Gears not producing involute gears
trayracing opened this issue · comments
MCAD/gear.scad is not producing involute gears as claimed - the teeth look very boxy.
For comparison: gears.scad quotes a cartertools web page on gear construction. That page works through an example that corresponds to
gear(number_of_teeth=20, diametral_pitch=16, pressure_angle=14.5, clearance=0.009860625);
That cartertools gets this:
which looks a credible tooth profile, when compared to wikipedia
I tried this in 2015.3 and 2016.09.18 (git a5e4def) on windows 10, using both F5 and F6 and both appear to have the problem. I have not dug around to figure out if it's gears.scad or openscad at fault.
Want to back this issue? Post a bounty on it! We accept bounties via Bountysource.
use MCAD/involute_gears.scad
This should be moved to an MCAD issue (https://github.com/openscad/MCAD/issues)
Hmm, gears.scad
hardly looks useful in light of involute_gears.scad
, especially when the documentation states that it should generate involute gears. Might be good to simply drop this module altogether.