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Corrected helical gear twist calculation.

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Revar Desmera 2023-06-19 22:36:13 -07:00
parent 34bb2e74fd
commit cdbfe0217c
1 changed files with 2 additions and 2 deletions
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4
gears.scad
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@ -198,7 +198,7 @@ function spur_gear(
p = pitch_radius(pitch, teeth), p = pitch_radius(pitch, teeth),
c = outer_radius(pitch, teeth, clearance, interior), c = outer_radius(pitch, teeth, clearance, interior),
r = _root_radius(pitch, teeth, clearance, interior), r = _root_radius(pitch, teeth, clearance, interior),
twist = atan2(thickness*tan(helical),p), twist = 360*thickness*tan(helical)/(2*PI*p),
rgn = [ rgn = [
spur_gear2d( spur_gear2d(
pitch = pitch, pitch = pitch,
@ -237,7 +237,7 @@ module spur_gear(
p = pitch_radius(pitch, teeth); p = pitch_radius(pitch, teeth);
c = outer_radius(pitch, teeth, clearance, interior); c = outer_radius(pitch, teeth, clearance, interior);
r = _root_radius(pitch, teeth, clearance, interior); r = _root_radius(pitch, teeth, clearance, interior);
twist = atan2(thickness*tan(helical),p); twist = 360*thickness*tan(helical)/(2*PI*p);
attachable(anchor,spin,orient, r=p, l=thickness) { attachable(anchor,spin,orient, r=p, l=thickness) {
zrot(twist/2) zrot(twist/2)
linear_extrude( linear_extrude(