intersection() {
|
|
|
|
|
union() {
|
|
|
|
|
translate([0,0, -cap / 2])
|
|
|
|
|
cube([side,side,cap], center = true);
|
|
|
|
|
translate([0,0, -length + cap / 2])
|
|
|
|
|
cube([side,side,cap], center = true);
|
|
|
|
|
}
|
|
|
|
|
cylinder(r = NEMA_radius(motor), h = 3 * length, center = true);
|
|
|
|
|
}
|
|
|
|
|
difference() {
|
|
|
|
|
cylinder(r = boss_rad, h = boss_height * 2, center = true); // raised boss
|
|
|
|
|
cylinder(r = shaft_rad + 2, h = boss_height * 2 + 1, center = true);
|
|
|
|
|
}
|
|
|
|
|
cylinder(r = shaft_rad, h = NEMA_shaft_length(motor) * 2, center = true); // shaft
|
|
|
|
|
}
|
|
|
|
|
for(x = NEMA_holes(motor))
|
|
|
|
|
for(y = NEMA_holes(motor))
|
|
|
|
|
translate([x, y, 0])
|
|
|
|
|
cylinder(r = 3/2, h = 9, center = true);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
module NEMA_screws(motor, n = 4) {
|
|
|
|
|
for(a = [0: 90 : 90 * (n - 1)])
|
|
|
|
|
rotate([0, 0, a])
|
|
|
|
|
translate([motor[8]/2, motor[8]/2, 0])
|
|
|
|
|
screw_and_washer(M3_pan_screw, 8, true);
|
|
|
|
|
}
|
