cadSet/SimpleCADAPI/docs/stdlib/make_herringbone_gear_rsolid.md

make_herringbone_gear_rsolid

API Definition

def make_herringbone_gear_rsolid(n_teeth: int, module: float, pressure_angle: float = 20.0, helix_angle: float = 32.0, gear_height: float = 10.0, *, addendum_factor: float = 1.0, clearance_factor: float = 0.25, backlash: float = 0.0) -> Solid

Source: std/gear.py

Import Surface

• standard library: import simplecadapi as scad then scad.std.gear.make_herringbone_gear_rsolid(...); direct submodule import: from simplecadapi.std.gear import make_herringbone_gear_rsolid

Description

Create an involute herringbone (double-helical) gear.

Each half is modeled as a small-step ruled loft through rotated copies of one profile, with a shared center section forming the herringbone ridge. This keeps closed-wire section correspondence stable while avoiding smooth loft bulging in STEP exports.

Parameters

n_teeth

• Type: int
• Description: Number of teeth (>= 3).

module

• Type: float
• Description: Gear module in mm.

pressure_angle

• Type: float, default 20
• Description: Pressure angle in degrees.

helix_angle

• Type: float, default 32
• Description: Helix angle of each half in degrees.

gear_height

• Type: float, default 10.0
• Description: Total gear thickness along Z in mm.

addendum_factor

• Type: float, default 1.0
• Description: Tooth addendum as a multiple of module.

clearance_factor

• Type: float, default 0.25
• Description: Root clearance beyond the addendum, as a multiple of module.

backlash

• Type: float, default 0.0
• Description: Circumferential tooth-thickness reduction at the pitch circle in mm.