get_profile_shift() – Returns total profile shift needed to achieve a desired spacing between two gears.gear_skew_angle() – Returns corrected skew angle between two profile shifted helical gears.gear_dist_skew() – Returns the distance between two helical gear centers with skew axes.gear_dist() – Returns the distance between two gear centers for spur gears or parallel axis helical gears.worm_dist() – Returns the distance between a worm and a worm gear.worm_gear_thickness() – Returns the thickness for a worm gear.bevel_pitch_angle() – Returns the pitch cone angle for a bevel gear.outer_radius() – Returns the outer radius for a gear.pitch_radius() – Returns the pitch radius for a gear.module_value() – Returns tooth density expressed as 'module'.diametral_pitch() – Returns tooth density expressed as 'diametral pitch'.circular_pitch() – Returns tooth density expressed as 'circular pitch'.planetary_gears() – Calculate teeth counts and angles for planetary gear assembly with specified ratio.worm_gear() – Creates a worm gear that will mate with a worm.enveloping_worm() – Creates a double-enveloping worm that will mate with a worm gear.worm() – Creates a worm that will mate with a worm gear.bevel_gear() – Creates a straight, zerol, or spiral bevel gear.crown_gear() – Creates a crown gear that can mesh with a spur gear.rack() – Creates a straight or helical gear rack.ring_gear2d() – Creates a 2D ring gear.spur_gear2d() – Creates a 2D spur gear or internal ring gear.spur_gear() – Creates a spur gear, helical gear, or internal ring gear.Section: Backlash (Fitting Real Gears Together) Subsection: Ring Gears (Internal Gears).Subsection: Corrected Gears and Profile Shifting.

Openscad gear library