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bugfix

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This commit is contained in:
Adrian Mariano 2023-08-02 18:59:52 -04:00
parent 049ae61f69
commit 9e36a1582a
1 changed files with 7 additions and 8 deletions
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15
gears.scad
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@ -3256,13 +3256,13 @@ function _working_normal_pressure_angle_skew(teeth1,profile_shift1,helical1, tee
// --
// pressure_angle = The pressure angle of the gear.
// Example(3D,Med,NoAxes,VPT=[-2.62091,2.01048,-1.31405],VPR=[55,0,25],VPD=74.4017): These gears are auto profile shifted and as a result, do not mesh at the sum of their helical angles, but at 2.5 degrees more.
// circ_pitch=5; teeth1=12; teeth2=7; ha1=25; ha2=30; thick=10;
// d = gear_dist_skew(circ_pitch=circ_pitch, teeth1, teeth2, ha1, ha2);
// ang = gear_skew_angle(teeth1, teeth2, helical1=ha1, helical2=ha2); // Returns 57.7
// left(d/2)
// spur_gear(circ_pitch, teeth1, helical=ha1, thickness=thick, gear_spin=-90);
// right(d/2) color("lightblue")
// xrot(ang) spur_gear(circ_pitch, teeth2, helical=ha2, thickness=thick, gear_spin=90-180/teeth2);
circ_pitch=5; teeth1=12; teeth2=7; ha1=25; ha2=30; thick=10;
d = gear_dist_skew(circ_pitch=circ_pitch, teeth1, teeth2, ha1, ha2);
ang = gear_skew_angle(teeth1, teeth2, helical1=ha1, helical2=ha2); // Returns 57.7
left(d/2)
spur_gear(circ_pitch, teeth1, helical=ha1, thickness=thick, gear_spin=-90);
right(d/2) color("lightblue")
xrot(ang) spur_gear(circ_pitch, teeth2, helical=ha2, thickness=thick, gear_spin=90-180/teeth2);
function gear_skew_angle(teeth1,teeth2,helical1,helical2,profile_shift1,profile_shift2,pressure_angle=20) =
assert(all_nonnegative([teeth1,teeth2]),"Must give nonnegative values for teeth")
@ -3275,7 +3275,6 @@ function gear_skew_angle(teeth1,teeth2,helical1,helical2,profile_shift1,profile_
profile_shift1==0 && profile_shift2==0 ? helical1+helical2
: teeth1==0 || teeth2==0 ? helical1+helical2
: let(
mod = module_value(mod=mod, circ_pitch=circ_pitch, diam_pitch=diam_pitch),
a = gear_dist_skew(mod=mod,teeth1,teeth2,helical1,helical2,profile_shift1,profile_shift2,pressure_angle=pressure_angle),
b = gear_dist_skew(mod=mod,teeth1,teeth2,helical1,helical2,0,0,pressure_angle=pressure_angle),
d1 = 2*pitch_radius(mod=mod,teeth=teeth1,helical=helical1),