You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
314 lines
11 KiB
OpenSCAD
314 lines
11 KiB
OpenSCAD
/*
|
|
* A nema standard stepper motor module.
|
|
*
|
|
* Originally by Hans Häggström, 2010.
|
|
* Dual licenced under Creative Commons Attribution-Share Alike 3.0 and LGPL2 or later
|
|
*/
|
|
|
|
include <units.scad>
|
|
include <materials.scad>
|
|
|
|
|
|
// Demo, uncomment to show:
|
|
//nema_demo();
|
|
|
|
module nema_demo(){
|
|
for (size = [NemaShort, NemaMedium, NemaLong]) {
|
|
translate([-100,size*100,0]) motor(Nema34, size, dualAxis=true);
|
|
translate([0,size*100,0]) motor(Nema23, size, dualAxis=true);
|
|
translate([100,size*100,0]) motor(Nema17, size, dualAxis=true);
|
|
translate([200,size*100,0]) motor(Nema14, size, dualAxis=true);
|
|
translate([300,size*100,0]) motor(Nema11, size, dualAxis=true);
|
|
translate([400,size*100,0]) motor(Nema08, size, dualAxis=true);
|
|
}
|
|
}
|
|
|
|
|
|
// Parameters:
|
|
NemaModel = 0;
|
|
NemaLengthShort = 1;
|
|
NemaLengthMedium = 2;
|
|
NemaLengthLong = 3;
|
|
NemaSideSize = 4;
|
|
NemaDistanceBetweenMountingHoles = 5;
|
|
NemaMountingHoleDiameter = 6;
|
|
NemaMountingHoleDepth = 7;
|
|
NemaMountingHoleLip = 8;
|
|
NemaMountingHoleCutoutRadius = 9;
|
|
NemaEdgeRoundingRadius = 10;
|
|
NemaRoundExtrusionDiameter = 11;
|
|
NemaRoundExtrusionHeight = 12;
|
|
NemaAxleDiameter = 13;
|
|
NemaFrontAxleLength = 14;
|
|
NemaBackAxleLength = 15;
|
|
NemaAxleFlatDepth = 16;
|
|
NemaAxleFlatLengthFront = 17;
|
|
NemaAxleFlatLengthBack = 18;
|
|
|
|
NemaA = 1;
|
|
NemaB = 2;
|
|
NemaC = 3;
|
|
|
|
NemaShort = NemaA;
|
|
NemaMedium = NemaB;
|
|
NemaLong = NemaC;
|
|
|
|
// TODO: The small motors seem to be a bit too long, I picked the size specs from all over the place, is there some canonical reference?
|
|
Nema08 = [
|
|
[NemaModel, 8],
|
|
[NemaLengthShort, 33*mm],
|
|
[NemaLengthMedium, 43*mm],
|
|
[NemaLengthLong, 43*mm],
|
|
[NemaSideSize, 20*mm],
|
|
[NemaDistanceBetweenMountingHoles, 15.4*mm],
|
|
[NemaMountingHoleDiameter, 2*mm],
|
|
[NemaMountingHoleDepth, 1.75*mm],
|
|
[NemaMountingHoleLip, -1*mm],
|
|
[NemaMountingHoleCutoutRadius, 0*mm],
|
|
[NemaEdgeRoundingRadius, 2*mm],
|
|
[NemaRoundExtrusionDiameter, 16*mm],
|
|
[NemaRoundExtrusionHeight, 1.5*mm],
|
|
[NemaAxleDiameter, 4*mm],
|
|
[NemaFrontAxleLength, 13.5*mm],
|
|
[NemaBackAxleLength, 9.9*mm],
|
|
[NemaAxleFlatDepth, -1*mm],
|
|
[NemaAxleFlatLengthFront, 0*mm],
|
|
[NemaAxleFlatLengthBack, 0*mm]
|
|
];
|
|
|
|
Nema11 = [
|
|
[NemaModel, 11],
|
|
[NemaLengthShort, 32*mm],
|
|
[NemaLengthMedium, 40*mm],
|
|
[NemaLengthLong, 52*mm],
|
|
[NemaSideSize, 28*mm],
|
|
[NemaDistanceBetweenMountingHoles, 23*mm],
|
|
[NemaMountingHoleDiameter, 2.5*mm],
|
|
[NemaMountingHoleDepth, 2*mm],
|
|
[NemaMountingHoleLip, -1*mm],
|
|
[NemaMountingHoleCutoutRadius, 0*mm],
|
|
[NemaEdgeRoundingRadius, 2.5*mm],
|
|
[NemaRoundExtrusionDiameter, 22*mm],
|
|
[NemaRoundExtrusionHeight, 1.8*mm],
|
|
[NemaAxleDiameter, 5*mm],
|
|
[NemaFrontAxleLength, 13.7*mm],
|
|
[NemaBackAxleLength, 10*mm],
|
|
[NemaAxleFlatDepth, 0.5*mm],
|
|
[NemaAxleFlatLengthFront, 10*mm],
|
|
[NemaAxleFlatLengthBack, 9*mm]
|
|
];
|
|
|
|
Nema14 = [
|
|
[NemaModel, 14],
|
|
[NemaLengthShort, 26*mm],
|
|
[NemaLengthMedium, 28*mm],
|
|
[NemaLengthLong, 34*mm],
|
|
[NemaSideSize, 35.3*mm],
|
|
[NemaDistanceBetweenMountingHoles, 26*mm],
|
|
[NemaMountingHoleDiameter, 3*mm],
|
|
[NemaMountingHoleDepth, 3.5*mm],
|
|
[NemaMountingHoleLip, -1*mm],
|
|
[NemaMountingHoleCutoutRadius, 0*mm],
|
|
[NemaEdgeRoundingRadius, 5*mm],
|
|
[NemaRoundExtrusionDiameter, 22*mm],
|
|
[NemaRoundExtrusionHeight, 1.9*mm],
|
|
[NemaAxleDiameter, 5*mm],
|
|
[NemaFrontAxleLength, 18*mm],
|
|
[NemaBackAxleLength, 10*mm],
|
|
[NemaAxleFlatDepth, 0.5*mm],
|
|
[NemaAxleFlatLengthFront, 15*mm],
|
|
[NemaAxleFlatLengthBack, 9*mm]
|
|
];
|
|
|
|
Nema17 = [
|
|
[NemaModel, 17],
|
|
[NemaLengthShort, 33*mm],
|
|
[NemaLengthMedium, 39*mm],
|
|
[NemaLengthLong, 47*mm],
|
|
[NemaSideSize, 42.20*mm],
|
|
[NemaDistanceBetweenMountingHoles, 31.04*mm],
|
|
[NemaMountingHoleDiameter, 4*mm],
|
|
[NemaMountingHoleDepth, 4.5*mm],
|
|
[NemaMountingHoleLip, -1*mm],
|
|
[NemaMountingHoleCutoutRadius, 0*mm],
|
|
[NemaEdgeRoundingRadius, 7*mm],
|
|
[NemaRoundExtrusionDiameter, 22*mm],
|
|
[NemaRoundExtrusionHeight, 1.9*mm],
|
|
[NemaAxleDiameter, 5*mm],
|
|
[NemaFrontAxleLength, 18*mm],
|
|
[NemaBackAxleLength, 15*mm],
|
|
[NemaAxleFlatDepth, 0.5*mm],
|
|
[NemaAxleFlatLengthFront, 15*mm],
|
|
[NemaAxleFlatLengthBack, 14*mm]
|
|
];
|
|
|
|
Nema23 = [
|
|
[NemaModel, 23],
|
|
[NemaLengthShort, 39*mm],
|
|
[NemaLengthMedium, 54*mm],
|
|
[NemaLengthLong, 76*mm],
|
|
[NemaSideSize, 56.4*mm],
|
|
[NemaDistanceBetweenMountingHoles, 47.14*mm],
|
|
[NemaMountingHoleDiameter, 4.75*mm],
|
|
[NemaMountingHoleDepth, 5*mm],
|
|
[NemaMountingHoleLip, 4.95*mm],
|
|
[NemaMountingHoleCutoutRadius, 9.5*mm],
|
|
[NemaEdgeRoundingRadius, 2.5*mm],
|
|
[NemaRoundExtrusionDiameter, 38.10*mm],
|
|
[NemaRoundExtrusionHeight, 1.52*mm],
|
|
[NemaAxleDiameter, 6.36*mm],
|
|
[NemaFrontAxleLength, 18.80*mm],
|
|
[NemaBackAxleLength, 15.60*mm],
|
|
[NemaAxleFlatDepth, 0.5*mm],
|
|
[NemaAxleFlatLengthFront, 16*mm],
|
|
[NemaAxleFlatLengthBack, 14*mm]
|
|
];
|
|
|
|
Nema34 = [
|
|
[NemaModel, 34],
|
|
[NemaLengthShort, 66*mm],
|
|
[NemaLengthMedium, 96*mm],
|
|
[NemaLengthLong, 126*mm],
|
|
[NemaSideSize, 85*mm],
|
|
[NemaDistanceBetweenMountingHoles, 69.58*mm],
|
|
[NemaMountingHoleDiameter, 6.5*mm],
|
|
[NemaMountingHoleDepth, 5.5*mm],
|
|
[NemaMountingHoleLip, 5*mm],
|
|
[NemaMountingHoleCutoutRadius, 17*mm],
|
|
[NemaEdgeRoundingRadius, 3*mm],
|
|
[NemaRoundExtrusionDiameter, 73.03*mm],
|
|
[NemaRoundExtrusionHeight, 1.9*mm],
|
|
[NemaAxleDiameter, 0.5*inch],
|
|
[NemaFrontAxleLength, 37*mm],
|
|
[NemaBackAxleLength, 34*mm],
|
|
[NemaAxleFlatDepth, 1.20*mm],
|
|
[NemaAxleFlatLengthFront, 25*mm],
|
|
[NemaAxleFlatLengthBack, 25*mm]
|
|
];
|
|
|
|
|
|
|
|
function motorWidth(model=Nema23) = lookup(NemaSideSize, model);
|
|
function motorLength(model=Nema23, size=NemaMedium) = lookup(size, model);
|
|
|
|
|
|
module motor(model=Nema23, size=NemaMedium, dualAxis=false, pos=[0,0,0], orientation = [0,0,0]) {
|
|
|
|
length = lookup(size, model);
|
|
|
|
echo(str(" Motor: Nema",lookup(NemaModel, model),", length= ",length,"mm, dual axis=",dualAxis));
|
|
|
|
stepperBlack = BlackPaint;
|
|
stepperAluminum = Aluminum;
|
|
|
|
side = lookup(NemaSideSize, model);
|
|
|
|
cutR = lookup(NemaMountingHoleCutoutRadius, model);
|
|
lip = lookup(NemaMountingHoleLip, model);
|
|
holeDepth = lookup(NemaMountingHoleDepth, model);
|
|
|
|
axleLengthFront = lookup(NemaFrontAxleLength, model);
|
|
axleLengthBack = lookup(NemaBackAxleLength, model);
|
|
axleRadius = lookup(NemaAxleDiameter, model) * 0.5;
|
|
|
|
extrSize = lookup(NemaRoundExtrusionHeight, model);
|
|
extrRad = lookup(NemaRoundExtrusionDiameter, model) * 0.5;
|
|
|
|
holeDist = lookup(NemaDistanceBetweenMountingHoles, model) * 0.5;
|
|
holeRadius = lookup(NemaMountingHoleDiameter, model) * 0.5;
|
|
|
|
mid = side / 2;
|
|
|
|
roundR = lookup(NemaEdgeRoundingRadius, model);
|
|
|
|
axleFlatDepth = lookup(NemaAxleFlatDepth, model);
|
|
axleFlatLengthFront = lookup(NemaAxleFlatLengthFront, model);
|
|
axleFlatLengthBack = lookup(NemaAxleFlatLengthBack, model);
|
|
|
|
color(stepperBlack){
|
|
translate(pos) rotate(orientation) {
|
|
translate([-mid, -mid, 0])
|
|
difference() {
|
|
cube(size=[side, side, length + extrSize]);
|
|
|
|
// Corner cutouts
|
|
if (lip > 0) {
|
|
translate([0, 0, lip]) cylinder(h=length, r=cutR);
|
|
translate([side, 0, lip]) cylinder(h=length, r=cutR);
|
|
translate([0, side, lip]) cylinder(h=length, r=cutR);
|
|
translate([side, side, lip]) cylinder(h=length, r=cutR);
|
|
|
|
}
|
|
|
|
// Rounded edges
|
|
if (roundR > 0) {
|
|
translate([mid+mid, mid+mid, length/2])
|
|
rotate([0,0,45])
|
|
cube(size=[roundR, roundR*2, 4+length + extrSize+2], center=true);
|
|
translate([mid-(mid), mid+(mid), length/2])
|
|
rotate([0,0,45])
|
|
cube(size=[roundR*2, roundR, 4+length + extrSize+2], center=true);
|
|
translate([mid+mid, mid-mid, length/2])
|
|
rotate([0,0,45])
|
|
cube(size=[roundR*2, roundR, 4+length + extrSize+2], center=true);
|
|
translate([mid-mid, mid-mid, length/2])
|
|
rotate([0,0,45])
|
|
cube(size=[roundR, roundR*2, 4+length + extrSize+2], center=true);
|
|
|
|
}
|
|
|
|
// Bolt holes
|
|
color(stepperAluminum, $fs=holeRadius/8) {
|
|
translate([mid+holeDist,mid+holeDist,-1*mm]) cylinder(h=holeDepth+1*mm, r=holeRadius);
|
|
translate([mid-holeDist,mid+holeDist,-1*mm]) cylinder(h=holeDepth+1*mm, r=holeRadius);
|
|
translate([mid+holeDist,mid-holeDist,-1*mm]) cylinder(h=holeDepth+1*mm, r=holeRadius);
|
|
translate([mid-holeDist,mid-holeDist,-1*mm]) cylinder(h=holeDepth+1*mm, r=holeRadius);
|
|
|
|
}
|
|
|
|
// Grinded flat
|
|
color(stepperAluminum) {
|
|
difference() {
|
|
translate([-1*mm, -1*mm, -extrSize])
|
|
cube(size=[side+2*mm, side+2*mm, extrSize + 1*mm]);
|
|
translate([side/2, side/2, -extrSize - 1*mm])
|
|
cylinder(h=4*mm, r=extrRad);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// Axle
|
|
translate([0, 0, extrSize-axleLengthFront]) color(stepperAluminum)
|
|
difference() {
|
|
|
|
cylinder(h=axleLengthFront + 1*mm , r=axleRadius, $fs=axleRadius/10);
|
|
|
|
// Flat
|
|
if (axleFlatDepth > 0)
|
|
translate([axleRadius - axleFlatDepth,-5*mm,-extrSize*mm -(axleLengthFront-axleFlatLengthFront)] ) cube(size=[5*mm, 10*mm, axleLengthFront]);
|
|
}
|
|
|
|
if (dualAxis) {
|
|
translate([0, 0, length+extrSize]) color(stepperAluminum)
|
|
difference() {
|
|
|
|
cylinder(h=axleLengthBack + 0*mm, r=axleRadius, $fs=axleRadius/10);
|
|
|
|
// Flat
|
|
if (axleFlatDepth > 0)
|
|
translate([axleRadius - axleFlatDepth,-5*mm,(axleLengthBack-axleFlatLengthBack)]) cube(size=[5*mm, 10*mm, axleLengthBack]);
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
module roundedBox(size, edgeRadius) {
|
|
cube(size);
|
|
|
|
}
|
|
|