95 lines
2.4 KiB
OpenSCAD
95 lines
2.4 KiB
OpenSCAD
// License: GPL 2.0
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include <math.scad>
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//generates a motor mount for the specified nema standard #.
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module stepper_motor_mount(nema_standard,slide_distance=0, mochup=true)
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{
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//dimensions from:
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// http://www.numberfactory.com/NEMA%20Motor%20Dimensions.htm
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if (nema_standard == 17)
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{
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_stepper_motor_mount(
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motor_shaft_diameter = 0.1968*mm_per_inche,
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motor_shaft_length = 0.945*mm_per_inche,
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pilot_diameter = 0.866*mm_per_inche,
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pilot_length = 0.80*mm_per_inche,
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mounting_bolt_circle = 1.725*mm_per_inche,
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bolt_hole_size = 3.5,
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bolt_hole_distance = 1.220*mm_per_inche,
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slide_distance = slide_distance,
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mochup = mochup);
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}
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if (nema_standard == 23)
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{
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_stepper_motor_mount(
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motor_shaft_diameter = 0.250*mm_per_inche,
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motor_shaft_length = 0.81*mm_per_inche,
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pilot_diameter = 1.500*mm_per_inche,
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pilot_length = 0.062*mm_per_inche,
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mounting_bolt_circle = 2.625*mm_per_inche,
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bolt_hole_size = 0.195*mm_per_inche,
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bolt_hole_distance = 1.856*mm_per_inche,
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slide_distance = slide_distance,
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mochup = mochup);
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}
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}
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//inner mehod for creating a stepper motor mount of any dimensions
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module _stepper_motor_mount(
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motor_shaft_diameter,
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motor_shaft_length,
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pilot_diameter,
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pilot_length,
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mounting_bolt_circle,
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bolt_hole_size,
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bolt_hole_distance,
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slide_distance = 0,
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motor_length = 40, //arbitray - not standardized
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mochup
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)
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{
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union()
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{
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// == centered mount points ==
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//mounting circle inset
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translate([0,slide_distance/2,0]) circle(r = pilot_diameter/2);
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square([pilot_diameter,slide_distance],center=true);
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translate([0,-slide_distance/2,0]) circle(r = pilot_diameter/2);
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//todo: motor shaft hole
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//mounting screw holes
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for (x = [-1,1])
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{
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for (y = [-1,1])
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{
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translate([x*bolt_hole_distance/2,y*bolt_hole_distance/2,0])
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{
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translate([0,slide_distance/2,0]) circle(bolt_hole_size/2);
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translate([0,-slide_distance/2,0]) circle(bolt_hole_size/2);
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square([bolt_hole_size,slide_distance],center=true);
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}
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}
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}
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// == motor mock-up ==
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//motor box
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if (mochup == true)
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{
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%translate([0,0,-5]) cylinder(h = 5, r = pilot_diameter/2);
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%translate(v=[0,0,-motor_length/2])
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{
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cube(size=[bolt_hole_distance+bolt_hole_size+5,bolt_hole_distance+bolt_hole_size+5,motor_length], center = true);
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}
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//shaft
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%translate(v=[0,0,-(motor_length-motor_shaft_length-2)/2])
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{
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%cylinder(r=motor_shaft_diameter/2,h=motor_length+motor_shaft_length--1, center = true);
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}
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}
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};
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}
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