Skip to content
Browse files

Added a tolerance parameter tor motors.scad, by D1plo1d

  • Loading branch information...
1 parent 5c9ef60 commit 0cec0328ec4311d046ad3d8953c74b15c07cd2b9 @elmom committed Feb 3, 2011
Showing with 12 additions and 10 deletions.
  1. +12 −10 motors.scad
View
22 motors.scad
@@ -6,8 +6,7 @@ include <math.scad>
//generates a motor mount for the specified nema standard #.
-module stepper_motor_mount(nema_standard,slide_distance=0, mochup=true)
-{
+module stepper_motor_mount(nema_standard,slide_distance=0, mochup=true, tolerance=0) {
//dimensions from:
// http://www.numberfactory.com/NEMA%20Motor%20Dimensions.htm
if (nema_standard == 17)
@@ -21,7 +20,8 @@ module stepper_motor_mount(nema_standard,slide_distance=0, mochup=true)
bolt_hole_size = 3.5,
bolt_hole_distance = 1.220*mm_per_inch,
slide_distance = slide_distance,
- mochup = mochup);
+ mochup = mochup,
+ tolerance=tolerance);
}
if (nema_standard == 23)
{
@@ -34,7 +34,8 @@ module stepper_motor_mount(nema_standard,slide_distance=0, mochup=true)
bolt_hole_size = 0.195*mm_per_inch,
bolt_hole_distance = 1.856*mm_per_inch,
slide_distance = slide_distance,
- mochup = mochup);
+ mochup = mochup,
+ tolerance=tolerance);
}
}
@@ -51,16 +52,17 @@ module _stepper_motor_mount(
bolt_hole_distance,
slide_distance = 0,
motor_length = 40, //arbitray - not standardized
- mochup
+ mochup,
+ tolerance = 0
)
{
union()
{
// == centered mount points ==
//mounting circle inset
- translate([0,slide_distance/2,0]) circle(r = pilot_diameter/2);
+ translate([0,slide_distance/2,0]) circle(r = pilot_diameter/2 + tolerance);
square([pilot_diameter,slide_distance],center=true);
- translate([0,-slide_distance/2,0]) circle(r = pilot_diameter/2);
+ translate([0,-slide_distance/2,0]) circle(r = pilot_diameter/2 + tolerance);
//todo: motor shaft hole
@@ -71,9 +73,9 @@ module _stepper_motor_mount(
{
translate([x*bolt_hole_distance/2,y*bolt_hole_distance/2,0])
{
- translate([0,slide_distance/2,0]) circle(bolt_hole_size/2);
- translate([0,-slide_distance/2,0]) circle(bolt_hole_size/2);
- square([bolt_hole_size,slide_distance],center=true);
+ translate([0,slide_distance/2,0]) circle(bolt_hole_size/2 + tolerance);
+ translate([0,-slide_distance/2,0]) circle(bolt_hole_size/2 + tolerance);
+ square([bolt_hole_size+2*tolerance,slide_distance],center=true);
}
}
}

0 comments on commit 0cec032

Please sign in to comment.
Something went wrong with that request. Please try again.